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Some features of TPU hot melt adhesive film
Polyurethane is a thermoset material commonly referred to as TPU. TPU hot melt adhesive film is formed by heating and melting TPU particles. Key production processes include lamination, hot melt coating, and more. TPU hot melt adhesive film is the key variety in many hot melt adhesive films.
2022-08-10
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Some features of TPU hot melt adhesive film

    Polyurethane is a thermoset material commonly referred to as TPU. TPU hot melt adhesive film is formed by heating and melting TPU particles. Key production processes include lamination, hot melt coating, and more. TPU hot melt adhesive film is the key variety in many hot melt adhesive films.

    The main method for the classification of TPU hot melt adhesive films is still based on the bonding material. There are two types of TPU hot melt adhesive films: high temperature and low temperature. Width and thickness are used to select the size of a specific specification. The material of TPU hot melt adhesive film is suitable for industry. The compounding process and conditions of the product determine the melting point, width and thickness of the selected TPU hot melt adhesive film.

    TPU hot melt adhesive film not only has strong adhesion, but also has excellent abrasion resistance and water resistance. It can be used for a long time in the field of outdoor humid and trendy environment. Can be washed, environmentally friendly, piped. This is also one of the key factors for many manufacturers to choose TPU hot melt adhesive film as a binder.

    Some features of TPU hot melt adhesive film are:

    1. Wide range of hardness standards: By changing the ratio of TPU reactive components, TPU hot melt adhesive films with different hardness standards can be obtained. With the increase of hardness standard, TPU hot melt adhesive film still maintains good ductility and wear resistance.

    2. High mechanical strength: TPU hot melt adhesive film has excellent bearing capacity, impact resistance and shock resistance.

    3. Excellent cold resistance: TPU hot melt adhesive film has a low vitrification state, and still maintains good physical properties such as ductility and flexibility under -35.

    The temperature of the TPU hot melt adhesive film is based on the temperature resistance of the adhesive material, and then the type of TPU hot melt adhesive film used is selected according to the material requirements. compatibility. With these two dimensions, you can basically determine the specifications of the TPU hot melt adhesive film. The next thing you need to do is a proofreading test!

    If there are a variety of TPU hot melt adhesive films to choose from, choose a cost-effective TPU hot melt adhesive film; if it can meet your bonding requirements, choose the thinnest TPU hot melt adhesive film (the thinner the TPU hot melt adhesive film, the thinner the TPU hot melt adhesive film. The thinner the cheaper the price).

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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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