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Hot melt film
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How to choose TPU hot melt adhesive film?
TPU hot melt adhesive film is a kind of hot melt adhesive that can be solid at room temperature. With stable cast TPU hot melt film performance, no adhesion! But the condition of bonding is heating, and when the corresponding temperature is reached, there will be a melting point. At this time, after melting and cooling to achieve the effect of sticking objects, it can be determined that the TPU hot melt adhesive film needs to be heated to melt.
2022-03-28
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How to choose TPU hot melt adhesive film

TPU hot melt adhesive film is a kind of hot melt adhesive that can be solid at room temperature. With stable cast TPU hot melt film performance, no adhesion! But the condition of bonding is heating, and when the corresponding temperature is reached, there will be a melting point. At this time, after melting and cooling to achieve the effect of sticking objects, it can be determined that the TPU hot melt adhesive film needs to be heated to melt.

The main method of classification of TPU hot melt adhesive films is still based on materials. Whether there is a substrate, the type of high temperature and low temperature, the width and thickness are all used to select the size of specific specifications for reference. The material of TPU hot melt adhesive film is suitable for industry, and the compounding process and conditions of the product determine the melting point, width and thickness of the TPU hot melt adhesive film to be selected.

TPU hot melt adhesive film is widely used and always appears in unexpected places. Briefly list some usage scenarios of TPU hot melt adhesive film.

(a) TPU hot melt adhesive film is also required for the production of shoe uppers;

(b) Automotive interiors require composite TPU hot melt adhesive films;

(c) It is necessary to wear the thickened composite film of velvet warm pants with TPU hot melt adhesive film in winter;

Clothing design fabrics, non-woven leather, etc. All need composite TPU hot melt adhesive film.

The scope of application of TPU hot melt adhesive film

TPU series hot melt adhesive films can be divided into the following categories according to their classification characteristics, and the products can be divided into the following categories:

The composite material has low temperature and good elasticity. Applicable research scope: leather/shoe material/microfiber/mobile phone case/computer bag and other industries;

Good waterproof and breathable range: jacket/sports fabric/plastic/paper/wood/ceramic/textile and other industries.

When using TPU hot melt adhesive film, do you need to consider softness? Is the need to consider high temperature or low temperature applications? Do you want to wash it with water? Is it dry cleaning? Do you want to consider the expansion force? If there are the above requirements, it is necessary to choose the TPU hot melt adhesive film with the corresponding characteristics.

If there are a variety of TPU hot melt adhesive films to choose from, please choose the most cost-effective TPU hot melt adhesive film, and when meeting the bonding requirements, please choose the thinnest TPU hot melt adhesive 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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