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There are two methods of TPU composite film
​One is post-adhesive: first make a TPU film and then glue it on the fabric, and the other is called online compounding: apply glue on the fabric or not glue it, and directly drool TPU on the fabric to make a TPU composite film.
2023-06-08
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There are two methods of TPU composite film

    One is post-adhesive: first make a TPU film and then glue it on the fabric, and the other is called online compounding: apply glue on the fabric or not glue it, and directly drool TPU on the fabric to make a TPU composite film.

    Generally, the factories that do post-lamination processing are not large in scale. There are many small factories in China, most of which buy TPU films from outside film factories, and only complete the process of gluing and laminating themselves. In the post-sticking process, high temperature and high pressure should be applied to the TPU film again. Improper process control will cause damage to the film and even small holes.

    Online lamination is to compound the fluid TPU film on the fabric at one time, avoiding damage to the film, the surface is beautifully formed, and different textures can be made. However, this composite method requires a large investment in equipment and high technical requirements.

    The uses of TPU composite film are: inflatable life jackets, diving bc jackets, life rafts, inflatable boats, inflatable tents, military inflatable self-inflating mattresses, massage airbags, medical anti-decubitus mattresses and professional waterproof backpacks.

    TPU film has excellent properties such as high strength, good toughness, cold resistance, oil resistance, aging resistance, weather resistance, environmental protection and non-toxic, decomposable, waterproof and moisture permeable, windproof, cold proof, warm, antibacterial, anti-ultraviolet and energy release. Made of TPU film The TPU composite film also has the above advantages

    The application range of TPU composite film is gradually extending from the original key fields such as shoes, clothing, home textiles, and high-end handbags to new fields such as agriculture, medical treatment, electronics, aerospace, and military industry. Moreover, TPU composite film is easy to recycle and has biodegradability. With the alternate development of industry technology, replacing non-environmental protection film with TPU composite film has become the trend of implementing environmental protection policies all over the world.

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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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