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TPU hot melt adhesive film is a common type of hot melt adhesive film
​TPU hot melt adhesive film is a common type of hot melt adhesive film. Because of its good softness and washability, it is better to use TPU hot melt adhesive film to bond fabrics in the clothing industry. For cloth art product manufacturers, although most TPU hot melt adhesive films are applicable, they still need to pay attention to the selection, because there are certain differences between them.
2023-05-02
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TPU hot melt adhesive film is a common type of hot melt adhesive film

    TPU hot melt adhesive film is a common type of hot melt adhesive film. Because of its good softness and washability, it is better to use TPU hot melt adhesive film to bond fabrics in the clothing industry. For cloth art product manufacturers, although most TPU hot melt adhesive films are applicable, they still need to pay attention to the selection, because there are certain differences between them.

    TPU hot melt adhesive film is a kind of adhesive that is stable and solid at room temperature, and will only become sticky when heated to a certain temperature. Its use method will have certain differences due to different bonding materials and composite environments. The following is an introduction to the use of TPU hot melt adhesive film.

    The use of TPU hot melt adhesive film can be divided into two situations, one is non-mass production: for example, it is used in small areas, and it is used in small-scale shops with processing properties (such as shops operating curtains); in the second case, industrial production needs Batch processing.

    TPU hot melt adhesive film is a double-sided adhesive that needs to be heated to function. Most enterprises need to use TPU hot melt adhesive film. They can use high-temperature composite technology equipment to transfer the film to material A. After waiting for a while for the cooling system to fix, tear off the release paper and stick material B to the TPU hot melt adhesive film. Then by pressing the surface of material B at high temperature, the bonding effect will be realized. This method is called "seamless bonding".

    Almost all TPU hot melt adhesive films are suitable for bonding a variety of fabrics, but different models have great differences in the characteristics of different fabrics, and the selection should be identified according to the specific characteristics. If the fabric itself requires high elasticity, it is recommended to use a medium-high temperature type TPU hot melt adhesive film for compounding; if the fabric itself is less elastic, it should be compounded at a low temperature, and a low-temperature type TPU hot melt adhesive film should be selected

11 高温TPU热熔胶膜产品参数首图.jpg

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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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