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Dongguan Green TPU Co.,Ltd.
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2023-10-27
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An explanation of the physical properties of TPU film

    TPU film, a thin film material with excellent physical properties, has been widely used in various fields in recent years. Its structure is divided into three layers. The surface layer and bottom layer are composed of polyurethane resin and additives. The middle layer is a pure resin layer of polyurethane resin. This structure makes the TPU film have excellent physical and chemical properties.

    TPU film has high elasticity and its hardness can be controlled by changing conditions such as temperature and humidity to adapt to different application scenarios. It has good wear resistance and can effectively resist friction and wear, extending its service life. The TPU film has excellent weather resistance and can resist erosion by ultraviolet rays, oxidation and other factors, so it can be used outdoors.

    In addition, TPU also has excellent transparency, and the internal structure and appearance can be clearly seen, making it suitable for occasions where transparency is required. It is also high temperature and low temperature resistant and can be used in high and low temperature environments.

    The performance indicators of TPU film are also excellent. It has high tensile strength and can withstand large tensile forces, and is suitable for making various products that need to withstand tensile forces. Its tear strength is also very high and can resist large tearing forces. It is suitable for making various products that need to resist tearing forces.

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    At the same time, the light transmittance of the TPU film is very high, and the internal structure and appearance can be clearly seen, making it suitable for occasions that require transparency. Its haze is very low and the internal structure and appearance can be clearly seen, making it suitable for occasions requiring high clarity. Hardness can also be controlled by changing conditions such as temperature and humidity, which is suitable for occasions requiring different hardnesses.

    In summary, TPU film, as an excellent film material, has attracted much attention for its excellent physical and chemical properties. This article explains in detail the structure, characteristics, performance indicators and other aspects of TPU film. I hope it will help everyone better understand and use TPU film.

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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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