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At what temperature does the TPU hot melt adhesive film weld well
​The characteristics of TPU hot melt adhesive film include high elasticity, high toughness, weather resistance, washability, dry cleaning, soft touch, strong adhesion, diverse raw materials and environmental protection. Different specifications of TPU hot-melt adhesive films have different melting temperatures, namely high temperature and low temperature. If the heating temperature is higher than the temperature required for the TPU hot melt adhesive film, the TPU hot melt adhesive film will melt too quickly or excessively, making the glue easily penetrate into the bonded material, causing poor contact.
2022-11-15
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At what temperature does the TPU hot melt adhesive film weld well

    The characteristics of TPU hot melt adhesive film include high elasticity, high toughness, weather resistance, washability, dry cleaning, soft touch, strong adhesion, diverse raw materials and environmental protection. Different specifications of TPU hot-melt adhesive films have different melting temperatures, namely high temperature and low temperature. If the heating temperature is higher than the temperature required for the TPU hot melt adhesive film, the TPU hot melt adhesive film will melt too quickly or excessively, making the glue easily penetrate into the bonded material, causing poor contact.

    Relationship between TPU hot melt adhesive film and Different Temperatures

    1. The melting point of TPU hot melt adhesive film is also the initial flow temperature of TPU hot melt adhesive film, the initial flow temperature and the minimum processing temperature of TPU hot melt adhesive film.

    2. The hot pressing temperature is the TPU hot melt adhesive film. The hot pressing temperature refers to the temperature at which the bonding surface is heated by the protective paper to the bonded material, so that the bonding surface is melted and bonded to the surface of the bonded material.

    3. Temperature resistance: TPU hot melt adhesive film refers to the temperature that exceeds the critical point and begins to soften. The relationship between the three is as follows: temperature resistance>melting point>hot pressing temperature.

    TPU hot melt adhesive film is a kind of material in hot melt adhesive film. TPU hot melt adhesive film is a new type of environmental protection material, which has the degradation ability, environmental protection, non-toxic, yellowing resistance, and is suitable for products in direct contact with human beings. The application of TPU hot-melt adhesive film includes clothing bonding and sneaker bonding.

    The key to the good welding effect of TPU hot melt adhesive film at what temperature is to see the temperature resistance of the bonded material, and then select the type of hot melt adhesive film to be used according to the requirements of material compatibility. TPU hot-melt adhesive film based on TPU can obtain uniform adhesive layer through the action of heat and pressure. The product is applicable to various materials. TPU hot melt adhesive film can obtain uniform adhesive layer. Through these two dimensions, we can basically determine the temperature of the TPU hot melt adhesive film. The next step is to sample and test!

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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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