Heat seal applications

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Heat sealing refers to the combining of two substrates via heat and pressure. This process is predominantly used for lidding applications, where paper, aluminium or plastic lids are bound to paper or plastic food containers, for example, in the packaging of dairy products; for plastic trays for convenience food and meat and for instant noodle cups. Heat seals are also used for the sealing of medical packaging. Heat seal adhesives are in most cases non-reactive solvent-based products or based on acrylic dispersions, which are applied and dried on one or both substrates that will later be sealed together. In some cases, non-reactive hotmelts can also be used as heat seals.

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