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TPU film is used in waterproof and breathable fabrics and shoe materials
Waterproof and breathable fabric TPU film has strong adhesion and can be bonded with various materials to form a high-performance composite material. TPU film blowing waterproof and breathable film is widely used in clothing products, inflatable products, sporting goods, medical supplies and other fields. The waterproof and moisture-permeable composite fabric is laminated and compounded by ordinary textile fabrics and high-tech waterproof and moisture-permeable films such as TPU films. Breathing fabric" or "human second skin".
2022-08-30
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TPU film is used in waterproof and breathable fabrics and shoe materials

Waterproof and breathable fabric

TPU film has strong adhesion and can be bonded with various materials to form a high-performance composite material. TPU film blowing waterproof and breathable film is widely used in clothing products, inflatable products, sporting goods, medical supplies and other fields. The waterproof and moisture-permeable composite fabric is laminated and compounded by ordinary textile fabrics and high-tech waterproof and moisture-permeable films such as TPU films. Breathing fabric" or "human second skin". TPU film fundamentally solves the contradiction between waterproof and moisture permeability, increases the comfort of people wearing, improves product quality and added value, occupies the middle and high-end market, and has become the main project of textile product development in various countries. The field of industrialization continues to expand, and western developed countries have listed it as a high-tech product in the 21st century. At present, my country's TPU film waterproof and moisture-permeable membrane has been widely used in clothing and other fields.

shoe material

TPU film upper material is usually composed of three layers: the surface layer is PU layer, which is used to color and print patterns on the upper; the middle layer is TPU film, which is the main part of the fabric, which determines the main performance characteristics of the upper; The bottom layer is a TPU hot-melt adhesive film, which is mainly used as an adhesive to realize the bonding between the TPU upper material and the shoe. The TPU film upper material can be directly attached to the shoe body and press-molded by the excellent adhesive properties of the underlying TPU hot melt adhesive film without sewing process, so it is also called TPU seamless upper.

Due to the excellent performance of TPU film uppers and the processing method that does not require manual cutting, since 2009, the uppers of mid-to-high-end sports shoes have gradually used TPU film upper materials to replace PU microfiber leather and PU space leather. At present, the first-line sports shoe brands at home and abroad have used a large number of TPU films to make uppers, and the second-tier domestic sports shoe brands have also begun to use TPU film uppers.

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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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