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Dongguan Green TPU Co.,Ltd.
15year TPU film/TPU hot melt adhesive film custom manufacturer
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What material is Tpu film made of
2023-01-10
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What material is Tpu film made of

    Tpu is a polymer material which is polymerized by diphenylmethane diisocyanate (MDI) or toluene diisocyanate (TDI) and other diisocyanate molecules, macromolecular polyols and low molecular polyols (chain extenders). Its molecular structure is composed of rigid blocks obtained by the reaction of diphenylmethane diisocyanate (MDI) or toluene diisocyanate (TDI) and chain extender, and flexible chain segments obtained by the reaction of diphenylmethane diisocyanate (MDI) or toluene diisocyanate (TDI) and macromolecular polyols. Tpu film is a mature environmental protection material with excellent characteristics of high tension, high tension, strength and aging resistance.

    Transparent effect of Tpu film

    The transparency of Tpu film refers to the ability of the natural color test piece to achieve visual clarity under different thickness. The thickness is often used to evaluate the effect of transparent TPU.

    Yellowing resistance grade of Tpu film

    Yellowing is mainly due to the color yellowing phenomenon caused by the continuous irradiation of ultraviolet light on the Tpu film. Generally, the laboratory simulation yellowing test is based on 1-5 levels to judge the color change, and 5 levels is no change.

    There are various testing standards for the yellowing resistance of Tpu film, and the main factors include the wattage of ultraviolet light, irradiation distance, time, temperature, humidity, etc.

    Dongguan GreenTPU Environmental Protection New Material Co., Ltd., located in Dongcheng Street, Dongguan City, Guangdong Province, is a professional supplier of Tpu film and TPU hot-melt adhesive film. After years of rapid development, it has become an integrated supplier of Tpu film, TPU hot-melt adhesive film and TPU products.

    

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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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