| abstract |
The invention relates to a device for extruding molding compositions having at least two screws (1) accommodated in a housing (3), comprising at least one feed zone, one conversion zone and one discharge zone, the zones at least partially overlapping, and at least one degassing opening (5 ). The degassing opening (5) saves a partial area in the housing (3) via at least two intermeshing screws (1). In each case in the engagement region (11) of the screws (1), a web (9) is formed in the degassing opening (5). Between the at least one screw (1a) which rotates in the region of the degassing opening (5) in the direction of the web (9), and the web, a gap (13) is formed whose gap width decreases in the direction of rotation of the screw (1a). |