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TPU hot melt adhesive film according to the use of temperature
​TPU hot melt adhesive film​ can indeed be categorized into three types: low temperature, medium temperature and high temperature, depending on the temperature of use. Each type has its specific application scenarios and advantages.
2024-04-09
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TPU hot melt adhesive film according to the use of temperature

    TPU hot melt adhesive film can indeed be categorized into three types: low temperature, medium temperature and high temperature, depending on the temperature of use. Each type has its specific application scenarios and advantages.

    Low Temperature TPU hot melt adhesive film: The melting point of this type of hot melt adhesive film is relatively low, usually between 60~80℃. Due to its low bonding temperature, it is suitable for heat-sensitive materials or applications that require fast bonding at lower temperatures. Low-temperature TPU hot melt adhesive films are widely used in applications such as apparel, footwear and some electronic products, where their low-temperature and fast bonding characteristics can improve productivity and reduce energy consumption.

    Medium temperature TPU hot melt adhesive film: The melting point of medium temperature TPU hot melt adhesive film is usually between 80~120℃. This type of hot melt adhesive film excels in adhesive strength and heat resistance, and is suitable for applications with high material requirements, such as automotive interiors, industrial products and some advanced electronics. Medium temperature TPU hot melt adhesive films can achieve good bonding results at moderate temperatures and have good durability.

    High temperature TPU hot melt adhesive film: High temperature TPU hot melt adhesive film usually has a melting point of more than 120℃. This kind of hot melt adhesive film is mainly used in applications that need to withstand high temperature environment or need higher bonding strength. High-temperature TPU hot melt adhesive film is used in aerospace, military and some special industrial fields, and its excellent high-temperature resistance and adhesive strength can meet the high requirements for material performance in these fields.

    It should be noted that different types of TPU hot melt adhesive films have different melting temperatures and adhesive strengths, so the selection needs to be considered according to the specific application scenarios and needs. At the same time, the correct use and storage is also an important factor to ensure that the performance of TPU hot melt adhesive film is stable.

    Overall, low temperature, medium temperature and high temperature TPU hot melt adhesive films have their own characteristics, which can meet the needs of different industries for adhesives. With the continuous progress of technology and the expansion of application areas, the performance and application of TPU hot melt adhesive film will continue to be optimized and expanded.

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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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