TPU, thermoplastic TPU elastomer, is made of MDI containing NCO functional group and POLYOL and 1.4BG containing OH functional group by extrusion and mixing. Due to its good elasticity, good physical properties and various mechanical strengths, it is Therefore, it is widely used in processing methods such as injection, extrusion, calendering, and dissolving into solution-based resins. It is a plastic material often used by plastic processors, and its products cover the range of industrial applications and civilian necessities.

In recent years, due to the continuous development of new products, the amount of thermoplastic PU elastomers is continuously increasing, creating a new opportunity for plastic processors with low cost and high added value.

TPU (thermoplastic polyurethane) is increasingly popular due to its superior performance and environmental protection concept. At present, wherever PVC is used, TPU can become a substitute for PVC. But the advantages of TPU, PVC is far behind. TPU not only has excellent properties of high tension, high tensile force, toughness and aging resistance, but also is a mature environmental protection material. At present, TPU has been widely used in: shoe materials, ready-to-wear, inflatable toys, water and underwater sports equipment, medical equipment, fitness equipment, car seat materials, umbrellas, luggage, leather bags, etc. TPU film is in TPU particles On the basis of raw materials, films are made by calendering, casting, film blowing, coating and other processes. At present, it is widely used in sports shoes: trademark decoration on soles and uppers, airbags, air cushions, oil bags, etc.

Today, there are two trends in the application of TPU film on sports shoes: one is the popular wind blown by women's sandals, that is, the high-transparency TPU film is either cut directly, or screen-printed and colored, or laminated with cloth. The base is made of mesh cloth, etc., which is formed by high-frequency waves and bonded to the upper of the shoe, which has functional and decorative effects. The second is to use the waterproof and moisture-permeable TPU film and the shoe material to be used together to achieve the effect of waterproof and moisture-permeable.

Compared with PVC, EVA, butyl rubber and other plastic materials, TPU not only has excellent characteristics such as environmental protection, non-toxic, anti-mildew and anti-bacterial, wear-resistant and anti-corrosion, and biocompatibility, but also is resistant to twisting and tearing, acid and alkali oil stains, and aging resistance. Oxidation, broad weather resistance and other properties are also very excellent. TPU film will become one of the mainstream environmental protection materials in the 21st century because of its incomparable advantages.