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What temperature is better for TPU hot melt adhesive film?
TPU hot melt adhesive film belongs to the category of hot melt adhesive, which is actually made of hot melt adhesive particles. Hot melt adhesive particles are melted at high temperature in a sol box by professional production equipment, and then made by scraping, blowing, coating and other processes.
2022-03-30
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What temperature is better for TPU hot melt adhesive film?

TPU hot melt adhesive film belongs to the category of hot melt adhesive, which is actually made of hot melt adhesive particles. Hot melt adhesive particles are melted at high temperature in a sol box by professional production equipment, and then made by scraping, blowing, coating and other processes.

The temperature that TPU hot melt adhesive film is more suitable for welding is based on the temperature resistance of the material to be adhered, and then the TPU hot melt adhesive film to be used is selected according to the requirements of the material. compatibility. Through these two dimensions, it is basically possible to determine which specification of TPU hot melt adhesive film to use. The next thing to do is actually a proofing test! This kind of controversy is common among companies that have just transitioned to composite technology or are preparing to use TPU hot melt adhesive films as adhesives.

The correct selection of TPU hot melt adhesive film does not mean that the compounding of materials must be smooth, because there is a very important factor in the entire compounding process that will directly affect the bonding effect. Temperature has a great influence on the use of TPU hot melt adhesive film.

If the temperature is not suitable, it is likely to cause the hot melt film to "deteriorate". Simply put, if the bonding temperature of the TPU hot-melt adhesive film is too high, it is likely to cause the TPU hot-melt adhesive film to be "burned", and the temperature far exceeds the upper limit of the corresponding cornea itself. In the use of TPU hot melt adhesive film, the bonding temperature is a very important factor, because TPU hot melt adhesive film can only melt and become sticky at a certain temperature.

Due to the lack of basic knowledge and understanding of TPU hot melt adhesive film, it is more prone to misunderstandings. The controversial point of this understanding is that the temperature resistance and material compatibility of the material are completely ignored. It is believed that the TPU hot melt adhesive film is universal to all materials, and it is only necessary to select the appropriate temperature. When you have a certain understanding of TPU hot melt adhesive film, this doubt is actually solved.

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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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