The invention discloses a washing and purification system and method for recycled thin-film waste plastics. Waste materials are shredded by mechanical shearing and initially washed and precipitated to remove heavy impurities. Multi-drum washing and separation equipment performs multi-stage cleaning with adjustable upward water flow velocity at each water inlet, efficiently removing light contaminants and separating materials with different specific gravities. A twin-screw impregnator shears and rubs plastic fragments into uniform small pieces and granular materials for drying and storage. This technology realizes comprehensive utilization of paper mill solid waste and separate recycling of waste paper fiber and waste plastics. It supports automated large-scale production with an overall utilization rate above 90%, reduces water consumption by 50% to 80% through water recycling, lowers environmental pollution, ensures continuous production and saves workshop space.

Area Code: CN

Application Number: CN201610203631.2