Patent ID: 7866876
Filing Date: 2011-01-11
Classification: B29C

Abstract:
1. A device for extruding thermoplastic synthetic products comprising a housing mounting an extruder screw, the screw including a plasticizing section on its feed side, a degassing section positioned arranged upstream of a discharge section of the screw and an oppositely operating feed screw flight between the plasticizing section and the degassing section, at least one flow channel including a melt filter and bridging over the oppositely operating feed screw flight, characterized in that the extruder screw ( 2 ) includes a further feed screw flight ( 7 ) operating in the same direction and arranged between the oppositely operating feed screw flight ( 3 ) and an opening ( 6 ) of the flow channel ( 5 ) at the discharge section of the screw, and at least one degassing opening ( 8 ) in the housing ( 1 ) in a transitional area between the oppositely operating feed screw flight ( 3 ) and the further feed screw flight ( 7 ) operating in the same direction.