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How to choose the right TPU hot melt adhesive film
​TPU hot melt adhesive film is now a controversial issue is at what temperature TPU hot melt adhesive film melts and bonds better, or what size TPU hot melt adhesive film​ is more suitable for bonding materials? At first glance, the two controversial arguments seem to be different, but those who really understand them can see the difference at a glance.
2022-12-09
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How to choose the right TPU hot melt adhesive film

    TPU hot melt adhesive film is now a controversial issue is at what temperature TPU hot melt adhesive film melts and bonds better, or what size TPU hot melt adhesive film is more suitable for bonding materials? At first glance, the two controversial arguments seem to be different, but those who really understand them can see the difference at a glance.

    The two different points of contention are explained as follows: The point of contention is actually the temperature conditions during compounding. In layman's terms, this means that the temperature of the compound is adjusted to melt the heat. The adhesion of the film to the material reaches the ideal condition. Of course, the temperature value must meet the heat resistance requirements of the adhesive material, otherwise the high temperature will damage the adhesive material.

    Therefore, the better melting temperature for TPU hot melt adhesive film is based on the heat resistance value of the material being bonded, and then the TPU hot melt adhesive film is selected according to the material requirements. Compatibility. With these two dimensions, you can basically determine the specifications of the TPU hot melt adhesive film to be used.

    The use of TPU hot melt adhesive film can be divided into two cases, one is non-volume production:for example, small area use, in small-scale stores with processing nature (such as stores dealing with curtains); the second case, industrial production requires batch processing.

    For non-batch production scenario using TPU hot melt adhesive film, first of all, the TPU hot melt adhesive film or hot melt mesh film they use is based on conventional models, which generally do not have special requirements. In this large demand scenario, the tools used for laminating are mainly ironing machines, ironing machines and irons, and the melting point of the TPU hot melt adhesive film used is not too high. When bonding, the laminating tool is adjusted to the appropriate temperature

    The temperature, ironing force 10-20 seconds to complete the composite bonding. The overall operation is not very difficult, if the situation of debonding, bonding is not strong, it may be the choice of TPU hot melt adhesive film specifications have deviations, or ironing temperature is not enough, analyze the specific causes of which, and then make targeted adjustments can be.

    From the adhesive point of view, it is not difficult to use TPU hot melt adhesive film. What is difficult is how to choose the right TPU hot melt adhesive film, there will be a large number of the same type of cases for your reference, but in view of the production process of each enterprise and the environment and other issues, may still lead to differences in the selection of models. Therefore, it is very important for us to do a good job in the preliminary sample work.

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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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