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TPU hot melt adhesive film is a recyclable and environmentally friendly product.
TPU hot melt adhesive film is a specification product of hot melt adhesive film, which is made of polyurethane and other materials. In simple terms, TPU hot melt adhesive films can generally be divided into two types: bare TPU hot melt adhesive films and release paper TPU hot melt adhesive films.
2022-05-13
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TPU hot melt adhesive film is a recyclable and environmentally friendly product.

TPU hot melt adhesive film is a specification product of hot melt adhesive film, which is made of polyurethane and other materials. In simple terms, TPU hot melt adhesive films can generally be divided into two types: bare TPU hot melt adhesive films and release paper TPU hot melt adhesive films.

Different specifications of TPU hot melt adhesive films have different melting temperatures, that is, 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 fast or melt too much, making the glue easily penetrate into the material to be adhered. Especially in some textile fields, if the temperature is too high, the glue will penetrate and affect the bonding effect. The higher the melting point, the higher the elasticity and transparency of the TPU hot melt adhesive film. The ultra-low temperature TPU hot melt adhesive film is inelastic and its color is milky white frosted.

Applying a certain pressure to the TPU hot melt adhesive film can make the glue form a uniform adhesive layer on the surface of the adherend. Part of the adherend itself has stress, and it needs cold pressing after hot pressing, which can effectively avoid the bonding failure caused by stress release. Improper bonding process of TPU hot melt adhesive film will also cause poor bonding effect, such as too much or too little glue on the surface of the adherend, unstable bonding time, etc. The bonding process of TPU hot melt adhesive film is also different due to the difference of the glue time. Some need to be glued for a period of time after gluing, while others need to be glued immediately.

TPU hot melt adhesive film is a recyclable and environmentally friendly product, and the loss rate is low during the production and use of TPU hot melt adhesive film. During the process of making the input material, the membrane waste can be completely recycled, which has the advantage of reducing energy consumption, activation temperature, curing time, carbon dioxide emissions and cost.

The coated TPU hot melt adhesive film is generally a release film, which is suitable for the secondary composite process and is mainly used for the composite bonding of 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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