Application of TPU Crosslinking Agent in Shoe Material Field - Guangyuan Ruifeng New Materials

Category: Industry and Application

Release Time: 2025-07-24

Summary: Thermoplastic polyurethane (TPU) has a solid place in the shoe material market.

Thermoplastic polyurethane (TPU) has a solid place in the shoe material market. At every international shoe material exhibition, many manufacturers showcase their TPU shoe material and are constantly innovating. The use of TPU to produce a new product in hot melt adhesive, hot melt adhesive film, has gradually begun to take off and develop. Compared with the current dominant EVA hot melt adhesive and synthetic rubber hot melt adhesive, TPU hot melt adhesive film can not only meet customers' requirements for high viscosity, but also has good physical properties of TPU, such as high tensile strength, excellent flexibility, weather resistance, water resistance, hydrolysis resistance, transparency, less yellowing, comfortable contact with the human body, and easy processing. TPU hot melt adhesive film can handle many areas where traditional hot melt adhesives are difficult to use. (TPU crosslinker, crosslinker manufacturer, PVC adhesion promoter)

1、 Application of TPU in seamless shoe materials

TPU film shoe upper material usually consists of a three-layer structure: the surface layer is a PU layer, used for coloring and printing patterns on the shoe upper; The middle layer is TPU film, which is the main part of the fabric and determines the main performance characteristics of the shoe upper; The bottom layer is TPU hot melt adhesive film, which mainly serves as an adhesive to achieve the bonding between TPU shoe upper material and shoe body. The TPU film shoe upper material can be directly adhered to the shoe body, pressed and formed without the need for stitching, utilizing the excellent bonding properties of its underlying TPU hot melt adhesive film. Therefore, it is also known as TPU seamless shoe upper. (TPU crosslinker, crosslinker manufacturer, PVC adhesion promoter)

2、 Application of TPU on Flyknit Shoe uppers

Melt spun spandex yarn is a special type of polyurethane slice, and the melt spun spandex slices prepared by it have been widely used in both single and double fibers, mainly in industries such as shoe materials and clothing. During production, attention should be paid to factors such as cooling temperature, stretching ratio, and heat setting temperature. The left figure 1 is a melt spun spandex yarn processed from a product of Jintang Technology Company, and the right figure 1 is a melt spun spandex yarn with added color masterbatch. (TPU crosslinker, crosslinker manufacturer, PVC adhesion promoter)

3、 Application of TPU Hot Melt Powder in Shoe Material Lining

The emergence of polyurethane hot melt adhesive powder further improves the quality of lining fabrics. But since the research reports in the 1990s, polyurethane adhesive powder has been solving a problem of slow surface drying and difficulty in winding. With the advancement of technology, the improvement of TPU technical performance, and the enhancement of TPU processing performance, these problems have been basically solved. But there is still a need to address the issue of dry cleaning resistance. (TPU crosslinker, crosslinker manufacturer, PVC adhesion promoter)

Keywords: Application of TPU Crosslinking Agent in Shoe Material Field - Guangyuan Ruifeng New Materials

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