Champaign bottles with aluminum bottle wraps
metal adhesives being applied on car underbody

All you need to know about metal adhesive systems

Where fasteners and welded bonds used to be of paramount importance, metal adhesive systems are becoming more and more popular. Metal glue and tapes bring along many benefits and cancel the disadvantages of mechanical bonds and seals. However, as there are different types of metals, also many types of metal bonding adhesive are available including machinery and structural adhesives.

Bonding metal with glues and tapes is highly possible, even recommended. However, the choice of the right metal adhesive may be a challenge due to the wide variety of different kinds of products which each have unique properties. Here you find the benefits of metal adhesives, the different types of metal glue and the suitable solutions for various types of metals, metal on metal glue options and how to glue metal to metal and to other materials.

Why you should choose for metal glue

Metal adhesives create chemical bonds which, in many cases, are preferred to mechanical fasteners, soldering and welds, especially when bonding metal to metal. Not only is metal glue often the more cost efficient option, but it also reduces the steps in assembly lines and so speeds up the process as a whole. The main reason for reducing the assembly steps is that adhesives not only bond but also seal. Thus the metal adhesive and sealant allow for application in one go. The bond (or seal) can also be flexible allowing for relative movement of the parts without affecting the bond. That is why metal adhesives are a go-to solution for products that are subject to vibration, temperature fluctuation and weather, such as trucks and other vehicles.

Metal adhesive vs. fasteners

Fasteners such as bolts and screws are very common methods of bonding for temporary joints. Fasteners are also suitable for semi temporary joints such as those in automotive assemblies. Nevertheless, problems may occur as fasteners require carefully placed holes, are prone to corrosion and may loosen over time.

This is where metal adhesives come into picture: removable glues and tapes are suitable for temporary bonding, and they do not leave traces behind after removal. Adhesives are also suitable for semi temporary joints as they seal from corrosion, are generally lighter and cheaper than mechanical fasteners, and distribute the stress throughout the bond making the assembly stronger. Some metal bonding adhesives come with special properties such as chemical resistance and heat resistance. Heat resistant glue for metal is common in public transport vehicles, automotive industry and general industrial applications. Metal glue can also be used for supporting fasteners: threadlocking and thread sealing are common applications where a metal glue makes sure the fastener does not loosen over time.

Gluing metal to metal vs. welding

Welding is a common method of bonding metal to metal in assembly operations. In a way, welds resemble adhesive bonds: both bonds are uniform and allow for equal stress distribution. They also do not require holes unlike fasteners. However, in applications that make use of welds, the labor costs are likely to be higher as the application requires special training and certificates. The welds also require inspection afterwards, bringing along more costs. With metal to metal adhesive this is not the case as most applications require only basic training and inspection is not necessary.

In bonding metal to metal, adhesives protect from corrosion whereas welds might even encourage it. Using adhesives also eliminates the rapid heating and cooling in a welding process. The drastic temperature fluctuations can cause the metal to weaken or discolor. Metal to metal glue applications usually do not involve as high heat as welding leaving the metal unharmed.

4 types of metal adhesive systems

Generally, metal adhesives can be divided into two groups: machinery adhesive and structural adhesive metal bonding. The latter refer to adhesives that are capable of bearing structural loads. These include epoxy glue for metal and acrylic metal adhesives. The other group is machinery adhesives which include those suitable for threadlocking and thread sealing as well as some special application which do not have to carry structural loads.

4 most common adhesives for gluing metal to metal and metal to other materials

threadlocking of screws with anaerobic metal adhesives
Anaerobic metal adhesives are used only for metal to metal bonding for applications like threadlocking.
  1. Epoxy is one of the strongest adhesives for metal. It exists in different types which have unique properties such as chemical resistance and heat resistance. Epoxies come as one or two component systems. Single component epoxy glue for metal cures as a result of additional heat. A 2K system is a mixture of two parts with react with each other starting the curing process. When looking for the strongest glue for metal, a 2K epoxy for metal should be considered.
  2. Acrylic metal glue exists as two types: surface activated and and bead on bead acrylics. The latter refers to applying a bead of adhesive on both substrates before connecting them. The bonding starts when the parts comne in contact with each other and become subject to pressure. Surface activated acrylics, in turn, require a water thin initiator applied to one substrate and the resin to the other.
  3. Cyanoacrylate, also known as instant adhesive, is the super glue for metal to metal bonding. Cyanoacrylate adhesives is suitable for most metals as long as they are reactive. Therefore, the super glue for metal works better on brass and copper than on steel. Due to the excellent performance as metal glue, commercial cyanoacrylate adhesives are very popular among miniature and modeling hobbyists.
  4. Anaerobic metal adhesives are only used for gluing metal to metal as they require presence of metal and absence of oxygen to be able to cure. Anaerobic adhesives are ideal for securing fasteners in terms of threadlocking and thread sealing as well as gasketing and retaining.

Other metal adhesives

Metal bonding can additionally, be realized by using MS (modified silane) polymers which are common when bonding metal sheets in vehicles like trains and buses. When invisible bonds are required, UV curable transparent systems should be considered. In case you are curious for more metal bonding solutions, contact us and let our experts guide you through the possibilities.

Bonding solutions for different types of metals

Not only are there many types of metal glue, but the range of different types of metals is also broad. Therefore, before choosing an adhesive system, you must know the metal that requires bonding: its properties have a great impact on the choice. Here you will find some common types of metal and suitable metal adhesive systems for different metal bonding applications.

Bonding aluminum with metal glue

When working with aluminum, it should be kept in mind that the metal is prone to corrosion and often has a thin oxide layer on it. The oxide layer forms a good surface for adhesives to adhere, however, the layer does not have a strong bond with the aluminum. Thus, to create strong bonds between aluminum and other materials, the adhesive should not be applied on the oxide layer, the layer should rather be removed. The best method to remove aluminum oxide is using solvent wipes, such as acetone or isopropanol, and abrading or grit blasting the surface.

After the surface preparation by abrasion or grit blasting, and appropriate cleaning, the surface is ready for the metal adhesive. Let’s look at the types of adhesives:

ANAEROBIC ADHESIVES – Even though aluminum is a passive metal, some anaerobic systems can be used for close-fitting concentric parts of threaded components. For softer aluminum alloys, anaerobic glues are suitable for gasketing and flange sealing.

EPOXY SYSTEMS – One component epoxy glues are ideal for aluminum bonding. They are easy to apply and cure fast when heated. Also 2K epoxy glues are suitable for aluminum. They generally form the strongest bonds.

CYANOACRYLATE GLUES – All grades of cyanoacrylate adhesive, instant glue, bond aluminum extremely well. Special formulations of super glue for metal form a considerable option when bonding aluminum to dissimilar surfaces with different coefficients of thermal expansion.

ACRYLICS – Structural acrylic adhesives are very suitable for aluminum. Both types, surface activated and bead to bead acrylics, are suitable for aluminum.

As many types of adhesives meet the needs of aluminum, the choice should be based on the adhesives suitability to your process, desired curing method and the required resistance.

Which metal adhesives bond brass?

Brass is an alloy which consists of zinc and copper. Brass is non-magnetic and resists corrosion: therefore, it is common in pipe joints, hydraulic fittings, heat exchangers, musical instruments and door locks and knobs.

For bonding brass, the options are open as the metal is rather easy to bond and many metal glues adhere well to it. The options include:

CYANOACRYLATE SYSTEMS – When bonding pads to musical instruments cyanoacrylate super glue is a preferred option. The strongest glue for metal often is methyl cyanoacrylates. However, when the bond needs resistance to impact or polar solvents, structural adhesive for metal bonding should be considered.

ANAEROBIC ADHESIVES – Brass is among the most reactive metals which causes anaerobic adhesives to cure much faster than when applied to, for instance, steel. On brass, anaerobic glues are used for threadlocking, thread sealing, form in place gaskets, retaining and weld sealing. These metal bonding adhesives exist as permanent and removable systems depending on the application. The applications also include pipe connections for oxygen and potable water pipelines.

STRUCTURAL ADHESIVES – Both epoxy and acrylic adhesives are highly suitable for bonding brass. Similarly to aluminum, all types are applicable: heat curing 1K epoxy, reactive 2K epoxy, and acrylic glue all do the job depending on the application.

Due to the wide variety of possible metal adhesives for brass, the choice should be based on the needs of the application, the adhesive´s compatibility with existing processes and the environment´s requirements.

Metal adhesives for copper

Copper and its alloys are readily bonded with a wide variety of different metal adhesives. For copper, adhesives are often the preferred option as they do not cause heat damage on the metal unlike soldering.

The most commonly used metal glues for copper include:

ANAEROBIC GLUES – As anaerobic adhesives require the presence of a metal and absence of oxygen to be able to cure fast, copper offers a perfect substrate due to the fact that it is one of the most reactive metals. That is why anaerobic systems cure much faster on copper than many other metals as steel. The uses include threadlocking, thread sealing, weld sealing, gasketing and munitions sealing.

EPOXY GLUE FOR METAL- Both one part, heat curing epoxies and 2K reactive epoxy glues are suitable for bonding copper. Epoxy glue for metal is ideal for forming strong metal to metal and metal to other material bonds.

CYANOACRYLATE ADHESIVES – Instant adhesive for metal offers the fastest curing time and results in increased efficiency. It is also highly compatible with copper. Nonetheless, when polar solvent resistance and impact resistance are the requirements, an epoxy or acrylic adhesive offers the right solution.

ACRYLIC SOLUTIONS – When it comes to acrylics, both surface activated and bead to bead systems support copper bonding. Both result in strong structural bonds.

Stainless steel adhesive systems

Stainless steel is generally an easy metal to bond, however the mirror-finish stainless steel may be a tricky metal to apply adhesives to as it usually has a very low texture surface which prevents adhesion. A Stainless steel surface without mirror-finish requires little to no surface preparation and can be bonded with the following systems:

ANAEROBIC SYSTEMS – threadlockers, thread sealants, gaskets and retaining compounds all work well as glue for stainless steel. However, the curing time of anaerobic adhesives is rather long due to the fact that stainless steel is a passive metal.

CYANOACRYLATE ADHESIVES – All grades bond stainless steel rather well. The strongest bonds form when using special products designed for metals like steel.

STRUCTURAL GLUES – Structural adhesives such as epoxy and acrylics provide heat and chemical resistance. Generally, epoxy is the tougher option, yet it always depends on the application and the environment.

If you are working with mirror-finish stainless steel, before applying any steel adhesives, you should create more texture on the surface. The surface must be roughened, but methods like sandpaper, steel wool or scotch brite are likely to fail due to the hard surface of the material. On the other hand, automated roughening methods may generate heat, which can alter the metal´s surface properties and prevent adhesion. The best way to abrade mirror-finish stainless steel is sandblasting: it is efficient enough and involves no heat.

The strongest metal bonding glue for mild steel

Mild steel, sometimes called carbon steel, is a common material used throughout industries such as automotive and machine building. The key to successful steel bonding lies in proper surface preparation. The surface preparation includes appropriate cleaning and abrasion where needed.

Note that mild steel is often powder coated or otherwise painted prior to adhesive application. Then the metal adhesive forms a bond with the coating layer, not the steel itself.

Cyanoacrylate adhesive tub
Cyanoacrylate adhesive is also known as super glue or instant adhesive as it sets faster than other metal adhesives.

ANAEROBIC SYSTEMS – Threadlockers, thread sealants, gaskets and retaining compounds all work well on mild steel. These result from the use of anaerobic steel adhesive systems.

CYANOACRYLATE GLUES – When strong, fast bonds are a must cyanoacrylate systems are a considerable option. For applications that require polar solvent and impact resistance, structural steel glue systems may offer a more suitable solution. For example retention dressings for bolts and nuts can be realized using cyanoacrylate metal glue.

STRUCTURAL SOLUTIONS – Structural adhesive for metal bonding such as epoxy and acrylics are famous for their heat and chemical resistance. Generally, epoxy is the tougher solution, yet it always depends on the application and the environment.

Several steel adhesive systems are suitable for bonding mild steel: to determine the right one, it is important to consider the correct chemical, weather and temperature resistance.

Metal adhesives for magnets

Strong, even permanent magnets are present in many assemblies, the most important ones being electric motors and speakers. Magnet types differ from each other by strength, cost as well as temperature and corrosion resistance. Some types of magnets include neodymium, rare-earth, AlNiCo, samarium cobalt and ferrites. Usually, magnets allow for bonding without surface preparation. However, to achieve the strongest bonds, isopropanol can be used for cleaning the surface.

There are many metal adhesives that bond magnets more than well. Here are some of the most common metal adhesives for magnets:

CYANOACRYLATE ADHESIVES – These instant adhesives create strong bonds at high speed as their curing time is very short. When the bond must be resistant to polar solvents, high temperatures or impact, structural adhesives should be considered.

EPOXY SOLUTIONS – One and two component epoxies are both suitable for bonding most magnets. One should always confirm the compatibility of the adhesive and the specific magnet by checking with the metal adhesive manufacturer.

ACRYLIC GLUES – Due to the fact that structural surface activated acrylic metal glue systems have a fast set time, they are often a preferred solution for high speed motor assemblies. External 2K mix systems are the alternative.

Looking for the perfect metal bonding adhesive for your application?

The range of metal adhesives and types of metals is broad making the choice of an adhesive extremely tricky. Our experts are always willing to share their expertise and guide you towards the ideal solution. Hit the button below and find the perfect metal glue for your application.

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EXTRA: the best metal glue for DIYers

Metal adhesives not only are industrial systems, but they also often come in handy for small fixes in and around the house. The types of metal glue that are the most suitable for do-it-yourself applications include epoxy, polyurethane and cyanoacrylate (super glue).

EPOXY – epoxy metal glue can be rigid or flexible, transparent or opaque and fast or slow setting. They are predominantly two part systems and are suitable for applications such as door handles, handrails, table legs and jewellery. Like industrial epoxy adhesive, also the one for home use is heat and chemical resistant as well as suitable for rebuilding, filling and repairing applications.

POLYURETHANE – Polyurethane adheres well to most metals and is water and UV resistant making it ideal for outdoor applications. There are many jobs in and around the house that can benefit from polyurethane metal adhesive. Especially moisture curing polyurethane is often referred to as the best exterior metal adhesive.

CYANOACRYLATE – super glue is perfect for almost any household fix: it is easy to apply and cures in the matter of seconds. Common applications of super glue for metal include car parts, ornaments, appliances and numerous other everyday items. Also miniatures and models as well as prototype electronics can benefit from super glue thanks to its excellent performance in gluing metal.

skin protectant applied under dressing
Heat resistance wood veneer and laminates adhesives

Heat-resistant wood veneers and laminate adhesives

Hot-melt adhesives have long been highly valued for their versatility and strength. Those two qualities cannot be overemphasized—after all, there seem to be as many needs for adhesives as there are adhesives on the market. Of course, product performance can always be improved. While a one-size-fits-all, do-everything, universal adhesive might not quite be on the horizon, recent technological innovations include hot-melt glues that are effective with laminated paper and wrap profiles, are applicable for auxiliary furniture companies and their application machines, and, last but not least, won’t empty your bank account. Read on to learn more.

Qualities to look for in heat-resistant hot-melt adhesives

In spite of claims made in recent years about the end of office work and the so-called revolution of working from home, offices aren’t going away anytime soon—and neither is office furniture. Given looming overhead costs, often narrow profit margins, and the general pressure to survive in the business world, it is essential for office or auxiliary furniture to not only be of high quality, but also quickly and affordably produced. This goes for not only the materials you see on the outside, but also for the material that holds the office furniture (and thereby the office) together: glue.

The basics of hot-melt glues are straightforward. Pick your glue, heat it to the point of melting, and apply with your roller, nozzle or injector. As a hotmelt product, there is always a melting process before applying the glue on the paper foil, wood veneer, laminated product, or other material. Beyond those steps, finding the best fit for a hot-melt adhesive is a matter of which adhesive can withstand the highest temperatures of the melter and roller, while minimizing potential adhesive degradation loss, and whether the materials and surrounding climate make for optimal work conditions.

Auxiliary furniture companies can supply the parts, and wrapping machines can do the dirty work, but it really is the type of adhesive that “glues” everything together—literally. Wooden profile wrapping can be mismanaged if the adhesive used fails to have good bonding quality, with high temperature resistance, in order for the furniture to survive exposure temperatures that run as high as 80-90ºC when applying the adhesive. The above can be accomplished with more conventional adhesives such as EVA hotmelt and PUR hotmelt. EVA and PUR hotmelts, however, can be costly, PUR in particular, and there is no guarantee that EVA hot-melt adhesive will sustain an ideal high temperature resistance. Ideally, a buyer is able to strike a balance between price and quality, and an alternative with a better quality-price radio would be warmly welcome.

In spite of claims made in recent years about the end of office work and the so-called revolution of working from home, offices aren’t going away anytime soon—and neither is office furniture. Given looming overhead costs, often narrow profit margins, and the general pressure to survive in the business world, it is essential for office or auxiliary furniture to not only be of high quality, but also quickly and affordably produced. This goes for not only the materials you see on the outside, but also for the material that holds the office furniture (and thereby the office) together: glue.

The basics of hot-melt glues are straightforward. Pick your glue, heat it to the point of melting, and apply with your roller, nozzle or injector. As a hotmelt product, there is always a melting process before applying the glue on the paper foil, wood veneer, laminated product, or other material. Beyond those steps, finding the best fit for a hot-melt adhesive is a matter of which adhesive can withstand the highest temperatures of the melter and roller, while minimizing potential adhesive degradation loss, and whether the materials and surrounding climate make for optimal work conditions.

Auxiliary furniture companies can supply the parts, and wrapping machines can do the dirty work, but it really is the type of adhesive that “glues” everything together—literally. Wooden profile wrapping can be mismanaged if the adhesive used fails to have good bonding quality, with high temperature resistance, in order for the furniture to survive exposure temperatures that run as high as 80-90ºC when applying the adhesive. The above can be accomplished with more conventional adhesives such as EVA hotmelt and PUR hotmelt. EVA and PUR hotmelts, however, can be costly, PUR in particular, and there is no guarantee that EVA hot-melt adhesive will sustain an ideal high temperature resistance. Ideally, a buyer is able to strike a balance between price and quality, and an alternative with a better quality-price radio would be warmly welcome.

Innovations in laminate adhesive

APAO or Polyolefin hot-melt adhesive is a more recent innovation that can be both higher performance and lower cost in comparison with EVA and PUR. As a non-crystalline adhesive, APAO is flexible and with high initial tack, with a long setting time, making these adhesives ideal in product assembly situations with long open times and the aforementioned extraordinarily high heat resistance. In other words, not only is APAO adhesive adaptable to a vast array of

materials; APAO adhesive is also easily applicable via the various furniture-oriented profile-wrapping machines that are on the market. Furthermore, the better APAO adhesives out there can be stored for 2 years or longer, provided the product is stored under relatively cool conditions (between +5 and +35°), making them dependable long after initial purchase, whether you use it or not. Perhaps closer to the “bottom line” when making a decision is that, at least in comparison with PUR or polyurethane adhesive, an APAO adhesive is simply better priced. A quick check on the internet shows that APAO prices are consistently lower than PUR-based products.

A good, modern laminated paper adhesive does all of the above and more. High performance in terms of good bonding quality does not suffer at high exposure temperatures of 80-90ºC. And, versatility still matters more than we might think. Auxiliary furniture may seem vanilla, but there are so many materials used in the furniture industry that glues need to be developed to wrap profiles of chipboard, hardboard, light paper and melamine paper foils, MDF (medium-density fibreboard), polyester laminates, other fine-grained wood-based materials, or even solid wood. A good profile-wrapping hot melt successfully adheres to all of the above materials and more, and does so in medium high speed machines like Barberan and Duespohl that are equipped with applicators like Nordson, Robatech, or Metler. These are the benefits of APAO, in a nutshell.

With all this information, where to begin? Contact our experts and get guidance on finding the best solution for your furniture substrate bonding needs.

The first step to finding the right hot-melt adhesive is being informed about your options, and at least in that regard, this article should have you covered. But what then? Before your eyes glaze over from comparing hundreds of websites, cut through the advertising and misinformation on the internet and simply reach out to us. We can connect you to experienced vendors and users of APAO adhesives, who in turn can ensure that you work with an adhesive provider with comprehensive after-sales service, including technical support by phone, video call, or even in person, and in-lab quality control as needed. Speak with our representatives and get pointed in the right direction, today.

Elastic adhesives for pvc and parquet flooring

Elastic adhesives to glue for PVC, parquet and other floors

The range of adhesives for PVC, parquet, and other flooring options is wide and diverse. And, most industries don’t have limitless time or finances to try out every option on the market. However, recent developments in silane-modified polymers have led to new, much more versatile glueing solutions. Some of these high-quality adhesives for pre-finished materials go further, as they help establish more environmentally-friendly, low-emission qualities. Read on in order to better understand the choices available in the world of elastic adhesives.

A simpler, cleaner, stronger, more dependable adhesive for installation of wooden parquet

Choices for adhesives for flooring materials such as PVC and parquet isn’t something developers, manufacturers, and contractors should have to think twice about. After materials are chosen, laid down and glued together, a construction project should remain stable and safe. It should be obvious that flooring should not buckle or twist over time, and certainly, it should not come loose. Moreover, there should be no sense of human or environmental risk from the materials used.

Those risks increase as more variables enter the mix, however. Solvents, silicones, and isocyanates all can be inhaled, may have risks related to some diseases such as silicosis, lung cancer, kidney disease, COPD, asthma, gastrointestinal and respiratory tract irritation, and other carcinogentic concerns. Simply put, the materials used in flooring should not be a health risk. At the same time, a good adhesive for PVC and parquet flooring should remain elastic and strong long after curing, or the life of the adhesive will be unacceptably short.

Characteristics and qualities

Silane-based modified polymers manage such a balancing act. Ideal for PVC and wooden parquet installation, a single-component elastic adhesive can employ new technology to establish a high modulus of elasticity in the long term, while also establishing an extremely low VOC emission and being free of isocyanates and silicones. Such polymers that are free of solvents, certified by the French technological institute FCBA (L’Institut Technologique FCBA), can be at A+ glue emission class and exhibit top-level chemical resistance and adhesion.

Old product…new twist?

Whether it is a real estate, public works, or other project, and whether it is a matter of replacing parquet, rubber pavement, PVC, or some other type of pre-finished material, the aim remains to effectively glue materials together for long-lasting durability. Silane-based modified polymers cover all that and more, not only for PVC and parquet but also for lamparquet, planks, and solid wood. Moreover, as more modern radiant floors increase in popularity, demand for suitable adhesives for heated floor also increases. With their combination of durability and elasticity, a shelf life of 12 months, and a level of safety that merits not even needing a risk label, silane-based polymers are ideal for such a floor.

The work involved remains the same: take an industrial serrated spatula and apply the adhesive. And, just as with any adhesive, surfaces must be clean of dust, greases, oils, pollutants, oxides, and other contaminants that would lessen the adhesive quality. However, while the same can be said about, for example, polyurethane or water dispersion adhesives, only silane-based polymers achieve every aim described in this article. Only isocyanate- and silicon-free, silane-based polymers reach glue emission class A+, are free of solvents, achieve extraordinarily low VOC emissions, are a one-component MS elastic adhesive, and are suitable for parquet installation according to the EU’s EN 13489 standard for multi-layer parquet.

What to choose? Contact us to get expert help and the best solution for your industry’s needs.

Of course, specialist flooring distributors can have all the knowledge in the world about the characteristics of the ideal adhesive, but it won’t make a difference unless a developer or manufacturer knows which real-world industry market product is the best fit. Fortunately, some of the more advanced adhesive products available in today’s market offer a combination of being environmentally friendly, easy to apply, and long-lasting. They manage to keep a very low VOC emission. And, the very best can handle just about anything, including the growing market for radiant flooring.

Ideally, the product a contractor chooses is supported by a competent, experienced, easy-to-contact sales team willing to communicate online or in person, as needed. Some adhesive-oriented businesses even offer laboratory testing for different bonding materials. All the more reason to search for the best fit-not just the first fit.

Automotive electronics adhesives

Excellent automotive and electronics glue and sealant in one

We know it’s a common problem in the ever increasingly complex challenges most industries face. How do you keep the number of adhesion failures and adhesion related workshop errors as low as possible, while also reducing the number of different adhesives and sealants you have to stock? To complicate matters, in most branches the end result must be as green as possible, recyclable or even compostable.

This might be especially true if your company produces parts or accessories for the automotive or electronics industry. The range of materials these industries use is so wide: aluminium and other metals, glass, wood, plastics, FRP. The list is endless. So, how do you hold it all together?

It’s part of the deal, you might say, to encounter issues in adhesion or sealing applications, and we’d agree. The ability to detect and find a solution for those issues in the early stages is hugely important. Some might say it can turn out to be the basic distinction between a mediocre company and an industry leader.

In general, adhesion issues may take a while to surface. The parts may already be shipped or past the assembly line of your customer, possibly resulting in warranty claims or even costly product recalls. If you’re a third-party parts or accessories manufacturer, the success of your entire company could depend on it. It’s no surprise you want to play it safe and stick to what you know.

If you are looking for an excellent bonding adhesive or sealant that can take on most materials and applications, you’re in for quite the quest. Contact us to find what you need.

The right electronics glue can make life much easier

Manufacturers will agree it’s often a bit of a balancing act. On the one hand, you need to have the best glue for the job. There are many glues that perform admirably on certain substrates, but not so well on others.

Maybe you have been looking for one that performed well on all the materials in your manufacturing process. Chances are, you couldn’t find one. The solution was to find a different glue for the other substrate combinations. So, over the years, your storage became stocked with a range of adhesives and sealants.

That may have worked for the quality of the products that roll off your production line, but we reckon the floor manager, the buyer and the stock manager may have different views on the efficiency of it all.

The floor manager will tell you that using a wide range of adhesives and sealants also increases the risk of errors on the workfloor. Most glues look pretty much the same, so it’s very easy to load the equipment with the wrong product. Mixing different adhesives in application equipment may cause unpredictable issues that lead to production downtime and costly repairs. The solution could be buying more equipment, one for every type of adhesive, but this comes with a hefty price tag.

Also, the buyer and the stock manager will have their own problems, because buying and stocking gets more complicated as the number of products in storage are increased. These problems are exacerbated by details in buying contracts, stock availability, available warehouse space, shelf life of current stock, and so on. Any reduction in the number of adhesives and sealants would be a welcome relief.

Versatile adhesives for automotive and electronics applications save money

We can think of many applications that will benefit from this. A typical application could be the assembly of air-bags or lighting units for the automotive industry. The fixation of vehicle sensors and gauges to keep them in place, while damaging vibrations are reduced, is another.

An entirely different application could be the adhesion of rfid tags to plastic substrates. Or the construction of parts that don’t require access or disassembly later on.

It is also worth mentioning that many adhesives and sealants are based on natural products, these days. We know of reliable products made with castor oil, for instance. These often don’t contain hazardous solvents, making them a modern and responsible alternative to many other adhesives.

In conclusion, when you’re assembling electronics devices for the automotive industry, or manufacture parts for any other industry for that matter, you want to reduce the number of gluesand sealants as much as possible, without surrendering adhesion strength and reliability on a wide variety of substrates and materials.

Let’s emphasize again, having an electronics adhesive that bonds easily with many materials can save a lot of time and money. The benefits are even greater when the adhesive also doubles as a reliable sealant.

If you need a specialized adhesive or sealant to replace your current product, contact us for advice.

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Non-slump fiberglass glue for bead application

Strong and versatile adhesive for fiberglass and fiberglass-reinforced polymer substrates

You are probably reading this because you need a specific adhesive for a specific application. Let’s go out on a limb here and guess you are looking for a non-slump adhesive that needs to be applied in the form of beads or lines.

There are a bunch of adhesives that can do that, but sometimes the process requires something a bit more refined. Which fiberglass adhesive will you pick for fiberglass or Glass Fiber Reinforced Polymer (GFRP) or Fiberglass-Reinforced Polymer substrates (FRP)? You’ll want something that has great adhesion to your materials and also gives you enough time for the assembly process. Sometimes you don’t want the initial tack to be too strong, nor do you want it to be too weak.

In some cases, the gel time must be variable too. We know of fiberglass glue that can be accommodated for a shorter or longer gel time, on prescription. Just so you get an adhesive that
truly fits your particular production method.

When you are looking for a fiberglass glue with a number of specific properties for substrates, the search may feel overwhelming. Contact us for advice regarding your adhesive requirements.

Fiberglass glue on your application terms

The most commonly used form of fiberglass adhesive is a mixture of two components. Depending on the intended usage, the components can be altered to perform certain tasks. The new properties depend on the exact combination and chemistry of both components, as well as their mixing ratio.

The end result might bond with a weaker or stronger force. A typical glue for this type of application might bond with >2000 psi to metal substrates, which is sufficient for many applications. Stronger bonding isn’t always necessary. It could even affect the total price of the assembled product, due to more expensive adhesive components, without further improving its final quality. It’s a balancing act, really, to get it just right.

When a production line requires an adhesive to be applied as dotted or lined beads, there’s a number of properties that may be crucial to that particular application. Gel time is one we mentioned earlier, but the bead formation must also be precise.

One reason for that is the glue may be applied in a very specific location, without running of your material. That could cause a number of issues later on. You also want the bead to have nonslump properties, i.e., to stay more or less in the shape and height it has been applied, long enough for the bonding action to take place. You don’t want to worry about sagging or dripping.

Also great for general assembly applications

Finally, it is worth mentioning that there is a green trend for fiberglass adhesives. As in ‘environmentally friendly’. Some are based on natural castor oil and contain no hazardous solvents. This makes it a modern and responsible alternative to many other adhesives.

Maybe this article has made you think about your current fiberglass substrate adhesive. You might consider a new and innovative version as a replacement for your current glue.

When it comes to fiberglass substrates, there are different materials of various properties that spring to mind. Like true fiberglass, FRP and GFRP substrates can often be bonded with the same adhesive.

But some of these adhesives can also gladly bond with polypropylene, steel, and aluminum. It makes sense to check out all your glueing needs, before you decide which adhesive you’re going to use. Properties aside, there may be more economical choices for certain applications.

We know where you can find the best high-tech sealants and adhesives for your specialized application. Contact us for more information.

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metal-to-metal adhesive for aircraft industrie

High-strength metal-to-metal adhesive for aircraft construction

Your company is searching for the best adhesives available for the construction and maintenance of airplanes. In the aerospace industry there is only limited leeway between ‘perfect’ and ‘not good enough’.

In the aircraft branche you can’t get away with less-than-perfectly assembled items. You want stuff to stay put. The reason is clear. In the aerospace industry, construction failures tend to have dire consequences. Delamination, bolts running loose, stuff breaking, these are all issues that you definitely want to avoid.

These are things that cannot be fixed in a standard warranty process. That’s not because it’s a money thing – though we could be talking serious financial claims – but because people’s lives depend on the quality of every part in the structural assembly. Not a lot of leeway here.

When you’re in the business of bolting things together, you need a truly reliable threadlocker. For instance, a two-part epoxy metal-to-metal glue that is made for the job. Contact us, if you want to know more.

Epoxy adhesive threadlocker for secure aircraft assembly applications

It is absolutely true that manufacturing for the aerospace industry means serious business. Words like ‘reliability’ and ‘trust’ come up a lot, when discussing new products or partners. You need the reassurance then, that your particular metal adhesive will not fail you. You can’t cut corners in this business.

For your assembly line you’ll want a high-reactive two-component epoxy adhesive for metal-tometal applications. Not just any glue, but one that is especially developed for securing and locking metal bolts in aircrafts. These bolts must be able to sustain a wide range of forces, temperatures, and vibrations and you want an adhesive that fits these requirements.

The best type would be one with filling properties, to help establishing a perfectly uniform contact surface. This makes the bond even stronger.

For this particular type of assembly, it is also absolutely vital that pin-point application can be guaranteed. You want the adhesive to come in practical quantities, like easy-to-use burst packs that allow economical usage in small increments.

It also must be easy to mix. When an engineer is bolting parts together, they don’t want to mess around with beakers and stirrers. It’s much cleaner and easier to just take a package, break the internal seal and kneed the contents by hand, cut off a corner and apply the mixed adhesive exactly where it’s needed. Come to think of it, this is the only time where cutting corners is actually recommended.

Strong two-component epoxy adhesive that is easy to mix and apply

It is wonderful when the application is as easy as the preparation. Calling it airplane glue could give off the wrong impression, but if the adhesive described above also has a good pot life and a sag-free thixotropy, application could become as relaxed as if building an airplane model. The comparison ends there, of course, but you know what we mean.

It goes without saying – but we still like to emphasize it – that the right threadlocker must also be resistant to FP4 jet fuel and lubrication oils of the type that are generally used in the aerospace industry.

And things are looking up even more when the glue contains not hazardous solvents. That is even more reassuring when you’re working in a confined space, say, a fuselage.

If you need advice on adhesives or sealants, contact us

We know where you can find the best high-tech sealants and adhesives for your specialized application.

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Food-safe plastic adhesive for filter elements

Adhesive for plastic substrates in filter elements

In most industries liquids and gasses are filtered for various purposes and reasons. A wide variety of filtration element types have been developed, all with slightly different properties. These filters or cartridges have become increasingly high-tech over the last decades. Unsurprisingly, more complex structures also require more specialized adhesives and sealants.

Part of the problem is the fact that these products must incorporate a growing number of properties to perform their tasks. Let’s look at a few typical requirements.

The adhesive or sealant must be viscose enough for controlled application, but also fluid enough to maintain a proper and predictable flow during application. Picking an adhesive with the correct thixotropy can greatly prevent application issues during manufacturing.

When used as a bonding agent, that bond must be strong enough to serve its purpose, while also being able to withstand rigorous manual or chemical cleaning methods. And, when the unit is discarded, the unit or parts of it must be recyclable in a manageable way, or biodegradable.

Another vital quality is food safety. Many of these filtration systems are used in industries that process food or beverages, or are part of water purification systems. It goes without saying that every part that comes into contact with food or beverages must be absolutely safe.

Your company requires a high-tech, strong bonding adhesive sealant that is safe for use in the food & beverage industry? Contact us for more information.

Food-safe adhesive for filter elements

Adhesives and sealants made for use in the food and beverage industry preferably don’t contain plasticizers. Using a safe, natural ingredient like castor oil as a base makes a lot of sense.

Castor oil is a natural vegetable oil that is used in a wide range of beauty products and for a number of medical applications. Aside from its boasted useful antimicrobial and antiinflammatory properties, it can also serve as a perfect basis for a number of products, suitable for use in the food & beverages industry, as well as in other applications.

With rules and regulations becoming stricter every year, it can be increasingly hard to find your way in the growing market of adhesives. More so, when these adhesives have to be environmentally friendly and comply to health & safety regulations. This is exacerbated by the fact that every application has its own specific requirements.

Polyurethane adhesive for plastic substrates in filtration cartridges

We often see there is a wish for adhesives that also act as sealants. A typical usage is the manufacturing or assembly of spirally wound filtration membranes or other replacement filter elements, i.e., for filtering of water, dairy products, and beverages.

A two-component polyurethane sealant for plastic substrate components would be a sensible choice. The combination of high strength bonding and permanent elasticity allows for a wide range of applications with only one product. This is a great way to simultaneously streamline your production method and cut costs.

Not just any polyurethane sealant will do. When it comes to filter elements for the food & beverage industry, the adhesives and sealants must be fully compliant with the NSF/ANSI standard 61. Using an unsuitable alternative could lead to undesirable or even unsafe results.

Application suitability, thixotropy and regulations aside, there may be other things to consider as well. Mixing ratios and methods spring to mind, as well as curing times and conditions.

In relation to shipping and compatibility with your production process, you might want to know if it is available in the package format of your preference, like IBC totes or drums.

Looking for an adhesive with specific properties?

adhesives+coatings is specialized in finding the best eco-friendly adhesives and sealants for existing and developing niches. Contact us and we will guide you towards the perfect solution for your requirements.

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Epoxy for substrates with different thermal characteristics

Strong-bonding epoxy adhesive for metal and plastic substrates

One of the common truths in manufacturing is that different materials have different properties. Of course, that is exactly why you pick a particular mix of materials. Every material brings along a number of benefits, and sometimes, a few problems, too.

Probably the most obvious problem is the fact that every material has its own set of characteristics that is affected by temperature changes. Even when their properties still remainwithin your requirements for that particular item, one thing often does change: their physical size.

Materials tend to stretch when heated up, and shrink when cooled down. This wouldn’t be a problem if different materials would behave exactly the same under similar conditions. But, as we all know, they don’t.

When a mix of substrates is bonded with a low or medium strength adhesive, those little differences in stretch or shrinkage will tear the bond, or the substrates, sooner or later. This problem may be exacerbated by differences in substrate thickness. The combination of these elements can become a real manufacturing nightmare.

Does your production line require a high-tech and high-strength epoxy adhesive that can bond a mix of similar or dissimilar substrates, while maintaining a gas-tight and moistureproof protective seal?
Contact us for more information.

So, now you have the challenge of finding the solution to your production nightmare. You know what you need: a high-strength metal to plastic glue that can bond similar and dissimilar substrates together without failing under changing temperatures. Though ‘glue’ is quite the oversimplification when it comes to such a high-tech adhesive.

In general, you’ll find two groups of adhesives. One group is developed to do many things in an acceptable way, the other does one thing extremely well. But how do you pick the right one for your application? You don’t want to try out all of them.

As said, the puzzle is a lot harder to crack when not only the properties of the materials are completely different, but also their thickness forms a defining element in your application.

Before you know it, you end up with a different adhesive for each job. But that will probably introduce a whole new set of issues.

Having to use a range of adhesives will not only burden your buyer and your company inventory manager. It also may add to workplace accidents and increase the number of damaged and useless finished products.

Any experienced manager will know that such a wide variety of adhesives in a workplace will –invariably – lead to application issues. Different adhesives often require different application methods, and sometimes different equipment too. And with two-component adhesives – alsoknown as reactive adhesives – there’s always the possibility that someone accidentally uses the wrong mixing ratio.

The bigger the number of different adhesives in manufacturing environments, the higher the chances of people making mistakes. And guess who ends up paying for the loss?

High-strength adhesive that lets others play well together

There are high-strength adhesives out there that can take care of this nightmare for you. They can glue similar materials together, but also metal to plastic, or plastic to metal. Aluminium (or aluminium, if you’re from Europe), various plastics, rigid vinyl, regardless of the properties of the substrate.

We can find you an epoxy that will achieve an extremely strong bond that can withstand the different thermal expansion properties of the substrates.

On top of that, it will also turn into a gas-tight and moisture-proof seal, forming a protective layer that is insensitive to chemicals and moisture. Adhesion, sealing, protecting; what’s not to like?

Another factor is the ease of application. You want something that has the right thixotropic properties. Preferably with little to no run-off, regardless of the application and layer thickness. An epoxy that you can apply as a thin or thick-film coating would dramatically increase the range of applications and industries it can be used in.

Epoxy adhesive and sealant for in-place laminates of various properties

There’s one thing your application may require that we haven’t mentioned yet. In some cases, the seal between the substrates must not only be gas-tight and moisture-proof, but also shock resistant. By forming a semi-rigid bond, the epoxy also provides resistance to plastic creep, ensuring a sturdy resistance to vibration, impact and thermal shock.

All these properties add up to a formidably versatile epoxy adhesive sealant. While such an adhesive would be particularly suitable for adhering in-place laminates, it may not be limited to that application alone. And the best news is that adhesives+coatings knows which adhesive you need.

We know where you can find the best high-tech sealants and adhesives for your application. If you have special application needs and seek advice, contact us. We’re glad to help you on your way.

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biomass resulting from composting biodegradable adhesive

Biodegradable polymers driven by demand, and necessity

The need for sustainable, even biodegradable polymers – in particular for biodegradable adhesives and compostable glues – has never been greater. The world’s population is growing, living standards are rising and an increasing number of industries are facing the harsh reality of environmental concerns and a demand for sustainability.

Biodegradable adhesive systems now serve a wide variety of industries, from general packaging to the specialized medical sector. With the adhesive systems under continuous development, new applications are frequently introduced. The invention and further improvement of biodegradable glue allow for greener bonding solutions and reduced environmental impact.

Compostable adhesive – a type of biodegradable glue

The terms compostable and biodegradable are often considered synonyms. However, they are not. Biodegradable adhesives refer to glues that break down naturally, eventually. Compostable adhesives are also biodegradable, but they only deserve the title if they comply to a specific break-down process, and do such within a restricted period of time.

Compostable adhesives may break down in domestic or industrial conditions, depending on the adhesive formulation. They take much less time to break down into useful or harmless components than biodegradable materials generally do.

Benefits of biodegradable and compostable adhesive technology

Biodegradable adhesives, including compostable glue, first were available for a very few applications. However, their extremely green approach towards bonding encouraged the development of new systems, suiting an ever-increasing range of applications. General sustainability aside, biodegradable glues come with more benefits:

  • No microplastic pollution: biodegradable adhesives consist of natural materials that do not lead to microplastic pollution at any stage of their lifecycle.
  • Reduced waste processing costs: biodegradable glue breaks down into natural gases and biomass, which reduces waste processing costs. Waste processing does not involve hazardous chemicals. Compostable glue waste is especially economical to process. The breaking down is generally faster than with other biodegradable glue systems.
  • Soil enrichment through waste: the products of breaking down compostable adhesive are suitable for enriching soil and so stimulate growth of plants. Other biodegradable solutions may not be harmful to the environment; however, they do not enrich the soil as effectively as compostable waste.
  • Workplace safety: as biodegradable adhesives are free of hazardous substances, applying the adhesives is safer than when working with other adhesives.
  • Accordance with environmental planning: for example, the UK Plastics Pact requires all plastic packaging to be reusable, recyclable or compostable by 2025. Other similar acts exist and their number is constantly on the rise.

Next to the benefits that lead to reduced environmental impact, biodegradable and compostable adhesives also offer great business opportunities. This especially for adhesive manufacturers and users. Green products are an ever-growing trend, and demand increases by the day. This leads to greater need for both the adhesives and products which use the adhesives to be biodegradable or even compostable.

Examples of biodegradable glue and compostable adhesive systems

In continuous development, biodegradable glue systems become available for more and more applications. The hottest topics of the moment that involve biodegradable glue or even compostable adhesive systems include the following.

  • Hot melt adhesives: especially the packaging industry currently benefits from biodegradable hot melt systems which guarantee an efficient process and a 100% green solution. 
  • Heat seal adhesive: again beneficial to the packaging industry, heat seal adhesives ideal for paper and biofilm applications can be biodegradable.
  • PSA adhesive: compostability can be integrated into pressure sensitive adhesives which allow for applications on tape and labels.

If you are looking to switch to biodegradable bonding, do not hesitate to contact us. Our experts are happy to deliver a greener solution tailored for your product.

compostable adhesive and biodegradable glue in a bag of potato chips
Biodegradable adhesive allows for food packaging material to be converted into biomass and CO2.

How biodegradable glue works

The molecular structure of biodegradable adhesive systems resembles that of natural polymers. However, micro-organisms – such as bacteria – break down the biodegradable materials, hence the name biodegradable. These adhesives exist as liquid solutions and hot melt solutions. Micro-organisms use enzymes to break down the adhesive into carbon dioxide, water and biomass.

As mentioned, to deserve the title ‘compostable’, the adhesive must break down within a specific period of time and under specific conditions, in either domestic or industrial processes. Unsurprisingly, of the two, the industrial one is far more common among compostable glues. Either way, the resulting products of both processes are beneficial, as they can be used for enriching soil, i.e. as compost.

EN 13432 – the European standard for biodegradable materials

Adhesives that are wished to be classified as biodegradable (or compostable) according to EN 13432, must pass four tests. These are biodegradation, disintegration, ecotoxicity and heavy metals test.

According to EN 13432, an adhesive is biodegradable if:

  • 90% of the total mass of the adhesive is converted to CO2 within 180 days;
  • The heavy metals in the product do not exceed the strict limits set in the standard;
  • The products of broken-down adhesive can be used to enrich soil or are not harmful to plant growth in the area;
  • The germination rate and plant biomass in the compost are more than 90% of those in the corresponding blank compost.

Looking for biodegradable adhesive or compostable glue?

As organizations and individuals take social and environmental responsibility more and more seriously, the demand for biodegradable adhesives is increasing. If you need a more sustainable and environmentally-friendly adhesive for your application, contact us. We will go the extra mile to deliver the most eco friendly solution for your application.

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car seats with reactive hot melt adhesives

Increasing demand for PUR and POR reactive hot melt gluers for automotive adhesives

The need for reactive hot melt adhesives has never been greater, thanks to their extraordinary strength and versatility. Reactive hot melt gluers refer to polyurethane (PUR) hot melts and silane-modified polyolefin (POR) adhesives. Both reactive hot melt adhesive types are used in many industries, including the automotive industry, electronics, and construction. In this article, we focus on hot melt gluers for automotive industry assembly and repairs.

Two-stage curing in reactive adhesive technology

Reactive hot melt adhesives are also known as moisture-curing hot melts. This means that the hot melt gluer reaches its final cure as it reacts with moisture in the air and substrate. These adhesives have a two-stage curing profile which divides the process into physical and chemical curing.

  1. Physical setting: shortly after the hot melt gluer has been applied, the physical setting takes place. This allows the adhesive to reach a stage of hardness which allows for further processing and transport.
  2. Chemical crosslinking: the second stage of curing may take hours or even days, depending on adhesive type and moisture present in the environment. During chemical crosslinking, the hot melt gluer loses its thermoplastic properties and becomes thermoset, which means that high heat does not affect it.

The unique curing process makes PUR and POR hot melt adhesives a desired solution for many automotive adhesive applications. They can be used for example in making seats, gluing carpets, bonding foam-based materials, fixing cables, and attaching door sill protectors, as well as bonding emblems and gear knobs. These are not the only applications for reactive hot melt adhesives: the range of possibilities is nearly limitless. Contact us to discover whether PUR or POR hot melt is the solution for your automotive adhesive application.

Benefits of reactive hot melt adhesives as automobile glue

adhesive dispenser for reactive hot melt adhesives
Reactive hot melt adhesives are easy to apply, as long as the right equipment is used.

The reactive hot melt adhesives are not always the cheapest, but they are versatile in use and are a high-quality automobile glue, even on substrates that have been considered “un-glueable”. The automotive adhesives are rather light, which contributes to vehicle weight reduction. They also bond lightweight materials that are crucial in lighter weight vehicles. The application of a hot melt gluer is also rather easy, as long as the right type of hot melt dispenser is used.

The two types, polyurethane and silane-modified polyolefin-based systems, both have their own unique advantages.

What makes polyurethane hot melt adhesives special

Polyurethane hot melt adhesives have a combination of benefits which make a very unique adhesive. The beneficial hot melt gluer properties include the following.

