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TPU film is a flexible film
TPU film is a flexible film made of thermoplastic polyurethane (TPU), which has excellent mechanical strength, abrasion resistance and chemical resistance, and is widely used in medical, electronics, aviation, textile and other fields.
2023-03-28
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TPU film is a flexible film

    TPU film is a flexible film made of thermoplastic polyurethane (TPU), which has excellent mechanical strength, abrasion resistance and chemical resistance, and is widely used in medical, electronics, aviation, textile and other fields.

    1. Characteristics of TPU film

    1. Excellent physical properties: TPU film has excellent physical properties such as high strength, high toughness, high elasticity and high wear resistance, can withstand large tensile and compressive forces, and has good tear resistance.

    2. Good chemical stability: TPU film has good chemical corrosion resistance, can resist the erosion of acid, alkali, oil, solvent and other chemical substances, and has good oxidation resistance.

    3. Good transparency: TPU film has good transparency and gloss, can maintain a clear visual effect, and has good anti-ultraviolet performance. 4. Easy processing: TPU film has good thermoplastic properties, can be processed by hot pressing, heat sealing, thermoforming and other processing methods, and has good plasticity and dyeability.

    The preparation of TPU film first needs to mix polyurethane, plasticizer, stabilizer, lubricant and other raw materials uniformly by blending or reaction method, and extrude or calender into film at high temperature.

    In the field of electronics, TPU films are mainly used in mobile devices, automotive electronics, solar cells and other fields. Because the TPU film has high heat resistance and weather resistance, it can resist high temperature, ultraviolet rays and other harsh environments, and protect electronic components from damage. In addition, TPU film also has certain conductivity and shielding properties, and can be used as touch screens, antennas, EMI shielding materials, etc. Due to the good processability and adjustability of TPU, films with different properties can be obtained by adjusting the ratio of raw materials and process conditions.

    In the medical field, TPU films are widely used in surgery, artificial organs, drug packaging, etc. Due to the excellent biocompatibility and low toxicity of TPU film, it can directly contact human tissue without causing rejection or allergic reaction. In addition, TPU film also has high air permeability and self-adhesiveness, and can be used as wound dressing and catheter wrapping material, which is helpful for wound healing and instrument use.

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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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