公开(公告)号：DE1949489A1

公开(公告)日：1971-04-08

申请号：DE1949489

申请日：1969-10-01

Applicant: BASF AG

Inventor： WILD HANS DR ,  REFFERT RUDI ,  JECKEL GUENTER DIPL-ING ,  BAROWSKI WERNER

IPC: B29C48/76 ,  B29F3/00

Abstract: Extruder comprises two introduction zones, one homogenisation zone. Minor portion of constituents, containing additives, enters first zone, is melted, moves to homogeniser. Major portion, without additives, enters second zone, is heated to polymer softening point, and is maintained at pressure above vapour pressure of volatile constituents. These constituents escape upstream to a low pressure evacuation zone. Both flows are combined in homogeniser and extruder.

公开(公告)号：DE2509744A1

公开(公告)日：1976-09-23

申请号：DE2509744

申请日：1975-03-06

Applicant: BASF AG

Inventor： WILD HANS DIPL CHEM DR ,  JECKEL GUENTER ,  ECHTE ADOLF DIPL CHEM DR ,  ZIZLSPERGER JOHANN DIPL CHEM D ,  REFFERT RUDI ,  THIELEN GUNTER DIPL ING DR

IPC: B29C47/10 ,  B29C48/76 ,  B29B1/10 ,  B29F3/03

Abstract: Incorporation of (I) additives, e.g. fillers, plasticisers, pigments, stabilisers or lubricants, into (II) plastic matls. is affected with simultaneous elimination of volatile components, in a horizontal extruder for heating, mixing, transporting and extruding the mixt. by (a) initially introducing (I) into the extruder (1) in a downwards direction (4) in the advancement direction of the prod. (b) next introducing (II) as a molten mase, soln. or dispersion in an upwards direction (b), and (c) allowing the major part of the volatile components to escape from the extruder by an orifice (8) placed vertically above the feed orifice (b) for (II). Process combines efficient removal of volatiles with rapid mixing, transport and extrusion of the prod. with low heat/energy ratio.