Polyurethane is called polyurethane, which is a general term for macromolecular compounds containing repeated carbamate group (nhcoo) in the main chain. In addition to carbamate, polyurethane macromolecules can also contain ether, ester, urea, biuret, urea carbamate and other groups. According to the different raw materials used, there can be different products of different properties, generally polyester type and polyether type. It can be used to make plastic, rubber, fiber, hard and soft foam plastics, adhesives and coatings.

Polyurethane screen is widely used and more applicable. It is suitable for any type of vibrating screen and can be made by measuring machine. Polyurethane screen plate is used in hydropower station, building materials and other metal mining. The screening of various materials within the range of 0.1mm-170mm does not affect the screening efficiency, whether dry or wet. The advantages of polyurethane screen are fully demonstrated for dehydration and media screening within the range of 0.5m-3mm. The product is water resistant, corrosion resistant and aging resistant, and easy to replace and maintain. Polyurethane has a small density (1.32kg/ m3), and is lighter than metal screen surface, which can reduce the production unit consumption, so it can meet the needs of large-scale development of screen machine.