  • Heat resistance: crucial for both finished products and further processing, PUR hot melts are heat-resistant once they have reached the final cure. Heat resistance is not a common property for hot melt adhesives.
  • Low-temperature flexibility: common for polyurethane adhesives, reactive hot melts also remain flexible in low temperatures. Depending on the application, this can be a great advantage.
  • Extraordinary strength: PUR hot melt forms the strongest bonds out of all hot melt adhesives.
  • Excellent adhesion: PUR hot melt adhesives adhere well to a wide range of substrates including lightweight materials that are increasingly used in vehicle assembly.
  • Solvent resistance: polyurethane hot melt adhesives are known for their excellent solvent resistance which opens up more application possibilities.

Share your specifications with us and find out whether PUR hot melt solves your automotive adhesive problems.

When to use POR hot melt adhesives

PUR hot melt adhesives are versatile and have unique characteristics which fit many applications. However, some applications that require reactive hot melt adhesives cannot be realized with PUR: this is when POR hot melt comes into focus. The silane-modified polyolefin-based adhesives share many advantages with polyurethane, but they also adhere to surfaces that are a challenge for PUR hot melt. Untreated, non-polar surfaces such as polypropylene (PP), common in vehicle assembly, can be easily bonded with POR adhesives.

Additionally, even though POR hot melts do not reach the strength of PUR, they form very durable bonds that are more environmentally friendly than those made with other reactive hot melt adhesives. Typical for modified silane based adhesives, POR hot melts do not contain isocyanates. This also means that a hot melt gluer is not labeled as a hazardous good. In some cases, this may be the deciding factor when choosing hot melt automotive adhesives.

Looking for POR or PUR hot melt adhesives, and matching application equipment?

In case you need any assistance in deciding about reactive hot melt adhesives or are looking for hot melt gluer systems for specific applications, contact us!

We value services like:

  • Laboratory testing of adhesives and equipment
  • On-site advice and fast product delivery
  • Support in case of malfunction and repair services by well trained technicians
  • Support in further development towards better bonding
  • Multilingual service

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packaging film with biodegradable heat seal adhesive

Rules and regulations regarding packaging are becoming stricter by the year. Costumers demand a wider choice in products with eco-friendly packaging. The industry must comply or perish. Unfortunately, complying is complicated by the fact that the adhesives used in heat seal packaging have always held back the biodegradability of the entire packaging waste disposal.

How to find the best heat sealant for plastic that is also bio-degradable? How to continue using heat seal food packaging while, at the same time, introduce or expand the use of environmentally compostable materials? AdhesivePlatform can help you find your way in the maze that is heat seal packaging adhesives.

Heat seal adhesives, both blessing and curse

The use of heat seals is well established in the packaging industry. And for a good reason. They help keeping liquids and foods protected against microbes and other contaminants, for as long as the product can be stored.

Heat seal equipment is relatively uncomplicated and can be used with and without a sealing adhesive. Some methods only use heat and/or pressure, to seal or weld two or more layers of matching thermoplastics together. Others use a substrate that has been coated with a thermoplastic heat seal adhesive, possibly applied months before the actual filling and sealing takes place. This can then be shipped and stored until needed, ready for use at the filling line in moment’s notice. This simplifies the logistics involved.

The drawback of traditional plastics and adhesives

Unfortunately, over the last decades we have become aware that the versatility and relative strength of plastics – so favored by the packaging industry – also has a very nasty drawback. We find micro plastics and plastic pollution in soil and marine environments all over the planet, forming a threat to the health of safety of every living thing. This is precisely because of the fact that many types of plastics are relatively indestructible. The call for biodegradable materials has never been louder, and any progressive industrial would do wise to take notice.

Biodegradable heat seal adhesive

The image of the entire packaging industry has improved due to an increasing usage of biodegradable packing materials. Though definitely an improvement, it’s only one step in the right direction. The growing use of eco-friendly adhesives is another.

It is wonderful that the heat seal bonding market is currently experiencing a shift towards biodegradable heat seal adhesives too. Overlooked for a long time, adhesives make up a significant part of packaging waste, often being part of the reason that recycling processes are not as successful as they could be. With only part of the package being biodegradable, the entire package still can’t be treated as 100% biodegradable waste.

Biodegradable heat seal adhesives are versatile

These eco-friendly adhesives are suitable for all paper, biofilm and fiber-based materials commonly used in the packaging industry. The application is the same as their non-biodegradable brethren: either hot melts or liquids are applied to the substrate and let dry. Much like a pressure sensitive adhesive, the heat seal glue forms the final bond when exposed to heat and pressure at the filling and sealing line, hence the name “heat seal”.

Benefits of biodegradable seals in packaging and paper

It goes without saying that the greatest benefit of biodegradable heat-sealing adhesive systems is their environmentally-friendliness and plastic-free formulation. Nevertheless, the heat seal glue brings along also other benefits including:

  • No micro plastic pollution: biodegradable heat seal adhesives break down into CO2 and valuable nutrients.
  • Cyclic process: the nutrients can be used to enrich soil and promote farming activities, reducing landfill sites in the process.
  • Compliance with national and international regulations: many countries have regulations in place to encourage the use of biodegradable heat seal glue. The UK Plastic Pact, to name one, states that all food packaging must be 100% reusable, recyclable or compostable by the year 2025.
  • Meeting consumer and brand owner demands: consumers and brand owners are increasingly conscious about the environment, aiming at eliminating plastic pollution from their respective grocery lists and production lines, and willing to replace them with sustainable, eco-friendly packaging.

Eco-friendly heat seal adhesives are not a gimmick

Biodegradable adhesives are very much accepted in the packaging industry, and recognized for their valuable properties. Their compostability is measured against a number or standards. One such standard is the European Norm EN 13432, which evaluates the adhesive or seal on four factors: biodegradation, disintegration, ecotoxicity and heavy metals. Passing these four tests means the heat seal adhesive is biodegradable according to the standard as presented in the following table.

TestBiodegradable if…
Biodegradation 90% of the total mass of the adhesive is converted to CO2 within 180 days
Disintegration The germination rate and plant biomass in the compost are more than 90% of those in the corresponding blank compost
Ecotoxicity The products of adhesive composting process can be used to enrich soil or are not harmful to plant growth in the area
Heavy metals The heavy metals in the heat seal adhesive do not exceed the strict limits set in the standard

Find a supplier of biodegradable adhesives

Biodegradable heat seal adhesives allow for compostable and plastic-free food safe packaging, reducing the global microplastics pollution. Contact us if you want to know more about biodegradable adhesives and specialized suppliers.

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blue medical tape with wash soluble adhesive

Water-soluble medical tape for surgical solutions

Water-soluble hot-melt medical tape is uniquely designed for sustainability and reuse for surgical procedures. More and more hospitals rely on reusable surgical tape instead of disposable alternatives, and the application and washing processes must be as efficient as possible. A medical adhesive that is 100% water-soluble has been recently developed. This adhesive medical tape adheres to both skin and textile, is easy to apply and remove, and allows for maximum efficiency.

Medical tape that uses these wash-off adhesives is suitable for applications between surgical tape and the patient’s skin. The medical adhesive ensures that surgical tape stays in place and helps create and maintain a sterile, hygienic environment during surgical operations.

Why choose a water-soluble medical adhesive?

Water-soluble medical adhesive is an acrylic pressure and temperature-sensitive system which adheres well to skin and textiles. The double sided medial adhesive tape is ideal for use in medical environments. The surgical tape is also biocompatible. There are additional beneficial characteristics:

  • Water and solvent free: as a medical adhesive, the water-soluble adhesive does not contain any water or solvents. It appears solid at room temperature but is liquidized when the temperature rises.
  • Steam sterilization: the water-soluble adhesive is not affected by steam sterilization, although the heat does promote adhesion due to the temperature-sensitive nature of the self-adhesive material. The medical tape reaches its ultimate strength on the textile side after steam sterilization.
  • Resistant to body fluids: even though the adhesive is water-soluble, it is important to emphasize that the adhesive is more specifically wash-soluble—i.e., water and body fluids do not affect the surgical tape during surgeries.
  • 100% wash soluble: after surgery, reusable tape is prepared for washing. Normally, preparation includes removing medical tape and adhesive residue, but with wash-off medical adhesive this is not necessary. Medical drapes can be washed with the surgical tape, which completely dissolves during the wash.

Other uses of water-soluble adhesive tape

Even though the water-soluble adhesive is designed for use as a medical tape adhesive, its unique properties are useful in other applications, such as in the textile industry. The innovative uses of the adhesive include for instance temporary textile glue, adhesive for modeling and reusable fabrics, as well as water-soluble glue for clothing design. Contact us in case you are interested in the further possibilities of the water-soluble adhesive, or if you would like to know whether water-soluble is the solution for your adhesive needs.

How water-soluble medical tape works

Water-soluble adhesive is a common part of surgical tape systems. These are often double-sided and consist of a carrier which is coated with adhesive on both sides and a liner which can be removed prior to bonding. Medical tape is available with various dimensions and can be customized by adding a print on the carrier.

The tapes with medical wash-off adhesive are mainly applied for two reasons:

  1. to bond medical drapes to skin in order to keep drapes in place during surgery
  2. to create and maintain a sterile, hygienic operating environment

Often, medical glue is applied to surgical tape before being supplied to hospitals or clinics. Drapes must be steam-sterilized before use in operation theaters in order to guarantee sterility and allow medical tape adhesive to reach its ultimate strength. Once sterilized, drapes are placed on the patient and medical drape tape liners are removed so that medical tape adheres to the skin.

After surgery, drapes can be washed without removing the medical tape. The 100% water-soluble adhesive dissolves during the washing process without leaving a trace in the drapes or the washing machine. In addition, the carrier dissolves when washed.

Relevant medical tape adhesive certification

The medical industry is strictly regulated by standards and tests by various parties, and it is crucial to be aware of these regulations when looking for medical tape. For example, CE marking, according to the EU Medical Device Regulation (MDR) 2017/745, is important to look at. Furthermore, one should opt for surgical tape from manufacturers that have been certified according to ISO 13485, which demonstrates the organization´s ability to produce approved medical devices and related products and services.

Additionally, when looking at the medical adhesive, several international standards are applicable. The adhesive should be tested for cytotoxicity, skin irritation, and skin sensitization, among other things, which are included in ISO 10993-5 and ISO 10993-10.

Interested in water-soluble adhesive or tape?

As wash solvability is a rather new characteristic among adhesives, make sure to have your surgical tape supplied by a reliable source. If you are looking for water-soluble adhesive or water-soluble medical tape, contact us. We are happy to connect you with an adhesive specialist with a proven track record of water-soluble bonds.

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Airbus qualified FST adhesive and primer

Aircraft adhesive bonding

Aircraft adhesive bonding is an important topic for both the aviation industry and automotive industry. All companies that work in these fields generally have extremely high demands for the quality and reliability of their materials. Just look at the circumstances under which their products must be able to perform.

  • extreme high and low temperatures
  • shrinkage and expansion due to temperature changes
  • low and high frequency vibrations
  • sudden pressure changes
  • various challenges regarding tensile strength and shearing forces
  • the requirement to add as little weight as possible to the fuselage or wings

All that with the added requirement of predictable reliability for years on end. No small feat.

At the same time, they are very much bound by many requirements regarding safety and the environment. So, it’s no surprise that they want the best materials, with predictable and reliable properties. This is as true for the parts materials, as it is for the adhesives that are used to bond them. It is fair to say that few professional fields – with the possible exception of the medical professions and laboratories – have such high standards as the aviation and automotive industries.

Because you are reading this, you may be looking for a particular solution. This article may help you determine whether you are considering all the elements in your decision chain.

We can help you find the best solution for your particular aircraft adhesive challenge. Click here for more support.

Aircraft adhesion properties to consider

When you work for a company that makes assemblies for the aviation or aerospace industry, the following should come as a familiar description. You are justifiably fastidious when it comes to adhesives. You want them to be predictable and reliable in their intended uses. Most of all, you expect them to support the other materials within the assembly, strengthening the construction, and do not introduce a weak link in your production chain.

The materials used for the huge number of parts in these branches have a wide range of properties. Whether they are metals or plastics, they all must comply with a number of requirements and have certain key product attributes. For most of them it can be said that they must be light, strong, and up for their task.

EFST-compliant aviation adhesives

Aircraft adhesive bonding.

Then there is the safety aspect. While their structural properties can be seen from a safety viewpoint, for this article we also focus on their FST score. You need their Fire, Smoke and Toxicity levels to meet FST regulations. In case of a fire, you want them to be fire resistant or at least fire retardant, and expel a very low amount of smoke and toxic fumes, or none at all. If our customers expect that from their materials, they’ll expect nothing less from their adhesives.

Aircraft adhesives must be incredibly strong when cured, but preferably also easy and safe to work with on the assembly line. They must meet expectations regarding their bonding properties, but they must also comply with FST regulations. They must have a workable gel time, but also a short fixture time. Full cure time should not take forever.

Of course, the wider the range of materials they can be used with, the better it is. Everybody rather stocks a limited number of adhesives, decreasing the costs and needed storage space. Sometimes overlooked is the fact that a smaller number of adhesives, decreases the costs but also the possibility of mistakes. Using an adhesive with a similar but ultimately wrong identification code can lead to costly and possibly dangerous mistakes.

Aerospace polyamide bonding enhancers increase production flexibility

The use of bonding enhancers can greatly improve the effectiveness and flexibility of your assembly line. Scheduling can become easier, preparation time on the line can be reduced, and for many materials the reliability of the bond can be improved. This is true for various metals, but also improves bonding of a number of polyamides (PA6, PA12, PA66, etc.).

You want your bonding enhancer to have a long shelf life, for prolonged storage if you buy in bulk. Once mixed, the bonding enhancer must have a fairly long pot life, giving you ample time to work. With certain bonding enhancers, the treated parts have a nearly indefinite shelf life. This makes it possible to treat parts, in a remote location, transport and store them anywhere you want, all long before the assembly of the finished parts is needed.

FST-compliant interior adhesive for aircraft

Two-component epoxy adhesives cure at room temperature, and can be used with a wide variety of materials that are used in the aviation industry. Some expert adhesives have been developed especially for metal, composites, and a number of thermosets and thermoplastics. They are also FST-compliant (FAR 25.853, ABD0031).

Now, the temperature on your production line heavily influences gel time and fixture time. Higher temperatures shorten these times, and vice versa. Certain adhesives still have quite long gel time and fixture times when applied at around 73°F, but around 150°F these are reduced to single digit minutes. Full cure time under these temperatures goes down from about 5 days to around 15 minutes. Other types will still take double digits to gel or set, even at those higher temperatures. In general, application should be done at the lower end of these values, and the parts should be left to cure in their assembled position until full bonding has been achieved.

Whatever your application and circumstances at your production site, the perfect aircraft adhesive for you is out there. Let us help you find it. We can help you bond with the right supplier. Click here for advice.

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sterile medical adhesive film in abdominal surgery

Sterile surgical systems: medical adhesive film

Operation theaters require a high standard of sterility at all times, to ensure protection of skin during incisions. Surgical glue standards are no different. Medical adhesive film can be of great help when making and gluing incisions, as it maintains a sterile environment during operations as well as guaranteeing maximum efficiency of surgical procedures.    

Medical adhesive film systems vary per manufacturer, however, here we will focus on sterile, transparent incision film which is applicable to disposable surgical drapes and skin prior to sterilization. The medical transparent adhesive film increases surgical glue sterility while at the same time protecting the skin around the operated area during, for instance, a c-section or an abdominal surgery.

Medical transparent adhesive film: components and uses

Medical adhesive film for drapes and skin often consist of a transparent polyurethane layer, a special UV adhesive and a release liner as well as a finger lift. An additional polyethylene layer is possible in order to provide support when in the operation theatre. 

Incision films are the most common in operations such as cesarean sections and abdominal surgery. They are applied for two main reasons:

  1. To maintain a surgical glue’s sterile environment during operations.
  2. To protect the skin around operation areas.

Sterile incision films come in all shapes and sizes and are available with custom dimensions, special adhesive systems, customized perforation and print depending on what is needed. Contact us to find the adhesive film that meets your needs.

Sterile surgical systems prepared by adhesive film manufacturers

One of the most important components of sterile incision films is the adhesive as the characteristics of the film greatly depend upon the properties of the adhesive.

Typically, sterile surgical systems make use of pressure sensitive adhesives which implies that bonds are formed as pressure is applied. This is no different for medical adhesive film. However, the adhesive in incision films is often also temperature sensitive meaning that the body heat of the patient enhances the bonding process. Also UV adhesives are common in medical films as they are easy to apply and guarantee an efficient film production process.

In sterile incision film systems one side is commonly coated with a UV pressure sensitive adhesive. Due to the pressure and temperature sensitive nature of the medical adhesive it adheres well and easily to surgical drapes and skin. 

Benefits of medical adhesive film provided by the adhesive

The purpose of the adhesive is not limited to simply sticking things together while in the operation theater. It also provides the medical transparent adhesive film with beneficial properties. Some properties of the film are increased or supported by the adhesive. The benefits the adhesive contributes to include the following.

  • Breathability: as surgical glue comes in contact with skin, breathability is crucial to avoid any post-surgery skin irritation. Depending on the adhesive and the design of the medical adhesive film (perforated or non-perforated) different levels of breathability can be reached. UV curing adhesives allow for breathability of the adhesive.
  • Resistance to fluids: the adhesive used in incision films is resistant to water and body fluids as well as alcohol and detergents. This prevents the fluids from affecting the skin under the film and so maintains sterile environment during surgical operations.
  • Disinfection: resistance to alcohol and detergents makes it possible to disinfect the film after it has been placed on the drapes and skin to minimize the presence of bacteria and other microorganisms.
  • Maximum performance: during operation theater surgical procedures, the medical adhesive film allows for maximum performance as sterilization can be done on the spot and the clean environment is maintained throughout the operation.

In addition to the benefits the film receives from the adhesive, the adhesive also has advantages regarding the manufacturing process. UV curing adhesives are usually environmentally friendly and allow for efficient, low waste medical adhesive film production. Even though the UV pressure sensitive adhesives are most common in incision films, they are suitable for many more innovative purposes. Contact us to find out whether UV pressure sensitive adhesive is what your product, project or process needs!

Medical adhesive film application procedures

Sterile incision glue can be applied to the drapes prior to being supplied to the end user or at the operation theater setting right before the surgery. In both cases, before placing the film on the patient’s skin, the skin is disinfected by iodine or another disinfectant. The skin is let dry, as the adhesive forms better bonds when applied to a dry surface. Letting the disinfectant dry also increases the level of sterilization. Once the film is in its place, and the liner is removed, it gets sterilized to avoid any microorganisms interfering with the operation.

During the operation incisions are made through the transparent film. Afterwards, the film is removed, appropriately disposed and the wound can be stiched. Note that it is not possible to stitch through the film. 

Sterile incision film system certifications

As the medical industry is strictly regulated by standards and tests by various parties, it is crucial to be aware of some when looking for a medical adhesive film. Next to paramount CE marking according to the EU Medical Device Regulation (MDR) 2017/745, it is important to look for film suppliers who have obtained the ISO 13485 certificate which proves their ability to produce approved medical devices and related products and services.

Additionally, when looking at the adhesive several international standards are applicable. The adhesive should be tested for instance for cytotoxicity, skin irritation and skin sensitization. These are included in ISO 10993-5 and ISO 10993-10.

Looking for medical adhesive film – or just the surgical glue?

As medical adhesive film for surgical operations come in a wide variety of forms, one should always opt for the most suitable product. In case you are looking for a reliable medical adhesive manufacturer with a proven track record of surgical glue systems approved for medical use, do not hesitate to contact us. Our experts are determined to connect your enquiry with the most suitable medical adhesive film manufacturer who can provide you with custom dimensions, perforation, special bonding systems and print on the film.  

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fill level indicator on pneumatic adhesive dispenser for hot melt

Pneumatic dispensers help apply reactive hot melt adhesives

Is your glue gun the right one for your needs? High quality application equipment plays an important role in hot melt adhesive. Depending on the application, either automatic or manual equipment can be used: in this article we introduce a piece of manual equipment, more specifically a pneumatic adhesive dispenser system, designed for reactive hot melt adhesive cartridges made of aluminum.

This hot melt glue gun is designed to tackle some issues known to most pneumatic glue guns: it has a built-in adhesive level indicator and a PTFE coated closed tank. These two design features allow for adhesive waste reduction and increased efficiency as well as greater process reliability resulting in lower TOC (total cost of ownership).

Benefits of of a high quality pneumatic adhesive dispenser gun

Reactive hot melt adhesives can be applied using a pneumatic adhesive dispenser system designed for either beads and dots or spray applications. A pneumatic glue gun for hot melts is a good choice of equipment especially when low to moderate adhesive consumption is expected. The hot melt guns can be used throughout industries, but they have benefits that come in handy especially in automotive assembly, packaging and electronics applications.

When a pneumatic hot melt glue gun has been chosen to be used for manual applications, the adhesive dispenser should be of high quality in order to get the most out of it. This high quality pneumatic glue gun has some characteristics which make it a perfect choice for when low waste and high efficiency are desired.

  • Easy to operate: in order to guarantee efficient use of the hot glue melter and dispenser, a glue gun should have advanced ergonomics, simple parameter settings and one hand closure. Additionally, the level indicator that tells how much adhesive is still left in the cartridge, makes using the hot melt adhesive easier to dispense.
  • Minimum maintenance: another factor that contributes to the hot melt adhesive efficiency in the long run is the need for maintenance. A high quality pneumatic glue gun is often fluoropolymer coated (PTFE) and has a closed tank which together reduce the need for maintenance: no adhesive residue will stick to the tank, which makes changing cartridges easy and reduces failure rate and handling issues.
  • Eco friendly: this model of pneumatic adhesive dispenser has digitally controlled temperature settings which allow for extreme accuracy for hot glue melting. It also has the option to program automatic temperature reduction. This automatically reduces the overall energy consumption and contributes to a smaller carbon footprint. Additionally, the level indicator makes sure all the adhesive is used, cartridges are not changed too eraly and no waste emerges.
  • Versatility: allowance for different spray patterns and a wide range of accessories make this pneumatic hot melt glue gun versatile. Additionally, the hot glue melter can be used for a wide range of reactive adhesives (as long as they come in 310ml aluminum cartridges), which provides even more possibilities.
  • Process reliability: The fill level indicator of this model as well as microprocessor controlled stable temperature and replicable spray patterns increase process reliability.

Summing up all the aforementioned benefits, the best pneumatic hot melt adhesive dispensers have an excellent price-performance ratio. In the long run it pays back the initial investment which may be little higher than with less innovative hot melt glue guns. Our experts can further help you choosing the best pneumatic adhesive dispenser for hot melt!

Pneumatic hot melt glue gun: how it works

A pneumatic adhesive dispenser is made for hot melt adhesives that come in aluminum cartridges. It is fairly easy to operate, has a modern design and innovative features.

pneumatic glue gun for hot melt adhesives on its stand
The pneumatic adhesive dispenser for hot melts has a modern design and innovative features.

Once the glue gun cartridge is placed inside the pneumatic adhesive dispenser and the device is switched on, the cartridge becomes pierced by two spikes: one that pierces the tip of the cartridge and another that goes through the topside of the aluminum cartridge. When the hot melt adhesive trigger is pulled, compressed air flows into the cartridge discharging the adhesive. Note that the glue and the nozzle may be as hot as 200°C.

This model also has a fill level indicator which tells how much hot melt adhesive is left in the cartridge and shows when the cartridge must be changed.

TIP: In order to maximize the efficiency, at least two of the reserve cartridges should be kept in a cartridge preheater which eliminates the need of time consuming heating of the cartridges in the pneumatic adhesive dispenser. A pneumatic adhesive dispenser for hot melts should have a modern design and innovative features.

Buy glue gun for hot melt adhesives

It is not always easy to find the right pneumatic adhesive dispenser for hot melt adhesives: there are many models, prices and features. In case you are interested in high quality pneumatic hot melt guns from manufacturers with a proven track record, contact us and get in touch with a specialist. Our experts are happy to help you buy a glue gun that increases the efficiency of your processes while reducing waste.

Contact us now, and make sure you don’t miss out on the best deals: high quality products, service and advice on buying, testing and implementing as well as repair services when needed.

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laminating film on book covers

Laminated film for paper, foil and nylon bonding

In the paper and packaging industries, laminating film is applied to surfaces such as paper, cardboard, aluminum foil and biofilm. The purpose of laminating film is to provide food and non-food packaging with barrier properties, improved appearance and haptic properties which contribute to the “feel” of a surface.

Laminating films and applications exist as numerous types. Each of them suitable for specific processes. BOPP, nylon and PET laminating film applications are the most common. The different lamination film types are generally suitable for wet bonding and thermal lamination film applications.

Lamination: how to laminate paper, meaning and film types

Adhesive lamination is the process of joining two or more flexible webs together assisted by a bonding agent, usually an adhesive. The substrates making up the webs can be paper film, biofilm or aluminum foil. The adhesive is applied to the less absorbent substrate, and the other web is pressed on it to create two layer laminate.

Lamination exists primarily as two different processes which both use special films made for them: wet lamination and thermal lamination. Here we will take a closer look at the wet lamination and thermal laminating films.

Thermal laminating film – Dry bonding

In a thermal lamination film application (also known as hot film application) the substrate is coated with an adhesive or resin which has a low melting point. This allows the film to be applied using merely heat and pressure. Dry bonding is used in thermal lamination film application, meaning that the adhesive is activated prior to combining the substrates to be bonded

Thermal laminating films are available in different finishes, ranging from matte to high gloss depending on the material the film is made of. They exist as BOPP materials and PET films, as will be explained later on. Thermal lamination films are used for example in book lamination film applications and to laminate magazines, diaries and other printed and unprinted laminate paper products.

• Wet lamination films – Wet bonding

Wet lamination films are used for laminating two substrates, of which one is porous. Also wet lamination films exist as BOPP and PET films. The wet films are suitable for conventional lamination done with dispersion, solvent-based, UV or hotmelt adhesives. The final wet bonding takes place as the substrates are brought together and the adhesive between them is let cure.

These films often have excellent anti-static properties and they are suitable for high speed lamination. Wet laminating films are used for carton and paperboard box lamination as well as document lamination and unprinted paper and packaging.

• Wax lamination

In the wax lamination process, the bonding agent is a wax or a hot melt adhesive which is applied in a molten state to one of the substrates. As a result of the ongoing shift towards greener and recyclable packaging, biodegradable hot melt adhesives have been developed.

The wax lamination process allows for production of paper-paper and paper-aluminum foil laminating, which is common in the packaging of cookies and bakery products.

• Solventless lamination

Another response to the increased demand for more environmentally friendly packaging is provided by solventless adhesives in document lamination processes. Solventless lamination is realized with adhesives that do not contain any solvents. The solventless adhesives are usually multi component systems which curing process starts as the components react with each other.

This laminating film application allows for fast pased production as the adhesive does not require drying.

Lamination film types by lamination material

Laminating films used in the paper and packaging industries come in many types, the three most common lamination film types being: BOPP, PET and nylon. These three differ from each other when it comes to the applications, price and finish. Our experts can further help you choosing the best laminating film for your packaging!

• BOPP lamination film – Biaxially oriented polypropylene

In BOPP materials, the base material is biaxially oriented polypropylene. The lamination is realized by extrusion coating an adhesive on the film and either wet or dry bonding it to the substrate. The film has the properties of a BOPP film on wide side, and the those of the adhesive on the other.

BOPP films are available in various shades and finishes such as matte, silky satin and high gloss. The film contributes to the finished product´s looks and feel. The film creates and excellent moisture barrier which is resistant to chemicals.

• PET laminating film – Biaxially oriented polyethylene terephthalate

Another popular, yet little more expensive laminating film is based on biaxially oriented polyethylene terephthalate – PET. The PET laminating films are also known as polyester films. The PET laminating film is generally used for two-sided printing.

PET films are available as matte and gloss finishes. They are used for instance for menu cards and identification cards with magnetic strips.

• Nylon laminating film – Biaxially oriented nylon-6

Compared to BOPP and PET films, the nylon laminating films are more expensive. However, they have unique properties such as abrasion resistance and are therefore used for example for book covers and jackets. Nylon laminating film is a type of thermal lamination film applied through dry bonding.

Choose the best laminating film for your product

The lamination films are divided into groups by the process and by their base materials: BOPP, PET and Nylon laminating film. However, within these groups there are numerous different types of products which all have their special properties. Therefore, choosing the best laminating film for a specific project is not an easy job.

When choosing a laminating film, consider the following:

a box of perfume with laminating film for packaging
Laminating film used for perfume and other packaging must retain its looks even in harsh environments.
  • Environment: the laminating film will be directly exposed to the environment in the finished product, whether it is the laminate paper cover of a book or an adhesive lamination for a package a perfume. Therefore, for example the exposure to sun, chemicals and heat should be considered.
  • Ease of lamination: when it comes to ease of lamination, the thickness of the lamination material plays a great role. Thick films are often used for laminating graphics, which need to lay flat and remain so. In turn, thin films are preferred on curved and uneven surfaces.
  • Quality of the film: it goes without saying that investing in good quality is costly. However, in any type of lamination, high quality is worth every penny, as a poor quality film can damage the product rather than protecting it.
  • Adhesive: the adhesive of laminating film affects the appearance of the finished products. It is also the substance in direct contact with the substrate. Therefore, the adhesive should be chosen based on the desired looks and the requirements of the substrate.

Need help to find the right lamination film?

In case you are unsure which laminating film is the best for your product and process, do not hesitate to contact us. Our experts are happy to share their expertise with you, and help you find the system that benefits your product the most.

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100% Biodegradable and 100% compostable

Hot melt adhesives are not a new thing. They’ve been around for over half a century now, becoming increasingly versatile and cost-effective. There is an HMA for practically every application on the market. In recent years, the industry has voiced the need for a new development: compostable hot melt adhesives.

Hot melt adhesives are not going away

In modern industrial applications, few adhesives are so commonly used as hot melt adhesives. Their uses seem endless, due to their wide variety. Hot melt glues can be used for the assembly of your cardboard or corrugated boxes and closing the flaps at the end of your packaging line.

HMA’s are used in the wonderful world of electronic devices, where a myriad of uses has been found for assembly lines as well. Hot glue is used as an insulator or fixation on electronics boards and in molded data cables. Once assembled and packed, their packaging is generally sealed with some type of hot melt adhesive as well.

100% Biodegradable and 100% compostable
Black EPDM roofing membrane on flat domestic roof.

The woodworking industry uses hot melt adhesives for a number of things. Think of profile-wrapping a decorative layer on cabinet doors, for instance. Those doors are probably made from laminated wooden panels, which were probably laminated using hot melt glue too. And to assemble their furniture, that same shop may use yet another type of hot melt glue.

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Compostable hot melt adhesives

Matrasses, furniture, toys, electronics, etc. Hot melt glues are abundantly in use, all over the world. You might be forgiven for thinking that the adhesive is only a small – admittedly important – part of the completed product or package. But the law of large numbers dictates that a little bit of every product adds up to a huge amount of glue in total. And if that glue is not biodegradable, the entire product won’t be either. Even if the rest of the product was made from biodegradable or recyclable materials.

Traditionally, hot melt adhesives are petroleum based. Keeping the same wonderful properties while developing biodegradable hot melts proved a pretty hard nut to crack, so we kept using the old stuff. Understandably so, but not anymore.

Today we can start closing the circle. We do not only have biodegradable hot melt adhesives, but even compostable hot melt adhesives are available on the market today.

Compostable hot melt adhesives are the future

We know our way around in the business of adhesives. It is important to keep in mind that there is a huge benefit in it for all of us. If you start using compostable hot melt adhesives, along with compostable product materials and packaging, think of how much material we could save from the landfills.

The industrial world is increasingly capable of building and maintaining a circular economy. Use eco-friendly materials and methods in your production facilities and we might make the world a little better, sooner than you think. Let’s continue this journey by reverting to compostable hot melt adhesives!

You must be warming up to compostable hot melt adhesives by now. Click here to find the proper one for your application.

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Aircraft Sealant Application Solutions

Aircraft sealant solutions

Aviation sealants must maximise convenience, durability, comfort and safety. Failing to prioritise these can negatively affect the life of a plane—not to mention the lives of the people onboard! Characteristics to look for the best aeronautic sealant products for your aircraft needs are versatility, sustainability, ease-of-use, quality of flying experience, and industry compliance.

Characteristics to look for in aircraft sealant products


A plane has countless components. Thus, there are countless needs for technical reinforcements. For example, curing times matter–a sealant can have a faster curing time. This increases convenience, but effectiveness might be compromised. Meanwhile, longer curing times are necessary when gluing larger parts of a plane, such as a wing. Also, an airplane’s various substrates should bond across multiple types of material, and in various application areas. Examples include inserts and brackets, cut-and-fold, or panel assembly. Because aircrafts go through extremes in temperature, the bonding must retain strength across the spectrum. 


A primary value of aircraft sealant is localized structural reinforcement. Thus, durability is paramount for success in aeronautics. If the parts of a plane fail to fit and stick together, or if components suffer from high vibration, the safety and utility of the aircraft are called into question. It is for this reason that airplane glue is a major factor in mitigating plane vibration, as well as reducing overall system costs. If the sealant is flexible and strong, vibration is minimized, maintenance requirements of the aircraft itself decrease, and product longevity increases. 


Bonding Solutions for Aircrafts
Bonding Solutions for Aircrafts.

Is the aircraft sealant easy to apply? Does it make panels easy to assemble? Does the product have a long shelf-life, and can the sealant cure with a relatively smooth finish, requiring little-to-no sanding or machining? Can one airplane sealant handle multiple jobs? These are all important questions to ask when choosing the best aerospace adhesive.

Quality of flying experience

As crucial as it is to keep costs low and effectiveness of construction high, the safety and comfort of the cabin environment is equally important. Aircraft inner acoustics can have an uncomfortable or even distracting, unsafe effect on passengers, crewmembers, or pilots. It is not just the life of the plane that is at stake but the people in it, and, by extension, the willingness to purchase a flight in the first place. Does the aerospace sealant you use fit these aims?

Industry compliance

Flame-smoke-toxicity (FST) regulations are only the beginning. All of the above factors for using the best aerospace sealant products are underscored by the need to be industry compliant across several metrics. Are FAA and EASA flammability regulations met or exceeded? What about EU REACH compliance, or Airbus regulatory codes? Does a sealant contain carcinogenic, mutagenic, or reproduction toxic substances (aka CMRs)? Smoke density and toxicity levels must be kept as low as possible, but also sealants must mitigate any risk of vertical burn. 

Aviation sealant: key types and traits

Different sealants offer different benefits. Several types of aviation sealants offer a range of solutions, namely, bonding, foaming and panel reinforcement sealants.

Bonding Sealants

Sandwich structure panels in aerospace applications have been central to aeronautic efficiency since the 1930s. Today, original equipment manufacturer (OEM) products must consider efficiency at all times. The combination of lightweight materials can carry heavy loads without losing structural integrity, while retaining impact resistance. By definition, engineered bonding sealant solutions work across multiple materials, adhering to various substrates common to the aerospace industry, such as metal, composites, and thermoplastics. By extension, the best bonding sealants have high mechanical qualities and are able to withstand the full range of temperatures to which an aircraft is subjected.

Foaming Sealants

Foam pressure-sensitive adhesives offer versatility in terms of honeycomb-core finishing operations for aircraft, be it closing out or reinforcing localized edges and splicing cores. Moreover, because foaming adhesive can be formulated in many different ways, they can be compatible with many different processing methods, be it oven, press, or autoclave. And, foaming adhesive can be made available both in the form of sheets of varying thickness, as well as extruded beads in round or square shape. The result is a wide range of expansion rates, from a fraction larger than the original state, to multiple times the size, and the compatibility to fit within various geometric parameters and pre-impregnated fiber-polymer materials, such as aircraft epoxy or phenolic resin. They cure with a smooth finish, and the innate stickiness of the foam negates any need for additional adhesive for pre-bonding.

Panel Reinforcement Sealant

Due to their hexagonal structure, honeycomb-core panels are as lightweight as aircraft interiors get. Reinforcing these panels is essential in order to apply them in strategic areas, such as edges or localized spaces that require use of inserts or metal hinges, as well as insert bonding and border enhancement. Because panels are often non-metallic, they should meet flame-retardant industry standards. Good reinforcement choices will also impart high mechanical properties upon the honeycomb, such as toughness, strength, and low fatigue. Because panel reinforcement sealant material is homogenous, it has an admirably long shelf-life. In addition, it can be applied manually as a high-viscosity paste, or in a low-viscosity state via mechanized pump. All of the above make panel reinforcement sealants easy to use, as there is no mixing or weighing of different components in order to prepare the material for automatic application.

Let us help you find the best adhesive applicator for your next project. CLICK HERE to learn more.

What is the best adhesive applicator for your industry needs?

When making your choice, consider the key traits listed above: versatility, sustainability, ease-of-use, quality of flying experience, and industry compliance. For example, some aeronautic sealant products offer the “best of both worlds” in that their normal curing times at room temperature can be accelerated at higher temperature. Other sealants are available in differing densities, or are formulated according to specific core schedules. Bonding sealants, for example, can be both tough and versatile: they are ideally offered as one- or two-component adhesives, with open time that can vary from short periods of ten or twenty minutes for immediate bonding, to as long as two hours when bonding larger parts of the plane. In short: the end-goals are usually the same, but the best aerospace sealants offer many paths to get there.

Choose the right aerospace sealant solution. Contact us!

Choosing the right aerospace sealant solution takes time and expertise. Why not reach out to our customer support team for guidance? We can help you identify the best product for you and connect you with our network of industry-leading specialists.

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Glue Mixer Adhesive Pump

Industrial application of mixed glues and other adhesives renewed

The application of mixed glues and adhesives is accurate, efficient and innovative, if one uses the right machine with the best technology. Increasingly, the industry is turning more and more to precise machines and volume-based systems, which dose a specific, consistent amount of adhesive over time.

Characteristics of adhesive applicators

Not all “glue machines” are created equal. There are two main branches of adhesive application machines: pressure-based and volumetric-based. That said, whether one calls it a glue applicator, a glue mixer, an epoxy machine or something else, the products vary as much as the types of adhesive and the range of applications.

A high-quality adhesive applicator should be able to mix and process different types of adhesives:

Glue spraygun.
  • polyurethanes
  • MS polymers
  • SMPs
  • epoxies
  • polysulfides
  • silicon-based adhesives
  • methyl acrylates
  • contact adhesives

Adhesive should be applicable manually or through an automated mechanical system. Generally speaking, adhesive machines can fill around electric components in their casings, inject into empty spaces, such as aluminum profiles, applying sealant increases and even dose into containers for later processing with manual instruments such as brushes or spatulas. Product applications range from industrial filter production to adhesive bonding of metal and glass surfaces to synthetics.

What to look for in an adhesive applicator or industrial glue machine

Adhesive applicators can mix and dose in many different ways. Choosing the “best” one often comes down to good fundamentals:

Minimal to no pulsation. Pressure-based applicators, such as piston pump-based ones, risk pulsations that can cause an inconsistent mix ratio. Volumetric dispensing systems, on the other hand, have the potential for greater consistency in application.

Precision. For obvious reasons, no one wants to apply adhesives inconsistently or dose inaccurately For example, minimal pump slack-tolerance significantly affects accuracy, though many gear pumps lack such advancements that make surfaces perfectly smoothed.

Ease of use. A good adhesive applicator is universally applicable and able to handle jobs both big and small. For example, some epoxies may require 200 bars of pressure, while some adhesives are processed with less than 50 bars. In some situations, a bigger installation is the best suit. In other situations, a compact dosing installation that can simply be set on a table or work bench is the best-suited.

Little to no maintenance required. Polyurethan applicators often have multiple gear pumps to dose in shots as well as continuously, electric motors, and even pulse generators that provide dosing feedback in attempt to maintain mixing ratio consistency. With so much technology in one machine, it is important for the technology to sustain itself. Indeed, the best machines on the market are double-sealed and fitted with hardened layers that practically guarantee a long, maintenance-free lifespan.

Long-lasting and durable. The more components in a product, the more that can go wrong with that product. This is why the best applicator companies offer a wide array of mechanically adjustable options. For example, some applicator guns smartly use components such as bayonet connectors. These reduce or remove altogether the need for cleaning screw-threads. In addition, a well (and ideally, easily) maintained machine has a life span of 15 years or more.

Green. Low energy consumption depends on high efficiency. For example, a good polyurethane machine includes software that safeguards application, such as pot-life control, pressure monitors, speed of dosage, and filling quantity. Some applicators have pot-life monitoring technology that automatically refreshes mixed material and leaves minimal residual waste. The results of the aforementioned are less mess and less waste. This is the foundation for a greener society.

Let us help you find the best adhesive applicator for your next project. CLICK HERE to learn more.

What is the best adhesive applicator for your industry needs?

Liquid adhesive application systems can accommodate low, medium or high-pressure outputs, along with the full spectrum of viscosities and application pressure requirements. For example, some more advanced machines offer automatic calibration, single-component flushing mechanisms, and automatic purging, to ensure that mixing ratios deviate at a minimum.

Often the best adhesive applicators operate using a volume-based system that dispenses adhesive in specific, consistent doses. Unlike pressure-based systems, such as piston pump-based applicators, volume-based applicators can handle differences in viscosity to maintain a stable adhesive yield across a surface. In addition, quality can and should come at an affordable price.

Because there are so many options available, it is important to aim for the best fit. Some applicator producers custom build their equipment for the end-user. It is also important to work with a supplier whose product development and technical service are in-house or sourced to a known network. In this way, possible future repairs can be carried out by staff familiar with the product and who can supervise production as well as repair. Indeed, some glue machine companies have their own engineering department, so that customer needs in terms of software, build and service can be directly integrated into product specifications.

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Do you have questions about adhesive applicators, and what the best fit is for your needs? Contact our customer support team for guidance to identify the product best-suited for you and to connect with industry-leading specialists.

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When you are trying to pick the perfect roofing adhesive (PSA) for your non-woven reinforced polymeric membranes, you quickly run into a number of challenges. The variety is huge (EPDM, SBS, APP, TPS, etc.), and the number of adhesives is even bigger. As technology advances, the number of possible combinations grows.

Black EPDM roofing membrane on flat domestic roof
Black EPDM roofing membrane on flat domestic roof.

You may be used to a certain adhesive, but are you sure that it is the best for your roofing situation? Think of the costs that come with unhappy customers. Do you want to risk using the wrong adhesive? 

Let us help you find the proper EPDM adhesive for your next project and contact us.

Why using the proper adhesive matters

Every type of polymeric membrane has different properties. You need to find a matching roofing glue with the right characteristics. When these are compatible, the job becomes easier and more satisfying. What’s more, the roofing should last for decades. Happy customers make every project great, right?

Roofing adhesive requirements

You are looking for proper, effortless adhesion, while obtaining watertight sheet-to-sheet sealing. Some membranes come with their own self-adhesive border; some just come with a roll of tape.

On both steep and level roofs, applying a coating of roofing glue across the entire membrane surface can have a number of advantages. To begin with, you get to decide what type of EPDM adhesive is used, where it is applied, and how thick. Another is that you’ll know the roofing adhesive used will be new, at the top of its strength and sealing capabilities.

White PVC roofing membrane on flat industrial roof
White PVC roofing membrane on flat industrial roof.

Now, you’ll want to be sure that this really is the best roofing adhesive for your particular project. It almost takes a degree in chemistry nowadays to understand which one to pick. Don’t worry, we got your covered.

Roofing adhesive requirements

The perfect roofing glue must be compatible with your specific roofing membrane. You’ll want to make a combination where you have all of these benefits:

  • High peel on various polymeric materials
  • High SAFT (Shear Adhesion Failure Temperature)
  • High UV-resistance
  • Broad service temperature range
  • Moderate or no change in performance due to ageing
  • Suitable viscosity and rheology for standard hot-melt coating equipment

How do I find the best adhesive for my project?

You care about your project, so you don’t just pick a random EPDM glue off a shelve. There is a huge variety of materials, processes and challenges to consider. Each combination will require careful analysis, to prevent you from ending up with a botched project.

Let us analyze your project and the materials you’re going to use, and you will receive expert advice on the best adhesive, specifically for your project.

Click here for the best way forward.

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Compostable artificial grass
Compostable latex adhesive over backing with natural fibers (sisal, coconut fibers)
Compostable latex adhesive over backing with natural fibers (sisal, coconut fibers).

True eco-friendly latex polymer replacement

Latex has been a household name for decades. It is appreciated in various industries for its properties, and used for a wide variety of products, coatings, sealants, and adhesives. Many everyday products now are made of or contain latex. Its uses are nearly limitless: binders for fabrics, fibers and cords; the main ingredient in coatings for walls, ceilings, paper; adhesives for back-sizing carpets and rugs; sealants for construction work, and countless others.

Many industries rely on latex’s distinct properties. Unfortunately, there is a downside to its many upsides: it isn’t a very eco-friendly material. The additives are to blame, really.

Practically all latex products are laced with a range of substances to enhance certain qualities. Chemicals, plasticines, accelerators, dispersions; all kinds of processes and additives are used to enhance latex performance and durability. Good for the industry and consumers, not so much for our planet.

Ready for the good news?

Let’s stick to latex adhesives for now. The carpet industry uses them as a binder. They are used as a secondary backing to keep fibers and backing firmly joined. At the same time, they add stiffness and bounce to carpets and rugs, while also providing grip on slick surfaces, like tiles or wooden floors. Nice and safe!

Production plant for artificial grass from 100% compostable materials
Production plant for artificial grass from 100% compostable materials.

In a similar fashion, the artificial grass and artificial turf systems industry uses latex adhesives to fixate the artificial grass fibers that are woven through the carpet backing. Their adhesives are much more rugged and resistant to any kind of weather, athletes’ shoes and other abuse, and still last for years.

Modern latex adhesives do the job well, but while real grass can be composted to degrade into organic fertilizer, artificial grass systems can’t. These are currently recyclable at best, but they need costly and time-consuming separation and recycling. Compostable or even bio-degradable? No, generally they’re not.

Good news after all. Latex looks best in green.

Click here to find out why.

An increasing number of components of artificial grass and turf systems are now eco-friendly, bio-degradable, compostable even. Still, latex adhesives are the one factor that keeps these systems from being completely compostable.

A leading polymer technology firm has recently developed a fully compostable latex adhesive. A product that is just as weather-resistant and able to withstand abuse by pro athletes or gardening aficionados.

Compostable artificial grass and backing with compostable latex adhesive.

So far, the missing finishing touch was a fully compostable latex adhesive with the same properties as the old stuff. This now, is no longer a fantasy.

Just think of the products that finally can be made completely compostable due to this innovative adhesive:

  • Fully compostable artificial turf sports fields
  • Fully compostable carpets made from natural fibers, but now with a compostable latex backing:
    • Sisal fiber
    • Seagrass
    • Coconut fiber
    • Wool
    • Cotton

The need for durability and eco-friendly components is not limited to carpets and artificial grass. This new polymer latex replacement can also benefit your area of expertise!

Contact us and you could be the first in your industry to take advantage of this new material. Jump the gun and beat your competitors!

