The influence of screen changer on the quality of plastic recycled materials

　　With the rising price of plastic raw materials, extrusion enterprises have artificially increased the proportion of recycled materials in order to reduce production costs and increase profits. The proportion of recycled materials from some agricultural plastics products reaches 80%~90%. Screen changer is one of the important factors affecting the quality of plastic recycled materials. The extensive use of recycled materials has greatly promoted the development of network changers, brought a broad market for the application of network changers, and put forward new requirements for network screen changers.

　　In the process of plastic extrusion production, some decomposition products will be produced by plasticizing the plastic melt for a long time, and the raw material itself contains some impurities. The existence of these impurities not only affects the quality of products, but also affects the continuity and stability of production. The screen changer is set between the screw head and the extruder head to filter out impurities and foreign substances in the plastic melt and obtain a pure melt.