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GreenTPU talks about TPU hot melt adhesive film
TPU hot melt adhesive film is a kind of glue. This is an environmentally friendly adhesive.
2022-05-03
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GreenTPU talks about TPU hot melt adhesive film

TPU hot melt adhesive film is a kind of glue. This is an environmentally friendly adhesive. TPU hot melt adhesive film has good washing resistance and dry cleaning resistance, high temperature resistance of 110 degrees, low temperature resistance of minus 40 degrees, and good tensile properties. Good adhesion to textiles, TPU film, polyurethane sponge, rubber and other materials. The raw material of TPU hot melt adhesive film is mainly composed of thermoplastic polyurethane elastomer rubber polymer, which shows good elasticity with the increase of melting point temperature. Therefore, it is not elastic at low temperature, while the film is very elastic at high temperature.

Different specifications of TPU hot melt adhesive film have different melting temperatures, that is, high temperature and low temperature. If the heating temperature is higher than the temperature required for the TPU hot melt adhesive film, the TPU hot melt adhesive film will melt too fast or melt too much, making it easy for the glue to penetrate into the material to be adhered. In some textile fields, if the temperature is too high, the glue will penetrate and affect the bonding effect. If the bonding temperature is too low to reach the recommended temperature of the TPU hot melt adhesive film, the TPU hot melt adhesive film will melt incompletely or too slowly, so that the adhesive will not melt within a certain period of time. It spreads well into the adherend and does not form a good adhesion. When bonding materials, we put the TPU hot melt adhesive film between the materials to be bonded, and at the same time need to apply a certain pressure, and finally get a good bonding.

TPU hot melt adhesive film has a wide variety of specifications, which can meet the application needs of different products. It is fast bonding, easy to use, can save manpower, improve productivity and work efficiency; good bonding effect, high bonding fastness to some specific materials, and performance far superior to glue. TPU hot melt adhesive film acts as a bond between the same material and different materials. TPU hot melt adhesive film is widely used. TPU hot melt adhesive film has the advantages of environmental protection and non-toxicity. Now our country pays more and more attention to and promotes environmental protection. TPU hot melt adhesive film has great development potential in China and will replace non-environmentally friendly material film.

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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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