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blue trucks in a row finished with heavy truck and trailer bonding adhesive

Road transport benefits from heavy truck and trailer bonding adhesives

The use of adhesives in road transport vehicles, such as combination vehicles, trucks and trailers, is ever increasing. This is due to the numerous advantages these solutions offer compared to their traditional, mechanical alternatives. Next to the obvious, the heavy truck and trailer bonding adhesive systems are suitable for example for use in vehicles for healthcare and leisure. These include ambulances, caravans and campers and tractors.

Here you will find information on heavy truck structural adhesive systems, metal adhesive for trailers and truck adhesive sealants. Additionally, we will list their advantages and some products used for the most challenging applications.

Benefits beyond bond with truck and trailer bonding adhesives

In vehicle assembly innovative materials are used to make the vehicles more durable and the production process more efficient. Therefore, many production facilities choose for (structural) adhesives instead of more traditional options. The benefits brought along by road transport adhesives include:

  • Design freedom: adhesives do not hinder the design choices, they are applicable so that they do not remain visible.
  • Even stress distribution: heavy truck adhesive systems are applied by spraying, spreading the product or using dots and beads. All these methods allow for a greater surface to bear the stress than when traditional fasteners are used.
  • Material friendly: compared to fasteners like screws, these systems do not damage the materials since they need no holes.
  • Weight saving: adhesives are much lighter in weight than for instance welded bonds. This is of high importance, since the road transport industry is shifting towards lighter materials in for example truck and trailer assembly. For example heavy trailer sandwich panel bonding can greatly benefit from the right type of adhesive.
  • Visual attraction: adhesives can contribute to the visual attributes of trucks, trailers and other vehicles. They are either available in different colors or are paintable.
  • Fast and easy application: the application of these systems can be fully integrated into the production process. It also allows for automation where suitable.
  • Noise and vibration attenuation: important for the truck and trailer assembly, adhesives can absorb shocks and damp noise.
  • Fewer corrosion problems: as there is no metal to metal connection, there is no risk for galvanic action, and so corrosion risk is minimal.

Heavy truck and trailer structural adhesive applications

Adhesives for truck and trailer assembly guarantee strength, durability and elasticity in a wide variety of applications ranging from ambulances and fire engines to bulldozers, buses and touring cars. Additionally, some applications for demanding environments or purposes may require other properties such as chemical resistance and high temperature resistance.

heavy truck and trailer bonding adhesive systems used in ambulance interior
Truck and trailer bonding adhesive systems are in a crucial position for example in ambulance interiors.

The systems for road transport include, sealants, adhesives, adhesive sealants and coatings. These are common for example in the following applications:

  • Bonding and sealing: the sealant, adhesives and truck adhesive sealants are common in creating bonds and seals for windows. The seals and bonds are suitable for windows that consist of mineral glass, polycarbonate or other plastics.
  • Truck structural bonding: many adhesives are suitable for structural bonding of panels, roofing, bodywork and floor elements. The truck and trailer panel adhesive bonding systems include MMA adhesive, which has a unique cure profile.
  • Sealing: sealants play a crucial part in sealing welds, bodywork, chassis parts, panels and interior parts as well as roofing and flooring. Especially MS polymers have an impressive track record in sealing dissimilar materials in trucks, trailers and other road transport vehicles.
  • Coating: floor elements of road transport vehicles benefit from an appropriate floor coating. This can be used in combination with a suitable primer to guarantee most durable results.

Road transport adhesives for a wide range of materials

These systems are generally versatile in use, for they provide sufficient adhesion to materials such as glass fiber reinforced polyester, powder coatings, polycarbonates, PMMA, composite materials as well as glass and metal.

The adhesives for truck and trailer assembly also work for materials which are usually difficult to seal or bond. For instance polypropylene, which has low surface tension and is therefore tricky to glue or seal. However, the use of polypropylene in the vehicle industry is increasing due to its properties such as light weight. Therefore, special products are required.

In case you have an application involving bonding polypropylene or other challenging material, contact us for consultation and suitable products.

Certification of heavy truck and trailer bonding adhesive systems

As road transport includes several types of vehicles suitable for specific environments and purposes, the product certification and standardization hold a paramount position when selecting adhesives. Below you can find some relevant certificates for adhesives for road transport.

  • WheelMark indicates durability in harsh environments. Some adhesive and sealant products for road transport can be certified according to the Maritime Equipment Directive set by the EU. This is due to the fact that similar products are durable enough for use also in ship building and repair.
  • ISEGA assures that heavy truck and trailer bonding adhesives are safe to use in the preparation, processing, treatment, packing, transport and distribution of food. These products must have the lowest risk of contamination, and other hazards. Therefore, the ISEGA certification, together with HACCP, is crucial especially for sealing and bonding products for vehicles that transport food.
  • DNV GL provides functional safety for road transport. DNV GL is a certification body that assesses, among others, products for road transport according to several European and international standards. For road transport these include reliability, availability, maintainability and safety, software and system safety. DNV GL certified sealants and adhesives are up to standards.
  • FMVSS 212 stands for Federal Motor Vehicle Safety Standard. Windshield mounting assesses the strength and durability of windshield (and window) mounting in crash situations. As the windshields and windows in road transport vehicles are often glued and sealed using sealants and adhesives, their behavior in such situations is tested.

Note that similar certificates are also relevant for railway vehicles due to their similar tasks and operating environments.   

Expert consultancy for road transport bonding

Looking for a suitable adhesive for your road transport vehicles, trucks and trailers? You have come to the right place: contact us for information on systems or training, consultancy on the right product or requesting a quote for a specific adhesive system. Our specialists are happy to share their experience and expertise in order to guarantee success for your project.

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adhesives and sealants for buses beeing applied during assembly

Adhesives and sealants for buses replace fasteners

The bus manufacturing industry is currently shifting away from mechanical fasteners and replacing them by adhesives and sealants for buses. The shift towards adhesives and sealants in bus assembly processes is encouraged by the need for increased sustainability, use of composite materials, aerodynamic designs and safety regulations. Buses consume annually some 4.5 million liters (1.2 million gallons) of adhesive alone. The consumption of sealants is also rather high, and ever-increasing. Adhesives and sealants are used for example in bus roof sealing and bonding, floor sealing, as direct glazing adhesive systems as well as in interior panel and trim bonding. 

Here you will find everything you need to know about adhesives and sealants used in different stages of bus manufacturing.

Stronger, lighter safer & faster buses with adhesives and sealants

Adhesives and sealants for buses are designed to meet the requirements of making the process and products stronger, safer, faster and lighter.

  • Stronger: adhesives and sealants increase the durability of buses as they prevent corrosion unlike mechanical fasteners which are prone to cause galvanic corrosion.
  • Lighter: the use of adhesives and sealants instead of mechanical fasteners can lead to up to 80 kg weight reduction. Additionally, adhesives for buses make it possible to bond indifferent materials together without needing to worry about damaging either of the materials.
  • Safer: some adhesives and sealants are designed to damp impact, which makes them improve the buses´ crash test performance. These systems are found especially in interior panel and trim bonding, and as direct glazing adhesive. Also fire retardant adhesives exist contributing to fire safety on board. The fire retardant adhesives used in buses have zero contribution to spreading flames.
  • Faster: not only allow adhesives and sealants for more aerodynamic designs, but they are also faster to process, which reduces the production time of buses.

Bus adhesive and sealant applications from direct glazing to interior trim bonding

As chemical seals and bonds are taking over in the bus industry, the number of applications is continuously increasing. It is not only about making windows watertight with a glazing adhesive but also keeping the body structure together. The adhesive and sealant applications do not solely focus on the frame, interior trim bonding and exterior of the buses, but also contribute to the mechanisms under the hood including engine components and batteries. Below you will find the more specific applications of adhesives and sealants for buses.

Bus body structure bonding

During the assembly of bus body structures, several adhesives and sealants are used in order to prevent corrosion, water ingress and standing water. They also contribute to comfort during long bus rides.

Possible adhesive and sealant solutions

The bonds and seals in the body structure of buses can be realized by various products depending on the application. There are easy to process, one component sealants such as MS polymers which are often green options, as they do not contain harmful isocyanates nor solvents, and their VOC (volatile organic compound) value is close to zero or zero. The growing demand for MS polymers is based on the need for environmentally friendly products. Discover the possibilities of the best MS polymer systems.

Next to MS polymers, the adhesives for body structures are often hybrids of polyurethane and epoxy, and they cure by adding heat.

Benefits of using adhesives and sealants

  • Smooth surface appearance and less rework
  • Increased comfort due to dampening sound and vibration
  • Bonding dissimilar materials increasing design freedom
  • Reduced risk of corrosion

Interior trim bonding

The development of interior design of buses has led to the use of ever-growing mix of plastics and fabrics which require durable and environmentally friendly bonding solutions. Therefore, it is important that adhesives for bus interior trim bonding improve appearance and contribute to comfort.

interior trim of a bus with adhesives for buses
Hot melt adhesives are the most common solution for bus interior trim bonding.

Possible adhesive and sealant solutions

Standards set for bus interior panel and trim bonding encourage the manufacturers to choose for green solutions with as little environmental impact as possible. Therefore, the most common adhesive for bus interiors is hot melt which appears in a solid phase in room temperature, and softens when heated. These adhesives allow for extremely fast processing.

Benefits of using adhesives and sealants

  • Environmentally friendly bonding solutions
  • Improved appearance, no visible fixings
  • Fast production process due to application benefits

Bus floor sealing, side panels, luggage doors and hatches

Bus operators expect outstanding durability from their vehicle regardless of driving conditions. Therefore, the bus must be safe in possible crash situations and it should not degrade due to harsh climatic conditions.

Possible adhesive and sealant solutions

interior trims finished with sealants and adhesives for buses
Elastic polyurethane adhesives and sealants are commonly used to finish bus floors.

For sealing floors, side panels, luggage doors and hatches MS polymers are a common choice as they form watertight seals which are resistant to a wide variety of chemicals. However, the bonding of these applications is often realized with elastic polyurethane adhesives which cure fast and exist as one and two component systems. Also MMA adhesives are common especially in bonding interior panels. Similar solutions are applicable to train interiors.

Benefits of using adhesives and sealants

  • Increased impact safety in the event of a crash
  • Improved comfort due to damping sounds and vibration
  • Better looks as there are no visible fixings
  • Resistance against extreme temperature conditions

Bus roof sealing and bonding

The roof is one of the most important parts of a bus, and the design still is one of the greatest challenges for bus manufacturers. Even though adhesives and sealants give more design freedom and ease the challenge, factors such as high temperature development, thermal expansion coefficients and structural integrity must be taken into account when choosing the bonding and sealing materials.

Note that similar systems are also suitable for gluing antennas and receivers on bus roofs.

Possible adhesive and sealant solutions

Bus roof sealing and bonding require flexible solutions. Therefore, they must not be sensitive to whatever the environment might throw at the roof. The bus roof sealant and adhesive systems are often polyurethane based or hybrid systems. They exist as one and 2 component systems which allow for fast curing, speeding up the production process.

Benefits of using adhesives and sealants

  • Longevity and durability
  • Improved corrosion resistance
  • Improved body stability and reduced fuel consumption due to lighter weight
  • Reduced weight due to the elimination of mechanical fasteners
  • Dampening sound and vibration

Benefits of using adhesives and sealants

  • Increased impact safety in the event of a crash
  • Improved comfort due to damping sounds and vibration
  • Better looks as there are no visible fixings
  • Resistance against xtreme temperature conditions

Front and rear mask adhesives and sealants

The front and rear masks contribute to the aerodynamic design of buses. The use of adhesives and sealants instead of mechanical fasteners allows for more aerodynamic shapes and so contributes to reduced fuel consumption.

Possible adhesive and sealant solutions

Adhesives and sealants for front and rear masks of buses are usually thermoplastics which can be shaped when not completely cured. The solutions include polyurethane and hybrid systems which cure fast allowing for shorter processing times. These adhesive and sealant systems are usually one component solutions, which also makes the processing less laborious.

Benefits of using adhesives and sealants

  • Design freedom due to thermoplastics
  • Reduced weight due to elimination of mechanical fasteners
  • Protection against water and moisture ingress
  • Improved body stability and reduced fuel consumption

Bus direct glazing adhesive and sealant solutions

Glazing adhesives and joint sealants are the oldest chemical sealing and bonding products used in bus assembly lines. They are suitable for sealing and bonding direct glazing application as they provide fast curing times and high initial strength as well as contribute to aerodynamic design and stability of the vehicle. As the glazing of buses involves large and heavy surfaces, the adhesive must be chosen carefully opting for the highest quality. In some cases the direct glazing adhesive require sealing using an appropriate sealant system. Gain more information on the best glazing adhesives and sealants!

Possible adhesive and sealant solutions

direct glazing adhesives and sealants for buses
Direct glazing adhesive and sealant systems are realized with special solutions for buses.

The range of adhesives and joint sealants for direct glazing of buses is broad, and the product should be chosen based on the production process and desired application method. The possible products included MS polymers, silicone sealants and polyurethane based adhesives.

Benefits of using adhesives and sealants

  • Simplification of production processes
  • Cost reduction
  • Shorter processing time due to fast curing products
  • Automated application is possible
  • Protection against water and moisture ingress
  • Improved aerodynamics

Improve efficiency and choose the right products for buses

Choosing the right adhesives and sealants for buses is crucial due to the fact that they contribute to the overall durability, safety, weight and comfort of the vehicle. A wrong choice, however, can make buses degrade faster. Therefore, one should always consider consulting an adhesives and sealants expert before making the final choice.

We at adhesives+coatings are dedicated to help you find the right adhesives and sealants for buses you manufacture. Feel free to contact us for more information about the best solutions, consultancy and finding the solutions your buses need!

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adhesives and sealants for agricultural machinery on green harvester and tractor

Agricultural and construction machinery adhesive increases efficiency

Heavy machinery in agriculture and construction must be safe, reliable and durable with a hint of comfort. In order to meet the requirements, special construction and agricultural machinery adhesive systems replace welded seams and conventional fasteners. Agricultural and construction machinery adhesive solutions enable safer, stronger and quieter equipment and new, improved designs. Here you can find the advantages of bonding, and more specific adhesive applications in construction and agricultural machinery.

Construction and agricultural machinery adhesive benefits

Not only enable agricultural machinery adhesives stronger and quieter equipment, but have more advantages benefitting assembly lines and finished products. Agricultural and construction machinery adhesive systems are used for example in vehicles such as tractors, backhoes, skid steers and combines, cabins and engines, subcomponents such as gearboxes as well as attachments including mowers, harrows, seed drills and balers.

The advantages provided by construction and agricultural machinery adhesive systems include the following.

  • Improving design: using adhesives instead of mechanical means of bonding allows for greater design freedom and improved aerodynamics. This contributes to lower fuel consumption.
  • Optimizing machinery assembly: construction machinery adhesive systems are applicable in several ways meaning that it is possible to find the one that fits your assembly line the best. They are usually faster to apply than mechanical alternatives and their curing time can be reduced to minimum depending on the system.
  • Cutting costs: adhesives generally reduce the production costs as they are cheaper to purchase and apply than the mechanical alternatives. They also reduce the need for expensive repairs saving the farmer money, which makes the product more attractive.
  • Increasing durability: agricultural machinery adhesives result in strong, low maintenance bonds. They also reduce the risk for corrosion by forming a seam between metal surfaces.
  • Reducing weight: as adhesives are remarkably lighter in weight than mechanical, usually metal, fasteners, they reduce the vehicle´s total weight, which leads to lowered fuel consumption. There are also super fast curing solutions which are even lighter than traditional adhesives.
  • Enhancing safety: some bonding systems for agricultural vehicles and construction machinery contribute to safety by improving the vehicle’s performance in crash situations.

Different applications of adhesives for agricultural machinery

In the manufacturing of construction and agricultural vehicles, adhesives play an important role in numerous applications throughout the assembly line from exterior panels to engine components and interior trim. Contact us in case you need any assistance in choosing the right adhesives for your machinery assembly line.

adhesives for tractors in direct glazing
Direct glazing and windscreens are among the oldest applications of adhesives for agricultural machinery.

Adhesives for vehicle windows

One of the oldest adhesive applications in agricultural and construction machinery are direct glazing and windscreens. The bonds increase safety in crash situations, prevent galvanic corrosion and ease the production process.

The products for bonding vehicle windows include MS polymers and polyurethanes. They exist as cold, warm and hot applied products which allow for manual and automated processes. In general the application and curing processes are fast, but they can be made even faster by choosing for super fast curing solutions which do not require a primer.

Agricultural and construction machinery cabin bonding

Before painting the cabins, adhesives are applied to the framework. These contribute to safety with their impact resistance, prevent corrosion of metal parts, reduce the total weight of the vehicle, damp noise and vibration and allow for desired looks as they are paintable. They also form a perfect substrate for the paint: most of the agricultural and construction machinery adhesive solutions are heat resistant and enable later e-coat or powder coating.

The adhesives for cabin bonding of agricultural machinery exist as one and two component systems. Most often they are polyurethane epoxy hybrids which cure fast when heat is applied. They also allow for automated application processes and so ease the assembly. The cabin bonding solutions also exist as environmentally friendly solutions which do not contain solvents or PVC. These are common also in public transportation vehicles such as buses.

Trim shop adhesives for heavy machinery

Adhesives for the trim shop often come with sealing properties. They also provide design freedom and possibilities for aerodynamic design. They are paintable, impact resistant and damp noise and vibration. Additionally, they allow for efficient temperature control by forming an airtight seal which keeps the cabin temperature as wished.

Adhesives and sealants for agricultural machinery used in tractor exterior
Construction and agricultural machinery adhesive systems for doors and closures guarantee quality equal to that of the cabin.

Trim shop adhesives for agricultural machinery exist as thermosetting and thermoplastic materials. They are usually one and two component polyurethanes as well as 2K acrylic solutions. The same systems are suitable as construction machinery adhesive solutions as well as rail vehicles.

Structural bonding for doors and closures

The doors, hood and other closures of construction and agricultural vehicles must meet the same requirements as the cabin. Therefore, adhesives are used to improve crash performance and provide strong bonds (and seals). Additionally, these bonds are often heat resistant to the point that the parts can be e-coated or powder coated.

Structural bonding systems for doors and closures often come as flexible 2K polyurethanes, easy-to-apply and flexible 1K polyurethanes, low preparation 2K acrylic systems and polyurethane hybrids which are strong, flexible and do not require much surface preparation.

Types of agricultural and construction machinery adhesive systems

In agricultural machinery there are many types of bonds which improve reliability and durability of the finished products. Most of the adhesives within the industry are used for either reducing the use of welds and fasteners or protecting and securing flanged, threaded and cylindrical assemblies.

Weld and fastener reduction

One of the main purposes of agricultural machinery adhesive systems is to reduce the use of welds and fasteners; the same counts for construction machinery adhesive systems. Replacing mechanical bonds results in lighter vehicle weight which contributes to lower fuel consumption. The reduction of metal to metal contact reduces corrosion and so increases the overall durability and reliability of the vehicles. Moreover, adhesives allow for design freedom and more appealing aesthetics as they make no holes and the result is uniform, even paintable.
An adhesive that is increasing its popularity in vehicle assembly is methyl methacrylate, which bonds dissimilar materials and has a unique cure profile. Another innovative adhesive is one that relies on MS polymer technology.

Protecting and securing flanged, threaded & cylindrical assemblies

Adhesives play also a role in protecting and securing flanged, threaded and cylindrical assemblies as threadlocking, thread sealing, gasketing and retaining. This enables manufacturers to increase product reliability and reduce downtime and need for later maintenance.

  • Threadlocking: anaerobic (in the absence of air) curing, thermosetting threadlocking solutions are applied to threads of fasteners preventing loosening.
  • Thread sealing: anaerobic curing thread sealing systems fill the space between threaded parts forming an instant low pressure seal which prevents liquid and gas leakages.
  • Gasketing: self-forming gaskets form the perfect seal between components providing maximum face-to-face contact and so reducing the risk for flange face corrosion.
  • Retaining: anaerobic retaining compounds secure bearings, bushings and cylindrical parts making the assemblies stronger and reducing the need for maintenance and expensive repair parts.

Looking for suitable adhesives for agricultural or construction machinery?

The right construction and agricultural machinery adhesive systems are dependent on the manufacturing process, assembly line and the desired looks and performance of the finished product. Therefore, it is not always an easy choice to make. Fortunately, our specialists are always happy to help you by assisting in the process, making product suggestions and bringing you in touch with market-leading suppliers. Simply click on the contact button below and let us know more about your bonding needs.

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comostable pressure sensitive adhesive for tape and labels used behind an eco friendly label

Pressure sensitive adhesive enables compostable labels and tape

The packaging industry has lately been adopting more sustainable processes and greener materials. This is due to national and international regulations, buyers ́ desire for eco-friendly products and general trend towards increased use of renewable materials. This has led to development of PSA adhesive (pressure sensitive adhesive) that allows for compostable labels and tape.

Motivation for biodegradable adhesive labels and tape

Increased plastic pollution in soil and marine environments as well as micro plastic pollution have encouraged development of compostable chemistries. Compostable PSA adhesive allows for biodegradable adhesive tape and labels in, for example, food packaging.

Benefits of pressure sensitive tapes & labels with compostable PSA adhesive

PSA adhesives have long traditions in producing pressure sensitive tapes and labels. Pressure sensitive adhesive is non-reactive, and additional pressure activates the bonding properties. The activation does not require heat, water or solvents, which makes pressure sensitive adhesive tape and labels ideal for fast paced production.

Superior sustainability of biodegradable adhesive labels and tape

PSA adhesive for compostable labels and tape has the advantage of being even more environmentally-friendly than the conventional adhesives for labels and tapes. Compostable adhesives use natural polymers which can be broken to CO2 and nutrients either in industrial or domestic composting processes. The benefits brought along by compostable pressure sensitive adhesives include the following

  • No micro plastic pollution: as compostable PSA adhesives break into CO2 and nutrients, the process does not result in micro plastic pollution.
  • Recycling materials: the nutrients that result from the composting process are suitable for enriching soil and promoting farming activities. They can also reduce the use of landfill sites.
  • Meeting consumer and brand owner needs: consumers and brand owners are ever-more conscious about the environment. Many aim at eliminating plastic pollution and replacing plastics with biodegradable materials and products such as labels and tape.
  • Compliance with national and international regulations: also regulations set for packaging are changing towards sustainability: for example the UK Plastic Pact states that all food packaging must be 100% reusable, recyclable or compostable by 2025. This includes labels and tapes that are present in the packaging.

Get more information on compostable pressure sensitive adhesive systems by contacting us!

When to opt for a compostable PSA adhesive for tapes and labels?

A compostable pressure sensitive adhesive can remarkably increase eco-friendliness of a product. Nevertheless, to benefit from the biodegradability of the adhesive, the other components must be compostable, too. For example, compostable PSA as a labeling adhesive is beneficial only when the label itself can be broken down in a composting process.

In case you are interested in labeling adhesives that allow for increased recycling and decreased environmental impact, but you are not making use of compostable labels or tape, you might consider water or alkali soluble pressure sensitive adhesives. These are disperse in a suitable solution and remarkably increase packaging recyclability. Another option would be a bio-based adhesive which contains natural ingredients, which reduces the environmental impact, but is not a 100% compostable.

Compostable according to EN 13432

Although compostable adhesives are rather new to the market, there are some standards and tests that assess and prove the compostability of the systems. Currently, probably the most important compostability standard for eco-friendly packaging adhesives is European Norm EN 13432. This standard evaluates adhesives in four tests: biodegradation, disintegration, ecotoxicity and heavy metals. The norm not only applies to pressure sensitive adhesives but also others such as biodegradable heat seal systems.

According to EN 13432, an adhesive is compostable when:

  • 90% of the total mass of the adhesive is converted to CO2 within 180 days;
  • The germination rate and plant biomass in the compost are more than 90% of those in the corresponding blank compost;
  • The products of adhesive composting process can be used to enrich soil or are not harmful to plant growth in the area;
  • The product ́s heavy metals do not exceed the strict limits set in the standard.

More information on PSA adhesive for compostable tape and labels

Compostable pressure sensitive adhesives for tapes and labels are the future of the packaging industry. In case you are interested in the possibilities and benefits that come along with these PSA adhesives, contact us! Our experts are happy to help you move towards greener packaging.

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biodegradable hot melt adhesive 100% biodegradable

Biodegradable hot melt adhesive systems reduce environmental impact

To respond to the increased demand for greener packaging solutions, biodegradable hot melt adhesive systems have been developed. The biodegradable hot glue systems function as a means to keep up with the needs of the clients as well as reducing the environmental impact of using adhesives in packaging. Hot melt adhesive is a type of thermoplastic adhesives which becomes liquid when they become subject to heat These adhesives are preferable solutions in many industrial applications as they do not contain any solvents. The 100% biodegradable hot glue sticks are also free of other harmful substances.  

Why choose for biodegradable hot glue?

In general, hot melt adhesives appear in solid form in room temperature but, as an effect of heat, they become liquid. These 100% solid adhesives do not contain any solvents, which reduces their VOC values to close to zero. 

But is hot glue biodegradable? It can be: new technologies allow for biodegradable hot melt adhesives which have the usual properties of hot melts and are compostable. Biodegradable hot glue uses materials from renewable resources. Therefore, it can be broken down by bacteria and other microorganisms.

Biodegradable hot glue systems give many manufacturers a competitive advantage, as environmental values are becoming more and more important. The use of compostable hot melt glue also reduces waste and results in savings in processing costs.

Biodegradable hot melt adhesive technologies

Biodegradable hot melt adhesives are common for example in packaging for take-away products, lamination for tissue paper and textiles as well as in boxes made of bio-based materials. The use of biodegradable hot glue allows for a 100% biodegradable packaging and paper products. The adhesives can be realized through several technologies which are under continuous development. Some of the currently available technologies include the following:

biodegradable hot melt adhesive used in hot drink packaging
Biodegradable hot melt adhesive systems are used for example in take away packaging.
  • Lactic acid based biodegradable hot melt adhesive: lactic acid based hot melt adhesives are 100% biodegradable and easy to modify to perfection with help of additives.
  • Water soluble biodegradable hot glue: these bonding systems are practically not hot melts as they require resolving in water prior to application. The application does not require heat, which reduces the manufacturer´s electricity bill.
  • Biodegradable hot melt beads: biodegradable beads behave like regular hot melt adhesive. They are applicable with hot melt glue machinery and equipment, yet they do not require heat to adhere to substrates.

As the technology improves and the need for biodegradable hot melt adhesives becomes ever-greater, there is room for new innovations. Therefore, even though it might seem there is no compostable hot melt for your application, it is always worth discovering the options. Do not hesitate to contact us for information on the biodegradable possibilities for your process and products.

Lately several new biodegradable glue systems have been developed that conform to the standard EN 13432. These include pressure sensitive tape and label adhesives as well as heat seal bonding solutions.

Biodegradable materials according to EN 13432

When opting for biodegradable hot melt adhesive systems, it might be worth checking whether the adhesive complies with the European standard for compostable materials, EN 13432 . The standard assesses materials based on four tests: biodegradation, disintegration, ecotoxicity and heavy metals.

So, when is hot glue biodegradable? According to EN 13432, an adhesive is compostable if:

  • 90% of the total mass of the adhesive becomes CO2 within 180 days;
  • The products of broken down adhesive can be used to enrich soil or are not harmful to plant growth in the area;
  • The germination rate and plant biomass in the compost are more than 90% of those in the corresponding blank compost;
  • The heavy metals in the product do not exceed the strict limits set in the standard.

Biodegradable hot melt adhesive manufacturers often claim their products are 100% biodegradable, however, the truth may be different. That is why checking for compliance with EN 13432 is often recommended. Note that even the standard does not guarantee the product is 100% biodegradable. However, it implies the product is biodegradable enough to pass the tests.

Discover biodegradable hot glue for your products and process

Biodegradability of hot melt adhesives is becoming more and more desired. Therefore, the systems are under continuous development, and new innovations are frequently brought to the market. Many manufacturers prefer to create biodegradable hot glue systems in cooperation with the end-user to ensure the best possible performance. If you are considering biodegradable hot melt adhesives for your applications, feel free to contact us for more information. We also offer help in getting in touch with hot melt glue manufacturers who are happy to provide you with the most suitable biodegradable hot melts.

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a baby diaper wherenonwoven construction adhesive is used

Hygiene products benefit from nonwoven construction adhesive systems

The largest, and fastest growing, user of nonwoven materials is the hygiene products industry, which means that it also consumes the most nonwoven construction adhesive systems. The materials and adhesives are common in products like baby diapers, adult incontinence products, children’s swim and training pants as well as feminine hygiene pads and shields. The purpose of the nonwoven hygiene construction adhesive solutions is to bond together the different layers of the nonwoven materials. 

Most of the hygiene products are subject to mass production at low cost. The high production and reduced costs are made possible by hygiene adhesive solutions. Even though each product uses only a small amount of adhesive (4%, 1 to 1.5 g in an average baby diaper), the hygiene construction adhesive systems really make a difference. Not only do they efficiently bond components together but also guarantee fit, retention, breathability, absorption and comfortable feel.

Nonwoven hygiene construction adhesive requirements

stack of diapers with nonwoven construction adhesive
Nonwoven construction adhesive systems contribute to product quality and reliability.

The non woven adhesive market is currently confronted by several requirements that derive from several sources. Consumer and brand needs as well as different local and international rules and regulations affect the formulations of adhesives for nonwoven materials. Generally, one should be looking for a nonwoven construction adhesive that meets the following requirements.

Fast and easy to apply

Depending on the required efficiency of the production, the hygiene adhesive solutions must be easy to apply and fast curing in order to keep up with the high paced production. For example an average diaper manufacturer makes between 800 and 1000 baby diapers per minute.

Maintaining product reliability and quality

As the nonwoven construction adhesive bonds together the layers of the hygiene products, it is crucial that the quality of the products does not suffer. Better yet, one should opt for adhesives for nonwoven materials that promote product reliability.

Increased sustainability

One of the most important criteria for hygiene construction adhesives is that it results in products that are environmentally friendly enough to satisfy the consumers´and brand´s needs as well as meeting local and international regulations. The hygiene products that use non woven materials are disposable and therefore, not always considered the most sustainable. However, the nonwoven adhesive market is striving towards hygiene adhesive solutions that result in less waste, can be recycled or even composted. One of the greatest innovations is biodegradability of hot melt adhesives. These are already used in the packaging industry, and about to make an entry in the sector of hygiene products.

Choosing the best hygiene adhesive solution

The choice of adhesive for non woven materials in hygiene products basically comes down to two factors: the required bond strength between layers and effectiveness of elastic bonding. The latter is measured by elastic creep tests and the former by peel strength tests. The poor choice of adhesive can lead to for instance leakages and skin irritation. To avoid any inconvenience, contact us and let our experts find the best hygiene adhesive solutions that meet the requirements of your product needs.

Technologies that make up nonwoven construction adhesives

Traditionally, nonwoven construction adhesive systems can be based on two technologies which are waterborne systems and hot melt adhesives. The former have the advantage of being free of all harmful substances. They also have minimum risk to cause skin irritation. The downside is that water based adhesives tend to need a rather long time to dry.

However, the most reliable and comfortable hygiene products such as diapers, incontinence products, medical wound care products and feminine hygiene pads and shields currently use thermoplastic hot melt systems. These are plastic like 100% solid adhesives which take a liquid form when heated, hence the name hot melt. In general, hot melt adhesives for nonwoven materials allow for high production efficiency, low costs and extreme product reliability.

Advantages of the right adhesive for nonwoven materials

Once the nonwoven construction adhesive is carefully chosen, it can have a great impact on the quality and reliability of the finished products. The adhesive makes sure the nonwoven material remains elastic, seams are flexible and absorption properties are not disturbed. Additionally, ever-improving adhesives allow for thinner products with increased comfort and softness. All in all, thanks to hygiene construction adhesives, diapers, pads and incontinence products:

  • Stay in place
  • Are easy to remove
  • Allow for movement
  • Are discreet and do not show
  • Feel soft and are comfortable to wear
  • Result in less waste

Find the best hygiene adhesive solutions

Are you starting a new project and looking for suitable adhesives for nonwoven materials? Or do you wish to challenge your current adhesive supplier and look for an alternative? Whatever the case, our experts are always happy to assist in finding the most suitable and sustainable nonwoven hygiene construction adhesive that meets the product-specific requirements and results in outstanding finished products. Hit the contact button below and get more information.

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landfill sealants and dump truck

Landfill sealants protect soil and groundwater

Landfills are areas carefully designed and placed in or on top of the ground. Their main purpose being waste disposal, it is crucial that the waste does not get the chance to contaminate the surrounding soil, or more importantly, the groundwater. Therefore, the use of landfill sealants has become a necessity.

Several types of sealants can be used in different parts of landfills. Here we will take a look at those parts as well as the suitable landfill sealants.

Landfill sealants in different parts of the construction

Nowadays most landfills are built in the ground in order to allow efficient processing of the waste water (leachate) and gasses formed in the landfill. The waste is placed into cells, which are covered with soil at the end of each day. A landfill, nonetheless, is much more than the cells, waste and soil: here we will take a look at the other parts that require landfill sealants.

Note that next to actual landfills, similar soil sealants are also applicable in recycling plants and waste processing facilities.

Waste storage and drop-off areas

Some landfills are surrounded by concrete fields which allow for easy drop-off of waste. Others, in turn, have a storage area where the waste is dropped off and later delivered to these areas which often make use of concrete fields of high density, so that the chemicals in the waste do not get to affect the soil. The concrete fields are sealed together using special, impermeable landfill sealants which resist chemicals, abrasion and traffic.

Bottom liner landfill construction

The bottom liner in a landfill construction is the primary protection layer between the landfill and the ground. It is usually made of high density polyethylene (HDPE) plastic. Here, the use of soil sealant systems is possible, yet not necessary, as the seals in HDPE are usually created by applying heat and allowing the parts to melt together.

Leachate collection system

Even when solid waste is disposed of in a landfill, there is always contaminated liquid going to the bottom of the landfill. This calls for special landfill sealants or soil sealant systems. The liquid is called leachate and it appears as a combination of different kinds of chemicals. The leachate is directed into pipelines which take it to leachate collection tanks or ponds nearby. Both the pipelines and the tanks or pond require chemical resistant sealants to prevent soil contamination.

Methane gas collection system

While the waste is laid in the cells covered with a new layer of soil each day, bacteria breaks it down, which results in gases. These waste gases contain some 50% methane, which is a toxic gas that can explode if not processed appropriately. Therefore, each landfill has pipelines which remove the gas from the landfill to be later either naturally vented or control-burnt. Landfill sealants are used in the pipelines embedded in the landfill.

The 2 most common types of sealants for landfill construction

Many sealants are suitable to be used in the different parts of landfill constructions. However, there are two, that are most often chosen for: modified silicone polymers and polysulfide sealants. Contact us for consultation on the best landfill sealants for your application.

1. Polysulfide sealants

The most chemical resistance can be reached with polysulfide sealants which are not affected even by full chemical immersion. Also these sealants are suitable for different materials used in landfills, and they provide sufficient abrasion resistance. These systems are ideal for instance in the landfill liner construction.

The mechanical stress resistance of polysulfide can be increased by adding epoxy into the formulation. Epoxy polysulfide sealants are used for example on concrete fields in waste storage and other locations outside landfills including filling stations and harbors.

2. MS polymer sealants

Modified silane polymer sealants have the beneficial properties of both conventional silicone sealants and polyurethane. They are extremely resistant to chemicals and can be applied to many materials including concrete, plastics and PVC.

As polymer sealants, they are also easily modified in order to give them other beneficial properties. In the case of landfill sealants, these could be abrasion resistance and increased mechanical stress bearing capacity.

Contact us for the right soil protection sealants for your application

Choosing sealants for landfill construction is never an easy job, as landfills are subject to multiple rules and regulations due to the risk of contaminating surrounding soil or groundwater.

Do not hesitate to contact us, if you need any assistance in choosing the right landfill sealants. Our experts are happy to help you find the most efficient and safest systems.

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folder gluing machine applies metallocene hot melt adhesive

Metallocene hot melt adhesive for maximum efficiency

Metallocene hot melt adhesive is a high performance, low temperature adhesive which is suitable for various applications within the packaging industry. The metallocene adhesives are not as common as for example EVA hot melts, but they certainly are a good alternative to other low temperature adhesives thanks to their many beneficial features which we will cover in this article.

Metallocene hot melt adhesive systems are famous for having less volume and being less dense than comparable adhesive systems. Therefore, these adhesives are a common go-to solution when the goal is a strong bond with a minimum amount of adhesive.

6 benefits of metallocene hot melt adhesives

Like many hot melts, also metallocene adhesives can be applied at a low temperature. The low temperature can result in remarkable energy savings, as high heat is not involved. The low application temperature also allows applications on delicate materials such as those common in the packaging industry.

Next to the benefits provided by the low application temperature, metallocene hot melt adhesive systems come with unique advantages. The six most important benefits are listed below.

1. No char or gel formation

One of the ultimate advantages of using metallocene hot melt adhesive is that it does not char or form gel like layers in the application equipment. Keeping the equipment cleaner, these adhesives help prevent clogged nozzles and hoses leading to less downtime and decreased need for equipment maintenance.

2. No Stringing

Metallocene adhesive systems are very special as they do not string. Hot melt stringing can ruin an application by creating a mess or compromising bond strength. Stringing is also a sign of a bad quality hot melt or faulty equipment settings. Choosing for a metallocene hot melt adhesive resolves the stringing issues.

3. Low to no odor

Hot melt adhesives are generally safe as they are a 100% solid and therefore contain no solvents. However, this does not mean that hot melts could not have an unpleasant odor. Fortunately, metallocene adhesives have low to no odor.

4. Temperature resistance

Another remarkable benefit of metallocene hot glue is its resistance to temperature extremes and fluctuation. The adhesive can resist heat up to 70°C and retains its flexibility also in temperatures below 0°C. This makes the adhesive ideal, for instance, for freezer packaging.

5. Long pot life

Due to the thermal stability of the adhesive, it has a relatively long pot life. Longer pot life is directly related to increased efficiency. The adhesive remains good in the tank of the spray equipment even during a short pause from the application. This results in less downtime.

6. Exceptional efficiency

As mentioned before, metallocene hot melt adhesives increase efficiency by minimizing downtime by keeping equipment clean. However, also other factors contribute to higher efficiency. As the adhesive is low in volume and density, a minimum amount of adhesive will suffice to create strong bonds. Compared to alternative systems, up to 40% less adhesive is needed.

Applications with metallocene hot glue

Metallocene hot melt adhesive systems are common in similar applications as EVA adhesives. Both of the glues are common when bonding cardboard or other delicate (packaging) materials. The metallocene adhesives are suitable for assembling boxes, cases and trays that are subject to temperature fluctuation. Even freezer containers can be bonded using this type of hot glue.

As the chemistry behind hot melts is generally safe, there are several products that have got the approval of the FDA. This means that those adhesives are suitable for food packaging.

Metallocene adhesive vs. EVA hot melt

When opting for a low temperature hot melt adhesive, there are generally two options. EVA (ethylene vinyl acetate) and metallocene polyolefin adhesives. Of these two EVA based adhesives are much more common as they result in strong bonds at lower cost than metallocene adhesives. However, the cost comparison can be questioned by various factors.

The initial investment of metallocene hot melt adhesive systems is higher than that of EVA adhesives. However, metallocene hot melt adhesive…

  • … does not char, which keeps the equipment cleaner and reduces maintenance costs.
  • … results in bonds of the same strength requiring up to 40% less adhesive, which decreases material costs.
  • … has longer pot life, which is directly linked to decreased losses due to downtime.

Looking for a low temperature adhesive for packaging?

In case you are looking for a low temperature hot melt adhesive to efficiently bond cardboard and assemble boxes, cases and trays, you should consider metallocene hot melt. To get more information on the adhesive system, or get in touch with a reliable supplier, contact us.

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sealants for ports being used in a harbor

Marine sealants for ports increase durability and protect the soil

Ports are busy areas subject to continuous traffic on and off water. Ships of all sizes come and go picking up and delivering cargo, brought to the port by trucks and trains, and people who have arrived by public or private vehicles. To protect the ports and the large concrete fields in them, special sealants for ports have been developed. As many ports are located at close proximity to seas and salty water, these are usually marine sealants.

The sealants for harbors and ports increase durability and safety as well as protect the soil and water from contamination by chemicals by making the joints impermeable.

3 types of concrete sealants for marine environments

sealants for ports resisting heavy loads and abrasion by container
Epoxy polysulfide sealants for ports result in strong seals which are resistant to chemicals and abrasion.

Ports are harsh environments which require the sealants to be heavy duty qualified. Several types of sealants can be applied to concrete fields in ports for both new concrete and repairs:

Ports are harsh environments which require the sealants to be heavy-duty qualified. Several types of sealants can be applied to concrete fields in ports for both new concrete and repairs:

  1. MS polymer: modified silane sealants retain the chemical resistance of industrial silicone sealants, but they also have increased abrasion and mechanical stress resistance just like polyurethane based systems. These properties make MS polymer sealants an ideal choice for ports as they also commonly have a life expectancy of 25 years.
  2. Polysulfide: polysulfide marine sealants are the ones that provide the chemical resistance especially to fuels and oil. They are not affected by full immersion in fuels. Abrasion and mechanical stress resistance can be achieved by modifying the formulation. These sealants are also very common at airports.
  3. Epoxy polysulfide: when epoxy is combined with polysulfide, it is possible to create extremely strong and abrasion resistant marine sealants without compromising on chemical resistance.

Desired characteristics of sealants for ports

As ports and harbors are located in harsh environments where fresh or seawater are present, exposure to the elements inevitable and where the traffic never stops, the industrial sealants for ports have several desired characteristics which guarantee durability of concrete fields.

sealants for ports requiring seawater resistance
Marine sealants for ports must be resistant to many factors such as seawater, fuels, mechanical stress and abrasion.
  • Resistance to chemicals and water: similarly to bridge foundation sealants, the best sealants for ports are resistant to fresh or seawater depending on the environment’s requirements, and to chemicals ranging from mild acids and gritting salt to fuels and motor oil.
  • Heavy mechanical stress resistance: along with the trucks delivering cargo containers comes the heavy loads. Not only are there heavy loaded trucks but also industrial cranes to move the containers to the ship.
  • Abrasion resistance: ports and harbors are subject to continuous traffic meaning that the marine sealants used on concrete fields must be extremely resistant to abrasion caused by the traffic.
  • Resistance to microorganisms: especially marine environments offer excellent conditions for algae and other microorganisms to grow. They may, however, contribute to faster degradation of concrete. Therefore, the marine sealants must prevent the growth and not be affected by it.
  • Weather resistance: last but not least, sealants used in ports are always exposed to the elements from sunshine to rain to snowfall depending on the location. The uv radiation, temperature fluctuations and wet conditions are not to affect the marine sealant system.

The aforementioned three types of concrete sealants for ports all have these beneficial properties to a certain extent. However, to make the final choice, the required proportions of these properties should be carefully weighed, and the system should be chosen based on its suitability to the specific environment.

What to consider when choosing sealants for harbors and ports?

Next to the physical properties, there are several other factors to consider when choosing a sealant for ports and harbors. These are related to the efficiency of the sealants in the specific environment:

  • Application: marine sealants can be applied through different methods which allow the application to be completed in different time frames. The fastest method is not always the best: one should opt for the most suitable method resulting in the most durable seals.
  • Curing time: different types of sealants for ports require different curing times. Usually the most beneficial sealants cure fast and so minimise downtime. Note that the durability of ultra fast curing marine sealants may be compromised.
  • Durability: sometimes the more complex application method and longer curing time results in an extremely durable sealant which does not require maintenance for the first 25 years. This however, means longer initial downtime.
  • Need for maintenance: some marine sealants may be fast and easy to apply but might not lead to a maintenance free result. Therefore, it is good to consider whether short downtime due to maintenance is desired, or whether initial downtime could be extended in order to reduce the need for maintenance.

Expert advice for choosing the right sealant

Choosing the best marine sealants for ports and harbors is not always as easy a job as one might think. Many factors need to be taken into consideration and the physical properties of the sealant must be as beneficial as possible. Therefore, our experts are happy to help you choose the best possible sealing systems for your port or harbor construction. All you need to do is contact us and share some project details.

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sealants for concrete at gas station in use

Gasoline resistant sealant contributes to safety at gas stations

Gas stations, or filling stations, are designed for refuelling motor vehicles from tanks underneath the stations. At gas stations, harsh chemicals such as gasoline, diesel and motor oil are present at all times. Therefore, the area in and around filling stations must meet certain requirements to guarantee safety. The forecourt is usually made of high density concrete pads which are joined together with a gasoline resistant sealant. Not only is the sealant resistant to gasoline but it also makes sure no fuels and oil can access the soil or groundwater.

The gasoline and diesel resistant sealant systems primarily have three aims:

  1. Keeping the soil and groundwater clean by providing impermeable seals which prevent chemical penetration.
  2. Reducing fire hazard by not contributing to the spread of flames in occasion of fire.
  3. Increasing overall safety when the right product is chosen: protecting the environment and the concrete as well as the people refueling their vehicles.

Characteristics of gasoline and diesel resistant sealant systems

sealants for gas stations around a sewer lid
Sealants for gas stations must be oil, diesel and gasoline resistant, strong and abrasion resistant.

At filling stations, fuels such as diesel and gasoline are present as well as oil spills are possible. They are also subject to almost continuous traffic from heavy loaded trucks to lighter motorcycles which not only drive on the concrete, but also stop to be refueled. Therefore, the most important requirements for gas stations sealants are:

  • Chemical resistance: the sealant must not be affected by fuels and oil but retain its strength and sealing properties even when some fuel is spilled to the ground.
  • Heavy load bearing capacity: even when heavy loaded trucks stop for refueling, the gasoline resistant sealant is not to break or crack.
  • Abrasion resistance: also abrasion resistance is of high importance as the concrete and the sealant are subject to almost continuous traffic.

Note that similar requirements also count for applications at airports and harbors.

The types of diesel and gasoline resistant sealants for gas stations

The gasoline and diesel resistant sealants applied at gas stations are made for heavy duty as the environment is harsher than the most. Even though similar sealants are used for example in bridge expansion joints, the ones for gas stations must be a little more resistant. There are several types of sealants that are suitable for new forecourt concrete and concrete repairs.

  • Polysulfide sealant: The most resistance to fuels can be achieved with polysulfide sealants. These result in impermeable seals which do not degrade even in full fuel immersion. As they are polymer sealants, they can rather easily be modified to possess other properties such as abrasion resistance and increased load bearing capacity.
  • Epoxy polysulfide sealant: epoxy is one of the toughest resins used in sealants. Therefore, it is also suitable for gas stations. An epoxy polysulfide has increased chemical resistance, which together with its strength makes it the toughest gasoline resistant sealant. It is also suitable for concrete repairs.
  • Modified silyl polymer sealant: conventional silicone sealants are known for their chemical resistance, but modified silyl polymer sealants have increased abrasion and heavy mechanical stress resistance.

Contact us for more information and assistance for choosing the best fuel resistant sealant for your project.

