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TPU hot melt adhesive film does not stick at room temperature
​The TPU hot melt adhesive film is divided into high melting dots and low melting points. The melting point, width and thickness of the TPU hot melt adhesive film​ are determined by the complex process and conditions of the product.
2022-10-12
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TPU hot melt adhesive film does not stick at room temperature

    The TPU hot melt adhesive film is divided into high melting dots and low melting points. The melting point, width and thickness of the TPU hot melt adhesive film are determined by the complex process and conditions of the product.

    When usingTPU hot melt adhesive film, bonding temperature is a very important factor. The TPU hot melt adhesive film is not adhered at room temperature, and the necessary condition for bonding is heating. By heating to the corresponding temperature, the TPU hot melt adhesive film can be melted and sticky at a certain temperature, and it can be sticky after heating and melting, otherwise it is similar to the ordinary plastic film.

    The TPU hot melt adhesive film is heated at high temperatures. When it changes from solid state to viscous liquid, liquid glue penetrates into the surface of the adhesive and exerts corresponding pressure. After the TPU hot melt adhesive film is cold and solidified, it becomes an adhesive, and the two materials are firmly bonded together. At this point, the TPU hot melt adhesive film has completed its mission.

    The TPU hot melt adhesive film has a low loss in the entire process of production and use. The corners of the TPU hot melt adhesive film in the process of making key materials can be recycled again, which has the advantages of reducing energy consumption, activation temperature, first coagulation, carbon dioxide emissions and cost.

    In addition to the temperature problem mentioned above, do we still need to consider softness when using TPU hot melt adhesive film? Should the needs of high temperature applications or the needs of low temperature applications? Do you want to wash it with water? Is it dry? Do you want to consider the expansion power? If you have the above requirements, you should choose a TPU hot melt adhesive film with corresponding characteristics. TPU hot melt adhesive film is a type of hot -melt glue film, a new type of environmental protection material. It has the ability to degrade, environmental protection, non -toxic, and yellow resistance, and it is suitable for products that are directly contacted with the human body.

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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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