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The selection of TPU hot melt adhesive film is a technical activity
​TPU hot melt adhesive film is a kind of hot melt adhesive film, which is easy to attract people's attention mainly because it is an environmentally friendly adhesive. Like all adhesive films, its application range will be wider, mainly in the range of multiple melting points. We have said more than once that glue is just like medicine. Only by applying the right medicine to the case can we get rid of the disease. In the same way, only by applying glue according to the material can we bond firmly. Therefore, different types of TPU hot melt adhesive films are often used for different materials and different needs.
2023-02-03
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The selection of TPU hot melt adhesive film is a technical activity

    TPU hot melt adhesive film is a kind of hot melt adhesive film, which is easy to attract people's attention mainly because it is an environmentally friendly adhesive. Like all adhesive films, its application range will be wider, mainly in the range of multiple melting points. We have said more than once that glue is just like medicine. Only by applying the right medicine to the case can we get rid of the disease. In the same way, only by applying glue according to the material can we bond firmly. Therefore, different types of TPU hot melt adhesive films are often used for different materials and different needs.

    The selection of TPU hot melt adhesive film is actually a relatively difficult problem. The selection result of TPU hot melt adhesive film will directly affect the composite quality of the adhesive film, so in essence, the selection of TPU hot melt adhesive film is a technical activity. If it is a product under development, poor selection of TPU hot melt adhesive film will lead to poor composite, or directly lead to product development failure.

    For example, there are some differences between shoe material industry and clothing industry. Although it may involve the bonding of some fabrics and leather, in the clothing industry, there is often a higher requirement for water washability, while the shoe material industry often does not have too many requirements for this, so the shoe material industry will use more EVA adhesive film, and the clothing industry will use more TPU hot melt adhesive film. Because the washability of TPU hot melt adhesive film is generally better than that of EVA adhesive film, and its softness is also better, which is more in line with the characteristics of the clothing industry.

    In general, the selection of TPU hot melt adhesive film is a technical issue, which needs to be taken seriously by the purchaser, and also requires a certain amount of energy and time. Specifically, the selection of TPU hot melt adhesive film must be determined according to the actual requirements of the project and after specific tests. This requires you to contact the manufacturer, listen to the relevant opinions to narrow your selection range, and then determine which TPU hot melt adhesive film to choose after testing a variety of samples. Once the model is determined, as long as the material does not change, there will be no major changes.

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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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