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：DE1778292A1

公开(公告)日：1972-03-02

申请号：DE1778292

申请日：1968-04-17

Applicant: BASF AG

Inventor： JECKEL GUENTER DIPL-ING ,  BERGER WOLFGANG DIPL-ING ,  UHR HERMANN ,  WEBER REINHOLD

IPC: B29C44/00 ,  B29C44/50 ,  B32B27/00 ,  B29D27/00

公开(公告)号：DE1778166A1

公开(公告)日：1971-07-29

申请号：DE1778166

申请日：1968-04-03

Applicant: BASF AG

Inventor： GUENTHER WOLFGANG DR ,  JECKEL GUENTER DIPL-ING

IPC: B29C47/10 ,  F16K27/02 ,  B29B5/06

Abstract: Screw extruder fitted with a liner and an injection valve which is located between the feed opening and the die of the extruder for metering liquid additives into a cylinder section of the screw extruder, wherein the cylinder section is divided into two flanged segments and the body of the injection valve is located between the flanges of the segments of the cylinder section and secured to the undivided liner which is embraced by the segments of the cylinder section.