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Pain points during the production of TPU composite membrane
​As a high-performance material, TPU (thermoplastic polyurethane) composite film has been widely used in many fields due to its excellent wear resistance, tear resistance, oil resistance and low temperature resistance. However, in the production process of TPU composite film, there are also some pain points that cannot be ignored.
2025-03-28
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Pain points during the production of TPU composite membrane

    As a high-performance material, TPU (thermoplastic polyurethane) composite film has been widely used in many fields due to its excellent wear resistance, tear resistance, oil resistance and low temperature resistance. However, in the production process of TPU composite film, there are also some pain points that cannot be ignored.

    First, the thermoplastic properties of TPU materials make temperature control crucial during processing. TPUs are very sensitive to shear and temperature, too high temperatures may cause melt decomposition, while too low temperatures may affect the plasticization effect. Therefore, in the processing links such as extrusion, film blowing, and casting, the temperature of the heating system must be strictly controlled to ensure that the TPU material can be heated evenly and avoid performance degradation caused by overheating or overcooling.

    Secondly, the uniformity of the TPU composite film is also a challenge. In order to ensure the quality and performance of the product, the thickness of the TPU film must be uniform and consistent. This requires high precision and stability of processing equipment, and the selection of extruders and molds directly affects the quality and production efficiency of the product. In actual operation, the extrusion process and mold design need to be continuously optimized to ensure the uniformity of the film.

    In addition, there may also be problems such as bubbles and crystal points during the processing of the TPU composite film. These problems may be due to improper moisture, impurities or processing parameters in the material. Therefore, before processing, the TPU material must be strictly dried to remove moisture and impurities. At the same time, it is also necessary to reasonably set processing parameters, such as screw speed, head pressure, etc. to avoid these problems.

    Finally, the production cost of TPU composite film is also a pain point that needs to be considered. Although TPU materials have excellent performance, their price is relatively high, resulting in corresponding increase in the cost of the final product. To reduce production costs, manufacturers need to constantly explore more economical production processes and alternative materials.

    To sum up, TPU composite film faces pain points such as temperature control, uniformity, bubble and crystal point problems, and cost during the production process. To solve these problems, manufacturers need to continuously optimize processing processes and equipment, improve product quality and production efficiency, and explore more economical production solutions to meet market demand.

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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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