What to take into account when choosing a fuel resistant sealant for filling stations

Each country and region has their own rules and regulations for filling station construction. Always check with the local authorities which type of sealant is recommended. There are, however, some general aspects to take into consideration when looking for the perfect diesel, oil and gasoline resistant sealant for concrete at gas stations.

sealants for concrete at filling station
Gasoline, oil and diesel resistant sealant prevents fuels from seeping into the soil or groundwater.
  • Environment: it goes without saying that one of the most important aspects to consider is the environment: is the sealant sufficiently impermeable and oil, diesel and gasoline resistant?
  • Safety: gas stations always have an increased fire hazard due to the presence of flammable flues. Therefore, the gasoline resistant sealant must be fire retardant to a certain point in order to reduce the hazard even when there is gas on concrete.
  • Application and curing time: a filling station is a business where time is money. Therefore, it is good to consider how fast the sealant can be applied and how long it takes before it is hardened. Keeping the downtime at the minimum is desired.
  • Durability and need for maintenance: sometimes it is better to invest in a sealant which application takes longer, but which does not require frequent maintenance. However, it can also be a conscious choice to keep the downtime at its minimum, even if it meant more frequently short periods of maintenance.

Find a oil, diesel and gasoline resistant sealant for gas stations to meet requirements

Gas stations are subject to a wide variety of rules, regulations and standards depending on the country and region. Therefore, the best fuel resistant sealant is not always a straightforward one-off decision. In case you are looking for a sealant (or coating) for concrete at a filling station (new or repair), contact us to get the most suitable solution!

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parking garage sealant applied in a garage

Parking garage sealant for higher durability

Parking garages are usually concrete constructions whose floors consist of concrete fields. These concrete structures include control and isolation joints which require a special parking garage sealant. The parking garage joint sealants contribute to the durability of the concrete structures increasing the overall durability of the garage.

Parking garages are subject to temperature fluctuation, occasional fuel and other chemical spills, heavy mechanical loads and traffic. Therefore, the parking structure sealant must be one that does not deteriorate as an effect of the aforementioned factors.

Desired parking structure sealant properties

Parking garage sealant systems are suitable for sealing parking structure joints in new concrete and for repairing damaged or cracked concrete or asphalt. Both of the parking garage joint sealant applications call for a certain set of properties. These include the following.

  • Flexibility: parking garage caulking and sealing should be realized with a product that retains its flexibility even when subject to temperature changes. The fluctuation in temperature can cause movement of the concrete fields, meaning that the joints also move. The sealant should live with the movement instead of cracking or tearing.
  • Chemical resistance: fuels and oil or occasional spills of other chemicals should not affect the sealant, but it should retain its strength and sealing properties even when it becomes subject to coolant fluids, road salt or fuel spills.
  • Heavy load bearing capacity: the garage sealant is not to be affected by the weight of cars that are parked in the garage. Note that a stronger sealant may be necessary if buses, trucks and other heavy vehicles have access to the parking lot.
  • Abrasion resistance: also abrasion resistance is of high importance as the concrete and the parking structure sealant are subject to almost continuous traffic, comparable to that on bridges. The traffic is caused by cars and other vehicles driving in and out the garage.

3 types of parking garage sealant systems

Due to the different requirements a parking garage may have, there are several types of sealants that are suitable. Here we will introduce three of the most common parking structure sealant systems.

  1. Polysulfide: tough sealants with extremely high resistance to chemicals, especially fuels and motor oil. Also common at gas stations. When an even stronger and tougher system is needed, epoxy can be added to the formula.
  2. Polyurethane: top of the class in flexibility but lacks superior chemical resistance. Polyurethane sealants are among the most common parking structure sealant systems.
  3. Modified silane polymer: chemical resistant like conventional silicone sealant systems with additional abrasion and mechanical stress resistance. Also, flexible like polyurethane.

Tip: where fast repairs are necessary, consider special products designed for speedy concrete repairs. Contact us for custom solutions that fill the needs of specific applications.

Factors that affect the choice of parking structure sealant

The choice of parking garage sealant not only is based on the product type and its physical properties but also on other, practical factors. When choosing a parking garage sealant, application and curing time as well as overall durability should be considered.

parking lot sealant applied in garage floor
When choosing a parking garage sealant, application and curing time as well as overall durability should be considered.
  • Application method and time: whether the parking garage caulking sealant is applied to new concrete or as a means of repair, it is good to consider the time it takes and the method through which it is applied. Complex application methods and long application time usually means more downtime.
  • Curing time: especially for concrete repairs, it might be beneficial to apply and cure the parking lot sealant as fast as possible to open the area for traffic right after application.
  • Need for maintenance: for new concrete, one should opt for a parking structure sealant that lasts long without maintenance. Even though the curing application and curing times of these products may be slightly longer, the garage is not likely to go through downtime any time soon after construction. Minimum maintenance is also important for sealants for ports.

Find the right sealant

Are you looking for the perfect parking garage sealant for your project? Our experts are happy to provide you with assistance in choosing the best possible system, and suggesting solutions. For more information, do not hesitate to contact us!

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finger joints to be joined with EPI glue for wood

Emulsion polymer isocyanate, EPI glue for wood

Emulsion polymer isocyanate, EPI glue is an efficient wood to wood adhesive which consists of two components. The first one is a water based emulsion, and the second one a hardener. The EPI glue formulations can vary as different emulsion and hardener combinations exist. In this article we will focus on a specific emulsion polymer isocyanate which has the benefit of being suitable for all types of wood, hard and soft. It is also suitable for wood with a high moisture content.

This specific EPI glue is suitable for example as a parquet adhesive, adhesive for finger joints and wood panels. The adhesive is also suitable for doors, windows, wood veneer and edge glued panels.

Benefits of EPI glue for wood

This EPI glue combines a water based emulsion adhesive with an isocyanate hardener. The combination comes with several benefits that make this specific glue a considerable choice for several wood to wood bonding applications.

  • Suitable for all kinds of wood: this adhesive bonds all types of wood including hard and soft woods. Even bonding wood with higher moisture content is no problem. This allows for efficiency as one adhesive is suitable for numerous applications.
  • Resistance: this EPI glue is resistant to heat, solvents and moisture, which broadens the range of possible applications and end uses.
  • Energy saving: compared to similar adhesive systems, using this glue may result in energy saving as it is suitable for low to mid temperature press applications.
  • Sustainable: this specific emulsion polymer isocyanate system is water based and does not contain formaldehyde which is classified as hazardous. The glue system has very low VOC content.
  • Easy to export: as no hazardous chemicals are involved in this emulsion polymer isocyanate system, the adhesive and the products that use it are suitable for export without special arrangements.
  • Long storage life: last but not least, the adhesive has a fairly long storage life compared to alternative systems. If properly stored, it stays good for a year, which allows for bulk purchase and possible savings in material costs.

Better than alternative wood to wood adhesives

The benefits outnumber some of the alternative wood to wood adhesive systems:

  • UF – urea formaldehyde: adhesives that contain formaldehyde are very common and effective when bonding wood to wood. However, systems, such as EPI glue, that do not contain formaldehyde are much more user and environmentally friendly.
  • PVA – polyvinyl acetate: PVA adhesives deliver great results in wood to wood bonding, nevertheless, emulsion polymer isocyanate adhesive helps achieve even better and stronger bonds.

Wood to wood adhesive bonding with EPI glue

Due to the numerous benefits that EPI glue brings along, the adhesive is suitable for multiple applications that involve different types of wood. The examples of possible uses include the following.

  • Parquet: as a parquet adhesive, this glue bonds together the different layers during the manufacturing process of parquet.
  • Wood panels: in wood panel bonding, emulsion polymer isocyanate technology can be used to bond different surface materials.
  • Edge glued panels: as the name implies the edges of the panels are glued; EPI glue can be used for this application.

Note that the applications are not limited to the given examples. In case you are considering using EPI glue, contact us and get more information on the possibilities.

Standards to look at when opting for emulsion polymer isocyanate

When opting for an adhesive that uses emulsion polymer isocyanate technology, it is good to look at several standards. These include:

  • CSN EN 14257: Adhesives – Wood adhesives – Determination of tensile strength of lap joints at elevated temperature (WATT ’91)
  • EN-204: Classification of thermoplastic wood adhesives for non- structural applications
  • ASTM D-5751-99: Wet use for laminate joints in non-structural lumber products

This specific system is certified according to EN 14257 and it meets the requirements of EN-204 class d4 which is the highest possible moisture resistance class. The adhesive is also suitable for lamination processes according to ASTM D-5751-99. Note that glulam and cross laminated timber that use this adhesive, can be approved only for non-structural use. In case you are looking for a laminating adhesive for structural timber, check out our article on the topic.

In need of a wood to wood adhesive?

In case you are looking for a wood to wood adhesive and considering using an EPI glue, do not hesitate to contact us. Our adhesive experts will extend your enquiry to a manufacturer with a proven track record in wood bonding. Not only do they provide the product, but you can also count on adhesives samples, material testing and technical support that guarantee the suitability of the adhesive for the specific needs of your project, product and process.

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prefabricated panel systems made with automated glue application machine

New machine enables automated glue application for prefabricated panels

Traditional masonry construction is a time consuming process which involves high transportation costs and possible installation delay due to the weather conditions. The masonry walls also need a lot of space. Fortunately, similar results can be achieved using prefabricated panel systems which are much lighter in weight. That is why the panels are common in facade renovations and refurbishments. However, they are also suitable for new buildings. These panels can be made either manually attaching brick strips on a panel backing board or by using an automated glue applicator. The applicator provides the strips with adhesive dots and places them on the backing board. The automated glue application machine is by far more efficient than manual assembly of the panels. 

Easy and efficient installation of prefabricated panel systems

The new automated glue application machine is suitable for making prefabricated panel systems of common masonry materials. These include for example brick strips, stone, natural stone, tiles, mosaic and glass. It makes it possible to manufacture prefabricated wall panel systems in a conditioned environment. This results in fast paced production and a neat end result of consistent quality. The prefabricated panels can be further processed, packed and easily delivered to the site. The installation can take place in almost any weather conditions. Compared to brickwork, the installation of the panels is also easy even on high rise buildings. 

Benefits of the automated adhesive application machine

If a building has an old brickwork facade that needs maintenance or a change of color, or the facade needs increase in safety in case of fire, it is good to consider replacing the brickwork with prefabricated panels. Better yet, if the panels are made using an automated glue application machine, the renovation is possible in a short period of time. 

The new adhesive application technique allows for making prefabricated panels faster, and automatic application of an adhesive on the stone strip. This machine is suitable for making prefabricated panels with most types of brick slips, stone, glass and ceramic strips. The finished panels are suitable for both new buildings and refurbishments (renovations). Depending on the materials, interior and exterior wall panels can be made. 

The most important benefits summarized

  • Suitable for different adhesive systems: a controlled and beforehand determined load of  the adhesive is dotted on the backing board in one pass in which the stone strip is placed on the adhesive. The machine does not limit to one type of adhesive, but it can vary depending on which materials require bonding.
  • Versatile in use: the machine is suitable for creating different kinds of wall panels. These include for example interior and exterior cladding for new buildings, recladding walls as well as infill panels and soffits.
  • Increased efficiency: this automated glue application machine enables smarter building solutions, faster and requiring less experienced people.  
  • Traditional looks: using this machine allows for the prefabricated panel systems to follow any traditional architectural style. Also more modern looks are achievable. 
  • Neat end results: gluing the brick strips to the panels in a controlled environment, guarantees neat results. 
  • Reduced costs: last but not least, automated glue application in the process of making prefab wall panels can reduce costs. As these panels require less materials, they weigh less, which reduces transportation costs. Not to mention that the high degree of automation requires less skilled manpower.

Efficiency beyond compare with automated glue applicator

The choice of the application method and equipment is often the key to a successful adhesive application. This is also true for making prefabricated wall panel systems. Traditionally the assembly of the prefabricated panel systems is manual and includes applying the adhesive and the brick strips. Using this method and an adhesive such as masonry veneer mortar, the average speed is about 1 square meter per employee per hour. On the other hand, the new automated glue application system for panels allows for an average speed of 20 square meters per hour, and requires two machine operators.

Investment paid back within three years

It goes without saying that the initial investment is significantly higher if one chooses for an automated glue applicator. However, the investment is calculated to be paid back within three years. Less skilled people are needed and the production is sped up. In those three years you will have finished 10 times the work you would have using a manual system.

Interested in the automated glue application machine for making prefabricated panels?

If you are looking to speed up the process of manufacturing prefabricated wall panels using this new patented technology, contact us. We are happy to connect you with the supplier. Next to providing the machinery, the supplier is available to help with the set-up and start of the panel production. Not forgetting the possibility of on-site support and maintenance.

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sealants for bridge foundation applied to bridge footing under water

Bridge foundation sealants increase reliability and safety

One of the most critical parts of a bridge is the foundation: it must be safe and reliable as the weight of the entire bridge lays on it together with the traffic on the bridge. To guarantee bridge safety and construction reliability, bridge foundation sealants are used. The sealants fill and seal joints in the foundation making them watertight. 

Bridge foundation sealants are used especially on bridge footings such as pedestal footing, pile footing and spread footing. Here the sealant can be applied to the pile caps in order to seal the joints between the cap and columns, piles or walls depending on the construction design.

Desired properties of sealants for bridge footing systems

As bridge footing must be absolutely reliable, special sealants are used to prevent water from seeping into the structures. In most of the cases the bridge footings are made of concrete meaning that the bridge foundation sealants must be designed for the specific material. Note that if joints between asphalt and concrete require sealing, a special product is needed. Get more information on these systems by contacting us.

The desired properties of sealants for bridge footing systems include the following.

sealants for bridge foundation applied to a concrete footing
Usually a bridge footing is made of concrete: the bridge foundation sealants must be suitable for the material.
  • Watertight: most importantly, the bridge footing sealant must be water tight. Some products can even be applied underwater.
  • Flexibility: depending on the environment and climate conditions, the footings may be subject to movement caused by temperature fluctuation, heavy traffic on the bridge or soil type. The sealant for bridge foundation must not crack, but be flexible enough to allow the movement. 
  • Resistant to microorganism: the sealant should also be resistant to microorganisms present in the specific environment such as algae and moss. 
  • Chemical resistant: the environment of the footing defines the need for chemical resistance of the bridge sealant. Common chemicals that the sealants may be subject to include fuels, road salt and salt water.

Which properties are the most important for your bridge foundation and which sealant has those? Send us a message to find out!

Determining the best sealant for bridge foundations

The choice of the sealant for foundation should be based on the bridge, footing and foundation type, requirements of the soil and climate as well as the preferences of the applicators. 

Bridge footing sealants include industrial systems such as MS polymers, polymerized and cementitious systems, silicone based solutions as well as polysulfide sealants. Similar systems are also applied to other expansion joints in bridge constructions. To determine the best type of sealants for bridge foundation some factors must be considered.

  • Movement capability: the sealants vary by flexibility. When great movement of the concrete (or asphalt) is expected, a flexible foundation sealant with movement capability between 50% and 100% is recommended.
  • Curing time: the curing time of the sealant is important regarding efficiency. However, the fastest curing solution is not always the most reliable.
  • Pretreatment: also related to efficiency, the pretreatment required to guarantee good adhesion is important. Some bridge foundation sealants can be applied directly to clean concrete whereas others require a primer.
  • Debris accumulation: some sealants let more debris and dirt accumulate than others. This is a factor to consider especially in environments where the chance of pollution is above average.
  • Joint width: the joint width affects the choice of sealant as some are designed for narrow seams and the others perform better in wider joints.

Guarantee bridge reliability with the best bridge foundation sealant

The bridge footing must be appropriately sealed in order to guarantee a foundation which is capable of carrying the weight of the bridge and the traffic on the bridge. There are different types of bridge foundation sealants with different properties, the best one is chosen based on several factors such as the requirements of the environment, type of the bridge and the footing design. Discover which sealant that offers the most reliability to your foundation – get in touch with us!

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expansion joint sealant for bridges applied

Expansion joint sealant for bridges increases construction reliability

Movement joints, better known as expansion joints in bridges, are designed to keep parts together. Additionally, they safely absorb expansion by temperature changes, contracting of building materials and vibration caused by traffic, ground settlement or seismic activity. The behavior of these bridge expansion joints can be unpredictable if not sealed properly. Therefore, to increase construction reliability, the expansion joint sealant systems for bridges should be chosen carefully. The choice should be based on factors such as material, environment and possible hazards.

Requirements for bridge expansion joint systems

The most common expansion joint sealant systems for bridges fall under three categories. These are MS polymers, polysulfide joint sealants and epoxy polysulfide systems. These three types of sealants all meet the most important requirements for bridge joint sealants:

  • Chemical resistance: most bridges are made for vehicle traffic. This means that the bridge joint sealant is likely to come in contact with fuels and their fumes.
  • Flexibility: the purpose of expansion joints is to absorb movement caused by various factors. Therefore, the sealant must be flexible and allow for elastic bonding and sealing. There are several types of flexible joint sealant solutions.
  • Abrasion resistance: nearly continuous traffic by vehicles of different masses should not affect the expansion joint sealant.
  • Load bearing capacity: the expansion joint seal must endure prolonged pressure, for example during a traffic jam.

MS polymer systems as bridge expansion joint sealant

MS polymers, also known as silyl modified polyethers, are a newer addition to expansion joint sealants. The polymer was first developed in Japan in the 1980 ́s and later introduced to the bigger public. MS polymer bridge joint sealant systems offer a sustainable alternative to more conventional systems, as they do not contain solvents, isocyanates or silicone. These sealants are also common in bridge foundations. The advantages of MS polymer bridge joint sealant systems include the following.

MS polymer benefits

  • No bubbling: when isocyanates come into contact with water, the reaction produces CO2 molecules. The reaction may cause bubbling and result in sealant failure. Due to the absence of isocyanate groups, this does not happen with MS polymers.
  • No shrinkage: the MS polymer sealants are 100% solid meaning that they contain neither solvents nor water. Other water or solvent based systems cure through evaporation, which leads to shrinkage of the expansion joint seal as the density increases and volume decreases.
  • Easy and fast application: MS polymer based products require minimum surface preparation, are applicable without a primer and adhere to most surfaces, even damp ones. Contact us and find out more about MS polymers increasing process efficiency.

Polysulfide joint sealant – flexible sealant for bridge expansion joints

black polysulfide expansion joint sealant for bridges
Polysulfide joint sealant is usually black by color.

Synthetic rubber such as polysulfide is common as a sealant for bridge expansion joint systems due to its versatility. A polysulfide joint sealant is the right choice especially when no plastics are involved or when there is a possibility that the joint needs to be disassembled. Polysulfide is also suitable for bridge expansion joint repair projects, and projects that require an elastic joint sealant.

The solvent used in the sealants may attack plastics resulting in a system failure. When applied to substrates other than plastic, polysulfide expansion joint sealant systems provide excellent adhesion and flexibility allowing for movement associated with stress, vibration and temperature fluctuation.

Polysulfide benefits

  • Low temperature flexibility: as the name implies, polysulfide sealants have a high sulphur content. This grants the systems exceptional low temperature flexibility.
  • High impermeability: the high sulphur content also contributes to high impermeability which is a desired property as water and contamination should not seep into the joint.
  • Adhesive properties: of all the joint sealant options for bridges, polysulfide sealants have the best adhesive properties.

Epoxy polysulfide construction joint sealant

Epoxy expansion joint sealants are known for their extreme toughness, and they are very common as industrial and construction joint sealant solutions. The epoxy resins exist in many types and they are compatible with other ingredients. The type of epoxy joint sealant most commonly used for expansion joints in bridges contain polysulfide. The epoxy polysulfide sealants are more flexible than regular epoxies and tougher than regular polysulfide sealants.

Epoxy polysulfide benefits

  • Toughness: epoxy polysulfide sealants for expansion joints in bridges are tougher than the alternatives meaning that they are more resistant to abrasion and have better load bearing capacity.
  • Increased chemical resistance: epoxy alone is resistant to a wide range of chemicals, however, the addition of sulphur included in polysulfide broadens the range and even allows for full immersion of the sealant.

Which system is the best for your bridge expansion joints?

Choosing the sealants for expansion joints in bridges may seem like a simple process. However, this is not always the case. As some expansion joints may have specific requirements it is always good to check with a party specialized in joint sealing systems. The suitability of different sealants should be assessed based on the requirements set by the environment, materials, bridge type and expected traffic. Contact us for free assistance in choosing the perfect product and getting in touch with acknowledged expansion joint sealant manufacturers.

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water based mattress adhesives in assembly

Waterborne adhesive for mattresses allows for sustainable mattress manufacturing

Lately the demand for waterborne adhesive for mattresses has been increasing as the manufacturing processes shift towards greener practices and raw materials. Waterborne adhesives are replacing their solvent based alternatives, as they do not contain any solvents, and so have very low to zero VOC (volatile organic compound) content.

Benefits of waterborne adhesive for mattresses

Next to offering a more environmentally friendly bonding solution than solventborne systems, water based mattress adhesives come with other benefits, too. These include:

  • Fast application and curing: waterborne mattress adhesives are easy to handle and apply either by roller or spray. They are cured as the water evaporates either naturally or as a result of forced drying. Especially the water based spray adhesive systems can be used for automated mattress manufacturing.
  • Tough and flexible bonds: water based bonds are tough and retain their flexibility. In many cases the bond is stronger than the foam layers it bonds.
  • Safer working environment: as the water based adhesives for mattresses do not contain any solvents, no hazardous chemicals are released curing by evaporation.
  • User-friendly products: the absence of solvents also ensures that the cured bonds do not release any possibly harmful fumes in finished products.

Changes in mattress industry affect waterborne adhesives

When waterborne adhesives for mattresses first were introduced, they only stood for a greener option compared to solvent containing systems. Today, waterborne adhesives for mattresses are just as good and durable as their alternatives, maybe even more advanced. There are several factors that have encouraged the intense development of these systems.

mattress assembly adhesives layer by layer
Waterborne adhesive for mattresses meets the requirements of the newest materials.

The mattress industry is shifting towards online sales, which increases the demand for just in time manufactured and delivered products as well as convenient and fast packaging. Water based mattress adhesives allow for fast curing bonds which remain flexible to enable roll packaging shortly after assembly.

Also the range of materials used for mattresses is becoming broader. Nowadays, customers choose for comfort and they are aware of the options. Therefore, materials such as gels and memory foams have been introduced to the mattress industry. Traditionally, these materials would be difficult to glue, but the development of waterborne adhesive systems enables even the trickiest materials to be bonded.

Water based adhesive innovations for the mattress industry

The success of water based mattress adhesives has not always been self-evident. The traditional waterborne solutions were not as strong as the alternatives, they required a long time to cure and still there was a chance of mold in the packaging due to insufficient evaporation. Since then waterborne adhesive for mattresses has come a long way. Now they are considered the most important adhesives for foam bonding in mattresses, next to hot melt glues.

Below we introduce some recent innovations that make the waterborne mattress adhesives an even better choice. Get now more information on the innovations by contacting us.

1. Plug and spray portable equipment

Developed especially for low volume adhesive consumers or large production facilities in need of a remote spray station, plug and spray equipment only requires compressed air to realize industrial adhesive applications. These low investment systems bring flexibility to the mattress production and make it possible for everyone to create industrial quality bonds. Next to the mattress industry, these spray systems are also applicable for example in the furniture industry when bonding upholstery.

2. Zero overspray installations for water based spray adhesive

Waterborne adhesive for mattresses can be applied by roller or spray. The spray applications tend to result in only 35% to 50% of the water based spray adhesive ending up on the substrate. The rest is overspray. Fortunately, new spray systems have been developed to reduce the overspray and achieve even 100% transfer efficiency meaning that no adhesive is wasted and material costs are decreased.

3. High assembly tack adhesives

High assembly tack adhesives have been introduced to the market as an economical yet high performance rollable water based adhesive. High tack assembly adhesives require up to 50% less adhesive compared to other rollable adhesives. This can lead to remarkable savings in material costs compared with other mattress adhesives.

4. CR free adhesives

One of the challenges the mattress industry is facing is scarcity and increased price of CR, polychloroprene, which is an important binder used in many waterborne adhesive systems. CR free adhesive systems have been recently developed to guarantee affordable and durable adhesives. The features of CR free adhesives imitate those of conventional polychloroprene adhesives but they use another binder.

For a manufacturer it is easy to make the switch to a CR free water based adhesive. All it takes is cleaning the existing line or spraying equipment.

5. Forced curing for extra speed

Waterborne adhesives for mattresses are often considered problematic due to the long drying time they require. In order to overcome the issue, systems that are suitable for forced curing have been developed. These adhesives are easy to apply and suitable for automated mattress manufacturing. The assembly line must include an integrated forced curing step, where infrared is applied to the surface causing immediate evaporation of the water. Thanks to forced curing, water based mattress adhesives can be applied and cured in a matter of minutes. The mattress can be rolled, packed and prepared for transport immediately without risking fungus problems in the packaging. The procedure allows for just in time production and saves the manufacturer storing costs.

In need of water based mattress adhesives?

Water based mattress adhesives exist as many different formulations. Therefore, one should always consider the production process, assembly line and desired features of the finished products before choosing a system. We at adhesives+coatings are happy to help you out and bring you in touch with the industry’s leading adhesive manufacturers. All you need to do is contact us through the button below.

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hot melt adhesives for mattresses in assembly

Hot melt adhesives for mattresses enable non toxic bonding

Hot melt adhesives for mattresses are becoming increasingly popular, as they offer a non-toxic, environmentally-friendly solution for mattress bonding. These adhesives bond components together at the highest possible efficiency and at the lowest application costs. Different hot melt adhesive formulations are used for example for joining foam around springs, attaching cushioning foam and insulation to the mattress interior body and keeping upholstery fabrics and pillow top cushioning in place. All these applications are possible in an efficient manner with the lowest possible impact on the users and environment. All thanks to hot melt adhesives specially designed for mattresses.

Why choose for hot melt adhesives for mattresses

The reason for the popularity of hot melt adhesives for mattresses lays in the benefits the formulations provide. The most beneficial characteristics of hot melt adhesives for t he process and product include:

  • Non-toxic: hot melt adhesives are 100% solid. This means that they do not contain any solvents, nor do they release toxic fumes. Their VOC (volatile organic compound) value is close to zero and they are non-flammable. This increases product and process safety also in the mattress industry.
  • Fast curing: as the name implies, hot melt application uses heat to soften them to a liquid form. The adhesives cure as they cool down to room temperature allowing for quicker and easier assembly. Packaging is possible shortly after assembly.
  • Production automation: to increase the assembly line efficiency and production, hot melt adhesives for mattresses are suitable for automated application processes.
  • Easy to handle: in general, hot melt mattress adhesives are easy to handle. They come in a solid form, are fast and efficient to apply and, unlike water based systems, cure without evaporation. The use of hot melts increases the overall productivity.
  • Colorfast: as mattresses are consumer products, the aesthetics play an important role. Hot melts are colorfast, usually white and absolutely non-yellowing.
  • Strength: in many cases the fabric or foam which is bonded wears out earlier than the adhesive shows signs of deterioration.
  • Costs: hot melt adhesives are generally cheaper than other mattress adhesives. When working with hot melts, less product is needed to make the same bond. There is also little to no overspray.
  • Design freedom: hot melts adhere to a wide range of surfaces. This allows for using materials which usually would be difficult to glue. Materials such as memory foams and gels are no problem for mattress hot melts.

The down side of hot glue in mattresses

The only disadvantage of hot melt adhesive systems is that they may make a Velcro-like noise when the finished mattress is in use. This is due to faults in application: the bond is strong, but not uniform. Fortunately, new technologies allow for flawless application eliminating the problem of the mattress making noise. If the risk of noise is wished to be eliminated completely, other types of mattress adhesive could be considered.

Customized hot melt adhesive formulations with even more benefits

hot melt adhesives for mattresses in different layers
Hot melt adhesives for mattresses can be customized to fit the application perfectly.

The hot melt adhesive formulations are continuously developing to meet the ever-advancing needs of customers in the bed market. Improved comfort is required and achieved through additional layers of gels and foams which also need bonding to keep the assembly together.

Most hot melt adhesives are modifiable. So they can perfectly fit the needs of your mattress production process, assembly line and the finished product. The modification takes place by additional plasticizers, tackifiers and waxes. In case you are looking for a hot melt adhesive for mattresses or are curious for the options, do not hesitate to contact us for more information.

Important specifications for mattress bonding

Hot melt adhesives for mattresses exist as different types and formulations which all have their unique characteristics. When defining the one that benefits your product and processes the most, it is good to look at some specifications of the different products. The most important factors to look at include the following.

  • Melt viscosity (MV): melt viscosity measures the fluidity of the polymer in a certain temperature, usually at 190°C (375°F). The measure for MV is centipoise or cps. Very low viscosity allows for spray applications which are becoming the most common within the industry.
  • Ring and ball softening point (RBSP): the RBSP identifies the heat resistance of the hot melt adhesive. The indicates at which temperature the hot melt material is soft enough to work with. In the mattress industry one must make sure the softening point is low enough so that the foams and fabrics do not get damaged or catch fire.
  • Density: the density measure determines the hardness of the polymer. It also gives an indication to the strength of the cured bond.
  • Open time: open time indicates the time how long the adhesive sticks after the curing process has started. Hot melt adhesives for mattresses can have opening time from 10 seconds to 4 minutes.

4 methods to apply hot melt adhesive

Bonding in the mattress industry requires adhesives that allow for foam to foam, foam to textile, textile to textile and coil to textile bonding. As the assembly line involves many bonding processes and different materials, there are several ways to apply hot melt adhesives which can help optimize the production.

  1. Pattern and swirl spray: the spray applications increase the surface area of the adhesive, which speeds up the curing time and boosts the efficiency. Spraying hot melt adhesives is also an economical application method, since it requires less adhesive to achieve strong bonds, which saves the manufacturer money. Note that the initial investment of spray equipment is rather high.
  2. Beads: bead applications result in a robust bond which provides the adhesive with the strength to hold a stressed mattress coil in place. When applying hot melts using beads, one should keep in mind the threshold for how much adhesive can be put down using this method.
  3. Gravure lamination: gravure lamination is a method common especially in textile bonding. The textile is rolled through a laminating machine in order to apply the adhesive. When applying hot melt adhesives for mattresses, it is necessary to heat the roll before running the textile through the machine.
  4. Webs: hot melt web adhesives are used for foam to textile applications. This method involves a heated nip or press which aids bonding the adhesive to the substrates.

Looking for the perfect hot melt solution?

Hot melt mattress adhesives exist as different types and they can be applied through various methods. Therefore, it is not always an easy job to choose for the hot melt formulation that provides your assembly line, process and product with the most benefits. Might you need any assistance in finding the perfect product, feel free to contact us!

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hot melt as a solvent free adhesive

Solvent free adhesives grow in popularity

The growing interest and consciousness towards environmental responsibility is resulting in new technologies also in the adhesives industry. Solvent free adhesives are becoming more and more popular as they contribute to a greener future, user safety and reduced environmental impact.

But what is solvent free adhesive? For adhesives to be called solvent free, they must not contain more than 5% solvents. Therefore, several different technologies have been developed to reduce or eliminate the solvent content of the systems. The technologies include solvent free glue, hot melt and high solids adhesives as well as waterborne systems. All these systems are considered low VOC adhesives.

Ever increasing uses of solvent free adhesive solutions

First solvent free adhesives were a solution for low demand applications. However, as the technology is continuously improving, non solvent adhesives are becoming a desired solution in many industries. The industries that already rely on these low VOC adhesive solutions include the following.

solvent free adhesives and sealants for shoes drying
Solvent free adhesives are used in many industries including shoe making.
  • Automotive: interior fittings such as headlinings and dashboards
  • Packaging: especially lamination systems for flexible packaging
  • Furniture: bonding and sealing upholstery
  • Mattress: bonding mattress layers together
  • Paper: envelopes, bookbinding etc.
  • Textile and shoes: apparel and footwear, bonding upper to the sole
  • Hygiene: for example napkins, sanitary diapers and other non woven materials
  • Medical: solvent free adhesive pand-aids, surgical glues and cements for bones
  • Construction: non solvent based construction adhesive systems as multi purpose solutions

Non solvent adhesive systems beat solvent solutions

The main reason for choosing for solvent free adhesives is the reduced environmental impact they have. The nearly or completely solvent free adhesive systems are safer for the environment and for people due to the fact that they do not emit nor contain much VOC (volatile organic compound). These non solvent, low VOC adhesive systems have, nevertheless, more advantages than just that.

  • Lighter weight: bonding products that do not contain solvents tend to be lighter in weight both during the production and in finished products.
  • Fewer product requirements: many countries set high requirements for chemical products that are allowed to be imported, especially regarding VOC. As solvent free adhesives have close to zero VOC, export is also easier.
  • Fewer occupational safety requirements: in regards of occupational safety, non solvent adhesives have less requirements since processing them does not involve the possibility to inhale VOC emissions.
  • Reduced health risk: The absence of VOC means safer end products since no hazardous chemicals have been used in the no solvents adhesive systems.

Low VOC adhesive systems by different technologies

As solvent free adhesive systems are increasing in demand, there are several ways to realize them. The technologies resulting in non solvent adhesive solutions include hot melts, high solids, solventless and waterborne solutions which we will take a closer look at below.

Hot melt and high solid non solvent adhesive solutions

One of the newer non solven glue technologies is hot melt adhesive. Generally, hot melts are 100% solids formulations leaving no space for solvents – the perfect solution when one is looking for a water and solvent free adhesive. They are thermoplastics which appear in a solid phase in room temperature. However, when the temperature is elevated, they become liquid with a good flow. After application, it only takes seconds before the non solvent glue solutions are back to solid phase forming strong bonds and seals – all without the use of solvents.

The hot melt adhesives are traditionally applied by spraying due to their reaction to temperature. However, they can be made rollable by reducing the solid share (usually to about 75%) making them liquid also at room temperature. This, however, means that some solvent will be involved but as long as it does not exceed 5%, they still can be classified as non solvent adhesives. Hot melts also exist as biodegradable systems currently used in the packaging industry.

Do not hesitate to contact us in case you require any additional information on the hot melt adhesive technologies.

Solventless adhesives

Solventless adhesives traditionally do not contain any solvent and were first developed for the packaging industry, more specifically as lamination for flexible packaging. Solventless adhesives were first used for low demand applications only. Due to continuous development, they are now good for any lamination application, even when high temperatures or chemicals are involved.

These solvent free adhesives carry the benefit of lower machinery costs. Even though machinery made for solvent based products cannot be used for this non solvent glue, the initial investment of new machinery is remarkably lower.

Water based dispersions as solvent free glue

The most traditional no solvents adhesive solution is water based. These adhesives use water instead of solvent as the carrier agent. They cure through water evaporation. Despite the fact that these adhesives are very traditional, they still know several innovative applications, for example, solvent-free adhesive tapes.

Please find more information on waterborne adhesive and sealant solutions in our article dedicated to the topic.

Take a step towards greener future with solvent free adhesive solutions

An increasing number of organizations take their environmental responsibilities more seriously and aim at altering their production means to contribute to a greener future. If you are also looking for solvent free adhesives for your product, do not hesitate to contact us. Our specialists are happy to assist you in finding you the best possible solution.

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roll coating machinery adhesive application methods

Choosing adhesive application methods and equipment

As adhesives come in a wide variety and versatility, there are also numerous adhesive application methods and equipment to carry out the application. One application method is not better than the rest, but the choice of how to apply adhesive should be based on the adhesive types, the nature of the product, surface requirements, initial investment, maintenance costs and labor costs.

We distinguish between six main types of adhesive application methods which are described later on in this article, and can be realized with various adhesive application equipment. The methods include:

1. Dots and beads
2. Spray
3. Web coating

4. Brush and trowel
5. Curtain coating
6. Film application here

Adhesive beads & dots – most common of adhesive application methods

One of the most common adhesive application methods are beads and dots. Adhesive beads and dots are usually applied through different dispensing nozzles which allow for precise placing of the dot or bead. The simplest form of a glue dot applicator machine is a hand held squeeze bottle, however in industrial applications other, more advanced equipment is used.

There are several pieces of equipment that are used for creating precise and consistent beads and dots in certain patterns. These include handguns, automated pneumatic guns, automated electric guns and jetting. The advantage of applying adhesive beads and dots is that the equipment offers complete control over where the adhesive is applied as well as how much of the adhesive is used. However, purchasing the equipment may be rather expensive even though costs are reduced due to minimum adhesive loss.

Handgun – the basic adhesive equipment

Handguns exist as cartridge based and hose fed systems. The cartridge based handguns are handy as they are portable. They are an inexpensive option for field work, touch ups and low volume assembly. Nevertheless, they require expensive cartridges and frequent filling. The product quality is dependent on the skills of the adhesive applicator.

Hose fed handguns are common hot melt adhesive application equipment. They can be used for horizontal gluing on flat panels with nozzles that create dots or spiral patterns. Hose fed handguns offer more consistent output than cartridge guns.

Automated adhesive application with a pneumatic gun 

Pneumatic air driven guns are often used when automated adhesive application of dots or beads is desired. The automated glue application systems guarantee accurate timing, and they are not affected by adhesive viscosity or system pressure. Nowadays, the most innovative automated pneumatic gun application equipment is reliable and has a long service life, which reduces replacement costs. Most of this adhesive equipment can run at a speed of 3500 cycles per minute or more.

Automated electric gun

When better pattern control and consistency are required for high speed adhesive applications, an automated electric gun is a proper choice of equipment. They usually incorporate an all-electric driver which optimizes performance. As compressed air and dynamic seals are not used, automatic electric guns have lower costs and require minimum maintenance. Their service life is also generally longer than the one of pneumatic systems, which makes it one of the cheaper adhesive application methods.

Jetting with an industrial glue machine

Jetting is a non contact adhesive application method which is used only for applying dots and beads. In electronics assembly, jetting is a common application method since it allows for dispensing material in small spaces. In this adhesive applicator machine the jet moves above the substrate and uses a high speed mechanism to shoot precise and consistent dots, patterns or lines onto the substrate. This allows for extremely fast and accurate application of adhesives. Additionally, the jets require minimum cleaning and maintenance, which reduces costs.

Spray application of adhesives

Next to beads and dots, spraying is one of the most widely used adhesive application methods as it allows for applying a thin layer of almost any adhesive over a large surface in a short time. Spray application also enables adhesive application on uneven substrates. However, as the adhesives are atomized in the spray gun, much of it can be lost in the air (over spray), which requires additional safety measures and consideration of costs of lost adhesive. The over spray may also result in more extensive cleaning than when working with other adhesive application methods and equipment. Nonetheless, today´s innovative glue spray machine systems have reduced over spray – if you want to know more about zero over spray systems, contact us.

Air spray as adhesive application equipment

Low volume low pressure (LVLP) spray systems are suitable for applying consistent and thin layers of low viscosity adhesives. Typically, round or fan patterns of various diameters up to 165 mm can be applied. These adhesive application systems generally result in over spray yet they offer the possibility to adjust fluid flow, nozzle air and post air cutoff.

Airless spray – Reliable adhesive applications

Airless spray guns are ideal when maximum reliability is required in high production adhesive applications. These systems also allow for automation, controlled deposition and reduced over spray. Airless spray works the best when moderate viscosity adhesives are used. Air-actuated spray systems are preferred when precise application and high speed are desired.

Fiberized spray in 3 patterns

Fiberazion is the adhesive application method that forms an open net-like pattern that is a meltblown, swirl or random fiber. Fiberized spray provides accurate pattern control and minimizes over spray.

  1. Meltblown: meltblown nozzles allow for high speed production and continuous application. These are very suitable for wide web lamination and they improve the looks and hand-on personal hygiene products and result in excellent fine fiber adhesive coating in high speed tissue plybonding.
  2. Swirl: these nozzles increase bond strength and improve product quality in hot melt adhesive non wovens, laminating applications during product assembly. Usually adhesive fiber size, density and pattern width can be controlled. It is possible to make low density, large fiber patterns for best bond strength, open patterns for absorbency and high density, fine fiber patterns for heat sensitive substrates.
  3. Random fiber: there are also nozzles that are suitable for producing random hot melt adhesive coatings for continuous high speed lamination of roll based materials. Random fiber nozzles enable dense, uniform coverage with tight edge control and patterns. This can yield tolerance to process parameter changes, consistent bonding and improved product quality.

Web coating – an efficient adhesive application method

Web coating is a method where different adhesive application equipment can be used to create a web-like pattern of adhesive onto a wide variety of substrates. For most of the web coating equipment, it is crucial that the substrate is flat and even. The web coating adhesive applications can be automated, which increases the process speed.

Slot applicator – a precise adhesive application machine

On or off roll slot applicators are designed to deliver precise and continuous adhesive coatings. They provide accurate thickness control and include a system that prevents premature curing of the adhesive. Slot applicators operate at high speeds allowing for 4000 to 5000 cycles per minute.

Wheel and roll coating adhesive application systems

When applying adhesives by wheel or roll coating, several pattern options are available. The patterns can be customized to meet the production needs. This allows for applying adhesive from the top, bottom or side depending on the needs of the product and process. The only downside of wheel and roll coating is that the equipment will need time consuming cleaning if adhesive cures on it.

Dipping in a glue application machine

When low viscosity adhesives are desired to be applied in thick layers, dipping is a suitable method. As the name implies, the part is dipped into the adhesive. This enables adhesive application on parts with difficult shapes and hard to reach corners.

Transfer printing with the right adhesive application equipment

Transfer printing refers to a form of roll coating where a pattern pad is pressed against a pad or run across a roller to pick up adhesive. Then the pad is used to print the adhesive pattern onto a part or substrate. Most often rollers are used, however, flat plates are also suitable. Transfer printing is used for applying a very thin layer of adhesive in an accurate manner. Envelope flaps and windows can be given an adhesive layer through transfer printing.

Brush and trowel – the oldest of adhesive application methods

Using a brush or trowel to spread adhesive to a substrate is the very basic adhesive application method. The success of the application is dependent on the product quality, equipment quality, and most importantly, the skills of the operator. The advantage of brush and trowel applications is that it enables adhesive application also to uneven surfaces. However, the layer thickness and amount of adhesive applied are more difficult to control and may result in unexpected costs or adhesive system failure, in the worst case. One should also keep in mind that only a limited number of adhesives can be applied using brush or trowel.

Curtain coating for good coverage

Curtain coating refers to an adhesive adhesive application method which involves a so-called waterfall of adhesive – the curtain. The part is pressed through the curtain which results in a layer of adhesives sticking to the surface. The liquid that does not land on the part is collected and pumped back to the system to keep the waterfall running. The thickness of the adhesive layer is determined by the viscosity of the material and the speed at which the part passes through the curtain. Curtain coating is most suitable when a large area is wished to be covered in heavy adhesive.

The major advantage of curtain coating is that it results in a uniform adhesive layer and guarantees the same result for the parts to come. Furthermore, curtain coating is an automated process, which reduces labor costs and improves process efficiency. However, the equipment is generally more expensive than those required by other adhesive application methods. Also the limited number of suitable adhesives can be seen as a disadvantage.

Applying adhesives as a solid film

In recent years, applying adhesive as a solid film has become an extremely popular method. The adhesive is in the form of a thin film and it is deposited to the substrate using a special adhesive applicator machine. Most films use pressure sensitive adhesives, but also heat activated adhesive films are available. Generally adhesive films exist as two types: unsupported and supported film. The latter use a carrier sheet which is removed once one side of the film has been deposited to the surface. Adhesive films are especially popular in the packaging industry.

Which of the adhesive application methods is the best for your process?

Many factors affect the choice of adhesive application method. These include the type of adhesive, nature of product, substrate requirements and process design. Also financial factors play a role in the decision making process: how much does the equipment cost? Is frequent maintenance needed? What about cleaning? We have the answers to all these questions and more. Contact us in case you are looking for the best adhesive application method for your process and product.

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water based adhesive applied for food packaging

Water based adhesives for more sustainable bonding

The market share of water based adhesives is becoming ever greater since the development has taken a shift towards more and more sustainable solutions which support health and safety as well as reduce environmental impact. Waterborne adhesives are a great alternative for solvent based systems, as they do not contain any Volatile Organic Compounds (VOC), are lighter in weight and often require less product for forming durable bonds.

Being environmentally friendly and low VOC, water based adhesive systems are also user friendlier compared to alternative solutions. Applying waterborne adhesives does not require as many safety measures as systems that contain solvents, which can improve efficiency depending on the nature of the project. Additionally, the finished products that are bonded using aqueous adhesives are user friendly: water based adhesives do not bring along great health risk, nor do they release toxic or odorous fumes.

Types of water based adhesive systems

The trend in adhesives is strongly water based. In Europe and America water-based adhesives are preferred systems, whereas in markets such as China they only cover about 20% of the market. Waterborne glue systems can be roughly divided into two groups: emulsion and dispersion adhesives and solution adhesives.

Type 1: aqueous solution adhesives

Solution adhesives are the most traditional form of aqueous adhesive systems. They use water as the carrier substance and cure as the water evaporates. These waterborne adhesives are created using natural and synthetic polymers which dissolve in water. The uses of these water based glue systems include paper bonding and moistable glues such as those found in envelopes, stamps and labels.

Application methods: roller, spray and beads
Bonding: wet bonding
Examples: starch/dextrin adhesives for paper applications such as bookbinding, and protein/casein adhesives for food packaging industry.

Type 2: waterborne emulsions and dispersion adhesives

Water based adhesives are mainly used in food packaging lamination but gain more and more share in other applications, too.

The waterborne adhesive emulsions and dispersion systems are heterogenous mixtures which consist of dispersed liquid or solid polymer phase in an aqueous phase. These waterborne adhesives can be made by using a wide range of polymers including PVA (vinyl acetate polymers), PVAC (vinyl acetate copolymers) and acrylic as well as synthetic elastomers such as PUR (polyurethane).

As with other water based adhesives, also dispersion adhesives and emulsions can be cleaned with water. However, after the water based glue has dried, it is no longer water dispersible and cleaning residue may require use of solvents and detergents. More information on waterborne adhesives is available by contacting us.

Application methods: spray, brush, roller or beads.
Bonding: wet bonding or dry bonding (water based contact adhesive)
Examples: vinyl acetate adhesives for bonding paper, wood and cardboard, rubber latex waterborne adhesives for fabric and wood. Polyacrylate emulsions as water based construction adhesives, laminating adhesives, pressure sensitive waterborne adhesives, and waterborne polyurethane adhesive as dispersions and emulsions for packaging and shoe making industries.

Waterborne adhesive bonding in 2 ways

Another way to categorize water based adhesives is by the manner in which they form bonds. The two groups are wet bonding and dry bonding (water based contact adhesives).

1. Wet bonding waterborne adhesives

Wet bonding water-based adhesives are those that cure through evaporation, and include both dispersion and emulsion systems, and waterborne solution adhesives which are predominantly wet bonding. In this bonding process the waterborne adhesive is applied either to one adherent or both of them. The adherents meet each other while the adhesive is not dry, hence the name wet bonding. As curing takes place as a result of evaporation, it is extremely important that at least one of the adherents is porous, absorbing the water, and allowing it to leave the waterborne adhesive system faster. If none of the adherents is porous, curing and hardening may take a long time. Wet bonding aqueous adhesive systems are used mainly in the paper and packaging laminating processes as well as furniture and mattress industries.

