At present, there are two processes that can solve the adhesion problem of TPU fabric.

1, sewing+sealing strip;

2. High frequency hot pressing.

TPU has been widely used in shoes, clothing, inflatable toys, underwater sports equipment, medical equipment, fitness equipment, car seat materials, umbrellas, suitcases, wallets and so on. TPU film is widely used in sports shoes: trademark decoration of soles and uppers, airbags, air cushions, oil bags and so on. At present, 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 printed and colored by screen printing, and then molded at high frequency and glued to the upper for decoration to achieve special decorative effects. Secondly, the waterproof and moisture-permeable TPU film is used with the cloth for shoe materials to achieve the waterproof and moisture-permeable effect. Attention should be paid to the injection molding of TPU plastic raw materials: the main reasons for all kinds of bad phenomena in injection molding are: 1 differences in the performance of plastic raw materials, improper setting of molding conditions such as temperature, pressure and firing rate, defects in the design or manufacture of molding dies, poor design of the shape and thickness of molded products, improper selection of injection molding machines, and insufficient production capacity. In fact, the reasons for poor injection molding are not simple, usually caused by the above factors, and the determination of the reasons depends on the experience and technology of the operators. It is suggested that relevant professionals can be consulted before processing to reduce the loss cost.