Patent · US Expired

Apparatus for extrusion of plastic and/or rubber mixtures

US5304053A · kind A · utility

8Cited by

9References

4Claims

0Family size

Assignee

Paul Troester Maschinenfabrik · DE

Inventors

Hans-Joachim Gohlisch · Hannover, DE
Wilfried Baumgarten · Pattensen, DE

Key dates

Filing date	May 8, 1992
Grant date	Apr 19, 1994
Priority date	—
Expiry date	May 8, 2012

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C48/535
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Apparatus for extruding plastic and/or rubber material has a screw extruder, which plasticizes the material and delivers it to a gear pump which develops sufficient pressure for extrusion of the material through an extrusion head. The apparatus is characterized by the fact that the axes of gears of the gear pump and the axis of the screw of the extruder are parallel to one another. The housing of the gear pump has a side opening into which a cylindrical bushing and the screw of the extruder extend so that the material is delivered by the extruder directly to the gear pump as a non-oriented plasticized mass. The extrusion head may be a transverse extrusion head with an axis parallel to the axes of the gear wheels of the gear pump and the axis of the screw of the extruder. A second like extrusion apparatus including a screw extruder and a gear pump may be connected to an opposite side of the extrusion head.

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