2. Water based contact adhesives

Contact adhesives, also known as dry bonding waterborne adhesives, are predominantly emulsions and dispersion adhesives. Similar to solvent based dispersions, the water based adhesives are applied to both adherents, hence the substrates that require bonding, and the water is allowed to evaporate before the bond between the adherents is formed. When the parts coated with the water based glue come into contact with each other, the bonding takes place.

Water based contact adhesives are used more widely than the wet bonding systems since they are generally stronger, allow for greater variety of substrates and have better heat resistance. In these waterborne adhesive mixtures, ingredients can be added to enhance and create properties including fire resistance, chemical resistance and anti static properties.

Personalized advice – best waterborne adhesives

Moving towards more sustainable products is a trend that has reached the adhesives market. Water based adhesives not only are environmentally friendly but also contribute to the safety of finished products and possibly improve process efficiency. In case you are curious about waterborne adhesives for your production, contact us and let our experts guide you through the sustainable, greener possibilities.

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particleboard made stronger with reinforcement and anchoring adhesive

New anchoring adhesive makes sustainable furniture

Many industries strive for sustainable, green solutions and reduced carbon footprint: furniture making is no exception. Therefore, the use of lighter and greener materials such as different wood based panels is ever increasing. However, the panels often have rather low density, which can make them weak. Fortunately, a new, one-of-a-kind reinforcement adhesive has been invented to solve the problem and make the lighter materials used in furniture making stronger. Reinforcing wood panels with the new anchoring adhesive brings along many benefits and opens unique opportunities to the industry as a whole.

Next to being the groundbreaking solutions for material weakness, the new anchoring adhesive for wood panel reinforcements is fast, strong and light: all properties that benefit the furniture making process and finished products.

4 ways to reinforce wood based panels with anchoring adhesive

As wood based panels tend to be rather light and have relatively low density, they may also be considered weak. The lowest density panels such as particle board can be reinforced as a whole but also higher density boards such as MDF and plywood can benefit from anchoring adhesive as local reinforcement which often carried out to enable fastener applications. All the furniture that is made of wood based panels such as closets, kitchen fittings, cupboards and shelves can benefit from this revolutionary reinforcement adhesive.

There are four ways the new anchoring adhesive can be applied when reinforcing wood based panels.

anchor made with reinforcement adhesive in pur foam
The reinforcement and anchoring adhesive can be used to make anchors for fasteners in porous materials.
  1. Anchor for fastening points: the anchor adhesive can be injected into low density fiberboard or other wood panels locally, in order to create an adhesive anchor for fasteners. The adhesive flows into the material, penetrating it and curing in a matter of seconds. The fasteners can be placed immediately after applying the anchoring adhesive.
  2. Compaction of panel edges: also the edges of the particle board panels can be treated with this anchoring adhesive in order to increase profile machining and improve material resistance.
  3. In situ casting: casting of inner geometry can be done for positioning and fastening purposes.
  4. Reinforcement of complete panels: some wood based panels such as OSB (oriented strand board) are made using an adhesive to keep the wood particles together. This new anchoring adhesive can replace the originally used adhesive and result in a significantly lighter panel.

Note that this adhesive is new to the market and is likely to be suitable for many more applications also outside the furniture making industry: for example reinforcing honeycomb panels used in doors is possible. The anchoring adhesive can also be modified in terms of elasticity, adhesion profile and final strength. Do not hesitate to contact us if you think the properties of this adhesive suit your process and product!

New anchor adhesive brings long term benefits for furniture industry

As the furniture industry is shifting towards increased use of particle board, reinforcing the low density material becomes more and more important. Not only does the new and innovative anchoring adhesive make the board stronger, but it also provides long term advantages for the production.

  • No adhesive waste: as the anchoring adhesive is applied by injecting it into the wood based panel, there is no adhesive waste. All the adhesive purchased, is also used.
  • Proven application methods: the anchor adhesive can be applied automatically or manually. The injection applications are carried out using technology with a proven track record: even though the adhesive is new, the application technique is not. The application can be integrated into industrial, continuous processes in order to improve overall efficiency.
  • Increased efficiency: thanks to the extremely fast curing of the adhesive, 2-4 seconds when injected, and the immediate readiness for drilling and milling, the cycle times can be kept short and the production efficiency is improved.
  • Smaller carbon footprint: the reinforcement adhesive not only makes wood based panels stronger, but also allows for use of even lower density fiberboard: the reduction in chipboard density is possible up to 400 kg/m3. This leads to reduced use of wood, which reduces the environmental impact as well as enables lower material costs.
  • Cheaper furniture: thanks to the reinforcement anchor adhesive, it is possible to reduce the costs of manufacturing wooden furniture. Due to the lighter weight, transportation costs also decrease. These together allow the furniture to be sold at lower price.
  • Lower weight of furniture: next to reduced transportation costs, the reduced weight also makes it easier and safer to move around the furniture.
  • Product quality and design possibilities: the use of this anchoring adhesive in low density fiberboard and other wood based panels increases product quality and extends lifespan as the material is made stronger in terms of higher pull out forces, and its moisture resistance is improved. Additionally, the reinforcement adhesive applications allow for greater design freedom and leave room for innovation.

The unique formulation of the new, revolutionary reinforcement and anchoring adhesive brings along several advantages which encourage the use of the adhesive also for other purposes than reinforcement and in other industries than furniture making such as automotive vehicle assembly and aerospace. Are you convinced this adhesive is what your process and products need? Contact us for more information and get connected with a supplier!

Take your furniture production to the next level with new reinforcement adhesive

The new, revolutionary reinforcement and anchoring adhesive system clearly aids the production of sustainable wooden furniture. In case you are interested in discovering the possibilities, contact us! Our experts are eager to introduce you to the supplier in our network.

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polyurea adhesives used as an alternative to polyurethane

Polyurea adhesive challenges traditional bonding systems in vehicle assembly

In vehicle assembly, fast curing structural adhesive systems are crucial as they increase the production speed and efficiency of the process as well as providing the finished vehicles with several benefits. Lately, the automotive industry has been shaken by the entry of a new, revolutionary system – polyurea adhesive – which is likely to become a wanted alternative to polyurethane and other structural adhesives, which vehicle assembly lines currently rely on. The new polyurea adhesive is elastic and cures extremely fast in room temperature, contributes to significant vehicle weight reduction and remarkably increases overall efficiency while reducing operational costs.

What makes polyurea adhesive unique and even more appealing to the automotive industry is its elasticity and ability to bond dissimilar materials, including lightweight composites as well as its suitability for manual and fully automated application depending on the available equipment and the type of adhesive formulation.

Vehicle assembly applications for polyurea adhesive

Although polyurea adhesive is something new and revolutionary, polyurea chemistry has been known for longer in the form of fast curing coatings. Now, that the chemistry has been modified to serve as fast curing structural adhesives, polyurea has got many new applications. In vehicle assembly these include for example the following.

sandwich material reinforced with new fast curing structural adhesive
The new polyurea adhesive is suitable for securing fasteners.
  • Structural bonding of fasteners on molds
    The fast curing polyurea adhesive allows for applying fasteners to thin walled components. This enables maximum design freedom and eliminates the chance for material distortion.
  • Bonding lightweight components
    Local reinforcement and bonding of lightweight materials is possible with the new adhesive as it can be automatically injected into the materials, strengthening them and allowing for fasteners to be attached, increasing their shock absorption ability and contributing to weight and cost optimization.
  • Local reinforcement of PU foam
    For reinforcement purposes, the fast curing structural adhesive can be injected into porous materials such as PU foam. The foam absorbs the polyurea glue which cures within 2-4 seconds. This casting process eliminates the need for hard parts before the foaming process. The adhesive is also suitable for fiberboard reinforcement in furniture making.

In reality, the range of possible applications is much wider, as the polyurea adhesive can be applied through manual and automatic equipment or even injection. Contact us for more information about the possibilities!

Benefits that make polyurea adhesive an alternative to polyurethane

The polyurea and polyurethane share some benefits such as curing in challenging environments, suitability to numerous materials, watertight nature, wide operating temperature range and stress absorption and vibration damping. However, some of these properties are enhanced in the new polyurea structural adhesive, and a range of other benefits is brought along.

foam injected with polyurea adhesive
Not only is the fast curing structural adhesive an alternative polyurethane but also allows for new applications such as reinforcing foam by injection.
  • Fast curing: one of the most important advantages of polyurea adhesive is its ability to cure in no more than 2 seconds. This shortens cycle times and reduces costs.
  • Lower energy consumption: as the adhesive is able to cure at room temperature in a matter of seconds, no additional heat source is needed, which reduces the energy consumption of the process.
  • One adhesive for many applications and methods: the polyurea adhesive is versatile as it can be a part of fully automated application machinery or applied manually using a cartridge. Also injection is possible.
  • Durability and comfort of vehicles: the elasticity of the fast curing structural adhesive guarantees durable bonds which are not affected by stress and vibration. The adhesive even damps noise and vibration.
  • Heat resistance: contributing to longevity and a broad range of application possibilities, polyurea is resistant to extreme temperatures: the operating temperature range is between -40°C and 200°C, the maximum exceeding the temperature given for polyurethane.
  • Supports the use of lightweight materials: as polyurea adhesive bonds dissimilar materials including different composites, and strengthens weak materials a wider range of lightweight materials and their applications can be introduced to vehicle assembly.
  • Reduced costs: the new adhesive reduces costs in different ways; material costs are lower as less adhesive is needed to guarantee strong bonds: compared to polyurethane, the amount of adhesive needed can be reduced by up to 50%. Labor costs are reduced, too, since the polyurea based adhesive cures fast and allows for automation. Finally, increased efficiency and shorter cycle times decrease the production costs per vehicle.
  • Modification: even though the adhesive is based on a specific chemistry, it is not just one type of adhesive, but it can be modified in terms of elasticity, adhesion profile and final strength.

Curious about the details of this fast curing structural adhesive?

In case this new, revolutionary fast curing structural adhesive has made you curious about the opportunities it could offer your processes, do not hesitate to contact us. We are happy to provide you with more information about polyurea adhesives, connect any enquiries with the supplier as well as discuss training and implementation support.

Get connected with the polyurea adhesive manufacturer by hitting the button below!

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body panel adhesive in a blue car

Body panel adhesive for vehicle repairs and assembly

The development of adhesive technology allows for use of ever-smarter body panel adhesive solutions in vehicle assembly and repairs. The auto body panel adhesive systems are used throughout the transport and vehicles sector, the automotive industry being the largest user of this adhesive. The automotive panel adhesive, however, does not differ from the body panel glue applied to other vehicles in public transportation (trains and buses), road transport (trucks, ambulances, etc.) as well as heavy construction and agricultural machinery. The use of panel bond adhesive solutions remarkably speeds up assembly lines and allows for fast repairs especially there, where welded bonds are not possible or not desired. Transport vehicle and automotive body panel adhesive systems also replace conventional mechanical fasteners, and bring along multiple benefits.

The range of auto body panel adhesive systems is rather broad meaning that there are plenty of adhesives that meet the strict requirements set for the industry. They can also be tailored to fit the needs of specific vehicles and assembly lines possibly resulting in reduced waste and minimum use of the automotive body adhesive without compromising on the bond quality.

 Benefits of using auto body panel adhesive

The use of body panel adhesive systems is increasing in both vehicle production and repairs. In both types of applications they bring along many advantages, which encourages the shift from mechanical fasteners and welds towards auto body panel glue.

Assembly line adhesive makes vehicles lighter, faster and stronger

The assembly line adhesive systems are known for the following advantages:

  • Lightweight: auto body panel adhesive systems are generally lighter than welds and mechanical fasteners: they can remarkably reduce the weight of a vehicle, which results in reduced fuel consumption and emissions. For example, in buses, the use of adhesives can result in weight reduction of 80 kg.
  • Anti-corrosive: welded bonds and fasteners tend to rust at some point of vehicles´ lifespan. Automotive body panel adhesive solutions, like other glues, are not corrosive. In some cases they can even prevent corrosion functioning as a barrier between metal panels. Body panel adhesives contribute to increased durability of vehicles.
  • Noise and vibration cancelling: automotive body adhesives effectively cancel vibration and noise caused by engines and uneven road surfaces. Due to the flexible nature of these car body adhesives, they are not affected by vibration unlike mechanical fasteners which loosen or break more easily. This is beneficial especially in public transport vehicles such as trains.
  • Bonding dissimilar materials: the fact that body panel glue systems bond dissimilar materials, makes automotive panel adhesive the most used as the use of composite materials has been significantly increasing. Also other vehicles benefit from the ability to bond metals to composite materials.
  • Efficiency: cost and time efficiency are strongly associated with automotive body adhesive. For vehicle assembly, car body adhesives are cheaper than fasteners as a material, and regarding application process. The application of body panel adhesives can be fully automated saving time and money.

Get to know more advantages and possible solutions for your assembly line by contacting us.

Car body glue enables tricky repairs

Also in vehicle repairs, automotive body panel adhesive systems have proven to be beneficial. The following benefits come along with body adhesives in repair applications:

  • Speedy repairs: body panel glues are common in workshops as they allow for fast repairs. They can be applied more quickly than mechanical fasteners, and do not require specially trained personnel for application unlike welding. Due to this construction machinery and road transport vehicles can return to service faster.
  • Repairing hard to reach areas: sometimes welding or fasteners are not an option due to the tricky location of the spot that requires repairing. That is where automotive body panel adhesive systems come into picture: depending on the application method, special glues can reach almost any spot that needs to be repaired.
  • Repairs between dissimilar materials: another reason for welding not being an option is dissimilarity of materials. In vehicle manufacturing more and more composite materials are used, meaning that repairs of these materials has also become more frequent. Car panel adhesive systems are a suitable option regardless of the material combination.

Automotive panel adhesive applications in vehicle assembly

In vehicle assembly, car body glue is used to reduce the weight of the vehicles, give them increased protection from corrosion and speed up the production process. They are suitable for applications like body skins, roof skins and quarter panels. The most common applications of body panel glue in assembly include:

  • Weatherstrip bonding: waterstripping is the way to protect vehicle interiors from the environment. The body panel adhesives used for weatherstripping must remain flexible also after curing to be able to withstand the vibration of the vehicle. They also must retain their properties in extreme temperatures and temperature fluctuation.
  • Watershield bonding: Watershield is the film bonded directly to the vehicle´s door protecting electrical components from damage by water and moisture. Automotive body panel adhesives for watershield bonding exist as pre-applied and direct applied systems.
hot melt body panel adhesive protecting electronics in a vehicle door

Body panel adhesive is used for example for watershield which protects the electronics from water damage.

Curious for more? Send us a message to find out more beneficial panel bond adhesive systems on a wide variety of vehicles.

Car body panel glue technologies

The aforementioned applications can be carried out using several adhesive technologies. These can roughly be divided into solvent based, waterborne and hot melt adhesives. The most suitable auto body panel glue is determined by the assembly line and the product.

  • Hot melt: 100% solid, environmentally friendly solutions applied using heat. These do not contain any solvents and result in minimum waste, and so are ideal automotive body panel adhesive systems.
  • Waterborne: ever-developing liquid adhesives that do not contain any toxic solvents. Car body glue which is safe and fast to work with.
  • Solvent based: liquid auto panel adhesives, generally considered stronger than their water based alternatives but have higher VOC values requiring safety measures to be taken.

Materials used in car body panel glues include for example MMA, polyurethane and its alternatives, rubber silicone and MS polymers. The hot melt panel bond adhesive systems are usually butyl-based or hot melt pressure sensitive adhesives (HMPSA).

Looking for an assembly line adhesive or car body panel adhesive for repairs?

Automotive body panel adhesives clearly come with many benefits, but which one is the right one for your assembly line? If in doubt or curious for more information, do not hesitate to contact us. Our experts are determined to help you find the right adhesive system for your processes and products.

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modified silane adhesives and sealant bein applied on window

Elasticity with silyl modified polymer adhesive and sealant systems

Silyl modified polymer adhesive and sealant solutions were first introduced in Japan in the late 80s. Today, there is a high demand for elastic bonding and sealing in industrial applications. These silane modified polymer-based systems have successfully entered the European and American markets. They are widely used in industries such as automotive, transportation, construction and many more.

Adhesives and sealants that rely on silane modified polymer combine the advantages of polyurethanes and silicones, and cancel all their disadvantages. Silane modified polymers can be applied to almost any surface, making modified silanes a perfect choice.

What is silane modified polymer?

MS polymer being applied in concrete crack
Silan modified adhesive and sealant systems with a polyether backbone are also called MS polymers and are mostly used in sealing applications.

Silane modified polymer (SMP), also known as silyl terminated polymer or silyl modified polymer, consists of a polymer backbone which is terminated by silane groups. The silane groups can be independent or supported by urethane groups. This gives us two main types of SMP adhesive and sealant systems: silyl modified polyethers (MS polymers) and silyl modified polyurethanes (SPUR polymers). The former are often preferred as sealants as they are more elastic and slightly less resistant than SPUR polymers. Both types of silane modified polymers are, however, also suitable for silyl modified polymer adhesive solutions.

Curing process of silane modified polymer adhesives and sealants

Modified silane polymer systems cure through polycondensation, also known as moisture curing, in room temperature. This means that the products use moisture in either the material or in the ambient to harden. With some products the curing starts from the outside and reaches the inside as last. Therefore, one must be careful not to apply too thick layers, as this may lead to poor curing and system failure.

Advantages of silyl modified polymer adhesive and sealant systems

Modified silane adhesives and sealants are the preferred option for many applications in a wide variety of industries. They are used for example for:

  • fixing solar panels
  • bonding side panels of trailers and vehicles such as trucks
  • assembly parts
  • container constructions
  • doors and windows (also in vehicles)
  • in sealing joints wherever elasticity is needed, for example in parking lots.

It is no wonder SMP adhesive and sealant systems are widely used, since they come with a great spectrum of advantages.

Advantages of silane modified polymers:

  • Elastic bonds and seams: SMP adhesive and sealant systems remain flexible also after complete cure. The elasticity of the seams and bonds is not affected even by harsh environments.
  • Easy to modify: silane modified polymer adhesives and sealants can have different polymer backbones which partially define their set of properties. However, the properties can also be modified with help of additives and so-called boosters.
  • Minimum surface preparation: in most cases through cleaning and degreasing of the surface is sufficient. Usually, these systems do not require a primer, thus the process is sped up. Note that some silyl modified sealant systems do not cure in the presence of polyols: therefore, the cleaning substance should not contain these.
  • Silicone and isocyanate free: most silane modified polymer solutions are environmentally friendly as they do not contain silicone or isocyanates. Some products may emit methanol during the hardening process, but also ethanol emitting, safer systems exist.
  • Good adhesion to most materials: silyl modified polymer adhesive and sealant products adhere to most substrates such as concrete, plastic and metal allowing for a wider variety of possible applications.

Adhesives and sealants based on silane modified polymer

Due to the fact that the modified silane systems are easy to further modify, they exist as adhesives and sealants. The MSP adhesives have excellent adhesion to many substrates whereas the sealants provide watertight and chemical resistant seals.

Silyl modified polymer adhesive systems

Silyl modified polymer adhesive systems are various and versatile. As the formulations are many, so are the application possibilities. For example POR adhesives, based on silane modified polyolefin, are rather common in the automotive industry, where they are used instead of polyurethane adhesives.

Silyl modified polymer sealant systems

The silyl modified polymer sealant systems are known for their extreme elasticity and abrasion resistance. Although these sealants are not extraordinarily chemical resistant, they are strong and economical sealing solutions for example for airports. Especially the sealants´ ability to adhere to different substrates makes them a go-to solution in many cases. 

Silane modified polymer vs. silicone

When it comes to silane modified polymer sealants, they are most often compared with silicone sealants. The main difference between the two is that silyl modified polymer sealant does not contain silicone which is sometimes considered harmful. The MSP sealants are also paintable unlike silicone.

Looking for the perfect SMP adhesive or sealant for your project?

In case you are curious about what modified silane polymers can do to your project or product, or you would like to enquire about a silyl modified adhesive or sealant, do not hesitate to contact us. Our experts make sure your application gets the SMP system it deserves. Note that the silane modified polymers market is under continuous development and the systems are generally easy to modify. Therefore, manufacturers within the silane modified polymers industry usually are willing to collaborate with their customers to enable more uses of SMP systems.

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silicone sealants applied on glass

Industrial silicone sealant suits many applications

ndustrial silicone sealant systems are the most widely used solutions in many sealing applications. They are easy to process and apply, as well as come with multiple other benefits. Additionally, they are versatile and cure into tough, rubber-like, watertight seals. The applications vary from marine work and general construction to engine gasketing in the automotive industry and industrial maintenance applications.

Silicone sealants are generally resistant to chemicals, moisture and weathering, making them suitable for indoor and outdoor applications. But what is the best silicone sealant? That depends on the specific needs of the project. Here you will find the different types of silicone sealant. Note that it is possible to modify silicone sealants to match the needs of a specific application.

Benefits of industrial silicone sealant systems

Next to being resistant to weathering, moisture and some chemicals, silicone sealants can have other properties which benefit specific applications. Generally, industrial silicone sealant systems have the following properties.

aquarium with silicone sealants
When a watertight solution is needed, industrial silicone sealant is a considerable option.
  • Watertightness: the most important benefit of silicone sealants is that they are a 100% watertight. Therefore, they are ideal for sealing aluminum roofing and creating water seals between glass and aluminum.
  • Flexibility: industrial silicone sealant systems are very flexible, and they remain flexible even after curing. Low temperature silicone sealants retain their flexibility even in lower temperatures.
  • Good adhesion to dissimilar materials: like many industrial sealants, also silicone sealants have exceptionally strong adhesion. However, industrial silicone is also suitable for sealing joints between dissimilar materials.
  • Heat resistance: general purpose silicone sealants are somewhat heat resistant – more than moist comparable systems. However, when continuous exposure to high temperatures is involved, it is good to opt for a heat resistant silicone sealant. These can withstand up to 315ºC (600ºF).
  • Electric protection and insulation: when electric and electronic materials such as silver, brass and copper need sealing, an industrial silicone sealant can be a good option. As long as one chooses for a silicone which protects seals and insulates them from electric discharge.
  • Resistance to microorganisms: silicones are watertight and common as sealing solutions in humid environments such as industrial kitchens. In hummus areas, a basic silicone sealant is prone to fungus forming. Therefore, for these applications the best silicone sealant is a system which resists mold and mildew as well as other harmful microorganisms.
  • Chemical resistance: silicone sealant is generally resistant to some chemicals. It is also possible to make special chemical resistant silicone sealants that resist a range of specified chemicals and acids.

The 2 types: acetoxy and neutral silicone sealant

Most of the industrial silicone sealant systems are ambient curing, meaning that they harden in room temperature. The process can take up to 24 hours depending on the product and the thickness of the seal.

Even though silicone sealant may seem like a simple product, it exists in two different types: acetoxy (or acetic) and neutral silicone sealant systems. For any enquiries regarding silicones sealants, contact us for the best possible solution tailored for your application

1. Neutral curing silicone sealant

A neutral curing silicone sealant cures through evaporation of alcohol or another non-acidic substance. These systems are ideal when there is a need for an odorless silicone sealant. 

The neutral silicone sealant is an ideal choice especially for sensitive surfaces such as stone and bitumen. These silicone sealants are generally more expensive than acetic silicones, but they do provide better adhesion and watertightness than the alternative solutions. Therefore, they are the preferred industrial silicone sealant types also for outdoor applications.

2. Acetic silicone sealant

Acetoxy or acetic silicone sealant cures in room temperature releasing acetic acid. The acetic acid is what causes the strong, vinegar-like smell, these sealants are often recognized for.

Acetoxy silicone sealant is the less expensive and faster curing alternative to neutral silicone sealants making them the most common type of industrial silicone sealants. However, one must consider the substrate when working with acetoxy silicones, since the acid in them may bring harm to sensitive materials. For example, when applied on bitumen substrates, bleeding may occur. On natural stone, silicone may cause discoloration, and on some metals the risk of corrosion increases. Acetic silicone sealant is, nonetheless, the go to solution for industrial applications unless a neutral cure silicone is necessary.

What is the best silicone sealant? – Types of silicone sealant

Industrial silicone sealant systems can be roughly divided into two groups: acetic silicone and neutral curing silicone sealant. Additionally, modifications of the formulas are possible in order to guarantee the system all necessary properties. 

Next to the two types of silicone sealant, the industrial systems can be divided into types by their properties. The most common industrial silicone sealants include the following.

  • Chemical resistant silicone sealant: industrial silicone is chemical resistant to a certain extent by nature. However, there are also systems that are designed for environments where chemical exposure is likely. These chemical resistant silicone sealant systems are common for example in industrial maintenance applications. Chemical resistant sealants are also common in silos and tanks
  • Acid resistant silicone sealant: a sub-group of chemical resistant sealants, acid resistant silicone sealants resist a specific set of acidic chemicals. 
  • Odorless silicone sealant: usually neutral curing silicones, the odorless systems are safe to use and preferred in many interior applications as well as on delicate substrates. 
  • Low temperature silicone sealant: silicone is not usually very cold resistant. Nevertheless, special low temperature silicone sealants exist, and they are often preferred due to their ability to retain flexibility even in low temperatures.
  • Antimicrobial silicone sealant: fungus, mold and mildew are common problems with silicone, mainly because the sealants are a preferred solution in humid areas. 

The best silicone sealant is the one that meets all the requirements set for the sealant. Choosing the sealant should be based on an assessment of the environment, application method and the finished product.

Find the best sealing solution for your project

Looking for an industrial silicone sealant for your project? Do not hesitate to contact us for more information, advice on products or quotes for solutions. Our experts are happy to help you find the best possible solution for sealing your project.

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thoughts of sustainable adhesives

The need for Sustainable Adhesives for greener future

While the world’s growing population and increasing living standards boost the need for adhesives, environmental concerns encourage the development of greener, sustainable adhesives. Therefore, the need for sustainable adhesives has reached a completely new level. Innovative sustainable glue solutions are being developed based on ever-improving technologies. Additionally, more and more industries opt for sustainable adhesive products, which is no wonder as sustainability of adhesives is a hot topic for many reasons.

  • Improved health and safety throughout the product’s lifecycle: sustainable adhesives contain little to no solvents. This means that less or no VOC (volatile organic compounds) are released during the application and curing. Neither do the finished product release VOC.
  • Decreased environmental impact and carbon footprint: the absence of solvents results in less impact on the environment. This is due to lighter weight, less product needed and VOC emissions reduced to the minimum.
  • Rules and regulations towards more sustainable products: sustainability has become a priority in development of new products and systems. Therefore, also governments strive towards the trend by setting rules and regulations for products. For example, the VOC emissions of chemical products have long been strictly controlled in the USA and EU. They also gain more and more importance in other markets such as Asia and South America.

Are adhesives sustainable?

Yes and no: many adhesives use fuel based raw materials which are harmful for the environment. However, it is possible to replace those raw materials completely or partially with materials derived from natural resources. The use of natural raw materials defines the sustainability of adhesives.

Innovation leads the development of sustainable adhesives

Sustainability of adhesives has many advantages, but achieving them requires modification of existing products and inventing new innovative technologies. Sustainable adhesives generally belong to one of three groups:

  • Solventless adhesives: nowadays many adhesives are made with less solvents by increasing the solid share. However, among other methods, 100% solid adhesives such as hot melt contain no solvents at all. Hot melts are common throughout industries including the automotive sector.
  • Waterborne adhesives: waterborne adhesives are developed using water as the carrier substance instead of a solvent. This provides the product with reduced weight as well as eliminating the VOC emissions as well as minimizing the risk for fire during processing. Waterborne adhesives are common for example in the mattress industry, where they replace solvent based systems.
  • Biobased adhesives: to call a glue biobased, most of the materials in it must be natural such as starch, vegetable oil, resins, lignins and proteins. These materials guarantee reduced carbon footprint of the products.

The demand for so called green adhesives is ever-growing and encourages new ways of sustainability in adhesives development. Below you can find five types of sustainable adhesives that are likely to experience a boost in demand in the coming years. For any enquiries for sustainable adhesives, we encourage you to contact us, share your project´s needs and let us help you find the manufacturer to produce the system.

1. Renewable adhesives

Renewable adhesives refer to those made of materials such as beeswax and plants, and have no petroleum derivatives in their formulations. Not only do these sustainable adhesives reduce carbon footprint but also contribute to overall sustainability of a great number of applications including paper lamination, carton sealing and bottle labeling.

2. Recyclable adhesives

When an adhesive is recyclable, once the finished product has come to the end of its service life, the adhesive can be melted and recollected without producing any adhesive waste or residue. Recyclable adhesives are generally common in the automotive industry as well as in bonding glass, aluminum and steel.

3. Biodegradable sustainable glue

Biodegradable technology brings the sustainability of adhesives to the next level. The biodegradable adhesives are designed to be broken down by bacteria and other microorganisms. The degrading process produces water, carbon dioxide and other natural gases defined by the environment. These adhesives are mainly present in paper and packaging, envelopes, hygiene products and medical devices.

4. Compostable green adhesives

Compostable adhesives belong to the group of biodegradable sustainable glue. The main difference is that the compostable systems break down under specific (compost) conditions. These sustainable adhesives break down in industrial or domestic compost environments and the broken-down product is suitable for enriching soil. Compostability is currently present in packaging adhesives such as hot melts and PSA adhesives.

5. Repulpable adhesives

In paper and packaging, repulpable adhesives are likely to grow in popularity as they dissolve completely during paper repulping process. Used for instance in carbon boxes, envelopes and other paper products, repulpable adhesives are by far the most sustainable glue options. They completely dissolve without leaving any residue behind.

Choose for the right green adhesive systems

Sustainability of adhesives is of great importance regardless of the project or product. In case you need any assistance regarding sustainable adhesives, do not hesitate to contact us. Our experts are here to help, and happy to provide you with the best possible sustainable glue system for your needs.

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industrila sealants being applied

Durable seals with industrial sealants

A sealant is a chemical product which creates a mechanical seal. The main purpose of both DIY and industrial sealants is to fill gaps, cracks, joints and other openings that otherwise might cause seepage of liquids, gas or other unwanted matter. When two or more parts are joined together, gaps are inevitable. Also damage and deterioration may lead to cracks that require filling in order to guarantee durability. This is where industrial sealant solutions come into picture creating strong and watertight seals.

Note that sealants are no alternative to adhesives even though some sealants, such as epoxies and specially formulated polymers, have adhesive properties. Also special sealant adhesives exist.

Why industrial seal systems

Industrial sealants and adhesives are generally considered stronger than the systems intended for consumer use. Even though this may be true, it is good to keep in mind that the industrial seal solutions also involve working with more aggressive chemicals and may require broader knowledge of working with chemicals in order to guarantee optimal results. Therefore, a DIYer may sometimes achieve better results with less strong, consumer products. However, when looking for sealing systems for industry, marine and industrial sealants are a must.

Sometimes industrial sealants and adhesives can be used together to create the best solutions. An adhesive bond can be sealed afterwards to protect the bond and guarantee longevity.

Choosing industrial sealants based on curing process

Generally industrial sealants are present throughout industries from automotive and infrastructure to electronics and aerospace. There are many different types of industrial seals. One of the ways to divide them into categories is looking at the sealant curing processes.

Curing is the process which hardens the sealant to its final shape and strength.Some industrial sealants cure in a few minutes whereas others may require weeks to be completely hardened.

The main types of curing are as listed below:

  • Evaporation: the  industrial seal solutions that cure in room temperature through evaporation are either water or solvent based. The sealant reaches its final cure when the moisture has left the system.
  • Thermal curing: thermal curing sealants do not reach their final strength and toughness before they can harden under high heat specified for each product. Thermal cure sealants exist as thermosets which do not soften in high temperatures, and thermoplastics which can be reshaped when heated again.
  • UV/Radiation: some sealants cure under exposure to UV light or electron beam instead of heat. The UV and EB curing sealants have shorter curing time than thermally cured sealants and the curing demands less energy consumption. 
  • Anaerobic curing: the anaerobic curing sealants cure in the absence of oxygen. They are common in joining metal parts exposing them to metal ions. 
  • Moisture curing:  the moisture curing sealants are applied to the joint and left untouched to allow them to cure at room temperature using the moisture in the air or material to cure. The curing time varies from 30 minutes to 4 hours depending on the product, the thickness of the seal and the ambient humidity.

The 5 main types of industrial sealants

Currently, there are more than 40 different types of industrial sealants available. However, the list of the most used sealants is much shorter: here we will introduce the 5 most common industrial sealants looking into their properties and uses throughout industries. You can receive more information on these or any other type of industrial sealants by contacting us.

1. Polymer based sealant solutions

Description: polymer based sealants are a group of products including polyester, polyamide, polysulfide, vinyl and polyurethane sealants. They are most commonly cured in ambient temperature but allow for other curing methods such as thermal and anaerobic curing.

Properties: polymer sealants form permanently flexible seals, which makes them ideal for joints that experience movement.

Industrial uses: polymer sealants are the most common in locations requiring expansion joints such as airport runways. Brickwork and bridge joints also use polymer seals, and polymer glazing can be used for capping glazing purposes.

2. Phenolic industrial seal solutions

Description: phenolic sealants are usually realized as a combination of phenol and formaldehyde. These sealants not only seal joints but also provide effective bonding. Phenolic sealant is also the only type of sealant that exists as powder, liquid and films.

Properties: phenolic sealants are especially famous for their resistance to high temperatures and temperature fluctuation. They also have adhesive properties.

Industrial uses: phenolic sealants are suitable for applications involving sealing and bonding plywood, constructing buildings and in appliance industry.

3. Epoxy sealants for industry

Description: when extreme strength and toughness is sought for, epoxy sealant is the solution. Epoxy sealants are usually supplies as two component systems consisting of a resin and a hardener, just like epoxy adhesives. They are mixed together prior to application at a rate set specifically for each product. Epoxy sealants cure in room temperature, but sometimes need additional heat to harden completely.

Properties: epoxies are the most famous for their extreme strength and toughness. They also make up one of the few sealants that have exceptional adhesive properties.

Industrial uses: due to their strength epoxies are common across industries including automotive, marine and aviation. They also provide exceptional electrical insulation making them perfect for electronics.

4.  Acrylic industrial sealants

Description: acrylic sealants exist from acrylic acid via catalytic reaction. These sealants are curable through various methods. When thermally cured, the curing time is the lowest.

Properties: acrylic sealants have good bonding properties and they eliminate all kinds of infiltration by foreign particles. Additionally, they are paintable, odorless and flexible. Acrylic sealant is also an option for outdoor applications since it is resistant to the elements. Note that acrylics are prone to chemical damage and should not be applied where chemical exposure is likely.

Industrial uses: the most common applications of acrylic sealant includes sealing doors and window frames. They are also common in many domestic applications.

5. Silicone based sealants

Description: silicone based sealants are the most common industrial sealants as they are versatile, strong and affordable. They have a life expectancy of 10-20 years. Silicone based sealants exist in two types: neutral cure and acetoxy.

Properties: silicone based sealing solutions are strong and watertight. Thanks to modification, they can also have special properties such as heat and chemical resistance.

Industrial uses: the range of industrial uses of silicone sealing systems is broad. They are suitable for example for glazing as a structural sealant and sealing electric sockets.

Material compatibility of sealants in industrial applications

When choosing an industrial sealant, one of the most important things to consider is the product´s compatibility with the planned substrate. To enlighten the possibilities we have created a list of the most common substrates and the sealant types compatible with them.

  • Concrete: one of the most common construction materials, concrete, can be sealed with polymer sealants.
  • Metal: silicone and polymer sealants usually provide the best results for metal joints. Silicone works especially well on aluminum, iron and steel.
  • Porous materials: sealants with high viscosity or gelly structure work the best on porous surfaces. Silicone, polymers and epoxy are common on porous materials.
  • Textiles: phenolic and silicone based sealants work the best on textile.
  • Plastics: silicone and polymer sealants perform the best on plastic surfaces depending on the composition of the plastic.
  • Ceramics: epoxy silicone and acrylic sealants bring the best results on non-metallic ceramic surfaces.

More information about industrial sealing solutions

Do you need assistance in choosing the right industrial durable sealant, or have you chosen one and would like to find the best product? Contact us and let our experts help you find the best industrial sealants for your applications.

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biobased adhesives and sealants from sustainable resources

Biobased adhesives and sealants respond to the needs of the market

Due to growing world population and increasing living standards, the need for adhesives is greater than ever. At the same time environmental concerns and decreasing fossil resources discourage the use of fossil based materials. This has led to the development of biobased adhesives and sealants which work towards reduced carbon footprint while efficiently bonding different substrates.

Instead of relying on traditional fossil-based raw materials, bio adhesives and sealants consist of renewable, biobased materials such as starch, vegetable oils, proteins, lignin and natural resins. Not only are biobased adhesives and sealants environmentally friendly, but they also have beneficial mechanical and chemical properties that contribute to their efficiency.

Materials that make up bio based adhesives and sealants

The raw materials used in biobased adhesives and sealants are derived from biomass which is mostly produced by the agricultural and silvicultural processes. Consequently, these materials are climate-neutral and the finished bio based adhesives and sealants do not affect the environment. See the biobased materials that can replace petroleum based polymers, tackifiers and waxes in the table below.

Biobased material typeIngredients in biobased adhesives and sealants
PolymersSoy protein
Starch esters
Tackifiers Pine rosin
Dimerized fatty acids
Possible ingredients of biobased adhesives and sealants

Different types of biobased adhesives and sealants

The term bio-based adhesives and sealants generally refers to systems that consist of biobased materials up to a certain point. The first biobased adhesive and sealant systems were general purpose, waterborne solutions that benefitted industries like packaging, furniture and textile. However, as the technology has advanced, there are now specific adhesive and sealant systems for specific industries. Currently, the packaging industry benefits the most from bio based adhesives and sealants.

The bio based adhesive and sealant systems are no longer limited to waterborne dispersions and emulsions, but they also exist as hot melt systems and pressure sensitive adhesive solutions.

From biobased to biodegradability and compostability

When biobased adhesives and sealants contain enough natural raw materials, they can be classified as biodegradable or compostable. These two terms are often used as synonyms, nonetheless, they are not exactly the same: the main difference is that biodegradable products break down naturally whereas compostable systems require a certain setting in order to break down.

Compostable or biodegradable bio based adhesive and sealant systems exist for example as heat seals and general packaging adhesives.

European Norms EN 16785 and EN 13432 assess bio-based adhesives and sealants

When biobased adhesives and sealants first were introduced, there were neither internationally acknowledged standards nor testing for biobased materials. In order to make it easier to define biobased materials and products that use them, several standards exist nowadays. The most important ones are the European Standards EN 16785-1 and EN 13432.

eco friendly sticker biobased adhesives
Eco-friendliness of biobased adhesives & sealants is assessed by European Norms.
  • EN 16785-1 verifies biobased content of products in two ways: by radiocarbon analysis and elemental analysis according to CEN/TS 16440 for Carbon- 14 component. The standard EN 16785-1 defines biobased as “derived from biomass”. The biobased adhesives and sealants are thus those partially or entirely made of materials derived from biomass. The standard covers a broad range of products since it is applicable to solid, liquid and gaseous compositions which contain carbon.
  • EN 13432 evaluates biodegradability of adhesives and sealants by four tests: biodegradation, disintegration, ecotoxicity and heavy metals. An adhesive or sealants is biodegradable if 90% of the total mass of the adhesive is turns to CO2 within 180 days, the germination rate and plant biomass in the compost are more than 90% of those in the corresponding blank compost, the products resulting from composting process are suitable for enriching soil or do not harm floral growth in the area, and the heavy metals in the product do not exceed the limits set in the standard.

Certified bio based adhesives and sealants benefit manufacturers and buyers

Obtaining a biobased certificate helps manufacturers demonstrate the biobased content of their products on the labels. This increases the trustworthiness of the products and company in general.

As for the buyer, it is good to look for products that have biobased certification according to EN 16785 or another similar standard to be sure of the contents of the product.

Interested in bio-based adhesives and sealants?

Biobased adhesives and sealants are gaining more and more share on various markets ranging from wood and construction to paper and packaging. In case you would like to receive more information on biobased products, or like to enquire about a suitable biobased solutions for your process, do not hesitate to contact us.

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packaging line with low temperature hot melt adhesive aka cool melt

Low temperature hot melt glue bonds and seals delicate materials

In the packaging industry in particular, delicate materials such as paper, wrap around cases, carton and cardboard require bonding in a fast paced environment. Ideally, these applications use hot melt adhesives, however, the application process tends to involve high temperatures possibly damaging the delicate materials and resulting in high energy consumption. Fortunately, it is possible to opt for a low temperature hot melt glue which helps overcome those issues.

Low temperature hot melt glue gets its name from the fact that it allows application in lower temperatures than regular hot melts. These adhesive systems are usually based on synthetic resins. The systems exist as for instance EVA (ethylene vinyl acetate) copolymers, polyolefins and other polymers.

Low temperature hot melt glue improves cost efficiency

Usually the main reason for choosing for low temperature hot melt glue systems is their cost efficiency. Using these adhesives reduces costs in three ways:

  1. Energy consumption: as lower temperatures are required, the energy consumption decreases, which results in a smaller electricity bill.
  2. Operational costs: the absence of extremely high temperatures reduce the wear and tear of the machinery, which calls for less frequent maintenance reducing operational costs.
  3. Material costs: low temperature hot melt adhesive systems are generally cheaper to purchase than traditional hot melts. However, this should not be taken for granted: there are always exceptions.

The financial benefits of low temperature adhesives mainly derive from the fact that the hot melt adhesive application process does not require high heat. Whereas a regular hot melt commonly requires at least 150°C, low temperature hot melt adhesive applications are possible from 90°C on.

Benefits of low temperature hot melts in packaging

The low application temperature of these hot melt adhesives brings along several benefits which support the cost efficiency. These include:

  • Bonding and sealing delicate materials: the packaging industry involves many different types of materials that need bonding and sealing; some of these are temperature sensitive. In those cases, a low temperature hot melt adhesive can be used to make sure no harm is done to the delicate materials. For example, it i s wise to glue cardboard with hot melt adhesive that does not require high heat.
  • Increased machinery service life: as extremely high temperatures are not involved in the low temperature hot melt glue application process, the machinery is likely to deteriorate more slowly. This also reduces the need for frequent maintenance.
  • Better operator safety: even though 90°C is still a high temperature, applying low temperature adhesives involves a much smaller risk for operators to get injured by burns. The low temperature also ensures that the adhesive releases less odor during the application.
  • Higher performance of packaging lines: low temperature hot melt glue is generally easy to apply and cures fast. This combined with the minimized maintenance intervals results in improved overall performance of the packaging line.
  • Lower energy consumption: since the adhesive application does not require as high a temperature as regular hot melts, the energy consumption can be significantly reduced. This results in greater sustainability and contributes to reducing carbon footprint.

Technical benefits of the glue

The low temperature adhesive systems additionally have other benefits which are dependent on the formula of a specific glue system. Such benefits common for low temperature hot melt glues include:

two stripes of low temperature hot melt adhesive on cardboard
Low temperature hot melt glue adheres well to porous surfaces.
  • Excellent adhesion
  • Good hot tack
  • Resistance to temperature extremes
  • Fast curing
  • Thermostability
  • No charring
  • Good pot life stability
  • Adhesion to porous surfaces

Contact us for more information on customized low temperature adhesive systems and find the perfect match for your application.

Specifications of low temperature hot melt adhesives

Low temperature hot melt adhesives exist as different types: EVA hot melts, polyolefin based systems and many more formulations, even pressure sensitive. These all have their specific uses. Some are designed for delicate surfaces such as paper, foam and fabric whereas others work well on cardboard and carton. Find the right type of low temperature adhesive by contacting us.

The most common applications of low temperature hot melt glue in the packaging industry include gluing cartons and folding boxes as well as sealing and bonding wraparound cases, cardboard boxes and trays. For each application and material, it is crucial to consider the specifications of the adhesive.

gluing folding boxes wit low temperature hot melt adhesive
Low temperature adhesives are suitable for folding boxes, wrap around cases and other forms of packaging.

Some of the most important specifications to look at are:

  • Application temperature window: generally low temperature hot melt glue can be applied at temperatures between 90° and 140°C. Temperatures above 160°C should be avoided.
  • Recommended application temperature: each adhesive system also has a recommended application temperature which is a smaller range than the temperature window. Usually the recommended application temperature lies between 90° and 130°C, but it varies per product.
  • Softening point: the point where the hot melt adhesive starts to soften is usually greater than 60°C.
  • Application method: many low temperature adhesives are applicable using a roller or nozzle. These can be part of manual, semi-automatic or automatic application equipment depending on the product.

FDA approved hot melts

When choosing an adhesive for packaging, it is also important to look at certification and standards. As low temperature hot melt adhesives are crucial for many packaging lines, and food packaging covers a great share of the industry, FDA approval is one of the most important certificates. Fortunately, many of these low temperature hot melt glue systems have FDA approval, meaning that they are safe to use on food packaging. To avoid any inconvenience, always check with the manufacturer to what extent the adhesive is food safe.

Note: as the trend in food packaging leans towards green solutions, also biodegradable hot melt systems are available.

Find a low temperature hot melt packaging adhesive supplier

If you are looking for a low temperature hot melt adhesive for packaging, contact us and let our experts connect you with a supplier. Our network consists of adhesive industry professionals with proven track record of successful bonding. To get connected, click on the button below and share your adhesive needs with us.

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airport with sealant on runway

Airport joint sealant systems in a crucial position

The loading and unloading areas, runways, aprons and washing areas of airports are subject to high traffic, heavy loads and nearly uninterrupted use. Therefore, it is paramount that the airport floors made of concrete and/or asphalt fields are treated accordingly with airport joint sealants that make the joints between the fields impermeable. Poorly sealed joints are likely to cause problems over time including:

  • Sagging of the fields, also known as corrosion that can be caused by climate, chemicals or abrasion
  • Soil contamination due to chemicals that can access the ground through poorly sealed joints
  • Safety hazard on runways during landing and take-off

Fortunately, there are several airport joint sealant systems that are suitable for concrete or asphalt from runways to washing areas. The most common airport sealants include MS polymer and polysulfide systems.

Minimum requirements of airport joint sealants

It goes without saying that airport joint sealants should be as durable as possible and protect the concrete and asphalt fields as well as the underlying soil from any damage for as long as possible. Regardless of whether one is looking for an airport runway sealant or opting for a sealant for washing areas, the system should have at least the following characteristics:

airport joint sealants have made floor impermeable
Airport joint sealants must be impermeable and resistant to chemicals to prevent damage of the fields and protect the soil.
  • Impermeability: the ability to not let through any water, microorganisms or chemicals such as de-icing substances or fuels is crucial in every outside area of an airport. Impermeable joints prevent corrosion of the concrete and asphalt fields as well as protect the soil from contamination.
  • Resistance: depending on the environment and specific application the airport joint sealants should be resistant to chemicals and microorganisms that could possibly harm the seals.
  • Flexibility: as the sealants are applied to joints and trench drains, flexibility is of high importance. The sealant is not to break when the fields experience movement as a result of temperature fluctuation or any other reason.
  • Abrasion resistance: due to the continuous traffic by heavy vehicles, abrasion resistance is a must. Furthermore, airport runway sealants, in particular, require additional impact resistance to endure the frequent landing of planes small and big.

