General mixed plastic waste often contains PET, ABS, PS, PA, HDPE, LDPE, PP, PC and other materials, however, plastic recycling is to pay attention to the cleanliness of plastics, that is, the purification degree of waste plastic materials, after all, the material of a single no debris plastic is more suitable for the next step of recycling, such plastic value is also higher. Therefore, sorting the mixed plastics according to different materials and further removing impurities according to specific requirements is the key to obtaining high-quality recycled plastics.