Patent · US Active

Drive arrangement in a degassing extruder

US8534903B2 · kind B2 · utility

0Cited by

9References

9Claims

0Family size

Assignee

Evonik Röhm GmbH · DE

Inventors

Ruediger Carloff · Darmstadt, DE
Joachim Heid · Reichelsheim, DE
Heinz Vetter · Weiterstadt, DE

Key dates

Filing date	Aug 12, 2008
Grant date	Sep 17, 2013
Priority date	—
Expiry date	May 28, 2030

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C48/515
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a vented extruder (1) for the devolatilization of a polymer material. The vented extruder (1) encompasses at least one drive (4), at least one gearbox (5), at least one rotatably driven extruder screw (3), at least one first material feed (6) and at least one extrudate outlet (13). A feature of the vented extruder (1) according to the invention is that the drive, encompassing drive (4) and gearbox (5), has been provided in the region of that end of the extruder screw (3) that is downstream in relation to the direction of conveying of the polymer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.