METHOD FOR PREPARATION OF PLASTIC MATERIALS FOR RECYCLING PURPOSES

摘要

A device for the preparation of plastics material for recycling purposes has a container ( 1 ) with an upper inlet opening ( 10 ) for the material. In the container ( 1 ), at least one tool ( 14 ) rotates about the vertical container axis. This tool feeds the treated material through an outlet opening ( 17 ) which is arranged at the bottom of the container ( 1 ) and to which the housing ( 19 ) of at least one screw ( 21, 22 ) is connected. That side wall ( 28 ) of the feed opening ( 18 ) at which the tool ( 14 ) discharges defines a widening ( 36 ) extending continuously towards the screw axis. This widening ( 36 ) extends over part of the circumference of the screw turns ( 30 ) so that the screw-side edge of this widening ( 36 ) forms an uninterrupted shearing edge ( 39 ) co-operating with the screw turns ( 30 ).