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Precautions for using tpu hot melt adhesive film
When choosing TPU hot-melt adhesive film, it is necessary to consider this problem in advance and narrow the range of TPU hot-melt adhesive film models, so as to achieve more with less effort. As long as the use temperature of the tpu hot melt adhesive film is lower than the softening temperature of the material itself, it can ensure that the coating material does not deform during the hot pressing process. We only need to deliberately choose a tpu hot melt adhesive film to bond the material.
2022-03-10
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Precautions for using tpu hot melt adhesive film

When choosing TPU hot-melt adhesive film, it is necessary to consider this problem in advance and narrow the range of TPU hot-melt adhesive film models, so as to achieve more with less effort. As long as the use temperature of the tpu hot melt adhesive film is lower than the softening temperature of the material itself, it can ensure that the coating material does not deform during the hot pressing process. We only need to deliberately choose a tpu hot melt adhesive film to bond the material.

The right choice is the keyword.

The so-called cure requires the right medicine, and the same is true for the use of tpu hot melt adhesive film composite materials. Only by applying glue according to the material can the true adhesion of tpu hot melt adhesive film be exerted. Different materials and surfaces have different properties, so the principle of the bonding machine used is also different. According to the nature of the material to be bonded, only by selecting the appropriate tpu hot melt adhesive film can the ideal bonding effect be obtained.

Treatment of adhesive surfaces

When using tpu hot melt adhesive film, the treatment of the adhesive surface is easily neglected, and the residual stains on the adhesive surface will hinder the adhesion, which will naturally reduce the adhesion effect. At this time, it is necessary to pre-treat the binding surface to minimize the deterioration of the binding effect caused by such external factors.

Bonding temperature and time

The bonding temperature is a very important factor affecting the use of tpu hot melt adhesive film, because tpu hot melt adhesive film only begins to melt at a certain temperature, so special attention should be paid. If the application temperature is too low, the hot melt adhesive powder will not be fully melted, and the fluidity will be poor, which will affect the bonding effect. If the application temperature is too high, the tpu hot melt adhesive film is too full, and the hot pressing time is not adjusted in time, it will lead to excessive penetration of the glue and insufficient glue layer. It should be noted that the operation time of tpu hot melt adhesive film bonding is adjusted according to the corresponding temperature. When the temperature is high, the time is shorter; when the temperature is low, the time should be extended accordingly.

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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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