Next to the technical requirements, airport joint sealants should also meet some economical needs. These include maximum durability with minimum maintenance and fast application and rapid curing. Minimum downtime is often desired because the less time the application and curing take, the sooner the area can be opened for use.

Types of sealants that are used at airports

When it comes to the types of joint sealants for runways and other areas at airports, there are many options of which two are the most common. These are polysulfide and MS polymer.

These sealant systems exist as combinations of different products including primers, sealers, crack fillers and tacky sealants. Some of these products are self leveling making the application even easier and less time consuming.

Polysulfide systems – chemical resistant runway sealants

Of the two most common airport joint sealants, polysulfide based systems are the most resistant to chemicals. These sealants make airport areas impermeable to fuels, oils and de-icing agents reducing the risk for foreign object damage.

When high polysulfide content (~30%) is combined with an epoxy sealant, the result is an extremely hard wearing and chemical resistant system which is ideal for example as a runway sealant. Polysulfide sealants are also suitable for other areas of airports since modifying the formula to suit different applications is possible.

MS polymer sealants – flexibility and abrasion resistance

Modified silane polyether systems, better known as MS polymer sealants are not as chemical resistant as polysulfide based systems but they do come with multiple other benefits. MS polymer airport sealants are known for their extreme flexibility and abrasion resistance. The chemical resistance also reaches a sufficient level and effectively holds back fuels, water and microorganisms.

MS polymer sealants also have the advantage that they adhere extremely well to different substrates. Therefore, they can also be used when joints between asphalt and concrete fields need to be sealed. They also cure faster than for instance polyurethane sealants.

Compared to polysulfide based systems, MS polymers are also more user and environmentally friendly since they do not contain any solvents, isocyanates or silicone.

Find the right airport joint sealants for your projectt

MS polymer, polysulfide or another airport joint sealant? If you are looking for a specific sealant or need advice on airport joint sealants, contact us. Our experts are happy to assist you with extensive projects, local repairs and completely new airports. We will make sure your enquiry ends up with the best possible sealant manufacturer.

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black high peel strength adhesive spray

Vehicle industry benefits from high peel strength adhesive

For some time now, the automotive and transport industries have been adopting more and more adhesive technologies in order to realize vehicles that meet today´s requirements. One of the newer inventions introduces a new approach to acrylic structural adhesives: this high peel strength adhesive has also high elongation, low odor and it is prone to minimum shrinkage.

This high peel strength adhesive with exceptional elongation is based on acrylic adhesive technology, however, it takes the chemistry further and creates a unique combination of properties. This set of properties is especially appealing to vehicle manufacturing from cars and buses to trains and trucks as it supports the use of lightweight materials such as plastic and composite but is also applicable on metals.

High peel strength adhesive based on methyl methacrylate – but better

high peel strength adhesive applied in automotive industry
The high peel strength adhesive is based on MMA chemistry, but takes it step further by adding a unique set of properties.

The high peel strength adhesive uses similar technology to that of methyl methacrylate adhesives (MMA). Nevertheless, it takes the chemistry a step further and offers a unique set of properties. Compared to regular acrylic structural adhesives, the innovative adhesive has optimized open and curing time which enable greater production efficiency.

This adhesive also beats the regular MMA in peel strength and elongation. Even though peel resistance of adhesives is nothing new, it becomes exciting when it is combined with high elongation. A pair of characteristics that is rarely found in one adhesive.

Long term benefits with acrylic structural adhesive

Next to the couple of advantages over regular methyl methacrylate, the high peel strength adhesive comes with more benefits which can positively influence the production on the long run.

  • Lightweight vehicles: the acrylic high peel strength adhesive allows for lightweight vehicle production as it is lighter than fasteners and welds, and bonds lightweight materials such as aluminum, (thermo)plastics and different composite materials. The adhesive can also replace welded bonds between metals.
  • User friendliness: this adhesive is use friendly in many areas: it can be applied after minimum surface preparation and without a primer, unlike other MMA´s it has very low odor and it also changes color to indicate the stage of cure.
    Increased efficiency: rather fast curing (8 to 11 minutes) together with the optimized working time and curing time ratio this adhesive can be applied keeping the cycle times short which leads to higher efficiency than what could be achieved with other acrylic adhesives.
  • Versatile application possibilities: the adhesive is suitable for both manual and automated applications. As the focus has been laid on the rheology of each component, a manual gun can be used. On the other hand the optimized open and curing times allow for process automation.
  • Unique technical properties for specific applications: the combination of exceptional peel resistance (14 N/mm) and high elongation (about 90%) alone make the adhesive unique. However, it has other characteristics which make it suitable for specified applications: extremely low shrinkage, sag resistance and not boiling when filling large gaps make the high peel strength adhesive ideal for large composite substrates.
  • Product quality: this acrylic adhesive also has an impact on the quality of the vehicles: due to its flexibility it absorbs shocks and damps vibration, which increases comfort of the finished products. Next to that, the adhesive also contributes to the aesthetic aspects of quality: it has a very low read through, which means that it is a desired solution for visible applications especially in the automotive industry.

Need high peel strength adhesive?

Acrylic adhesives are very common in the transport and automotive industries and the range of available solutions can be frustratingly broad. Whether you are looking for a regular MMA solution or a more specific system such as high peel strength adhesive, do not hesitate to contact us. Our experts are happy to help you find the adhesive your products and process deserve. Hit the button below and get in touch!

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polyurethane adhesives being applied to car glazing

Polyurethane adhesives and sealants among the most used systems

Polyurethane (PUR) systems are among the most used adhesives, sealants and adhesive sealants due to their unique properties and the possibility to give them other characteristics through modification. The PUR systems are best known for the elasticity of seams and bonds they create. However, polyurethanes also exist as tougher rigid formulations which are more common as adhesives only.

One of the greatest reasons for the popularity of polyurethane adhesives and sealants is the fact that they adhere to almost any surface regardless its porosity. Polyurethane sealants and glues are also applicable in challenging environments and tricky locations.

Advantages of PUR adhesive and sealant systems

Polyurethane adhesives and sealants exist as single and multicomponent systems which can be elastic or rigid depending on the formulation. Note that the rigid systems are excellent PUR adhesive systems, whereas elastic systems are common polyurethane sealants and glues as well as PU adhesive sealant systems.

The benefits

  • Curing in challenging environments: polyurethane adhesives and sealants are either heat or moisture curing. Ambient humidity can be very high as the system only cures faster in the presence of moisture. Generally the systems also cure even if the ambient temperature fluctuates or shifts towards extremes. This varies per product.
  • Suitable for numerous materials: polyurethane bonds and seals porous and nonporous materials including metals, wood, concrete, most plastics, rubber, epoxy, leather, paper, glass and many more. PUR adhesives and sealants are also suitable for bonding dissimilar materials. Note that most polyurethanes do not adhere well to polypropylene, polyethylene, silicone or surfaces coated with fluoropolymers like Teflon.
  • Waterproof: polyurethane sealants and glues are generally waterproof, however, the water resistance varies per formulation. Most systems resist water enough to cause no problems in exterior construction applications. Nonetheless, polyurethane adhesives and sealants are not recommended for full immersion underwater.
  • Wide operating temperature range: as PUR adhesives are extremely weatherproof, they are also suitable for a wide range of operating temperatures. Polyurethane glue is a considerable option when the temperature is between -40°C and 100°C.
  • Environmentally friendly: polyurethane offers sometimes a more eco-friendly alternative: for example timber lamination is possible with PUR adhesives instead of formaldehyde containing systems. PUR adhesives and sealants are generally solvent-free and have zero to very low VOC. Also food safe polyurethane sealants and adhesives exist.
  • Stress absorption and vibration damping: especially the elastic polyurethane adhesives and sealants absorb stresses and damp vibration and noise. Therefore, they are common in vehicles, for example in transport vehicle glazing and cabins of agricultural machinery. Here also PU adhesive sealant systems are common.
  • Paintability: to increase aesthetic appeal or protect seams and bonds from factors like UV radiation, PUR adhesives and sealants are paintable. Acrylic paints are the most suitable for the job.

Considerations regarding PUR adhesive and sealant systems

Even though polyurethanes have many benefits that often make them the preferred choice, they are not flawless. Some factors that must be considered when working with polyuretahne sealants and adhesives are as follows.

  • Strength: polyurethane forms strong joints yet they are not comparable to those formed by epoxy adhesives and sealants. Especially when bonding metal to metal, epoxy is likely to deliver stronger results.
  • Contains isocyanates: isocyanate groups are a crucial part of polyurethane formulation. However, they are toxic and require additional safety measures during processing. Nevertheless, once the polyurethane reaches its final strength, isocyanate is not a hazard.
  • Short pot life/ skin formation time: working with polyurethane adhesives and sealants requires speed as the curing process starts quickly. When working with 2K polyurethane adhesives or sealants, the pot life must be kept in mind as the reaction starts as soon as the components are mixed. On the other hand, the skin formation of 1K products can also start fast.
  • Long curing times: even though PUR adhesives and sealants exist as fast curing systems, there are also solutions that require up to 48 hours to reach final cure. However, these adhesives can also be beneficial, and they are suitable for example for the book binding industry. The advantages (moisture, cold and heat resistance, fast setting, low melting point etc.) are greater than the long time it takes to reach for final cure.

Types of polyurethane adhesives

The two most common adhesive types are epoxy and polyurethane. The latter is more flexible when it comes to modifying the bonding systems. Polyurethane adhesive exists as one and two component systems which can be either elastic or rigid depending on the composition. The single component polyurethanes are generally easier to work with as they do not require mixing prior to application. On the other hand, 2K polyurethane adhesive systems tend to be stronger and have more desired physical properties.

Single component moisture curing polyurethane adhesive

polyurethane adhesives applied in construction
Single component moisture curing polyurethane adhesives are common as general purpose glues in interiors and exteriors.

Moisture curing polyurethane adhesives are predominantly single component systems which require moisture in order to set. Prior to application, these adhesives are sticky, and they cure into a bond which remains elastic. Therefore, these polyurethane adhesive glue systems are often used for applications such as glazing and construction.

When working with moisture curing polyurethane adhesives, it is important to consider the skin formation time of the adhesive. As soon as the PUR adhesive comes into contact with the moisture in the air, a skin starts forming. The skin formation time is the time one has to work the glue.

Single component heat curing PUR adhesive

The other type of one component polyurethane glue cures when heat from external source is applied. This type of adhesive forms rigid bonds and is generally stronger than its moisture curing alternative. However, it is not as strong the 2K rigid PUR adhesive, which is why the 1K systems are often applicable in simple assembly applications.

Rigid heat curing polyurethane glues can be processed faster than moisture curing adhesives as the speed of curing process can be controlled with heat. With rigid adhesives, thick layers should be avoided as the curing starts from the outside. The thicker the layer, the greater the chance of incomplete cure in the inside.

2K polyurethane adhesive systems

Two component polyurethane adhesives can be either rigid or elastic depending on the chemical composition. The elastic 2K polyurethane glues are thermoplastics meaning that heating allows for reworking them. The rigid adhesives, for their part, are thermosets, which means that once cured, reworking is not possible.

Multicomponent polyurethane adhesive systems allow for easier modification than the single component alternatives. Therefore, they can have more physical properties and are suitable for use throughout industries in applications varying from printed wiring boards to vehicle glazing and interior trim. Contact us for more information on the possibilities with 2K polyurethane adhesive.

Tip: if you are looking for an adhesive with the characteristics of polyurethane but require faster curing, lighter weight and stronger bonds, you might want to take a look at alternative adhesive systems which have chemistry very close to the one in PUR adhesives.

About polyurethane sealants

Also, when it comes to sealants, polyurethane is the most common choice next to silicone. The two types of sealants are both flexible allowing for up to 50% movement and they keep water and air out. However, they also have differences: polyurethane sealant is organic and silicone is inorganic.

Due to their organic nature, polyurethane sealants tend to be less durable than silicone. They often have a life span of 5 to 10 years whereas silicone can reach the double. However, this can also be seen in the price: polyurethane sealant is usually about a half the price of silicone. If you are looking for a product that has the beneficial properties of both silicone and polyurethane sealants, take a look at silane modified polymer products.

Note that if you wish to replace a silicone seam with polyurethane sealant, or vice versa, make sure to remove all of the sealant before applying another one. If the sealant is not properly removed, the new sealant is likely to adhere poorly.

Looking for polyurethane sealants or adhesives?

As polyurethane glues and sealants can be modified rather easily, they are sometimes found in surprising applications. Therefore, in case you are looking for a suitable sealant or adhesive for your project or product, considering polyurethane might be worth your while. For more information on the possible applications, hit the button below and contact us. Our experts are determined to find the best bonding and sealing solutions for each application.

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a wooden house being built using low carbon adhesives for construction

Carbon neutral buildings with low carbon adhesives for construction

In recent years, carbon neutral and low carbon buildings have caught more and more attention. The common trend is shifting towards environmentally friendly solutions, lower carbon dioxide emissions and generally greener buildings. Carbon dioxide emissions are part of every phase of a building’s lifespan: manufacturing raw materials, construction, use and demolition. Next to the use phase manufacturing accounts for the largest environmental impact. This is where low carbon adhesives for construction come into the picture. To reduce a building’s carbon footprint, low carbon adhesives are applicable on construction timber, windows, door areas and many other applications.

The carbon footprint of construction adhesives

The construction adhesives exist in four groups: water-based dispersions, hot melt thermoplastics, solvent based glues and reaction adhesives. The amount of adhesives used in constructions is rather small compared to most other building materials. However, the carbon footprint of the adhesives contributes to the overall footprint of the building.

Of these four, reaction adhesives have the most negative environmental impact, whereas water-based dispersions have the smallest carbon footprint. Thermoplastic hot melts are often considered a green option, and solvent based glues are thought to have negative impact on the environment. However, surprisingly they share the same size of carbon footprint. Naturally, the actual environmental impact of adhesives is dependent on the product´s formulation and composition. This means that not every solvent based glue has low impact, and that reactive adhesives can also have lower impact.

Eco-friendly buildings with other low carbon materials

Sometimes achieving the smallest carbon footprint requires the use of less environmentally friendly adhesives combined with bio-based building materials. These materials include wood and innovative materials derived from it. In these cases the carbon content of the adhesive is not important as long as the bonds hold without replacing or maintenance for as long as possible.

Different applications of low carbon construction adhesives

an open window with low carbon adhesives for construction
Low carbon adhesives for construction are common as sealing and bonding solutions for windows.

Low carbon adhesives for construction are usually water based dispersions, or at least solvent free. They know numerous compositions and formulations, each having a design for a specific application.

Some of the uses of low carbon adhesives for construction include bonding and sealing windows, making stairs as well as laying wall and floor tiles. However, glues also play a role of paramount importance in providing strong and carbon neutral structures, especially in wooden buildings. Timber constructions have been proven to be as strong as concrete and steel but lighter in weight, lower in cost and carbon neutral. Adhesives are suitable for laminating timber enabling beams that are sufficiently strong to be for use in bearing structures.

More information on low carbon glues

As carbon neutral buildings become more and more desired, low carbon adhesives for construction are growing in popularity. In case you wish to gain more information on low carbon possibilities, or are looking for a supplier for your project, click the button below and share your project with us. Our experts are happy to help you find the right adhesive system for your project or product.

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testing intumescent sealant in an oven with flames

Intumescent sealant for passive fire protection

Flames and smoke can spread through the smallest of gaps causing extreme damage to buildings and even human lives. Applying an intumescent sealant to linear joints, around pipes and between cables to close all the gaps and add fire resistance.

An intumescent seal slows down the burning process and does not contribute to spread of flames. Therefore, it can minimize the damage by protecting structures, giving fire fighters more time to arrive and take the fire under control as well as fireproofing escape routes allowing for efficient evacuation.

How does intumescent sealant work?

Intumescent seals are known as means of passive fire protection, but what is an intumescent sealant in practice? Also known as expansion sealant, intumescent sealant expands when it becomes exposed to extreme heat and can swell up to 40 times its original volume. The sealant increases in volume but decreases in density forming a char layer. The expanded sealant does not actually catch fire, but the char burns eventually, still much more slowly than most building materials.

Depending on the product formulation, application and backing material, an intumescent sealant can be resistant to fire for up to 240 minutes. Buildings require different levels of fire resistance depending on their size and whether they have a residential purpose.

The difference between intumescent mastic and sealant

When looking for a fire retardant sealant, one inevitably encounters the term intumescent mastic. But what is an intumescent mastic and should you opt for one instead of a sealant? In principle, a sealant is any substance used to seal a surface or to fill and seal gaps and voids. A mastic, for its part, can be a cementitious adhesive, sealant or filler which is waterproof and remains flexible. Thus, the choice between intumescent mastic and sealant should be made based on the needs of the application.

Both, intumescent mastic and sealant, can result in the same level of fire resistance. Fire resistance is not determined solely by the sealant or mastic, but also the backing and the materials that require an intumescent seal.

Common applications that require an intumescent seal

In a building, many applications can be made fireproof, however, intumescent sealants and mastic are suitable for a limited range of applications. The most common of these include compartment walls, linear gap joints, movement joints and penetration seals. Below are some examples of such applications.

intumescent sealant around cables
Intumescent sealant seals and fireproofs gaps around and between cables.
  • Fire doors: sealing fire doors with an intumescent product helps keep the evacuation routes open for longer as well as preventing the fire from spreading past the doors.
  • Windows: it is also important to apply intumescent sealant to windows in order to ensure the fire does not spread outside. Nor should oxygen be able to seep through the windows feeding the fire.
  • Around plastic pipes: sometimes a fire collar is installed around pipes that go through walls. However, fire collars are not needed if a fire protection sealant is applied.
  • Cables: as flames and smoke can pass through the smallest of gaps, it is important to seal around cables running through the construction. Some intumescent sealant systems are also suitable for cable trays and between cables.

International standards to consider when fireproofing structures and buildings

Fire safety is one of the main concerns when it comes to constructing buildings and other structures. Therefore, many international and national standards are used to assure fire safety of products, such as intumescent sealant, and eventually entire constructions. The standards are often based on a time/temperature curves and consider integrity and insulation as well as give fire rating to the materials based on their contribution to spreading flames and producing smoke.

International standards for Intumescent sealants

The European standard EN 13501-2 classifies materials from A to F based on their contribution to the flames spread, A indicating that the material does not contribute to the fire. The standard additionally rates smoke production by materials from s1 to s3 and d0-d2. In Europe and North America this is one of the most relevant standards assessing intumescent sealants.

Other relavant, international standards are presented in the table below.

Fire rating standardScopeNotes
EN 1366-3 and 4Test standard for penetration sealsMost relevant standards for fire resistance testing of intumescent sealant systems.
EN 13501-2Classification standard for linear joint seals and service penetration sealsLeading to EI classes. Relevant for EN 1366 and EAD
BS 476-20Test standard for linear joint seals and service penetration sealsBritish standard; replaced by EN 1366/EN 13501 but still in use in some regions
EAD 350454-
Fire stopping and fire sealing products – penetration sealsSuperseded ETAG 026. Leading to CE marking and DoP.
Fire resistance tested according to EN 1366
EAD 350141-
Fire stopping and fire sealing products – linear joints and gap seals
ULCertification scheme for product safety based in the USDifferent test methods and requirements for different regions
AS 1530.4Test and classification for linear joint seals and service penetrationsAustralian standard, technically the same as EN 1366
CertifireCertification scheme for fire protection productsRelevant for intumescent sealants in the Middle East
International standards relevant to intumescent sealant systems
cementitious types of grout for natural stone on a floor

How to choose the right type of grout for natural stone?

Natural stone tiling projects consist of several steps including laying the tiles, sealing them and grouting the gaps. In this article we take a closer look at the latter, as there are different types of grout for natural stone, and the choice is not always obvious. The purpose of grout is to help keep the tiles or stones in their place, create a watertight seam which prevents liquids from seeping to the adhesive layer and make up a supportive network throughout the tiled area.

When working with natural stone, the choice of grout should be based on several factors including the stone type, color of the stone and the gap width. Especially when tiling with naturally shaped natural stone, the gaps may be rather large, which requires a special grout.

Cementitious grout – sanded and unsanded

applying grout for natural stone with a trowel
Of the types of grout for natural stone, cementitious grout is the most common.

Cementitious grout is the oldest and most common grout for natural stone flooring. It is also suitable for grouting vertical tiling. The main ingredient of these types of grout is Portland cement which is accompanied by filler particles of different sizes, water retentive additives and color pigments. Sometimes adding a latex polymer can improve waterproof properties.

Cementitious grout is usually a powder which requires mixing with water prior to application. The water retentive additive prolongs the curing time of the grout allowing for longer processing time. The downside of cementitious grout is that the seams need frequent maintenance, as the structure remains somewhat porous. Typically the seams require sealing once in a year or two.

2 types of cementitious grout for natural stone

Cementitious grout exists in two types: sanded and unsanded. The choice between the two is often based on the width of the gaps that require filling and sealing.

  1. Unsanded
    Unsanded cementitious grout contains very fine mineral powder which makes the texture smooth. These are suitable for narrow seams as they are prone to shrinkage. The wider the seam, the more grout is needed and the more it shrinks causing the grout to crack easily.
  2. Sanded
    Sanded grout is ideal for large seams between natural stones. These types of grout for natural stone contain sand which makes the bonds stronger and prevents cracking. If sanded grout is applied to soft or glossy stone, the sand may scratch the surface. As a precaution, the compatibility of the grout and tile should always be tested on a sample.

Note that both of the types of cementitious grout may stain porous natural stone. Therefore, sealing the tiles, or applying grout release, is recommended 24 hours before grouting. The sealer should not be applied too soon after natural stone adhesive.

Epoxy grout – the best grout for natural stone tiles

Epoxy grout is strong, form impermeable seams and is resistant to staining. It could well be said that this is the best grout for natural stone. However, all the benefits have a price tag: epoxy grout is the most expensive type of grout for natural stone. It may, nonetheless, be worth the investment, as the seams do not require sealing – ever.

Epoxy grout is typically a two or three component system which consists of epoxy resin, silica fillers, hardener and color pigments. Mixing the resin and the hardener prior to application starts the chemical reaction resulting in curing. Epoxy grout has a rather short processing time making it slightly more difficult to apply than cementitious grouts.

Tip: to extend the processing time, divide the mixed grout to two containers: one to use right away and the other to keep in the freezer. The low temperature slows down the chemical reaction.

Cementitious epoxy grout

When Portland cement is added to epoxy grout, the result is a system with similar properties to those of cementitious grout. However, the epoxy improves the waterproof properties, makes the seams harder and stronger and reduces, but does not eliminate, the need for maintenance. As these seams are comparable to those created with cementitious grout, they must be sealed after the grout is applied.

Pre-mixed grout for commercial use

If the properties of epoxy grout are what your project requires, but the application process does not seem appealing, you might consider a pre-mixed system which is as strong as epoxy. Traditionally, pre-mixed grout is not the most ideal system for commercial applications which require certain certification and durability. However, the most innovative, even revolutionary systems are as strong as 2K epoxy grout and comply with standards such as ANSI 118.3, the American National Standard specifications for chemical resistant, water cleanable tile setting and grouting epoxy. In addition to compliance with ANSI 118.3, these pre-mixed grouting systems come with other benefits including:

  • Increased efficiency: as these systems do not need mixing, and they are fast and easy to apply thanks to their creamy consistency, efficiency can be significantly increased.
  • Versatility: the pre-mixed grout is suitable for interior and exterior use. It also works well with different tiles and surfaces. Therefore, it offers a wide range of possibilities as a grout for natural stone tiles.
  • Strength: some pre-mixed grout systems are just as strong as traditional epoxy grout even though they do not contain epoxy resin.
  • Chemical resistance: one of the main problems usually experienced with pre-mixed systems is poor chemical resistance. The new, revolutionary formulation, nonetheless, is resistant to a broad range of chemicals. Contact us for more information!
  • Low VOC: pre-mixed grout for tiles exists as environmentally friendly systems which have close to zero VOC value. The systems free of epoxy resin have a lower risk of allergic reaction.

More information on different types of grout for natural stone

Do you need more information on the different types of grout for natural stone? Are you looking for a solution for a specific project? Or would you like the challenge your current supplier? Contact us and let our experts find you the best possible grout for natural stone in your project.

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man laying tiles on natural stone tile adhesive

Flawless tiling with natural stone tile adhesive

Natural stone tiles are extremely attractive and create a special atmosphere, however, they are not the easiest to work with due to the delicate nature of natural stone tile. The most important factor to consider is the natural stone tile adhesive which initially determines the success of the tiling work. However, next to the right type of adhesive for tiles, other factors such as natural stone tile type, application method and grouting system also contribute to succesfull tiling.

Not only does the best tile adhesive guarantee great end result but also faster and easier application. When you choose for the most suitable natural stone tile adhesive for your project, you know what to expect from the result and your process gets topped up with some speed and efficiency!

Here you will learn about the different natural stone tile types, get infomation on substrates and suitable tile adhesive types, discover the different types of tile adhesive, and find out the difference between interior and exterior tile adhesive.

Consider the needs of natural stone when choosing an adhesive for tiles

When tiling with natural stone, there are a couple of factors that must be taken into account in order to achieve the best end result. Natural stone tile is not simply one type of tile, but the term covers all natural stone tiles ranging from limestone to marble and granite, each requiring a specific type of adhesive for tiles. The stone tile types can be divided into groups followingly:

  • Calcareous: includes all natural stone tile types that contain calcium carbonate such as limestone, marble and some sandstone types.
  • Non calcareous: these are the stone types that do not contain calcium carbonate. Non calcareous stones include for example granite, sandstone and basalt.
  • Slate: this is a metamorphic stone formed over a long period of time. Slate results from a mix of other stone types and minerals which become one under high pressure.

The natural stone types differ from each other by several ways, which means that they require different types of tile adhesive. The most important properties of the stone that should be considered when choosing glue for tiles include:

  • Porosity: for example limestone and sandstone are very porous by nature requiring a natural stone adhesive which does not get absorbed into to the tile. On the other hand, marble and granite are very dense by structure and therefore, a greater range of tiles adhesive systems is available for them.
  • Movement: temperature extremes and fluctuation affect natural stone tile types differently. The behavior of the tiles is also different whether they are part of an interior or exterior. When the stone is likely to be affected by temperature fluctuation (exterior applications, floor heating etc.) flexible stone fixing adhesive is recommended.
  • Color: the tiles also vary by color: some are lighter than others and for instance limestone and marble can even have a translucent look to them. Therefore, as a rule of thumb, never apply grey natural stone adhesive to light colored tiles. Nor should you use spot fixing as the stone adhesive may form shadows and color changes on the tile, not to mention that spot fixing can lead to cracks and breakages as the load is not equally distributed.

The substrate affects the choice of glue for tiles

Not only is it important to consider the needs of the specific natural stone tile types, but also those of the substrate the tiles are going to be laid on. Also here the porosity of the substrate plays an important role.

It is important to know whether the substarte is porous. Porous tiles may absorb regular tile adhesive types into the pores, which results in weaker bond and possible adhesive failure. On the other hand very dence and flat substrates require a stronger adhesive as there are no pores to promote adhesion. For example tile to metal adhesive is one that provides good adhesion on hard substrates.

The load bearing capacity of the substarte must also be considered. For example when tiles are applied to an existing tiling, a special tile on tile adhesive is needed. The weight of the new tiles must also be considered for the sake of the substrate. Additionally the location of the substrate matters: interior and exterior tile adhesive systems differ from each othe in regards og flexibility and temperature resistance. For example an exterior wall tile adhesive is generally stronger but likely to be more flexible than similar product intended for interior use.

TIP: most manufacturers name their products by the type of tile and substarte they are suitable for. When laying tiles on metal, look for a tile to metal adhesive and if applying tiles to existing tiling, opt for a tile on tile adhesive. On the other hand, some products are named by the tile type they are made for, such as marble tile adhesive.

The most common types of tile adhesive for natural stone

There are several types of tile adhesive for natural stone which all can result in a faster and easier process as well as a stunning end result. There is no best tile adhesive for natural stone that works for all projects; the best glue for tiles is defined by the tile type, environment and substrate.

The most common natural stone tile adhesive types include the following.

High strength construction epoxy tile adhesive

Epoxy is one of the strongest and most durable adhesive of all times. Therefore, in the right formulation, it is also suitable as a tiles fixing adhesive. Most types of epoxy tile adhesive are flexible, which means that the finished tiling is less likely to be affected by temperature extremes and fluctuation. Epoxy wall tile adhesive is applied in thinner layers than epoxy tile adhesive for floors, yet they both result in extremely strong bonds.

Cement based thin set and thick bed tile adhesive systems

Cement-based adhesives or mortar exists as thin set and thick bed tile adhesive. These are suitable for most types of natural stone tiles as long as they are not absorbent. Generally mortar is available in white and grey colors. Thick bed tile adhesive is common on floors that are often wet (exterior, bathrooms, swimming pools etc.). Thin set adhesives, in turn, can be applied on both floors and walls. When looking for an easy tile adhesive, cement based products are a considerable option.

Custom-made polymerized glue for tiles

When it comes to polymer adhesives, a lot is possible. Also for natural stone tiles, there are multiple flexible polymerized adhesives available which can be tailored to fit the purpose perfectly. For more information on what is possible with this type of adhesive for tiles, do not hesitate to contact us!

The right natural stone fixing adhesive for a specific environment

natural stone tile adhesive on the floor
For floors it is important that the air need of the natural stone tile adhesive is considered.

The most common applications of natural stone tiles are interior and exterior walls and floors. When laying floor or wall tiles made of natural stone outside, it is important to consider the ideal application conditions: not too cold and not too humid. Most stone fixing adhesivesystems require a certain ambient temperature and humidity percentage to be able to harden. Interior tiling has more adhesive options as the temperature and humidity are not likely to exceed recommended values.

Temperature extremes and fluctuation affect the choice of tiles fixing adhesive

When choosing glue for tiles, it is also crucial to consider which factors or elements are likely to affect the finished tiling. Especially temperature extremes and fluctuations should be taken into account, as they may cause tile movement, possibly damaging to the stone adhesive. For exterior tiles, a flexible adhesive is recommended as the stones are likely to be affected by low and high temperatures as well as rapid fluctuation due to difference between day and night temperature. For example exterior wall tile adhesive is almost predominantly flexible to some extent. In interiors the temperature fluctuation is usually not great enough to affect the tiling or the tile adhesive unless floor heating is installed under the tiles. Natural stone tiles above floor heating always require a flexible natural stone glue in order to prevent cracking due to movement and extend the lige expectancy of the tiling.

Natural stone glue for wall and floor tiles

Regarding the adhesive, it matters whether the tiles are laid on walls or floors as they require either vertical or horizontal bonding. For floors, it is crucial to consider the air needs of the adhesive. As there is not much air under floor tiles, the adhesive should be able to cure through other means to guarantee shorter curing times. For walls, in turn, it is important that the adhesive is strong enough to hold the weight of the tile on a vertical surface. Also the weight of the tile should be considered. When looking for a strong solution for heavy wall tiles, an epoxy tile adhesive is an option.

Sound insulation adhesive for tiles

Some applications also require special properties from the tile adhesive. One of such cases is when sound insulation is needed. Naturally, sound insulation could be taken care of by installing a membrane or using mats, however, a mortar-like adhesive can also do the job more easily and at lower cost.

A special sound insulation tile adhesive usually consists of advanced polymers, rubber fillers and reinforcing fibers. The fibers provide strength and the rubber fillers ensure flexibility. Additionally, the advanced formulation of the adhesive protects the tiling from cracks that originate from the substrate. Find out more about sound insulation adhesives for natural stone tiles by contacting us.

Cost efficient sound insulation with adhesive

One of the most important benefits of realizing sound insulation using an adhesive is its efficiency. Sound insulation tile adhesives are easy and fast to apply as well as cost efficient. Labor costs are further reduced due to the fact that the tile adhesive and sound insulation are applied in one go using a single system.

Find the best tile adhesive for natural stone

As there are many natural stone tile types and possible stone fixing adhesive systems to realize the tiling with, it is not always an easy job to pick the best tile adhesive. New technologies and chemistries allow for smart natural stone glue types which speed up the process and result in beautiful tiling. However, sometimes a more traditional adhesive does the job best. In case you are curious for the options or are looking for a trusted adhesive for natural stone tiles, hit the button below and contact us!

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man installing masonry veneer on a masonry veneer mortar bed

Masonry veneer mortar guarantees durable results

Masonry brings warmth and feel to interiors and exteriors, and it works on large surfaces as well as on smaller details. However, it is not the cheapest of options, and the installation can be laborious. Therefore, many projects end up with masonry veneer, which creates the masonry-effect on interior and exterior walls, fireplaces and many more applications at lower cost. Masonry veneer creates long lasting stone brick looking surfaces as long as the right veneer type is used, the installation is done by a professional and high quality materials, including masonry veneer mortar or adhesive, water and air barriers as well as pointing mortar, are used.

Traditional vs. modern – 2 ways of masonry veneer installation

One of the main reasons for masonry veneer installation failure is water intrusion which causes delamination. Water and air barrier materials as well as masonry veneer mortar have a great impact on whether water intrusion happens. Therefore, these materials should be chosen carefully keeping in mind the veneer type and application. Masonry veneer installations can be carried out in two ways:

man applyin masonry veneer mortar at the back of a tile
Traditionally, masonry veneer mortar is applied to the back of the tile and then placed on its spot.

1. Traditional masonry veneer installation

Traditionally, masonry veneer is installed by applying two layers of felt paper followed by a metal lath. The lath is coated with a mixture of regular sand and masonry cement. The veneer is then placed on the prepared surface piece by piece. Masonry veneer mortar is applied to the back of each tile, after which they are placed on the surface. To make the tiles stick, they must be held on the spot and not moved once they touch the surface.

The traditional masonry veneer adhesive may cause installation failure due to the fact that the adhesive is not strong enough for heavy duty vertical bonding. Fortunately, there are masonry veneer mortar systems that are developed for vertical bonding.

2. Modern polymer enhanced mortar for masonry veneer

To overcome the two most common issues involved in traditional masonry veneer mortar applications (delamination and poor vertical bonding strength), more modern systems have been developed. These include polymer enhanced mortar systems which allow for a wider range of insulation possibilities and provide greater strength on vertical surfaces. Instead of regular sand-cement mortar, the substrate should be prepared by applying two or more coats of air and water barrier in order to create a membrane that does not let any air or moisture through. Learn more about suitable air and water barrier products by contacting us.

Polymer fortified masonry veneer adhesive benefits

The polymer enhanced mortar systems for veneer have several properties that make them the ideal choice. The most significant benefits include:

  • No sagging: regardless of the application method, polymer fortified adhesives do not cause the masonry veneer to sag, which guarantees long lasting results on facades, fireplaces and other vertical surfaces.
  • Free of VOC: most mortar systems, also tile mortar, come in a powder form which is mixed with water. The systems cure as the water evaporates. No solvents are involved in the process, which results in environmentally friendly zero VOC products.
  • Resistant to microorganisms: the mortar systems approved for exterior use in particular are often resistant to microorganisms, which prevents growth of mold and mildew.
  • Two application methods: the masonry veneer adhesive can be applied in two ways: back of the tile and mortar bed. This makes the adhesive mortar flexible in regards of application. Technical information, product suggestions and training possibilities are available upon request.

1. Back of the tile veneer adhesive application

First a skim coat is applied to the back of the tile followed by a thicker layer of mortar. The tile is then placed on the substrate, slid an inch or two from its place and moved back to the final position. This is done to ensure good adhesion.

2. Masonry veneer mortar bed

A faster method of working exists when the veneer mortar is applied on the substrate and the skim coated tiles are pressed on it. Also when using this method, the tile should be slid back and forth from its place to guarantee adhesion.

Buying high quality masonry veneer mortar

One of the key factors that encourage successful masonry veneer installation is the type of mortar used to bond the tiles to the substrate. If you are looking for a high quality masonry veneer mortar system, do not hesitate to contact us. Our experts are happy to help you find the best possible products for your project.

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Windshield adhesive pictured from the inside of a car

Windshield adhesive has been bonding for decades

Windshield adhesive is among the oldest bonding applications known to the automotive industry. The initial purpose of windshield adhesives was to keep vehicles´ windshield in place but nowadays they do much more. Similar adhesives are also applicable to other windows and direct glazing of a wide variety of vehicles.

Adhesives applied to and around windscreens support and improve the stability of the vehicles as well as contribute to safety in the event of crash by making sure the windshield does not detach from the frame. Additionally, the adhesives are environmentally friendly and they result in faster processes in both OEM and aftermarket applications.

Types of adhesives for windshield bonding

Polyurethane and silicone are traditional means of windshield bonding and sealing. However, the technological development now allows for smarter adhesive solutions such as silyl modified polymers and modified silane polymers. These are slowly replacing windshield silicone adhesive systems and polyurethane-based solutions.

For cars, an adhesive provides sufficient windshield bonding and sealing, but larger vehicles such as buses and agricultural machinery may require an additional sealant to protect the bond.

Silyl modified polymer windshield adhesives

Silyl modified polymer windshield adhesives exist as one and two component systems which are both easy to apply with the right equipment. They do not contain any solvents, isocyanates, halogens or silicones, which reduces their VOC close to zero.

Next to fast curing, the ultimate advantage of these windscreen adhesive systems is that they do not require a primer. This reduces the application time and eliminates costs of surface preparation.

frozen windshield with windscreen adhesives
Windshield adhesive must endure changing weather and retain their flexibility at all times.

Modified silane polymer windscreen adhesive systems

When one solution for multiple substrates is sought, modified silane polymer adhesives are a considerable option. They adhere well to materials such as wood, plastic, metal and composite materials. MS polymers are also extremely resistant to the elements and remain flexible at all times, which is beneficial to all kinds of glazing in vehicles.

Modified silane polymers are common in windscreen adhesive systems because they combine beneficial properties of other materials such as acrylates, urethanes, silicone and butyl rubber. They are easy and fast to apply and speed up the process remarkable thanks to their fast curing ability.

Find the right windshield adhesives for your needs

Whether you are looking for windshield bonding solutions for OEM or aftermarket applications, our experts are happy to help you find the best possible system. All you need to do is hit the contact button below and fill in the form!

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electric vehicle battery bonding done with adhesives

Electric vehicle battery bonding – the choice between adhesives and mechanical fasteners

Gas-driven car and electric vehicle batteries traditionally have relied on mechanical fasteners. However, in some gas-drive batteries, adhesives are replacing the nuts and bolts. Although the batteries are different from each other, and not inter-replaceable, similar adhesives are applicable in electric vehicle battery bonding. The application of adhesives helps extend the haul between charges, which is necessary in vehicles that fully rely on batteries.

The unique construction of EV batteries

EV and hybrid batteries are far more complex than six-cell, thin-walled 12 volt batteries that enable starting a gas-driven engine. Here the battery gives a brief bolt of energy before fuel and spark ignited combustion take over. In electric vehicles all the energy needed for the vehicle must come from the battery.

EV batteries consist of series of multiple cells and thick walls. They have pack voltage of 100-200V in hybrids and 400-800V in electric vehicles. They also must have as large an energy capacity as possible to extend the distance between recharges to the maximum.

Adhesives for electric vehicle batteries win with light weight

The challenge the electric vehicle batteries are facing has two sides: the batteries must be as efficient as possible with a large energy capacity. On the other hand, at the same time the vehicles must be as lightweight as possible. This where replacing mechanical fasteners with adhesives can play an important role: they are more suitable for the assembly of the new type of batteries. Additionally adhesives for electric vehicle batteries are significantly lighter in weight than mechanical fasteners, and contribute to the weight reduction of the entire vehicle. Providing better gap control, adhesives also effectively bond dissimilar materials, which is a big pro in the vehicle industry.

industrial packaging line where pressure sensitive hot melt adhesive is applied

Packaging industry benefits from pressure sensitive hot melt adhesive

Pressure sensitive adhesives (PSA) refer to non-reactive adhesives which form bonds of different levels. The bonding process is started by applying moderate pressure. Next to conventional solvent based, waterborne and reactive adhesives, PSA adhesives also exist as hot melt systems. The pressure sensitive hot melt adhesive (HMPSA) systems are very common throughout industries including packaging and paper.

Pressure sensitive adhesives are also known as self-adhesive systems as they form bonds when pressure is applied. In the packaging industry, tapes and films commonly make use of pressure sensitive hot melt glues. The use of these adhesives allows tapes and films to adhere to surfaces which usually are difficult to bond. For example, flexible packaging materials as well as highly varnished, coated or glossed boards benefit from HMPSA adhesives.

HMPSA for packaging tape

manufacturing process of packaging tape with pressure sensitive hot melt adhesive
Pressure sensitive hot melt adhesive is common in industrial packaging tape and film.

In the packaging industry pressure sensitive hot melt adhesives are common in manufacturing packaging tape as the specialty tapes market is growing. Using HMPSA adhesive for tape allows for neat and efficient application of the adhesive through numerous methods. It also provides the tape with beneficial properties such as fast formed permanent bonds, adherence to a wide variety of surfaces and excellent temperature performance. Below we will take a closer look at these three benefits.

1. Immediate bonding with pressure sensitive hot melt adhesive tape

Pressure sensitive hot melt adhesives exist as different types. The ones designed for high tack, self-adhesive tapes and films for the packaging industry commonly form immediate, destructive bonds. The bonding process starts once they are pressed against the surface to which they should adhere.

The fast adhering enables fast application which supports efficient processes as a larger entity. The packaging tapes that make use of HMPSA adhesive are suitable for instance for security closure construction.

2. Adhering to a wide variety of difficult-to-bond surfaces

Surfaces that have low surface energy are commonly difficult to bond. However, self-adhesive hot melt adhesives can help overcome the issues these surfaces may create. In packaging, such surfaces are rather common as they include glossy, high varnished and coated surfaces as well as flexible packaging material. Therefore, hot melt PSA adhesives are a considerable option when one wishes to bond these materials.

Share your HMPSA needs with us and get more information on possible solutions that bond perfectly with the surfaces in your process!

3. Excellent temperature performance of HMPSA adhesives for packaging

As many tape and film applications in the packaging industry involve temperature extremes and fluctuation, pressure sensitive hot melt adhesive systems have a design which promotes excellent performance regardless of the temperature. Some of the adhesive tapes are perfect for above room temperature applications whereas others are suitable for applications that take place in cold warehouses and storage areas.

Note that you should choose a self-adhesive tape based on the specific requirements of the application and service conditions.

How pressure sensitive hot melt adhesive works

As we defined in the beginning of this article, pressure sensitive adhesives are self-adhesive and non-reactive forming bonds under light pressure. Hot melt adhesives, for their part, come in a solid phase, take a liquid, flowable form when heated, and solidify again when cooled down.

When these two technologies are combined to pressure sensitive hot melt adhesive systems, it is possible to use them to efficiently produce industrial tapes. The adhesive is applicable through various methods including slot die, roller or spray.

Find an HMPSA adhesive supplier

Self-adhesive hot melt adhesive systems are well-known to the packaging tapes industry and there are plenty of suppliers with many years of experience in successful bonding. Due to the multitude of suppliers and available bonding solutions, choosing the right adhesive is not always a straight-forward process. Share your HMPSA adhesive needs with us and let our experts ease the process for you by connecting you with the most suitable supplier and product.

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pile of pet bottles with labels glued using alkali soluble labeling adhesive

Alkali soluble labeling adhesive increases PET recyclability

Different adhesives used in the packaging industry greatly contribute to the development of greener packaging solutions. Not only is it important to consider the adhesives used in packaging itself, but also the ones used in labeling. Alkali soluble labeling adhesive solutions have been developed to increase the recyclability of containers, especially PET bottles.

The alkali soluble labeling adhesive systems allow for fast and efficient removal of labels. This enables increased, fast-paced recyclability of PET bottles. The adhesive is easy to apply and strong keeping the label in place. Once the container is ready for recycling, the adhesive can be dispersed in an alkali bath, leaving little to no residue.

Important qualifications of alkali dispersible hot melt labeling adhesive

a PET bottle with white label attached with alkali soluble labeling adhesive
Using alkali soluble labeling adhesive on PET bottles allows for fast and effective recycling.

Most sustainable alkali dispersible labeling adhesives are hot melts, which means that in room temperature they appear in solid phase but become liquid once heat is applied. These adhesives are 100% solid, and do require solvents of any kind. The absence of solvents makes hot melt adhesives extremely eco-friendly.

Next to environmentally-friendliness, alkali soluble labeling adhesives should meet other requirements in order to qualify for recyclable PET bottle labeling. Meeting the strict requirements set by for instance, Returpack kft. ensures that the alkali soluble labeling adhesive supports efficient and effective recycling processes. According to these requirements, the adhesive must be soluble in alkali in 65°C (149°F). As the adhesive is alkali dispersible in a rather low temperature, the energy consumption is reduced and process sustainability is increased.

Choosing a labeling adhesive

There are different types of alkali soluble labeling adhesive systems. Choosing the most suitable for specific packaging requires considering three aspects:

  • The label: the label adhesive must be suitable for bonding the label material, usually a type of plastic, although paper labels are becoming more and more common.
  • The container: next to the label material, the adhesive also must be compatible with the material of the container.
  • End-use environment: the environment where the product is likely to end up brings along possible performance requirements for the labeling adhesive. For example, some packaging is stored in refrigerators, and heated up in an oven, which requires temperature resistance.

Next to these aspects, the application process sets requirements for the alkali soluble labeling adhesive. Technical properties of the adhesive that should be considered include:

  • Minimum application temperature: the lowest temperature in which the adhesive can be applied. A low temperature packaging adhesive should be considered if the application takes place in a cold warehouse or elsewhere in low temperature.
  • Initial tack: the level of adhesion formed once the surfaces to be bonded come in touch. Low initial tack can be beneficial for some labeling applications, as it allows for moving the labels after the adhesive has applied.
  • Ultimate adhesion: when the alkali dispersible adhesive is completely dry and has reached its final cure. This is important to know for further processing, storing and logistics purposes.

For more information on choosing the best labeling adhesive and suggested products, contact us! Our experts are happy to help you out.

Hot melt labeling adhesives – the most common solution for PET bottles

The most common labeling adhesive chemistries include water based and hot melt systems, the latter being the most popular. Hot melt adhesive are easy to store and apply with the right equipment and they do not require any solvents.

Furthermore, hot melt labeling adhesives exist for different application and service temperature ranges with varied chemical resistant properties. A hot melt adhesive can water or alkali soluble, which allows it to be used on recyclable PET bottles.

Interested in alkali soluble labeling adhesive?

Since many factors must be considered when choosing a labeling adhesive, it is a job involving many parties including the product manufacture, container manufacture and label producer. In case you are interested in a hot melt alkali soluble labeling adhesive, contact us! We are determined to connect you with the adhesive supplier who can provide the best possible solution.

