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Introduction of tpu hot melt adhesive film and TPU film for shoe materials
tpu hot melt adhesive film and TPU film are two different materials. TPU materials are in great demand in the production of shoe materials. However, as a new technology material, we should first understand the characteristics of tpu hot melt adhesive film and TPU film, and then we can choose products, which will be more effective. So it will be more comfortable to apply.
2022-03-11
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Introduction of tpu hot melt adhesive film and TPU film for shoe materials

tpu hot melt adhesive film and TPU film are two different materials. TPU materials are in great demand in the production of shoe materials. However, as a new technology material, we should first understand the characteristics of tpu hot melt adhesive film and TPU film, and then we can choose products, which will be more effective. So it will be more comfortable to apply.

tpu hot melt adhesive film

According to the material used in the sample shoes, the tpu hot melt adhesive film is pressed on the surface of the material with high-temperature composite mechanical equipment, and after it is completely dry, cold stamping or electro-engraving is performed according to the customized parts of the template, and the tpu hot melt adhesive film is removed. release paper, and then press it on the surface of mesh or other fabrics at high temperature. This method is called seamless stitching rubber shoes;

This seamless splicing bonding method can be applied to all seamless splicing casual shoes, but there are different processing rules for different materials. Therefore, we have to choose the matching tpu hot melt adhesive film according to our own rules, which can only be applied in large quantities after experiments.

TPU film

The TPU film upper material is generally composed of three layers: the surface is the PU layer, which is used for coloring and printing lines on the upper; the inner TPU film is part of the main body of the cloth and determines the key performance characteristics of the upper; it is the bottom layer of The key function of tpu hot melt adhesive film is to use it as an adhesive to complete the bonding of TPU film as upper material and shoe body. The TPU film upper material can utilize the excellent adhesive properties of the underlying tpu hot melt adhesive film to instantly satisfy and inhibit the molding of shoes without sewing process, so it is also called TPU film seamless upper.

Due to the good performance of TPU film uppers, the production method does not require manual cutting, TPU film upper materials are gradually applied, and PU microfiber leather and PU space leather are replaced on a large scale by middle and high-end casual shoe uppers. At present, many first-line sports shoe brands in the world have used TPU film as the upper, and domestic second-tier sports shoe brands have gradually begun to use TPU film as the upper.

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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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