Method for cleaning plastic waste

A method for cleaning pre-comminuted plastic waste, in particular plastic flakes, comprising:

• pretreating pre-comminuted plastic waste using a pretreatment apparatus, wherein the pretreating comprises,
• at least one of (i) heating the pre-comminuted plastic waste with a heating apparatus (56) of the pre-treatment apparatus to a cleaning temperature, and (ii) adding at least one cleaning additive and mixing the plastic waste with the at least one cleaning additive by the pretreatment apparatus,
• cleaning pre-comminuted, pretreated plastic waste output from the pretreatment apparatus in a cleaning apparatus, wherein the cleaning comprises,
• directing the pre-comminuted, pretreated plastic waste together with a cleaning liquid through a working gap defined between mutually facing working surfaces of two cleaning tools comprising a plurality of cleaning teeth, wherein the two cleaning tools are rotatably driven relative to each other and impurities are removed from the pre-comminuted, pretreated plastic waste by friction;
• and
• drying pre-comminuted, cleaned plastic waste output from the cleaning apparatus, wherein the drying is done by a drying apparatus.