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used paper bag with bio-based packaging adhesive

Step towards sustainability with bio-based packaging adhesive

In the packaging industry, sustainability is becoming more of a norm rather than something special offered by a small selection of companies. Environmental legislation and standards, the environmental responsibility of manufacturers as well as increased awareness of companies and consumers all have encouraged the development of bio-based packaging adhesive systems which make up a greener bonding solution with reduced carbon footprint.

Bio-based packaging adhesives are those that consist partially or entirely of biomass derived from renewable sources. These adhesives increase the recyclability of packaging while remarkably reducing its environmental impact.

Benefits of bio-based packaging adhesive solutions

Most of the bio-based packaging adhesive systems are hot melt adhesives, meaning that they come in a solid phase, usually in a form of pastilles, and are brought to liquid phase by applying heat, hence the name hot melt. These adhesives are significantly greener than their conventional alternatives, nevertheless, they come with a range of other benefits, too.

automatic hot melt adhesive applying bio-based packaging adhesive on carton
Most hot melt application machines can be used for applying both fuel-based and bio-based packaging adhesive.

The benefits of bio-based hot melt adhesives include:

  • Excellent performance: the performance of the packaging adhesives is not affected by their bio-based content other than in regards to thermal stability.
  • Temperature resistance: bio-based hot melt glues are resistant to temperature extremes making them suitable for packaging experiencing conditions from ovens to freezers. This remarkably broadens the range of possible applications of these adhesives.
  • High speed production: many bio-based hot melt adhesives have a very short open time which requires fast processing. However, this also allows for speedy production.
  • Fast curing: these adhesives cure fast, which supports fast paced production.
  • Easy to switch to: in most of the cases bio-based hot melts can be applied using the same equipment as for applying fuel-based hot melt adhesives. This makes shifting between hot melt systems less costly.

Applications realized with ecological hot melt adhesives

The number of possible uses of bio-based packaging adhesive systems is ever-increasing, as the demand for these greener bonding solutions grows. Currently bio-based hot melts are used for example for:

  • Tray forming
  • Top and bottom case sealing
  • Carton sealing
  • Wraparound carton sealing

The bio-based adhesives are continuously being researched and improved, and new applications are developed all the time. In case you are interested in switching to bio-based packaging adhesives, but are not sure whether it is realistic for your application, contact us: our experts are happy to take on the challenge of finding the most suitable eco-adhesive solutions!

EN 16785-1 evaluates bio based content

When looking at bio-based adhesives, the European Norm EN 16785-1 plays an important role. This standard verifies biobased content in products in two ways: by radiocarbon analysis and elemental analysis according to CEN/TS 16440 for Carbon- 14 component.

EN 16785-1 defines biobased as “derived from biomass”. The bio-based packaging adhesives are those partially or entirely made of materials derived from biomass. The standard covers a wide range of products due to the fact that it is applicable to solid, liquid and gaseous compositions which contain carbon.

Find a bio-based packaging adhesive supplier

Although bio-based adhesives are rather new to the market, there are companies with proven track record of successful bonding for decades, that have recently added bio-based adhesives to their portfolio. Contact us, and let our experts connect you with the most suitable bio based packaging adhesive for your application.

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a rail transport vehicle with adhesives and sealants

Rail industry adhesives and sealants for safety and comfort on railways

Safety, comfort, durability and effficiency are key factors in manufacturing railway vehicles such as trains, trams and underground trains. Among other materials, adhesives and sealants play a crucial role in the production process and finished product. Sealants and adhesives for rail transport are used in the interiors and exteriors of rail vehicles throughout their lifecycle from design and production to field service and maintenance. These products can be used for sealing and bonding all railway vehicles from high speed trains to railcars of light rail transit.

The main task of rail industry adhesives and sealants is to make the manufacturing process faster and the vehicles safer. The wished results can be obtained with for example specialist rail industry silicones, MS polymers, contact adhesives and 2K polyurethanes depending on the application.

The uses of sealants and adhesives in railway vehicles

Adhesives and sealants bond and seal plastics, glass and metal in railway vehicles such as trains and trams. The products can roughly be divided into sealants, adhesive sealants and adhesives. The adhesive sealants are the newest addition, and include products with superior sealing and light adhesive properties.

Sealant and adhesive materials for rail exterior

Sealant and adhesive materials for rail exterior protect joints, overlaps and seams as well as fill gaps and cracks in repair applications. They also used in body structure assembly, exterior panel bonding and other applications replacing mechanical fasteners and welded bonds. The most common applications of sealants and adhesive materials for railcar exterior include the following.

train interior with sealants for rail transport
Sealants and adhesives for rail transport are used in interiors for joints between floors and walls as well as for windows and doors.
  • Door sealing: keeping moisture and wind outside is an important job carried out by rail sealants. These sealants are often flexible systems which are resistant to water and weather.
  • Sealing and bonding direct glazing: adhesives and sealants for windows are the oldest chemical means of bonding and sealing known to the rail industry. Now adhesives and sealants are used for windhields and windows in rail vehicles with all designs and speeds.
  • Railcar exterior panel bonding: exterior panel bonding with adhesives is the application that results in the greatest weight reduction compared to panels bonded using mechanical fasteners.
  • Bonding other exterior components such as antennas: rail industry adhesives are suitable for a wide range of applications are more are being developed. Attaching antennas during assembly or afterwards is one of the more innovative applications.

Sealant and adhesive materials for rail interior

Sealants and adhesive materials are also commonly applied to railcar interiors. Not only do they contribute to on board comfort but also guarantee safety. Next to cancelling noise and vibration some sealant and adhesive materials for rail interior are fire resistant. The adhesive and sealant applications in rail car interiors include:

  • Interior sealing and fire protection: sealing rail interior components is doen by products specificall designed for the job. These sealants know many chemistries, MS polymers being one of them.
  • Floor bonding: special adhesives are used to bond rail vehicle floors. These may contribute to fire safety of the vehicle.
  • Bonding seats: bringing additional comfort and visual appeal, special adhesives are used to bond seat upholstery. One of the adhesives involved in making vehicle seats is methyl methacrylate (MMA).
  • Sealing joints between walls and floors: rail sealants make joints impermeable to moisture and protect the joints as well as resulting in a neat seam.

The requirements of sealants and adhesives for rail transport

Trains, trams and underground trains are subject to harsh environments created by changing weather conditions, vibration and continuous use. Therefore, sealants and adhesives for rail transport must meet the requirements set by the environment; they must be:

  • Shock resistant: as the travel on the rails together with the track switches may cause vibration, it is of high importance that the bonds and seals do not break. Therefore, they must be strong and flexible.
  • Electrically insulating: for some applications, it is paramount in regards of safety that the adhesives and sealants do not conduct electricity or that they completely insulate electrical charge.
  • Weather resistant: especially adhesives and sealants for exterior materials need to be weather resistant: they must endure temperature fluctuation, rain and UV radiation without being affected. Flexibility, UV stability and water resistance are characteristics to choose for: let us challenge you to come in contact with the strongest UV protected adhesive for the longest lifespan.
  • Visually appealing: trains, trams and underground trains serve as means for public transportation meaning that the visual aspects must not be ignored. Fortunately, most adhesives and sealants form a neat, equal surface which can even be over coated in order to alter the aesthetics.
  • Time and cost efficient: rail vehicles act as an irreplaceable part of the transportation business, and in business time is money. Therefore, the application of adhesives and sealants should be fast, yet it should lead to a highly durable result which does not require frequent maintenance or repairs.
  • Contributing to safety: depending on the application, there are sealants and adhesives that are certified and tested for example for fire safety, crash situations, durability in harsh environments and sustainability. The certificates are taken a closer look at later on in this article.

How rail industry adhesives and sealants compare to alternatives

The great advantage of sealants and adhesives is that they tend to be lighter in weight and greater in strength compared to their alternatives such as welded bonds. However, high quality adhesives and sealants beat the alternatives also in other measures.

  • Strength: compared to welded bonds and fasteners, adhesives and sealants are less likely to break due to their flexibility and immunity to hazards such as corrosion.
  • Eco-friendliness: even though sealants and adhesives are chemicals, there are also environmentally friendly solutions that do not contain isocyanates, silicone, halogens or solvents.
  • Application: compared to for example welding, the application of adhesives and sealants is by far not as laborious. The application possibilities are also broader: bonds and seals can be created by brush, spray, spreading, wheel, web coating, beads and dots as well as other functional methods.
  • Visual appeal: most sealant and adhesive products are available in various colors and if not, they can often be over coated to match the wished visual end result.
  • Durability: sealants and adhesives are not affected by corrosion, hence they last longer in harsh environments than traditional fasteners and welded bonds.

Save time and money, improve process efficiency, get a stronger and eco friendly result that has increased visual appeal and durability with the best solutions for rail transport and vehicles. Do you want to profit from the advantages of the best adhesives and sealants?

Certification of adhesives and sealants for rail transport

Wherever safety is the priority, certificates and standards play an important role. This is true also for the rail transports and manufacture of railway vehicles. Therefore, to guarantee safety and compliance with regulations, choose for products that have the certificates relevant for your application. Below you can find some of these regarding sealants and adhesives in rail transport. EN 45545 – 2 is the newest European standard for fire testing in rail transport. The adhesives and sealants fall under requirement sets R22 and R23 that cover requirements for interior seals, inductance coils, coils and contacts. The standard assesses products for three hazard levels, the lowest requirements being HL1 and the highest HL3. Bonds and seals can be made to comply with all three hazards levels: HL1, HL2 and HL3 to guarantee the safety of passengers and staff during onboard fire. Are your materials up to current, higher standards? Let us connect you with a system that meets and exceeds the set requirements!

Important certificates for adhesives and sealants for rail transport

FMVSS 212 stands for Federal Motor Vehicle Safety Standard: windshield mounting. This standard assesses the strength and durability of windshield (and window) mounting in crash situation. As the train windshields and windows are often glued and sealed using sealants and adhesives, their behavior in such situations is tested.

DNV GL provides functional safety for rail industry. DNV GL is a certification body that assesses, among others, products for rail transport according to several European and international standards. For rail transport these include reliability, availability, maintainability and safety, software and system safety. DNV GL certified sealants and adhesives are thus up to standards.

WheelMark indicates durability in harsh environments. Some adhesive and sealant products for rail transport can be certified according to the Maritime Equipment Directive set by the EU, due to the fact that similar or same products are durable enough to be used in ship building and repair, as well. These harsh environment adhesive systems are useful also in train exterior assemblies.

ISEGA assures that products are safe to be used in the preparation, processing, treatment, packing, transport and distribution of food. These products must have the lowest risk of contamination, and other hazards. Therefore, the ISEGA certification, together with HACCP, is crucial especially for sealing and bonding products used in railway vehicles that transport food.

Sealants and adhesives for rail transport are one click away

In case your project is in need of a suitable sealants and adhesives for rail transport, please contact us. Our specialists will assist you in finding the right adhesive or sealant for the specific purpose. By contacting us you can also enquire for more information on the possibilities, assistance in application as well as adhesive and sealant training. Our experts are happy to help.

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ms polymer adhesives used in vehicle assembly line

MS polymer adhesives and sealants increase safety, efficiency and reliability

Modified silane polyethers, better known as MS polymers make exceptional adhesives and sealants for many industries among which transport vehicle assembly. MS polymer adhesives and sealants get their inspiration from silicone and polyurethane based systems while cancelling out most of the disadvantages associated with them.

MS polymer sealants and adhesives make transport vehicle assembly safer, more efficient and more reliable. They are also free of solvents, silicone and isocyanates which all are considered harmful to humans and the environment.

MS polymer adhesive and sealant applications in vehicle assembly

tram frame in assembly line with mas polymer adhesives and sealants
MS polymer adhesives can be applied to vehicle frames to reduce total weight and improve performance.

Bonding and sealing are crucial procedures involved in vehicle assembly. The industry is on a continuous look for more efficient, safer and more reliable systems which make the vehicles greener, faster and more environmentally friendly. MS polymer adhesives and sealants are suitable for instance for train, truck and bus assembly. The most common applications include:

  • Bodywork assembly: MS polymer adhesives offer a strong and easy to apply system for bonding bus frames, truck cabins and body structures of trains.
  • Sealing and bonding windows: one of the oldest MS polymer applications are sealing and bonding vehicle windows and windshields. The flexibility of MS polymer adhesives and sealants guarantee high performance on windows and windshields of vehicles.
  • Sealing floors, roofs and interior and exterior panels: MS polymer systems are also used for sealing floors, roofs and side panels of vehicles. Their flexibility allows for high performance, whereas the minimum surface preparation and ability to bond dissimilar materials guarantee assembly efficiency.

User and eco friendly MS polymer sealants and adhesives

One of the greatest advantages of MS polymer adhesive and sealants systems is that they do not contain any silicone, solvents or isocyanates. The absence of these ingredients is typical for all modified silane systems and it brings along multiple unique advantages.

MS polymer sealants and adhesives without solvents

Solvents have long been used in adhesives and sealants to achieve beneficial properties and fast curing. However, solvents are considered hazardous for the environment and humans as they may cause respiratory problems and soil contamination.

The absence of solvents reduces, but does not remove, the need for safety measures during application. It also eliminates the problem of shrinkage which is well known among solvent based systems. Solvent based systems cure by evaporation, which causes shrinkage. As MS polymers are almost predominantly 100% solid, shrinkage is not a problem to consider.

Isocyanate free MS polymer sealants and adhesives

Isocyanates are classified as potential human carcinogens meaning that the absence of this ingredient significantly increases the safety of the adhesive or sealant systems as well as that of the finished product.

Isocyanates are also tricky as they tend to cause bubbling when the adhesive or sealant is curing. As the system comes in contact with moisture in the ambient or on the substrate, the isocyanates react with it and produce CO2. As there are no isocyanates in MS polymer solutions, they can also be applied to damp or wet surfaces.

Benefits due to absence of silicone

Even though silicone is the most hazardous or harmful of substances, the benefits of excluding it in adhesive and sealant formulations are great. As modified silane polyethers do not contain silicone, they are not likely to cause skin irritation when uncured systems are touched.
Additionally, MS polymers are less likely to cause staining than systems that contain silicone oil. The silicone free nature of MS polymer adhesives and sealants also allows for painting with almost any water based paint.

Make use of the numerous advantages of MS polymer systems

Vehicle assembly is continuously challenged by increasing expectations and demands by the buyer, governmental bodies and environmental conditions. Therefore, the use of MS polymer adhesives and sealants has increased remarkably in the past years: they are strong, reliable, efficient and environmentally friendly.

MS polymer adhesive and sealant systems do not contain harmful silicone, solvents or isocyanates yet they still form strong and flexible bonds and seals. The application process is also increased in efficiency since MS polymers require little to no surface preparation, adhere to most substrates without a primer and bond dissimilar materials. They also possess many beneficial properties which increase the performance of the solutions. These include:

  • Water resistance: MS polymers form 100% watertight seals and bonds and can be applied to damp or wet surfaces.
  • Chemical resistance: modified silane polyethers are also resistant to most chemicals present in vehicle assembly lines including oil and fuels as well as cleaning substances.
  • Flexibility: even the most demanding elastic bonding and sealing applications can be realized with MS polymer solutions thanks to their extreme flexibility which is retained throughout their lifecycle.
  • Weather resistance: as vehicles are often subject to the effects of the elements, MS polymers make an excellent bonding and sealing solutions. MS polymers are weatherproof and last significantly longer than for example polyurethane based systems.
  • UV resistance: compared to silicone and polyurethane systems, MS polymer adhesives and sealants are more resistant to UV radiation and less prone to deterioration by it requiring less frequent maintenance when applied to vehicle parts exposed to UV rays.

Find the right MS polymer adhesives and sealants for transport sector

Regardless of the type of vehicle, trains, trucks, buses, agricultural machniery and specialty vehicles can all benefit from MS polymer adhesives and sealants in terms of safety, strength, reliability and efficiency. In case you consider modified silane polyethers a suitable choice for your vehicle assembly line, contact us and get more information. Our experts are dedicated to finding the best adhesive and sealant solutions for all applications.

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public transport rail vehicle interior with mma adhesive solutions in panels and seating

MMA adhesive becoming irreplaceable in transport vehicle assembly

The transport sector has traditionally relied on metal as well as fasteners and welded bonds, however, the desire to produce lightweight, economical vehicles in fast paced assembly lines has led to an increased use of plastics, composite materials and adhesives. One of the adhesives that has become nearly irreplaceable in transport vehicle assembly is MMA adhesive which effectively bonds metal, plastics and composite materials in any combination.

MMA (methyl methacrylate) adhesive belongs to the group of structural adhesives. It usually consists of two parts, resin and hardener, and it has numerous properties that benefit that automotive and transport sectors. This two component adhesive not only bonds dissimilar materials but also remarkably reduces the weight of the vehicles.

Beneficial MMA adhesive properties

Methyl methacrylate bonding is used across industries due to its many unique properties. These adhesive systems combine the strength of structural adhesives with a flexible cure profile which together provide high strength and a longer workable time allowing for application over large surfaces and bonding dissimilar materials. These MMA adhesive properties are beneficial in multiple industries, including automotive and transport.

Methyl methacrylate bonding in transport vehicles

bus seats with grey upholstery bonded with mma adhesive
MMA adhesive is ideal for many applications in the transport sector including seats of public transport vehicles.

The MMA adhesive properties that are beneficial for the transport sector in particular, range from fast application and cure to flexibility and strength. Methyl methacrylate bonding is suitable for various applications in heavy trucks, rail vehicles, buses as well as agricultural and construction machinery including bumpers, deflectors, roofs, blades, composite tanks, vehicle seats, interior body panel structures and instrument panels.

Depending on the MMA adhesive formulation, the beneficial properties brought along include:

  • Faster production: methyl methacrylate adhesives adhere fast, allow for adjustments and reach complete cure in 4-24 hours in room temperature.
  • Chemical resistance: MMA adhesives are insensitive to many chemicals present in a vehicle assembly line including grease, oil and fuels.
  • Minimum surface preparation: MMA adhesives are among the few solutions that do not require much (if any) surface preparation. This makes the assembly line even more efficient.
  • Lightweight: as the transport sector is continuously looking for lighter materials, MMA adhesives offer an excellent solution: they effectively replace mechanical fasteners reducing the weight of the finished vehicles.
  • Equal stress distribution: as adhesives are applied over the entire length of the bond, the stress is distributed equally, which leads to increased durability of the bond.
  • Smooth bonds: from an aesthetic point of view, MMA adhesives result in smoother bonds than mechanical fasteners and most other adhesives. They reduce bond line read through (BLRT).
  • Paintability: crucial for vehicle assembly, MMA adhesives are paintable and even withstand high temperatures involved in powder coating and electron coating.
  • Strength: methyl methacrylate adhesives are known for their strength: after having reached the state of final cure they have the strength of 80 to 90% of the one of epoxy adhesives.
  • Gap filling capability: many of these adhesives are capable of filling gaps. The extent of the capability is dependent on the MMA adhesive formulation.
  • Heat resistance: the high temperature resistance of these adhesives is usually up to 120°C on a long term. Most of the adhesives can withstand peaks of higher temperatures.
  • Impact and peel resistance: MMA glues have good impact resistance and excellent peel resistance. They also contribute to the safety of vehicles by having a good crash resistance.

Finding the product with the most suitable set of MMA adhesive properties is not always an easy job: contact us for more information on available systems, reliable manufacturers and latest developments in the MMA adhesives market.

About methyl methacrylate adhesive formulation

By definition methyl methacrylate adhesives are reactive acrylic adhesives which share properties with other structural adhesives. MMA glue systems are almost predominantly two component systems which consist of a resin and a hardener. In methyl methacrylate adhesives a peroxide based activator together with amines forms a free radical that initiates the radical polymerization of methacrylate.

One of the most important benefits of methyl methacrylate adhesive formulation is that it can be modified to suit specific applications. The methyl methacrylate bonding is often preferred due to its unique strength forming and curing processes: rather than slowly building up strength during the process, the adhesive remains workable and then cures into a fixture strength in a matter of minutes. Changing the MMA adhesive formulation and mixing rate allows for modification of the workable time and curing time.

Developments in the MMA adhesives market

Methyl methacrylate adhesives have taken a solid role in the transport and automotive industries as the chemical bonding material that allows for use of lightweight dissimilar materials as well as creates strong bonds in many applications. Regarding these adhesives, the fastest growing sector is projected to be composite materials, and the most demand is likely to come from automotive and transport sectors including road transport. This is due to the desire to produce lightweight, low carbon emitting vehicles. MMA adhesive properties benefit vehicle components, interiors and exteriors.

Get in touch with reliable MMA adhesive manufacturers

Although methyl methacrylate bonding is extremely common in automotive and transport sectors, there are differences between the MMA adhesive manufacturers and their products. In case you are in need of an adhesive system or are looking to challenge your current supplier, contact us and let us find you the MMA adhesive that benefits your process the most.

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Discover more solutions for transport & vehicles

super glue and other adhesives for home repairs

Repair instead of throwing away – super glue and other adhesives for DIYers

Glues are used almost everywhere from heavy industrial processes to everyday consumer goods and small home repairs. Adhesive like super glue is also a great thing to have at home, in the car or somewhere else within hand’s reach. There are several types of adhesives that are perfect for home repairs and DIY projects. They can save you money as you can repair broken items without needing to buy new ones.

Super glue is by far the most well-known adhesive used in repairs, yet it is not the only option. There are numerous adhesives that can be used for a wide variety of applications. Here we will take a look at the most common glues used in households including super glue, epoxy, wood adhesive and silicone based glues.

Super glue – the best adhesive for small repairs

Substrates: Metal, rubber, wood, ceramic, plastic and porcelain

Super glue is an adhesive that ended up on the list of most useful inventions in the 20th century. And that is no wonder, as the cyanoacrylate based glue bonds almost anything as long as the surfaces are small and flat. Super glues not only are superior repair adhesives to use at home, but industrial super glue also performs well even in heavy duty applications.

Super glue properties and curing

Generally, there are two types of super glue: gel and glue. Both of these have superior bonding power. The difference is that gel is less likely to drip and leak. Super glue is often called instant glue as it cures in a matter of seconds. You should, however, not be fooled by the very short curing as the full cure may take up to 24 hours. Therefore, after gluing the parts together, you should let the adhesive cure longer and keep the parts together with clamps or zip ties to preserve the true super glue properties.

Where to use instant glue

Most super glues are suitable for a wide range of substrates and they are ideal for glueing broken dishes, shoes, tears in car upholstery, disconnected car mirrors, handles, hoses and many more applications. You can even super glue metal to wood, an application where other general repair adhesives often fail. Just make sure the manufacturer confirms the use of their instant glue product on the specific material.

The best super glue products

As instant glue is a preferred product for many applications, multiple brands offer these products. Although everyone has their own preferences, two brands can be said to be more popular than the rest: Gorilla and Loctite.

loctite ultra gel control super glue package

Loctite Ultra Gel Control Super Glue

gorilla super glue gel pack

Gorilla Super Glue Gel

Where NOT to use super glue

Even though super glue is very strong, it is not the best choice for filling gaps and cracks. This is due to the fact that super glue forms thin, transparent layers which are not hard enough to remain in form. For gap and crack filling, you could use super epoxy glue instead.

Strong bonds on large surfaces with epoxy glue

Substrates: Metal, plastic, wood, fiberglass and composite materials

Epoxy is one of the strongest adhesives for industrial and consumer use. It is usually a two component system which is sold a set of resin and hardener packed separately. Prior to application, the two components must be mixed with each other on a surface like newspaper or cardboard. When the components are mixed, the chemical reaction that results in curing strats. Therefore, the epoxy glue must be applied soon after mixing. Note that also single comonent, easy to apply epoxies exist: these are sometimes called super epoxy glue, as the properties resemble those of super glue.

Epoxy curing time

Epoxy cures when two components are mixed with each other and a crosslinking process is started. Some epoxy products cure faster than others however, the rule of thumb is the longer the curing time the stronger the bond. Like super glue, epoxy should be let cure for 24 hours to reach its full strength. Use clamps or zip ties to create pressure and keep the parts in place until the adhesive is fully cured.

Where to use epoxy glues

Epoxy glues work the best where super glues don´t: large surfaces and crack and gap filling are common applications. Epoxy cures into a plastic like, transparent or opaque bond which is hard to beat it toughness. Therefore, epoxy beats super glue in strength also when bonding metal or wood. Common epoxy applications include shoe repairs, fixing handles (for example screwdrivers) and minor car repairs including disconnected mirrors and patch cracked lights.

Best epoxy products for home repairs

Some of the most popular epoxy glues for home repairs include Gorilla two part epoxy and Bob Smith quick-cure epoxy..

Gorilla 2 Part Epoxy, 5 Minute Set, .85 ounce Syringe, Clear

Gorilla 2 Part Epoxy, 5 Minute Set, .85 ounce Syringe, Clear

Bob Smith Industries BSI-201 Quik-Cure Epoxy (4.5 oz. Combined)

Bob Smith Industries BSI-201 Quik-Cure Epoxy (4.5 oz. Combined)

Wood adhesive for crafts and repairs

Substrates: wood

Wood is a porous material and requires a special adhesive which soaks into the pores. The wood glues are used for wood to wood bonding and it is common for crafts and home repairs. Wood glue is usually white and becomes transparent as it hardens. The glue should be applied by spreading an even amount on both surfaces that are about to be banded. After that the parts are connected and should be clamped together to ensure they stay in place till the glues is fully cured.

Curing wood glue

Like for super glue and epoxy, the longer the product is let cure, the stronger the bond. Many products are available and they all have specific curing times. Stick with the manufacturer’s advice to achieve the best result.

Get the best wood glue products

Titebond III ultimate wood glue and Gorilla wood glue are among the most popular wood glue products as they are easy to apply and form strong transparent bonds in wood to wood applications.

Titebond 1416 III Ultimate Wood Glue, 1-Gallon (2-(Pack))

Titebond 1416 III Ultimate Wood Glue, 1-Gallon (2-(Pack))

Gorilla 6231501 Gallon Glue, Natural Wood Color

Gorilla 6231501 Gallon Glue, Natural Wood Color

Silicone glue for watertight bonds

Substrates: Glass, plastic, metal and wood

Better known as sealant, silicone creates watertight bonds which resist chemicals and weather. Therefore, the best use of silicone glue is sealing there where adhesive properties are needed, too. Silicone glues cure to form a transparent or colored bond which remains flexible under any circumstances.

Uses of silicone glue

As mentioned, silicone glue is often used in applications that require both: sealing and bonding. Common uses of silicone glue in home repair projects include bathrooms and glass to glass connections such as in building and repairing aquariums. Silicone is also suitable for outdoor applications thanks to its superior water and weather resistance. Other uses are door frames, vinyl tops, roofs, shoes, toys and many more.

Best brands to work with

Permatex clear RTV silicone adhesive sealant and loctite clear silicone waterproof sealant are two products that work extremely well when silicone is the desired material.

Permatex 80050 Clear RTV Silicone Adhesive Sealant, 3 oz

Permatex 80050 Clear RTV Silicone Adhesive Sealant, 3 oz

Loctite Clear Silicone Waterproof Sealant 2.7-Ounce Tube (908570)

Loctite Clear Silicone Waterproof Sealant 2.7-Ounce Tube (908570)

different types of sealants used in a bathroom with blue towels

Different types of sealants for home improvements

Sealants are chemical materials which fill gaps and cracks as well as seal joints and seams. Most sealant types are waterproof and air tight. They may also have light adhesive properties, be chemical resistant and prevent growth of microorganisms like mold and mildew. But what is sealant used for? Sealants are commonly used by construction contractors, but they are also suitable for DIYers for small repairs and home improvement. Sealants can be used for example in bathrooms and kitchens as well as sealing and filling interior and exterior gaps and cracks. The different types of sealants for home include the following:

  • Acrylic
  • Butyl
  • Polysulfide
  • Polyurethane
  • Silicone
  • Water based latex

What are the different types of sealants for home?

The purpose of sealants is to prevent passage of liquids, gasses and fumes: often sealants are used to make joints air and watertight. There is no single type of sealant that is always the best choice: the sealant should rather be chosen based on the requirements of the substrate(s) and environment as well as the wished end result. There are several different types of sealants for home repairs and improvement as you will discover here below.

Red Devil 0646 Masonry and Concrete Acrylic Sealant Repair, Gray, 10.1 Oz Cartridge
Red Devil 0646 Masonry and Concrete Acrylic Sealant Repair, Gray, 10.1 Oz Cartridge

Acrylic sealants

When UV stable solutions are sought, acrylic sealants provide a considerable option. Due to their UV stability they are suitable especially for exterior applications. They are also not prone to shrinkage, which makes them a reliable solution. However, acrylic sealants for home repairs and improvement may be tricky to apply compared to other systems. They should not be used when significant movement is involved as they lack flexibility. The life expectancy of acrylic sealants varies from 5 to 10 years.

Acrylic sealants also exist as anaerobic systems. this means that they cure in the absence of oxygen. This type of acrylic sealants are used for securing screws and bolts (threadlocking).

Butyl sealants

Butyl sealants are sometimes preferred due to their rather low costs and ability to adhere to a wide range of substrates. Butyl sealants have stringy consistency which may make the application difficult. These sealants should not be used for demanding construction applications but other types of sealant solutions should be considered instead. they also lack the ability to accomodate shearing movement. Butyl sealants usually last from 5 to 10 years after which they must be replaced.

Polysulfide sealants

Boat Life Lifeseal Sealant Cartridge, Clear
Boat Life Lifeseal Sealant Cartridge, Clear

Polysulfide sealants are becoming more and more popular as they are flexible solutions which retain the joint elasticity even in low temperatures. They involve minimum shrinkage and are resistant to UV radiation, which enables exterior applications. These sealants are suitable even for underwater applications.

Polysulfide sealants are generally more expensive than comparable sealants for home. However, they have a life expectancy of 15 to 20 years which compensates on the initial price. Another factor to keep in mind is the rather high VOC content of polysulfide sealants. The use of these types of sealant systems requires additional safety measures for protection. These are commonly given by the manufacturer and added to the packaging of the product.

Polyurethane sealant solutions

A common go-to solution is polyurethane sealant. Not only are polyurethane sealants flexible but they also have strong adhesion and are abrasion and shear resistant. Polyurethane sealants for home adhere well to a wide range of substrates and they are easy to apply, as they require minimum surface preparation. Polyurtehane sealant belongs to the sealant types that exist as regular and low VOC solutions. As a rule of thumb: the higher the volatile organic compound, the more safety measures the sealant application requires.

Gorilla Clear 100 Percent Silicone Sealant Caulk, Waterproof and Mold & Mildew Resistant, 10 ounce Cartridge, Clear, (Pack of 1)
Gorilla Clear 100 Percent Silicone Sealant Caulk, Waterproof and Mold & Mildew Resistant, 10 ounce Cartridge, Clear, (Pack of 1)

Silicone sealants for home

The most common, but also the most expensive sealant for home repairs and improvement is silicone sealant. Silicone sealants are extremely flexible and durable: they have a life expectancy of 10 to 20 years depending on the product. Given the silicone sealant life expectancy, this type of sealant is among the most durable. These sealants can be modified for specific purposes: there are anti mold silicones, heat resistant sealants and food safe solutions. Silicone is a common material as bathroom sealant.

The downsides of silicone sealants include possible staining on some substrates, tendency to collect dirt and the need for primers in some cases. Despite the drawbacks, silicone sealants are the most common sealing systems, also in industrial applications.

Water based latex sealants

Water based latex sealants have gained their popularity by being easy and safe to apply as well as adhering to many different surfaces. Another advantage of water based latex sealants is that they are paintable, which contributes to the visual appeal of the end result. These sealants are especially suitable for very small gaps and voids where movement is minimal. Latex should not be used for waterproofing as it is prone to shrinkage and may pull away from the substrate creating gaps.

Properties to consider when choosing sealants for home

Flexibility and longevity are the two most important properties of sealants, however, there is more to it: some applications require hardness whereas others need strong adhesion. Below you can find some of the most important characteristics of different types of sealants for home.

  • Adhesion: some sealants adhere to the substrate(s) better than others. Always check the manufacturer’s advice on suitable substrates and provided adhesion data.
  • Cost: bear in mind that cheaper rarely means better. Invest in quality products as they are more flexible, easier to work with and last longer.
  • Durability: before choosing the sealants for home repairs or improvement consider the required durability of the seams. This usually affects the type of sealant you will need. For example polysulfide and silicone sealant life expectancy are among the highest.
  • Ease of application: try to choose for a sealant that is easy enough to apply. Incorrect or poor application may lead to failure of the seal.
  • Flexibility: the different types of sealants for home come in different rates of flexibility. Make sure the sealant you choose is flexible enough to accomodate the movement involved in your application. For instance polyuretahne sealant is an extremely flexible sealant solutions.
  • Hardness: sometimes the sealants are required of hardness. It is important to note that as the hardness increases, the flexibility decreases.
  • Resistance: consider the environment where the sealant will be applied. Do you require UV stability, chemical or mold resistance, or is heat resistance of high importance?
  • Staining: especially when working with silicone sealants some materials such as stone may be stained by the sealan. Make sure you choose a product designed for the substrate.
  • VOC content: the VOC content (volatile organic compound) refers to the toxicity of the product. The sealants for DIYers generally have lower VOC content than industrial systems. However, for example polysulfide sealants have a higher VOC content and therefore, safety measure must be taken during application.
a spring mattress kept together by mattress adhesive

The need for mattress adhesive is greater than ever

Mattress adhesive plays an important role in the mattress and bed making industry. The glue is responsible for keeping the different layers of mattresses together by bonding materials that are under the cover. Mattress adhesive can be used for instance for toppers, pocket spring and sandwich mattresses as well as open and closed cell foam mattresses, 7 zone mattresses and gel and memory foam mattresses.

The mattress and bed making industry is currently experiencing changes in regards of materials and material quality: more and more foams are used to make mattresses, and the need for efficient solutions is becoming paramount. Therefore, the mattress adhesives market is shifting towards more sustainable solutions such as hot melt glues and advanced water based adhesives. At the same time the requirements and need for mattress glue are greater than ever: the finished products must be long lasting, well ventilated, efficient to pack and transport as well as  easy to clean and store without compensation on the quality.

Here you will find the different types of adhesives for mattresses, their advantages and disadvantages as well as application methods that make the process superior.

The right mattress glue boosts efficiency

Mattress adhesive brings along great advantages, not only due to its properties, but also the variety of possible application methods and equipment that can be customized to become an integral part of the production process. Once the adhesive application is integrated into the process, the overall efficiency improves regarding both cost and time in production, packaging, storing and transport.

The mattress adhesive application  methods include rolling, spraying and beads. All these methods can be realized manually, semi automatically or automatically. For all these application methods to be optimal, proper implementation and training are required. Manufacturers of mattress adhesives provide products, suitable equipment and training to guarantee you the most efficiency.

New technologies allow for more and more efficient systems:

  • Plug-and-play easy spray systems: an application process can be given a boost by using an easy to use spray system. These are often fully mobile and can be used in any location as long as compressed air connection is available. All you need to do is plug in the system and start spraying the mattress glue. Beds are ready remarkably faster when this method is used.
  • Zero overspray systems: the development in transfer efficiency has resulted in zero overspray systems which represent 100% transfer efficiency. This means that all the adhesives for mattresses applied will be used, and none will be lost. These systems are enabled by the right combination of mattress adhesive and the right advanced application method.
  • Immediately curing products: water based mattress adhesive systems that cure immediately, through forced curing process, remarkably improve process efficiency. The zero curing time allows for an uninterrupted flow of adhesive application, product processing and packaging. This allows for improved cost and time efficiency as well as controlled processes throughout the production without compromising to quality. This not only improves the mattress assembly process but thanks to this glue beds are generally produced faster.

The 3 types of adhesives for mattresses

Mattress adhesive is used in bonding foams, pocket coil assemblies, fabrics and fibers. It is crucial that the mattress glue is non-yellowing, durable, flexible as well as easy and fast to apply so that it does not affect the looks of the mattress, allows for transport and storing, and optimizes processes while resulting in long lasting products. The wished result can be achieved by one of three mattress adhesive systems which bond for example cotton, coconut fiber, foams and non woven materials.   

1. Solvent based mattress glue solutions

The most traditional form of mattress adhesives are solvent based systems. These systems provide strong bonds, generally stronger than water based mattress glues. They can be applied by roll coating, spray or beads and dots.

The disadvantage of solvent born mattress adhesives is that they tend to release solvent fumes and adhesive residue in the air as they set when the solvent evaporates. Nevertheless, the new technologies allow for more user friendly systems where the share of solid parts is higher. This results in less solvent in the product as well as reduces the amount of product needed to complete the application.

2. Waterborne mattress adhesives

white mattress with mattress adhesive
Water based mattress adhesive results in environmentally friendly products.

Water based adhesives are a step towards more sustainable bonding in the mattress industry. They do not form as strong bonds as their solvent based alternatives, but that is no problem, for a mattress adhesive does not necessarily need to be strong, as long as it is, and remains, flexible and odorless. Also these systems are applicable by spray, beads and dots as well as roll coating.

The great advantage of waterborne mattress adhesive is that it is environmentally friendly, releasing only water while setting by evaporation. The evaporation process, however, generally takes longer than when working with solvent containing products. If the longer setting time is not taken into consideration, the water may remain in the mattress and encourage mold forming once packed in plastic. Fortunately, the development of adhesive technology makes it possible to let the water based mattress adhesives cure faster and minimize overspray.

3. Hot melt mattress adhesive

The newest, and most efficient mattress adhesive on the market is hot melt which is applied with hot air and sets as the heat dissipates. Hot melt is the mattress glue with the fastest curing process and least risks as it involves neither solvents nor water thanks to its 100% solid consistency.

Hot melt glues have rapid initial tack which allows for more efficient processes and requires less mattress adhesives. The only downside of mattresses that use hot melt, is that they may make a cracking noise when the adhesive is dry. However, the continuous development and innovation are removing this disadvantage.

Hot melt adhesives for mattresses are usually applied as spray regardless whether they are a one or two component systems. There are also rollable formulations of hot melt mattress adhesives made possible by reducing the solid share to about 75%.  

Standards and certificates for mattress adhesives

As durability, comfort and safety are key factors in mattress production and the finished products, many mattress adhesives are certified according to standards set by national and international standardization bodies. Below you can find examples of certificates relevant to mattress glues. These are recognized throughout the bed industry.

  • TÜV Rheinland provides  inspection services, testing and certifying to assess products and manufacturing processes regarding safety and sustainability.
  • Eco Passport can be achieved for textiles when two stages of testing are done. The Stage I Eco Passport tests are run according to OEKO-TEX® Restricted Substances List and Manufacturing Restricted Substances List. Stage II includes analytical verification of products in OEKO-TEX® laboratories. The Eco Passport means that the mattress adhesive is suitable for use in sustainable production of human ecologically optimized textiles.
  • GB18583-2008 is the Chinese standard for Indoor Decorating and Refurbishing Materials – Limit of Harmful Substances of Adhesives. Testing according to the Chinese standard is especially relevant for products that are targeted to the Asian market.
  • GREENGUARD Gold Certified ® offers criteria for safety factors, rather strict by nature. The factors assess the product´s safety regarding sensitive individuals such as children and elderly. The certification also insures that the products are safe to use in environments such as schools and healthcare establishments. It is referenced by both The Collaborative for High Performance Schools (CHPS) and the Leadership in Energy and Environmental Design (LEED) Building Rating System.

Find the right adhesives for mattresses and improve efficiency

If you are in need of a durable and efficient adhesives for mattresses, do not hesitate to contact us. Your enquiry with us will end up to our mattress adhesive specialists who are happy to assist you in finding the right system and application method as well as making mattress adhesives application an integral part of your production process. Get in touch, and maximize efficiency.

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2k epoxy adhesives in a tube

Epoxy adhesive – the most used industrial adhesive

Epoxy adhesives are by far the most common industrial adhesives and probably the most versatile structural adhesives. The popularity of epoxy adhesive is not the least due to the extreme toughness of the cured product nor their incredible ability to adhere to a wide range of materials. Epoxy resin adhesive systems are also easy to modify to make them meet the unique property needs of every individual project.

Epoxy adhesives are realized using different epoxy adhesive resin types which define the fundamental properties of the adhesive. The most suitable and strongest epoxy for specific application is usually determined by looking at the resin: a heat proof epoxy resin is the best when high temperature resistance is required where as a flexible epoxy resin is the go to solution when movement may be involved. Here yoy can find the general benefits of epoxy resin adhesives as well as the most common epoxy resin types and some epoxy adhesive applications.

What is so special about epoxy adhesives?

The presence of epoxy groups in the chemical formulations of the adhesives grants them several advantages. Epoxy resin adhesive can be modified and given desired properties rather easily, but all epoxy adhesives share some characteristics including:

  • Chemical resistance: generally, all epoxy resins resist chemical exposure better than most alternatives. With modification epoxy adhesives can even withstand total immersion in harsh chemicals.
  • Heat resistance: due to the chemical composition of epoxy, the adhesives are heat resistant by nature. Also a property that can be enhanced by modifying the formulation. Usually, epoxy adhesives are heat resistant up to 200°C (390°F). However, also heat proof epoxy resin types exist which withstand even higher temperatures.
  • Durability and final strength: once cured, the epoxy bonds are among the strongest in industrial applications: they even hold the truck lift world record using adhesive, having lifted a 17, 500 kilogram truck. They also retain stability over a long period of time. Industrial epoxy adhesive systems that use various resins are among the strongest epoxy systems.
  • Electrical properties: one of the desired properties of epoxy resin adhesive is its excellent electrical insulation which makes it suitable for applications like printed circuit boards.
  • Watertightness: probably the most well known property of epoxy adhesives. Not only do they create strong bonds, but also effectively seal and make joints and gaps watertight.

1 compoonent and 2K epoxy resin adhesive

Epoxy adhesives exist in one and two component glue systems, which both form extremely strong bonds, but differ from each other by curing process and final properties as well as applications. 2K epoxy resin adhesive is generally tougher than single component systems.

2K epoxy glue

Mixing two component epoxy adhesives on green surface
The 2K epoxy resin adhesives require mixing of the two components prior to application. Curing of epoxy adhesives is triggered as the components react with each other.

The two component epoxy resin adhesives are greater in versatility, as they are used in all market segments. They are slightly more complex to process, as the two components, resin and catalyst, must be mixed with each other, and the worklife is limited from a few minutes to a couple of hours depending on the industrial epoxy adhesive formulations. These 2K epoxy resin adhesives cure in ambient temperature, but the process can be sped up by applying heat or an external source of energy such as UV light depending on the formulation. Generally, the epoxy adhesives cure to the toughest bonds when the curing period has been the longest.

The major advantage of 2K epoxy glue solutions is that they adhere to almost any surface including wood, metals, plastics, ceramics and various types of rubber. They also are resistant to physical and chemical influences including heat resistance to 95° to 200°C (200°F to 390°F).

Single component epoxy glues

One component epoxy resin adhesives are easy to process as they do not require mixing unlike 2K epoxy glue. They usually have a paste-like consistency which makes them ideal for application by trowel or extrusion by beads. These adhesives cure in elevated temperature between 120° and 175°C (250° and 350°F) depending on the formulation. The single component heat cure adhesive systems fill and seal gaps efficiently, particularly between metal surfaces.

One part epoxy adhesives also appear in a form of heat curing film adhesive. The film adhesives are the best applied on large areas for bonding or laminating purposes. These films are found for example in the aerospace industry in assembly compounds. The one part epoxy resins adhesives are also common as construction epoxy adhesive which can be applied for instance when laying tiles.

5 common types of epoxy resin adhesive

Epoxy glue is not simply just one and two component adhesives, but many formulations exist depending on the resin, catalyst, modifiers and additives. The most important ingredient that gives the system most of its properties is the epoxy adhesive resin. It is also possible to use a combination of resins in order to guarantee the best possible solution. Here we will take a closer look at the five most common epoxy resins used in adhesives. In case you require any additional information on these or other types of epoxies, contact us and let us find the solution that benefits your application the most.

1. DGEBA epoxy resin

Diglycidyl ether of bisphenol A (BPA), better known as DGEBA epoxy, is the oldest epoxy resin, and by far the most important in epoxy adhesive formulations, not the least due to its relatively low cost of raw materials. Additionally, this resin is compatible with a wide range of catalysts allowing for a broad selection of properties to be created. The industrial epoxy adhesive systems using DGEBA epoxy, cure either in room temperature or with additional heat.

DGEBA epoxy resin exists as low molecular weight liquids, high molecular weight semi solids and solids as well as brominated resins. The latter are used primarily for application requiring ignition resistance. Therefore, brominated resins are common for example in circuit boards and other applications where flame retardance is needed.

2. Epoxy novolac adhesives

Epoxy novolac adhesives are best known as the most chemical resistant and high temperature resistant epoxies. They also have better adhesion than the BPA epoxies. In order to develop these properties to their best, the epoxy novolac must be cured in a high temperature. When cured in room temperature, the properties that can be achieved are similar to the ones of DGEBA epoxy adhesives. The length cycle of the curing process significantly affects the thermal stability of the cured bond.

Epoxy novolac resins are generally complex to process due to their high viscosity. Low viscosity alternatives have recently been developed in order to ease the processing. However, these products tend to have lower epoxy resin content. Whatever the case, epopxy novolac is almost predominantly a 2K epoxy glue.

3. Flexible epoxy resin glues

Epoxy glues and adhesives are generally not known for their flexibility. However, long chain aliphatic epoxy resins make it possible to add flexibility to the properties of epoxy adhesives. Nevertheless, the addition of this flexible epoxy resin compromises on toughness of the glue. Therefore, flexible epoxy resins are generally not used alone but rather mixed as modifiers with other epoxies to create a tougher and stronger yet flexible solution. When the resin content comprises of aliphatic epoxy for 10-30%, a required level of flexibility can be achieved without remarkably influencing other properties. These are the best flexible epoxy adhesive systems.

Flexible epoxy resin adhesives are used for instance for laminating safety glass, dampening vibration and sound as well as encapsulating electrical components and other delicate components that require thermal cycling.

4. Waterborne epoxy adhesives

By nature, epoxies are hydrophobic, thus not dispersible in water. Water dispersibility can, nonetheless, be conveyed to epoxies in two ways: chemical modification or emulsification. The latter is primarily used for resins in waterborne epoxy adhesives and done by separating the water from the resin with a surfactant. The choice of the surfactant and processing parameters determine the mechanical and chemical stability of the adhesive.

5. Epoxy acrylate resins

When formulating adhesives, two types of epoxy acrylate resins are used: vinyl ester and a special resin for radiation curing. These resins act more like polyester resins despite of being epoxies. They are easy to process, cure fast at room temperature and can use peroxides as the curing agent. In adhesives, these epoxy resins create lower viscosity, more flexibility and better wetting characteristics than conventional DEGBA epoxies. However, they do shrink more than any other epoxy adhesive while curing.

