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Hot melt film
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Dongguan Green TPU Co.,Ltd.
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What is hot melt adhesive film?
When it comes to "hot melt adhesive film", many people still don't understand what it is; but when it comes to "glue", almost everyone knows that there are many types of glue, such as double-sided adhesive, sponge adhesive, glue and so on. Mainly used for pasting. The Hot melt adhesive film is a kind of "glue", which is a film product with or without release paper, which can be conveniently operated continuously or intermittently. It can be widely used in the bonding of various fabrics, papers, polymer materials and metals.
2022-04-08
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What is hot melt adhesive film?

When it comes to "hot melt adhesive film", many people still don't understand what it is; but when it comes to "glue", almost everyone knows that there are many types of glue, such as double-sided adhesive, sponge adhesive, glue and so on. Mainly used for pasting. The  Hot melt adhesive film is a kind of "glue", which is a film product with or without release paper, which can be conveniently operated continuously or intermittently. It can be widely used in the bonding of various fabrics, papers, polymer materials and metals.

At present, hot melt adhesive films are mainly used in packaging, shoe materials, clothing, electronics, home furnishing, automobile industry and other fields. There are many kinds of very complex applications that are either mature or immature.

For example, in the field of shoe materials,  Hot melt adhesive film is mainly used to replace traditional non-environmentally friendly yellow glue, white glue, composite uppers, insoles, shoe linings and other components;

For example, in the field of clothing,  Hot melt adhesive film is mainly used for clothing lining, seamless clothing, reflective clothing and other multi-functional clothing.

For example, in the automotive field, due to the strict control of volatiles in automotive interiors, it is necessary to use  Hot melt adhesive films to laminate car roofs, car seats, car floor mats and other components.

TPU Hot melt adhesive film

TPU Hot melt adhesive film is also called TPU hot melt adhesive double-sided adhesive, the main component is polyurethane. TPU Hot melt adhesive film has good elasticity and excellent washability, and is the most popular hot melt adhesive film. There are three types of TPU hot melt adhesive films: high temperature high elasticity, medium temperature elasticity and low temperature inelasticity. Among them, the high temperature and high elasticity TPU Hot melt adhesive film is transparent in color and excellent in elasticity, and is mainly used in various seamless underwear fields. The medium temperature color is transparent and elastic; the low temperature color is a white matte surface with no elasticity. TPU Hot melt adhesive film can be used in various clothing, shoes and hats, daily necessities, industrial products, etc. It has good adhesion to various textiles, leather, film, sponge, rubber and other materials.

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TPU hot melt adhesive film vs anaerobic adhesive: "Scene flexibility" difference in automotive interior bonding
2025-09-11
​From the perspective of curing conditions, TPU hot melt adhesive film does not need to rely on special environments, while anaerobic adhesives are severely restricted by "auerobicity". The curing principle of anaerobic glue is to undergo polymerization under conditions of lack of oxygen and catalyzed by metal ions (such as iron and copper). If it is in an environment where air circulation or metal substrates are not available, the curing speed will be greatly slowed down or even unable to cure. In automotive interiors, most bonding scenarios are "open" (such as bonding the door panel skin to PP substrate, and the ceiling fabric to the sponge), the air can freely contact the bonding surface, and the substrate is mostly non-metallic (PP, ABS, fabric, etc.), lacking metal ion catalysis, and additional catalyst is required when using anaerobic glue, and the curing time is as long as several hours, which is difficult to meet the needs of industrial production. The TPU hot melt adhesive film only needs to be melted by heating (120-160℃) and can be cured after pressurization and cooling. It does not need to rely on the ambient oxygen concentration or the base material. It can be cured stably in open or closed bonding scenarios, and the curing time only takes a few dozen seconds to a few minutes, adapting to the fast-paced needs of the interior production line.
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