The application of single-plate screen changers in the plastics processing industry is very extensive, mainly manifested in the following aspects: I. Plastic Extrusion Molding Production of Plastic Films: In the production process of plastic films (such as PP, PE, PET, etc.), single-plate screen changers are used to filter out impurities in the raw materials, ensuring the purity and quality of the films. By enabling rapid screen changes, the filters can be replaced without stopping the productio