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TPU film manufacturers will explain to you how to correctly choose TPU hot melt adhesive film
First determine whether to use release paper TPU hot melt adhesive film or bare TPU hot melt adhesive film. For example, the secondary compound molding generally chooses the release paper TPU hot melt adhesive film; if only one compounding process is required, the bare TPU hot melt adhesive film can be considered. Although this judgment method is not 100% accurate, it can still be used for reference.
2022-03-16
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TPU film manufacturers will explain to you how to correctly choose TPU hot melt adhesive film

1. First determine whether to use release paper TPU hot melt adhesive film or bare TPU hot melt adhesive film. For example, the secondary compound molding generally chooses the release paper TPU hot melt adhesive film; if only one compounding process is required, the bare TPU hot melt adhesive film can be considered. Although this judgment method is not 100% accurate, it can still be used for reference.

2. Determine the type of TPU hot melt adhesive film material according to the type of adhesive material. This is difficult. It is necessary to clearly know that the characteristics of different types of TPU hot melt adhesive films are different, for example, the materials to be bonded at different temperatures are also different.

3. Selection of the thickness of TPU hot melt adhesive film After determining the type of specifications, it is necessary to determine what thickness of TPU hot melt adhesive film to use. The thickness should be appropriately selected. It is necessary to know that when the TPU hot melt adhesive film is used to bond some things that are not very special, it is recommended that the thinner the better!

4. Width and length. As a buyer, when inquiring about TPU hot melt adhesive film, I always ask if there is a wide TPU hot melt adhesive film. In fact, the width and length of the TPU hot melt adhesive film do not need to worry too much. As a manufacturer, the width is usually divided according to the actual production needs.

What temperature is better for TPU hot melt adhesive film?

In layman's terms, it is to adjust the temperature of the composite equipment to melt the heat. The adhesion of the TPU hot melt adhesive film to the material is ideal. Of course, this temperature value must meet the temperature resistance requirements of the material, otherwise the material will be damaged due to high temperature.

Therefore, the temperature that TPU hot melt adhesive film is more suitable for welding is based on the temperature resistance of the material to be adhered, and then the type of TPU hot melt adhesive film used is selected according to the requirements of the material. compatibility. Through these two dimensions, it is basically possible to determine which specification of TPU hot melt adhesive film to use. The next thing to do is actually a proofing test! This kind of controversy is common among companies that have just transitioned to lamination technology or are preparing to use TPU hot-melt adhesive films as adhesives.

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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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