Production line features: through 2 or 3 sets of extruder co-extrusion, will be different temperature range and hardness range of TPU raw materials, one-time composite extrusion molding. Compared with the traditional, the composite process, the high-temperature, low-temperature film off-line recomposite, appears to be more economical, more environmentally friendly, more efficient. Products are widely used in water stop, shoes, clothing, bags, stationery, sports equipment and so on.