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Hot melt film
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The use of TPU hot melt adhesive film
Hot melt adhesive film. The reason why it is easy to attract people's attention is mainly because it is an environmentally friendly adhesive. Like all adhesive films, it has a certain adhesiveness and has a wider range of applications, which is mainly related to its multi-melting point range.
2022-01-12
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The use of TPU hot melt adhesive film

Hot melt adhesive film. The reason why it is easy to attract people's attention is mainly because it is an environmentally friendly adhesive. Like all adhesive films, it has a certain adhesiveness and has a wider range of applications, which is mainly related to its multi-melting point range.

TPU hot melt adhesive film can be punched into free shapes to prevent extrusion. The viscosity adjustment and solvent drying process required by traditional adhesives can be omitted, and a high level of craftsmanship is not required, which can greatly reduce the cost. Strong adhesion, high frequency heating, ultrasonic sealing and hot pressing can be easily obtained by any of the following methods.

First of all, in the sports shoe industry, users need to transfer the TPU hot melt adhesive film to the surface of the material through a heat transfer machine, and after drying, etch and punch each customized part. This method is known in our industry. For seamless bonding of uppers.

Then there is the clothing industry. According to the requirements of the fabric, the TPU hot-melt adhesive film is cut into corresponding widths, pressed at high temperature on the surface of the fabric until the TPU hot-melt adhesive film is completely fitted, and then pressed at high temperature as required. This method is called thermal-thermal seamless.

Product characteristics of TPU hot melt adhesive film

1. TPU hot melt adhesive film has good washing resistance, but poor dry cleaning resistance

2. TPU hot melt adhesive film can withstand high temperature of 110 degrees and low temperature of minus 20 degrees.

3. At the same time, TPU hot melt adhesive film also has good elasticity, we can make it have high elasticity according to our own requirements!

The fabric bonded with TPU hot melt adhesive film is very comfortable to wear on the human body, and there is no plastic feeling and foreign body feeling. All of this is due to the properties of polyurethane, its main ingredient. The above is the introduction of the main components and raw materials of TPU hot melt adhesive film. Due to the properties of the material, the TPU hot melt adhesive film exhibits good washability, flexibility and elasticity. Suitable for textile, leather and TPU hot melt adhesive films. This material has good adhesion and is widely used in clothing, home building materials, shoe materials and many other fields.

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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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