Extrusion is used in the processing of thermoplastic plastics and rubber. It can be used for batching, granulation, rubber filtration, etc. It can be continuously produced. It can produce various continuous products such as pipes, profiles, sheets (or sheets), films, wire and cable coating, rubber tire tread, inner tube, sealing strip, etc. with high production efficiency. In the production of synthetic resins, extruders can be used as reactors to continuously complete polymerization and molding. In the rubber industry, extruders with different compression ratios can be used to make natural rubber. The compression ratios of extruders with different materials are somewhat different.