The epoxy acrylate resins can also be cured by radiation from an external source of energy such ultraviolet (UV) or electron beam (EB). These epoxy resin adhesives are generally low in viscosity and high in vapor pressure.

Examples of epoxy adhesive applications

As epoxy glue is a versatile product that exists as many formulations, the uses of the different types are nearly endless. Here below you can find some examples of tepoxy adhesive applications.

  • Chemical and biochemical industry: due to its outstanding chemical resistance, epoxy adhesives are common in applications that involve harsh chemicals. Especially epoxy novolac based formulations are used in tanks and other means to store chemicals.
  • Automotive industry: the strength of epoxy is also needed in the automotive industry where adhesives are replacing conventional fasteners and welded bonds, as they are remarkably lighter in weight. Also flexible epoxy resin glue is common for damping sound and vibration.
  • Aerospace: the aerospace industry uses epoxy adhesives as one component films and 2K epoxy glue systems for various applications. For example helicopter rotor baldes are bonded with epoxy glues due to the adhesives´ extreme strength and mechanical stability.
  • Marine: as epoxies form watertight bonds and are resistant to salt water, they are ideal for marine environments.
  • Construction: epoxy adhesive is also used in construction for example for repairing floors and tiles. The adhesives are resistant against the elements and therefore, suitable also for outdoor applications. Next to being an industrial adhesive, construction epoxy adhesive is also popular among DIYers.

Tip: for what ever you are using epoxy adhesive, research shows that proper storage of the glue can remarkably improve efficiency.

Find the epoxy adhesive that is a perfect match to your project

As we have now discovered, epoxy glue is not simply one type of adhesive, but covers a wide variety of formulations which all have their advantages. In case you are looking for the best possible industrial epoxy adhesive for your project, contact us and let our experts connect you with the most suitable epoxy resin adhesive.

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foam bonding adhesive needed for stack of foam

Gluing foam with foam bonding adhesives

Many industries deal with foam bonding as a part of manufacturing and construction processes. Foam bonding refers to forming bonds between multiple foams or foams and other materials. This is realized by applying foam bonding adhesives or glues which create bonds foam to foam or foam to other materials such as metals, plastics, wood and fabric.

Industries, where foam bonding adhesives are applied include for instance upholstery in furniture making, mattress and pillow manufacturing as well as seating in vehicle manufacturing. In this article we will take a closer look at the different types of foam adhesive as well as the foam processing applications they make possible.

Different types of foam adhesive systems

Every foam processing application is unique and requires a specific foam bonding adhesive. The choice of what adhesive to use for foam should be based on the product requirements, the application method and the overall process. Foam glue can remarkably improve efficiency when the right combination of these factors is found. The foam adhesives are suitable for batch, unit and mass production.

Here the types of foam bonding adhesives are introduced based on the different chemistries enabling them.

Water based adhesive for foam

Description: Water based adhesives are free of solvents and cure when the water evaporates. The curing process can also be forced leading to instant setting, making the application even faster and the overall process controllable. Fast curing water based adhesive for foam is especially beneficial for the mattress industry as it is safe and user friendly as well as allowing for increased production efficiency.

Application: The water based systems are versatile in terms of application methods: the most common method is spraying, but others such as beads and roll coating are possible in foam bonding applications. Water based foam glue is effective also as an adhesive for foam to foam.

Advantages: As these systems do not contain solvents, they are eco and user friendly releasing no odors at all. Therefore, they are suitable for example for applications in the mattress industry. They form bonds which may not be the greatest in strength, but more than suffice in flexibility. This type of flexible glue for foam is required for example in furniture upholstery.

Disadvantages: Compared to alternative systems, waterborne adhesives normally cure rather slowly due to the speed of water evaporation. There is also a possibility of water remaining in the product and resulting into mold during storing. However, new technologies allow for faster, even immediately, curing foam adhesive products where the aforementioned risks are reduced to minimum.

Solvent based foam adhesive

Description: Systems based on solvents are strong foam bonding adhesives that use solvent as the carrying agent. These adhesives set when the solvent evaporates. Solvent based systems are common as both foam to foam adhesive and foam to other materials glue.

Application: Solvent based foam adhesives can be applied by roll coating, spraying or beads and dots.

Advantages: Where strength is required of the bond, a solvent based foam bonding adhesive is at its best. Newer solvent based, high solids adhesives are efficient by requiring less product for forming bonds. Due to the higher solid share, these foam adhesives contain less solvent, which makes them more environemntally and user friendly.

Disadvantages: Solvent based products generally have a reputation of being harmful for the environment. This is due to the curing process during which solvent fumes and adhesive residue come free requiring the applicators to wear protective clothing and masks. The risk for air contamination is lower when using products with high solid share.

Hot melt adhesive for foam bonding

Description: Hot melt adhesive is the new comer among foam bonding adhesives. These 100% solid adhesives are applied using heat and they cure when the heat dissipates. Hot melts are especially popular in the bonding foam in mattresses.

Application: Hot melt glue is almost predominantly applied by spray unless the solid share is reduced to about 75% allowing for a liquid state of matter. The liquidized hot melt foam adhesives can be rolled onto the substrate.

Advantages: The 100% solid hot melt adhesives bond foam to various substrates without involving any solvents: they are also an excellent adhesive for foam to foam bonding. The hot melt adhesive for foam also enables efficient application methods, cures fast and saves time and money.

Disadvantages: One disadvantage associated with hot melt products is that, while being a very flexible glue for foam, they may make cracking noises when being bent or otherwise moved. Technologies have been developed to eliminate the problem especially for the markets, where this matters: mattresses and furniture.

Beneficial characteristics of foam bonding adhesive

Depending on whether the foam glue is applied to insulating foam, upholstery foam or other foams, there are a number of characteristics that make the adhesives suitable. These include:

Insulation foam adhesive on a wall
Foam bonding for insulation purposes may require the foam adhesive to be heat resistant.
  • Non yellowing: where the visual aspects play an important role, it is paramount that the foam adhesive does not start yellowing when time passes, but retains its original color.
    Example: adhesives for upholstery in furniture making.
  • Flexible: in many cases the foam is flexible, meaning that also the foam bonding adhesive must adapt to the foam’s movements without cracking.
    Example: upholstery and mattress foam bonding systems.
  • Heat resistant: some foam bonding glues are used for bonding acoustically or thermally insulating foam. These foam adhesives come into contact with heat that must not affect its adhesive properties.
    Example: glues for polyurethane foam used for heat insulation.
  • User friendly: foam bonding adhesives are applied to products that are in everyday use, also in environments where safety is crucial. In those cases absolute user friendliness is required of the adhesives.
    Example: adhesives and glues used in pillows, other foam processing applications for environments such as schools and hospitals.

Foam bonding adhesives can additionally have properties which are beneficial for the application process. These include the following:

  • Long open times: when the foam glue is applied to the substrate, it does not start curing immediately, leaving time to properly position the substrates to be bonded.
  • Instant curing: for some foam bonding applications it is crucial that the adhesive cures immediately and can be further processed and packaged without interruption.
  • Economical in use: many foam bonding adhesives are economic in use, yet some can even be applied with zero over spray meaning that none of the product is lost. Zero overspray systems are a result of the right combination of foam adhesive, application method and equipment.

For more information about the different properties and products, please contact us. Our specialists are happy to assist you deciding what adhesive to use for foam in order to improve your process and products.

Foam glue standards and certification

Foam bonding is a part of many industrial production processes resulting in goods meant for various environments. Some products must be certified according to national or international standards, to show their suitability for these environments. Here some of the relevant certificates are introduced.

  • TÜV Rheinland provides inspection services, testing and certifying to assess products and manufacturing processes regarding safety and sustainability.
  • GREENGUARD Gold Certified ® offers strict criteria for safety factors, that assess the product´s safety regarding sensitive individuals such as children and elderly. The certification insures that the products are safe to use in environments such as schools and healthcare establishments.
  • Eco Passport can be achieved for textiles. It guarantees that no OEKO-TEX® restricted substances are used in the products or manufacturing process and they are suitable for use in sustainable production of human ecologically optimized textiles.
  • GB18583-2008 is the Chinese standard for Indoor Decorating and Refurbishing Materials – Limit of Harmful Substances of Adhesives.

Find the best foam adhesive system for your project

The combination of foam bonding adhesive, application method and efficient processing are the key to successful foam converting. Our specialists are happy to assist you determining what adhesive to use for foam in your project. You can also get help in choosing the application method as well as implementing foam bonding to your production process. All you need to do is contact us for more information.

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adhesive chemistry raw materials, blue and green polymer resins

The basics of adhesive chemistry

Adhesive can be defined as any substance that can hold materials together in a functional way by separation resistant surface attachment. Adhesives can roughly be divided into natural adhesives and synthetic adhesives based on the raw materials they consist of. In synthetic adhesive chemistry, the most important ingredient is a polymer which for a great part defines the physical and mechanical properties of the adhesive. Polymers make up the most crucial adhesive raw materials, and exist as different types.

Adhesive chemistry affects adhesion

The chemistry behind adhesives essentially define the physical and mechanical properties of the systems including adhesion. In order to create long lasting bonds the adhesive chemistry must be matched with adherend and the surface. Therefore, the chemical composition has a creat impact on the adhesion. Four types of adhesion are recognized: absorption and surface reaction, mechanical interlocking, interdiffusion and electrostatic attraction. Most of these are relevant to adhesive adhesion and can be enabled by the chemical composition of the adhesive systems.

Types of adhesives and what they are made of

Adhesives can be divided into two groups defined by the nature of raw materials used to produce them. These groups are natural and synthetic adhesives.

Natural adhesives

Natural adhesives long dominated the adhesives market. Research implies that forms of natural adhesives were used as early as in the stone age. The current chemistry of today ́s natural adhesives uses raw materials based on animal or vegetable oils. Even though the use of natural adhesives experienced a decrease in the mid 20th century, especially wood and paper industries have been using them continuously. Some raw materials of natural adhesives have regained their position in the adhesives market, as they come from renewable sources. These adhesive raw materials can contribute to the development of biodegradable and biobased adhesives, which are likely to increase in popularity in the near future.

New adhesives are also continuously developed taking inspiration from natural adhesive materials. For instance, sticky snail trails and geckos have recently inspired a new super strong polymer.

Thermoplastic and thermoset synthetic adhesives

Synthetic adhesives were introduced as the stronger and easy to modify alternative for natural adhesives. The term synthetic refers to the raw materials having been developed in a laboratory setting. The synthetic adhesive chemistry is for a big part built on different polymers. The adhesive raw materials, the polymers exist as thermoplastic and thermoset variations.

  • Thermoplastic polymers: these polymers provide good adhesion and strong bonds at normal temperatures. Thermoplastics come in a solid form and are liquidized using heat. After curing, they can be brought back to liquid phase by applying high heat.
  • Thermoset polymers: thermosetting adhesive chemistry allows for irreversibly curing systems. These systems are known for their excellent chemical and heat resistance.

The most important adhesive raw materials in synthetic adhesives

In synthetic adhesives, the polymer is the key raw material. Not only does it impact the adhesive ́s reaction to heat, but defines other mechanical and physical properties such as chemical resistance, water resistance, load bearing capacity, abrasion resistance and flexibility.


The adhesive ingredients used in thermoplastic systems include nitrocellulose, polyvinyl acetate, vinyl acetate-ethylene copolymer, polypropylene, polyethylene, polyesters, acrylics, polyamides and cyanoacrylates. These polymers are also used in hot melt adhesives that provide a greener, solvent free option.

Thermosetting systems

Thermosetting adhesive chemistry uses raw materials such as epoxy, polyurethane, urea formaldehyde, unsaturated polyesters and phenol formaldehyde. Of the thermosetting systems adhesives that use epoxy resin are often considered the strongest. When a more flexible systems is sought, polyurethane makes up a considerable choice.

Elastomeric adhesives

Next to thermoplastic and thermoset adhesives, there are also elastomeric systems which can act as either of the previously mentioned polymer types depending on the adhesive ́s need for cross linking. Elastomeric adhesives are fast assembly, superior flexibility, easy to modify and versatile in uses. The adhesive raw materials for elastomeric systems include natural rubber, butyl rubber, butadiene rubber, silicone, neoprene, nitrile rubber and styrene butyl rubber.

Market developments affecting adhesive chemistry and raw materials

The main concern for the adhesive chemistry and raw materials market are the ever stricter local and international regulations regarding the chemicals industry. The regulations are set to limit the VOC (volatile organic compound) values of chemical products. Therefore, the use as well as export and import of high VOC adhesives has been restricted in some areas. Also the use of some polymers is likely to be subject to restrictions. The development of standards and regulations leads to innovative adhesive raw materials derived from more natural resources contributing to more sustainable systems.

Looking for an adhesive for your production process?

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adhesives for antennas in a rail vehicle

Attaching vehicle antennas with adhesive

Technological development has resulted in increasing requirements and desire for communication and network in vehicles such as trains, trucks and buses. In order to enable Wi-Fi connection, satellite positioning and train signalling, multiple transmitting and receiving antennas must be installed on the vehicles. These antennas are traditionally mounted on the vehicles using mechanical fasteners, however, also advanced adhesives can be used for the purpose. Adhesives offer a considerable alternative to fasteners as they prevent corrosion, resist UV radiation and reduce the weight of the vehicle while allowing for aerodynamic designs.

Adhesives for antennas vs. mechanical fasteners

In order to create a fully functioning network in vehicles for customers and operational purposes, antennas must be installed and mounted appropriately. Adhesives for antennas contribute a great deal to the efficiency of both the antenna and the vehicle as a whole. Some reasons for replacing mechanical fasteners in mounting antennas with glues include:

  • Lighter weight: adhesives are generally lighter in weight than mechanical fasteners. For example in a bus, replacing fasteners with glues can result to weight reduction of 80 Kg. Although the antennas do not require many fasteners, every bond that can be glued contributes to overall weight reduction.
  • Corrosion resistance: the mechanical fasteners are usually made of metal, which may promote corrosion. This is not the case with adhesives, in fact, they might even function as an anti corrosion barrier.
  • Aerodynamic design: glues are more flexible than fasteners when it comes to design freedom. Adhesives for antennas allow for neat design unlike most mechanical mountings which lack flexibility.
  • Lower cost: when it comes to costs, adhesives for vehicle antennas are beneficial as rather small amounts suffice, application is faster and the costs in general lower than those of mechanical fasteners.

Properties of adhesives for vehicle antennas

The antennas for buses, trains, trucks and other vehicles are usually installed on the rooftop of the vehicle. In some cases, they can also be hidden under non conductive fairing. However, most of the times the antennas are placed in plain sight subject to the elements. The desired characteristics of antenna adhesives include the following.

  • UV resistance: as the antennas are usually placed on rooftops of vehicles, also the adhesives holding them in place are exposed to the elements, also to UV radiation. Therefore, the adhesives for antennas are UV proof.
  • Conductivity: most antennas must be installed on an electrically conductive surface, usually a metal sheet, to maintain a magnetic field. If required, the adhesive can also be electrically conductive in order to prevent disturbance of the magnetic field.
  • Strong: it goes without saying that the adhesive must be strong enough to hold the antenna in its place even when high speed is involved.
  • Easy to apply (and disassemble): the service life of vehicles that require antennas is rather long: for example a train serves for 30 to 40 years on average. During their service life, new antennas are placed and outdated ones are replaced meaning that the adhesives that bond them to the vehicle must be easy and fast to apply. When replacement is expected, one can also choose for an adhesive that allows for disassembly.

Buying adhesives for vehicle antennas

Each antenna has different requirements regarding placement and means of fastening, as does each vehicle that requires an antenna. Contact us to find the best adhesive for the antennas in your vehicles and discover the possibilities for customized antenna adhesive systems.

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adhesives and sealants for light rail used in tram

Light rail and underground rails benefit from adhesives and sealants

Faster, safer, stronger and greener are all areas where light rail transit and underground trains (subway) must continuously improve. Adhesives and sealants for light rail and underground trains can help on all these areas as they increase comfort, make vehicles safer, for strong bonds and seams as well as offer sustainable alternatives for mechanical fasteners.

  • Faster: adhesives and sealants allow for faster assembly of light rail and underground trains but also contribute to the aerodynamic design and weight of the vehicles.
  • Safer: fire resistance, crash performance and vibration damping can all be increased by choosing the right adhesives and sealants for light rail and underground trains.
  • Stronger: the corrosion risk is remarkably reduced when glues and sealants are used as they prevent metal to metal contact, which makes the vehicles stronger. Adhesives and sealants also distribute the stress equally on the joint unlike mechanical fasteners such as screws.
  • Greener: adhesives and sealants reduce the weight of vehicles and allow for more aerodynamic designs, which reduces the power consumption. They also allow for more efficient manufacturing process requiring less resources.

Requirements for adhesives and sealants for light rail and underground trains

Light rail and underground trains are often subject to harsh environments as they are exposed to the elements and almost continuously on the move. Adhesives and sealants for light rail and underground trains must meet some requirements in order to guarantee durability and long service life. These include:

  • Weather resistance:especially the adhesives and sealants applied to the exterior surfaces of light rail and underground trains must be weather resistant. The must be water and air tight as well as UV resistant.
  • Electrical insulation:to guarantee safety on board, some bonds and seams must not conduct electricity. Some of them must be completely electrically insulating.
  • Shock resistance: as the ride may not always be the smoothest, the adhesives and sealants must be strong and flexible enough not to break for example during a rough rail switch. Adhesives and sealants also damp noise and vibration.

Note that light rail transit and underground trains additionally must meet several standards set for rail transport vehicles.

Adhesives and sealants for glazing and interior trim, and everything in between

Adhesives and sealants are used on every stage of the life span of light rail transit and underground trains from design and manufacturing to repairs and maintenance. The seams and bonds are required of improved safety, comfort and durability. Below we introduce some of the adhesive and sealants applications that take place in the manufacturing of light rail and underground trains.

adhesives and sealanst for light rail in dark interior trim
The adhesives and sealants for light rail and underground train floors and side panels are often polyurethane based systems.
  • Body structure: in the assembly of light rail and underground train body structures adhesives prevent corrosion, water ingress and standing water. The also damp noise and vibration. MS polymers as well as polyurethane and epoxy hybrids are common systems for body structures.
  • Roof bonding: the roofs of light rail and underground trains require flexible bonding and sealing solutions which are not affected by weather or temperature fluctuations. Usually fast curing two component systems are preferred.
  • Floors and side panels:durability and safety are among the most important requirements as regards vehicles. The ones for floors and side panels contribute to safety in crash situations and comfort during the ride. Elastic polyurethane adhesives are most commonly used.
  • Interior trim: the plastics and fabrics in interior trim require eco-friendly bonding solutions which contribute visual appeal and increase comfort. Although water based adhesives are common, hot melt adhesives are the most used solutions.
  • Direct glazing: sealants and adhesives for direct glazing contribute to process efficiency by providing fast curing and high initial tack. Silicone, MS polymer and polyurethane based systems are common.

Looking for the perfect solutions for light rail and underground trains?

The transport and vehicles industry is continuously developing and new adhesive and sealant solutions are frequently introduced. In case you are looking for sealing and bonding solutions to improve the product or the process, contact us and let us find the best adhesives and sealants for your light rail transit or underground trains.

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skin protectant adhesive

Skin protectant plays an important role in wound care

Skin protectant is a thin barrier or layer which can be applied to damaged skin or to skin which is at risk of damage. The protectant provides a protective layer on the skin and enhances the healing process as well as protects the wound. Most skin protectants can be used together with dressings.

In this article we focus on skin protectant systems and their uses in wound care and damage prevention.

About wound healing

Wound healing is a process where the damaged skin repairs itself. The process consists of four main phases being: blood clotting, inflammation, tissue growth and tissue remodelling. Not only is the healing process complex, but also fragile and vulnerable to infections and reinjuries. Therefore wound care and wound management play an important role in the healing process. Many products including adhesives dressings and skin protectants can be used to support the process.

When to use a skin protectant

A skin protectant is a spray or film barrier applied directly to damaged skin or skin likely to be injured if not protected. Skin protectants form a barrier between the skin and the external threats. It is impermeable to external fluids yet breathable. Skin protectants facilitate wound healing by creating an environment beneficial for the process: the wound can breath while at the same time moist healing conditions are retained.

Skin protectants are generally not suitable for deep wounds or second or third degree burns. However, they can be used in numerous other situations such as the following.

skin protectant not applied, irritaion by medical adhesives
Skin protectant can be applied to protect the skin from potential irritatation caused by medical adhesives.
  • Protection from medical adhesives: wound care often requires use of adhesives. Also those that are suitable for long term wear, usually up to 7 days. Some of these adhesives, especially acrylic-based, are known for higher risk of skin irritation. Skin protectants can be applied direct to skin, forming a sort of a primer for the adhesive in order to prevent irritation.
  • Peristomal skin damage: skin protectant can be applied to problem stomas which could otherwise contribute to fast skin erosion. The protective barriers are suitable when the stoma is in a difficult location or has high output.
  • Periwound skin damage: the skin around a wound (periwound skin) can become damaged especially when the wound produces large quantities of drainage, in other words is infected. The surrounding skin can be protected with an appropriate skin barrier which enhances the healing of the periwound skin. Note that most skin protectants cannot be applied directly to the wound.
  • Pressure ulcer/ injury: this refers to localized damage to skin and underlying tissue usually occurring on bony prominence or as a consequence of a medical device. Here a skin protectant can protect from moisture, friction and shear.

For more information on different types of skin protectans for various purposes, contact us. We are happy to help you out.

Benefits of skin protectants

Most skin protectant systems are made of special elastomeric polymers. Some of them are based on cyanoacrylate, the same ingredient that gives super glue its properties. Next to superior but non-irritant adhesion to skin, the protectants have plenty of other benefits.

  • Breathability: one of the most important criteria for wound healing is breathability. Therefore also skin protectants allow the wound or skin breath at all times.
  • Prevent cross contamination: most skin protectants are placed through a single use applicator, which prevents cross contamination.
  • Maintain moist healing environment: usually skin protectants that are meant for already damaged skin prevent drying and allow the skin remain moist.
  • Bioactivity: the most important benefit of innovative skin protectants is their bioactivity which means that they do not need to be removed but rather dissolve by themselves.

Looking for a supplier of skin protectants?

Skin protectants are suitable for several wound healing and prevention activities. In case you are curious about how the barriers can ease the pain of your patients and speed up the healing process, contact us and let us connect you with the industry-leading suppliers of skin protectants.

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dental wax, modeling wax used for making reconstruction

The many uses of dental wax

Dental wax makes an important material in dentistry as it provides benefits to making for example crowns, bridges, prostheses and dentures. The waxes are usually made of a combination of natural and synthetic wax and resins to guarantee the end product beneficial properties. Dental wax is mainly used in three situations:

  • Making molds that give the shape to to the final crowns and bridges;
  • Determining the required shape of crowns, dentures and prostheses;.
  • Making models that can be fitted and easily altered when needed.

The 3 types – Dental pattern, processing and impression wax

Dental wax is generally a thermoplastic system which appears in a solid form in room temperature. When the temperature rises, the wax takes a liquid phase. Waxes do not have an exact melting point, but they rather have a melting range.

Even though the waxes behave in a similar way in different temperatures, there are numerous different products for the different purposes and situations we described in the beginning. The table below shows the three types dental wax can be divided into as well as more specific products that fall under each group of waxes.

Type of dental waxProducts
Pattern waxInlay wax
Modeling wax
Milling wax
Base plates
Wax rim
Processing waxSticky wax
Utility wax
Boxing and beading wax
Block-out wax
Impression waxCorrective wax
Bite registration wax

1. Pattern wax

Pattern wax is the one that is used for making patterns and ensuring that they are the right ones for the patient. The use of dental pattern wax is close to the one of impression wax, however, here the single point is to capture and create the pattern for dental reconstruction. The products include inlay wax, milling wax, base plates and modeling wax.

dental modeling wax in a gypsum model
Base plate is a dental wax used for making patterns for prostheses.
  • Inlay wax: used for fabrication of occlusal surfaces of dentures, crowns and bridges. The latter are first made in inlay wax and later converted into metal and ceramic casting.
  • Milling wax: is used for milling and carving. These also exist as CAD/CAM milling waxes that support the computer aided processes.
  • Base plates: traditionally pink or read dental wax sheets which are used for preparing patterns for prostheses. These are also used in making metal dentures, only then the color is usually green allowing the possible markings in the metal to remain visible.
  • Modeling wax: dental modeling wax, also known as casting wax, is made for creating models of prostheses and bridges that can be fitted into the patient’s mouth and easily altered where needed. For CAD/CAM processes the wax is sometimes replaced by PMMA, a glass-like transparent plastic.

Need more information? If you would like to know more of any dental waxes or alternative products, please contact us. Our experts are determined to find the best possible solution for your needs.

2. Processing wax

Processing wax in dentistry refers to products used in making castings or during soldering. There are several types of processing waxes including boxing, sticky and utility waxes.

  • Sticky wax: extremely sticky when melted and it adheres well to metals and ceramic materials. Sticky wax is used for aligning fractured parts of dentures, aligning fixed partial dentures prior to soldering and holding two fractured pieces together until they can be repaired.
  • Boxing wax: a soft, pliable wax used for forming a wax box around an impression before it is poured with gypsum. Boxing wax comes in wax stripes which form a box with high enough edges to keep the liquid gypsum in place.
  • Block-out wax: a special wax for blocking out cavities and rough surfaces in cast metal denture preparation.

3. Impression wax

The dental impression wax is used for determining the required shape of crowns, dentures and prostheses in order to guarantee a perfectly fitting product that causes no discomfort to the patient. Wax can be used in two cases: when a new product is made and when an existing one must be altered for whatever reason. The waxes used are bite registration and corrective waxes.

  • Corrective wax: used to restore the selected area in edentulous patients mouths and reproduce the detail of mucous membrane.
  • Bite registration wax: used to record the relationship of the upper and lower teeth of patients. Dental wax sheets and sticks are the most common means of doing so.

Note that impressions can also be made using silicone based dental putty.

Find the dental wax best for your process and the patient

Dental wax is a versatile product and picking the right one is not always a one-off decision. That is why our experts are here to help you! Click on the contact button below and share your needs with us to guarantee the best possible solution.

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yellow dental putty impression material

Silicone based dental putty as an impression material

Making dental impressions is a major part of dentistry. Therefore, there are different materials developed for the purpose suitable for the process of making crowns, bridges, braces and prosthesis. The most common dental molds and cast materials cure irreversibly, meaning that once they are in solid phase, they cannot be taken back to the liquid putty form.

In this article we focus on the dental silicone putty impression material types, as they are by far the most common dental impression materials.

The 2 types of dental silicone putty impression material

As impressions are made in different ways and for various purposes, there are two main types of dental putty and wax that can be used as impression putty. The types are classified by the way they cure: condensation cure and addition cure silicone dental putty impression material. Both of these silicone impression matterials cure irreversibly. Note that these putty material types are not compatible with each other.

1. Condensation cure silicone impression putty

Condensation cure silicone dental impression putty cures using tin salts as catalyst. This dental impression material is the most economical and easiest to use option and often chosen for when elevated temperatures are not involved. Condensation cure silicone shrinks slightly when curing.

This dental impressions material capture the tiniest details of the surface and are often biodegradable making them environmentally friendly.

dental impression material, dental putty
Dental impression material putty is used to make molds and casts that help creating dental models, braces and reconstructions

2. Addition cure dental putty

The addition cure silicone putties are platinum catalyzed and they result in rubber like, more durable molds and casts as condensation silicones. They are also less sensitive to heat. These dental impression materials require careful mixing and application procedures. Due to the use of platinum as an ingredient and the longer processing times, addition cure silicone tends to be more expensive than condensation cure dental impression putty.

The most common type of addition cure putties is polyvinyl siloxane impression materials. These form durable and flexible dental molds and casts which resemble almost exactly the size before curing.

Would you like to know more about dental impression materials? Do not hesitate to contact us for assistance in finding the system you need.

What to consider when choosing the right dental putty

When choosing a dental impression material, it is of high importance to consider the application and manipulation phase, the patient (if applicable) and the purpose of the manipulated dental putty. Therefore, there is a list of factors to look at before the choice can be made.

  • Viscosity
  • Mixing time
  • Working time
  • Time in mouth
  • Setting time
  • Deformation under pressure
  • Elastic recovery
  • Total hardness

In need of a dental putty?

In case you are looking for a suitable dental impression putty, let us know. Our experts are happy to advise you making the right choice for your application, keeping in mind the patient, process and end result.

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laminated timber beams with adhesives for timber constructions

Ever-growing demand for adhesives for timber laminating

The construction industry is currently experiencing a shift towards wooden materials which are generally more sustainable than conventional construction materials such as steel and reinforced concrete. This trend brings adhesives for timber laminating into the picture: the right timber adhesive enables even high-rise buildings made of wood by allowing for extremely strong laminated timber which is as safe as other materials also in earthquake sensitive regions. The main benefit of laminating timber is that it makes wood as strong as concrete or steel but is much lighter in weight.

Adhesives for timber laminating are used in cross laminated timber (CLT) and glue laminated timber (glulam) which exist as I-beams, straight laminated beams, curved laminated beams and wall beams. The task of the lamination adhesive is to keep the different layers of the beams together. The beams enable stronger and lighter bearing structures than solid wood of same thickness.

Laminating timber enables high-rise buildings made of wood

The wood laminating adhesive market is currently experiencing rapid growth, as wood has become a more desired construction material. Even though wood is usually considered a fire sensitive material which is generally weaker than concrete and steel, timber laminating allows for beams that are strong enough as bearing structures are treated to increase their fire resistance.

Lately glulam and cross laminated timber have also become trendy materials in constructions of high-rise buildings. The tallest wooden tower is currently Mjøstårnet located nearby Oslo, Norway. The building is made entirely of wood and timber: glulam and CLT beams play an important role in the bearing structures of the tower.

Different types of adhesives for timber laminating

Timber laminating of structural wood beams such as cross laminated beams and glue laminated beams can be done with several different types of adhesives. Each type provides strong bonds and enhances the beams´ load bearing capacity. The choice between the types should be based on the type of wood, the environment´s requirements as well as the desired application method and most convenient curing process. If the timber has been treated with a preservative prior to laminating, the compatibility of the preservative and laminating adhesive must be verified.

Below we will describe three of the most common adhesive systems used for laminating construction timber. The types differ from each other by consistency and curing method, and they can be modified to meet specific requirements crucial for your application.

1. Melamine (urea) formaldehyde adhesives

Melamine formaldehyde (MF) and melamine urea formaldehyde (MUF) adhesives belong to the group of polycondensate adhesives which currently dominate the timber adhesives market. MF and MUF adhesives are multi component glues which require a hardener in order to set and cure. These timber laminating adhesives cure through the separation of water. The melamine based adhesives provide timber with colored glue lines which have enhanced water resistance. Additionally, especially MUF adhesives have natural resistance to fire and can, therefore, be used for timber laminating of beams even in demanding environments.

layers of laminated beam kept together by adhesives for timber constructions
Melamine based adhesives for timber laminating make sure the wood layers stick together.

The melamine (urea) formaldehyde adhesives are the most versatile glues for timber. They are designed for load bearing constructions, but are also applicable to other smaller structures.

MF and MUF adhesives contain formaldehyde which, in some cases, is a substance to be avoided due to emissions caused by it. Fortunately, today’s technology allows for highly sustainable melamine formaldehyde systems which emission rates are equal to the one of wood itself. These adhesives are currently not many in the market, however, the demand is growing rapidly. Might you want any additional information on low formaldehyde melamine based CLT and glulam adhesives, do not hesitate to contact us.

Uses next to glulam and CLT: multilayer boards, wall elements, finger jointed solid timber, Japanese laminate, solid wood applications and furniture.

2. Phenol Resorcinol formaldehyde adhesives

Also phenol resorcinol formaldehyde adhesives (PRF) cure by polycondensation and are multi component systems. PRF adhesives form dark colored glue lines which are extremely strong and resist both weather and water.

Phenol resorcinol formaldehyde adhesives are among the most common glues used for laminating timber in load bearing and non-load bearing constructions. As a conventional system, it is trusted by many manufacturers of wall beams, straight laminated beams and curved laminated beams (glulam).

Uses next to glulam and CLT: Japanese laminates and finger jointed solid timber

3. Laminating timber with polyurethane adhesives

Polyurethane (PUR) adhesive is a newer alternative to the formaldehyde containing conventional systems. The PUR adhesives are usually moisture curing (polyaddition), one component systems using the water in the wood structure to set and harden. This allows for fast curing in room temperature. Additionally, due to the fact that no hardener is needed, the adhesive does not require mixing, which makes the process more efficient and faster. Polyurethane wood laminating adhesives are also formaldehyde free, which makes them a more environmentally friendly choice than the alternatives.

Whereas PRF, MUF and MF adhesives can be brittle and stiff, PUR offers a more ductile solution which suits many timber laminating applications from contactless finger jointing to traditional bearing and non bearing structures.

Uses next to glulam and CLT: contactless finger jointing, wall elements, window and door scanting

Find the right adhesives for laminating timber

Choosing an adhesive for laminating timber is never a straightforward process whether you are looking for one for a new production line or a new one for an existing line. A multitude of factors must be considered, the efficiency and product durability being the most important ones. Therefore, in order to end up with the adhesive system most beneficial for your process and product, it is good to consult an expert. We at AdhesivePlatform are determined to provide you with all the necessary information and advice as well as forward your enquiry to our specialists to guarantee you the best possible adhesive for timber laminating.

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furniture adhesive in yellow chairs

Furniture adhesive for safety and sustainability

The furniture industry makes use of a great deal of adhesives which improve the production process and guarantee safety and suitability of the finished products. Furniture adhesive systems are used for creating bonds between fabrics, foams, wood, metals and plastics. As the variety of adhesives and application within the furniture industry is wide, this article focuses on adhesives used for bonding soft furniture and furniture upholstery including furniture for schools, hospitals, offices and airports as well as seats in vehicles such as trains and airplanes.

Beneficial properties of furniture adhesives

In soft furniture and furniture upholstery the task of the adhesive is to keep the furniture foam in place much like in the mattress industry. During the application it is crucial that the furniture glues do not penetrate the pores of the substrate but rather remain on the surface enabling strong bonds with other materials without affecting the properties of the substrates. Additionally the adhesive must be able to absorb great tension right after being applied. Most importantly, the right adhesive can improves overall efficiency by being fast and easy to apply.

Next to the properties required during the application, there are a number of characteristics a furniture adhesive should have, in order to support the quality of the finished products. These include:

furniture adhesive in red waiting room chairs
A furniture adhesive must contribute to the durability and efficiency of the finished products by being suitable for the materials, supporting environmentally friendliness, and lasting long.
  • Elasticity: as upholstery and soft furniture involve adhesives for soft and flexible surfaces, also the adhesive must remain elastic and not break due to movement of the material.
  • Invisibility / non-yellowing: the purpose of furniture adhesives is to bond materials together unnoticeably. Therefore, it is crucial that the systems retain their original color and do not turn yellow when the bonds get older.
  • Eco-friendliness: in the furniture manufacturing, sustainability is becoming more and more important. Therefore, also the products used during the process must contribute to reduced risk of environmental contamination.
  • Chemical resistance: furniture used in public areas, institutions and vehicles should be resistant to chemicals so that even intensive cleaning and aggressive substances do not affect them. Therefore, the adhesives must not be affected either.
  • Durability: the most important reason to use furniture glues is the durability and long life span they give to the products.

Bonding for furniture upholstery and soft furniture

Traditionally the furniture industry made use of solvent based strong adhesives. However, for decades the trend has been towards environmentally and user friendly products. Therefore, the most used furniture adhesives nowadays are either water based dispersion adhesives or hot melt glues.

  1. Waterborne dispersion adhesives: water based adhesives for furniture industry are environmentally friendly and solvent free. They cure by evaporation as the water in them leaves the system. The curing process can also be forced, which results in immediate curing saving time and making the process more controllable. They can be applied by spray, roll coating or beads and dots. Spray applications are by far the most common.  
  2. Hot melt furniture adhesives: hot melt glues are thermoplastics which are applied without using water or solvents. These systems are applied using heat and they cure as they cool down. Solvent free hot melt systems for furniture are applied predominantly by spray.

Note that some adhesives can be given additional properties or the existing ones can be enhanced by modifying the product with a solvent based solutions. These solutions can for instance make the bond stronger, increase the adhesive´s heat resistance and enhance the extent of water resistance of polyurethane adhesives. The possibilities to modify the furniture bonding solutions are becoming more and more important, since the demand for furniture is growing.

Certification of furniture glues products

Sustainability and safety as well as suitability for specific applications are of high importance for furniture and furniture adhesives. Along with these factors come the relevant certificates. Below you can find some examples of certificates that benefit furniture adhesives.

  • Eco Passport can be achieved for textiles in the furniture market. It guarantees that no OEKO-TEX® restricted substances are used in the products or manufacturing, and they are suitable for use in sustainable production of human ecologically optimized textiles.
  • TÜV Rheinland provides  inspection services, testing and certifying to assess products and manufacturing processes regarding safety and sustainability.
  • GREENGUARD Gold Certified ® offers strict criteria for safety factors that assess the product´s safety regarding sensitive individuals such as children and elderly. The certification insures that the furnitures is safe to use in environments such as schools and healthcare facilities.
  • GB18583-2008 is the Chinese standard for Indoor Decorating and Refurbishing Materials – Limit of Harmful Substances of Adhesives. This standard is especially relevant for furniture adhesives used in goods targeted at the Asian market.

Assistance & advice for finding the ideal furniture adhesive

Finding the right adhesive for furniture upholstery and soft furniture may be challenging due to the different types of foam materials that require bonding, and the complete production processes that should be made as efficient as possible. In case you require any additional information, advice on products or application, or training in furniture adhesives, do not hesitate to contact us. Our specialists are here to help you out!

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PVC bonding required for pipelines

Industrial PVC bonding systems for pipe installations

Next to polyethylene and polypropylene, polyvinyl chloride, PVC, belongs to the world’s most widely produced synthetic plastics. One of the most common uses of PVC plastics is in industrial pipeline installations, of which feeds range from potable water to aggressive chemicals.  As the use of PVC pipe installations is broad, so are the solutions for industrial PVC bonding. In this article, we will take a look at the different PVC materials and pipeline applications, as well as suitable PVC adhesive solutions for the different uses.

Industrial PVC bonding and properties of the adhesive for PVC

In industrial applications, PVC is most commonly used in pipeline installations such as disposal systems. The installation requires PVC bonding to create strong and watertight joints and seams, as well as fill in gaps and cracks. The applications of PVC adhesive glue include high pressure and drainage pipes, as well as potable and wastewater pipelines. Pressure joints and press fits commonly require these adhesives.

Depending on the application, the industrial adhesive systems should be:

  • Waterproof: it goes without saying that the adhesive bonding together two pieces of pipe containing liquids, should not let any of it through.
  • Chemical resistant: depending on the purpose of the installation, the PVC bonding should be resistant to the feed including all chemicals it may be exposed to. For example, the horticulture industry installations used for delivering fertilizers, must not let the fertilizer affect the pipes and bonds.
  • Resistant to high pressure and discharge: some industrial pipeline installations are used for delivering and discharging fluids in high-pressure conditions. Therefore, the PVC adhesives used in these, must not be affected by the process and vice versa.
  • Safe to use with potable water: many PVC pipelines are designed to deliver drinking water. Adhesives used for these pipes must comply with food and safety regulations to make sure no residue will end up in the potable water.

In case you have a PVC application that requires special property adhesives or sealants, contact us and share your project details to get tailored advice.

About applying PVC adhesive

The materials most commonly used in industrial pipeline installations are UPVC (unplasticized polyvinyl chloride), CPVC (chlorinated polyvinyl chloride) and ABS (acrylonitrile butadiene styrene). Each of the materials has their own properties and requirements regarding adhesives. However, there are also products that can be universally used for all three materials.

green pipes requiring pvc bonding
Before PVC bonding, the surface must be prepared properly to allow the adhesive for PVC to bond.

Below you can find some general information on applying PVC adhesives and preparing the substrate.

  • Surface preparation: a clean substrate is the foundation of successful PVC bonding. The substrate must be free of oils and grease before application. Many adhesives manufacturers also offer PVC cleaning agents which clean the substrate without damaging it. For example, acetone can be too strong a detergent and cause damage.
  • Protection: in general, PVC bonding involves materials which contain substances that may be hazardous to health when inhaled or touched. Therefore, it is advised to at least wear protective clothing, mask and gloves. Always see the manufacturer’s advice on required protection.
  • PVC primer: especially when working with solvent cement, a PVC primer may be needed to start the chemical reaction softening the PVC pipe and making it ready for the adhesive to adhere to.

Note: PVC bonding often takes place in critical parts of pipe installations, which is why it is paramount that the PVC adhesive glue used for the installation is certified according to relevant standards, as well as has a declaration of performance (DoP) provided by the manufacturer to guarantee performance.

Guarantee success for your PVC bonding project

To make sure your PVC bonding project is a success, it may come in handy to turn to a specialist. Do not hesitate to contact us for any questions or inquiries you may have regarding PVC bonding products, application, or training. Our experts are happy to help you achieve the best possible results in PVC bonding.

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chemical resistant sealant in tanks

About chemical resistant sealant and adhesive solutions

Chemicals such as acids, fuels and alkalis are present in many environments for example in the  petrochemical, biochemical and food processing industries. In these environments it is of high importance that the chemicals being processed or worked with do not get to contaminate the soil and do not contribute to contamination of other products. Therefore, products such as chemical resistant sealant, adhesive and coating are necessary for example in chemical processing plants, chemical piping and tanks as well as sewer systems.

In this article we will take a closer look at defining the right chemical resistant sealants, adhesives or coatings based on the operating environment´s requirements. Here you will also find the common certificates required of chemically resistant seals and bonds as well as application possibilities.

Application requiring chemical resistant bonding and sealing

The petrochemical and biochemical industries require 100% watertight and liquid proof systems that resist a wide range of chemicals. The chemical resistant sealants, adhesives and other products are suitable for many applications. Here we will look closer at four of them:

1. Sealing liquid repellent and impermeable floors

Locations where hazardous chemicals are used or processed require a flooring system that is immune to the chemicals and prevents soil contamination. Tank storage areas, gas stations and chemical processing plants as well as battery rooms. The flooring further requires sealants to make sure nothing gets pass the floor. Both liquid repellent and impermeable floors can be sealed.

Depending on the floor type, the chemical resistant sealant for floors is used in the seams, floor joints and joints between walls and floors to prevent soil contamination and sacking of the floor. Not only do these seals protect the environment but also contribute to the area’s aesthetics: some sealants are available in different colors whereas others can be painted to reach the wished end result.

Example solutions: permanently elastic MS polymer systems, self leveling one component MS polymer systems, 2K self leveling crack fillers on epoxy polysulfide basis (sealing and repair of concrete floors).

2. Chemical resistant sealants for storage tanks, basins and silos

chemical resistant sealant in silos
Silos especially in the food processing industry require chemical resistant sealant systems that do not affect the stored substance.

Tanks, silos and basins that store liquids or solids must be absolutely leak-proof. This is where sealants and adhesives come into play. Depending on what is stored in the container, the sealant must be chemical resistant, sometimes even for aggressive fluids and gases. Chemical and microorganism resistance is especially important for tanks used for storing waste water or compostable waste where fungi and bacteria may grow. Generally it is also paramount that no thermal or mechanical stress gets to affect the seals.

It is also crucial, especially in the food processing industry, that the sealant does not have an influence on the substance stored. Therefore, one should opt for products that are HACCP or ISEGA certified. More information on certification can be found later on in this article.

Example solutions: permanently elastic one component MS polymer based sealants, MS polymer sealants that are resistant to acids, fumes and other hazardous substances, polysulfide based 2K coatings that bridge cracks, remain elastic and are UV stable, thixotropic 2K polysulfide and epoxy polysulfide coatings. In case you need more information on sealing and bonding tanks, silos and basins, contact us and get tailored advice.

3. Bonding and sealing wells, sewers and separators

Next to tanks, silos and basins, other application where leakages are a no-go include wells, sewer systems and separators. A chemical resistant sealant can be used for example in pipes and separators which store or pass on liquids such as waste water.

These pipes and separators are usually protected with a coating, and the joints and seams are sealed with an appropriate sealant. The materials that are sealed with these products include concrete surfaces and PVC pipe installations. The proper sealing of the joints and seams is extremely important in preventing soil contamination and damage caused by leakages.

Example solutions: thixotropic 2K epoxy polysulfide coatings that bridge cracks and retain their strength when subject to severe temperature fluctuation.

4. Tricky seals in the chemical industry

Some applications of chemical resistant sealing and bonding systems need additional attention: these include for instance bridging joints and other seals especially in the chemical industry. The applications cover high movement and expansion joints, impermeable seals for floors that must bear heavy mechanical loads as well as membranes for under machinery and chemical installations.

Example solutions: highly flexible chemical resistant sealants, membrane seals, 2K self leveling polysulfide based sealants (for horizontal or vertical joints).

Guarantee the right chemical resistant sealant or adhesive

When choosing suitable materials for sealing and bonding, chemical resistance should get a great deal of the attention. It is not enough to know which chemicals are present in the environment, but the process includes more detailed factors as shown below.

  • Chemicals and concentration: you should be aware of which chemicals are present in the environment and may affect the seal or bond. It is also important to know the concentration of the chemicals as it can be crucial for defining the right system.
  • Exposure and time: when defining exposure, think of everything from occasional splashes to continuous immersion. Sometimes a chemical resistant sealant is resistant to immersion in the chemical, but not for immersion lasting forever.
  • Temperature and mechanical load: thermal and mechanical loads may affect the chemical resistant product´s resistance. Usually the resistance weakens in elevated temperatures and under high mechanical stress.

Note that the more resistant the system, the higher the costs. However, a chemical resistant system is an investment that may save you from a lot of future maintenance and repair costs caused by malfunction.

CE and ISEGA – certified chemical resistant sealants

When it comes to chemical resistant sealing and bonding, the products can have several certificates and the must meet international and national standards. The ISEGA is the most important certificate that all products used in food processing should have. The CE marking, in turn, indicates compliance to crucial European standards.  

  1. ISEGA: assurance that products are safe to be used in the preparation, processing, treatment, packing, transport and distribution of food. These products must have the lowest risk of contamination, and other hazards. Therefore, the ISEGA certification, together with HACCP, is crucial especially for chemical resistant sealant and adhesive products used in the food processing industry.
  2. CE marking: the CE mark shows that the product complies with directives and laws set by the European Union. For chemical resistant sealant products the CE marking is often based on two European standards: EN 14188, hot and cold applied sealants, and EN 15651, sealants for non-structural use in joints in buildings and pedestrian walkways.

Seal your project with chemical resistance

Is your production plant, storage area, tank, silo or sewer system in need of chemical resistant sealing, bonding or coating? Feel free to contact us for more information, custom advice, suitable products and training in the field of chemical resistant sealant and adhesive products. Our experts are happy to help with any enquiry you may have. Since January 2021, we have expanded our services to offer our assistance with coating issues. We offer you this service completely free of charge.

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