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TPU granular raw material (thermoplastic polyurethane) is becoming more and more popular because of its superior performance and environmental protection concept. TPU particles are made of MDI containing NCO functional group and polyol containing OH functional group and 1.4bg through extrusion and mixing. Due to their good elasticity, good physical properties and excellent mechanical strength, TPU particles are widely used in processing methods such as injection, extrusion, calendering and dissolution into solution resin. They are plastic materials often used by plastic processing industries. Their products cover the scope of industrial applications and necessities for people's livelihood. At present, where PVC is used, TPU can become a substitute for PVC. However, the advantages of TPU are beyond the reach of PVC. TPU not only has excellent characteristics of high tension, high tension, toughness and aging resistance, but also is a mature environmental protection material. At present, TPU has been widely used in shoe materials, clothing, inflatable toys, water and underwater sports equipment, medical equipment, fitness equipment, car seat materials, umbrellas, suitcases, leather bags, etc.
TPU film / TPU sheet is made of TPU granular raw materials. TPU film is widely used in sports shoes: trademark decoration on sole and upper, air bag, air cushion, oil bag, etc. Now, there are two trends in the application of TPU film in sports shoes: one is the popular trend caused by Nike sports shoes, that is, TPU film is first screen printed and colored, and then formed with high frequency and bonded to the upper for decoration, so as to achieve special decorative effect. Second, the waterproof and moisture permeable TPU film is used in conjunction with the shoe material cloth to achieve the effect of waterproof and moisture permeability.
