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Hot melt film
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The stretching process of TPU film can be divided into unidirectional stretching and bidirectional stretching
​TPU film is a polymer elastic material and a new type of environmentally friendly material. Its special molecular structure makes it have excellent physical properties, such as: high elasticity, wear resistance, high strength, hardness, ductility, waterproof, breathable , Oil resistance, anti-mold. The TPU protective film can maintain elasticity for a long time in the range of -60°C-200°C.
2023-07-04
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The stretching process of TPU film can be divided into unidirectional stretching and bidirectional stretching

    TPU film is a polymer elastic material and a new type of environmentally friendly material. Its special molecular structure makes it have excellent physical properties, such as: high elasticity, wear resistance, high strength, hardness, ductility, waterproof, breathable , Oil resistance, anti-mold. The TPU protective film can maintain elasticity for a long time in the range of -60°C-200°C.

    A film-forming method of stretching TPU film longitudinally and transversely between softening temperature and melting temperature. The stretching process of TPU film can be divided into uniaxial stretching and biaxial stretching, but biaxial stretching is mainly used in actual production. Biaxial stretching can improve the performance of TPU film. According to the leather case or the material used for the watch case, the TPU film is attached to the surface of the material through high-temperature lamination equipment, and then blanked or cut according to the process requirements. After curing, remove the release paper of the TPU film, and iron the surface of the bonded material at high temperature.

    The quality of TPU film is reliable. The cloth surface is clean and smooth, with good tensile strength, high color fastness, not easy to change color, and long service life. Product features Environmental protection, high elasticity, voltage can be inflated, strong air tightness, high tear and high tensile strength and so on. Abrasion resistance and bubble absorption characteristics make it easy to handle in general environments, TPU film can maintain excellent abrasion resistance in different environments, the choice is one of the polymer materials, excellent moisture and heat resistance, and will not damage the sensor when peeled off, And it can also exclude foreign matter, high temperature resistance, oxidation resistance, TPU film has good oxidation resistance, the general polyester series can reach 130 degrees Celsius, and the polyether series can reach 90 degrees Celsius;

    They are more widely used in high-end footwear products, especially some sports shoes and casual shoes. There are a lot more. The film is highly tear-resistant. The tear resistance of the TPU film also reflects the material's transverse physical properties, notch tear strength, notch angle and tear criteria.

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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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