Patent · US Active

Production of UHMWPE sheet materials

US7980839B2 · kind B2 · utility

4Cited by

53References

35Claims

0Family size

Assignee

QUADRANT EPP AG · CH

Inventors

Joseph V. Gregg · Warsaw, US
Wesley Allen Kohler · Ossian, US
Lyle D. Berning · Monroeville, US

Key dates

Filing date	Mar 23, 2010
Grant date	Jul 19, 2011
Priority date	—
Expiry date	Mar 23, 2030

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2007/002
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Wide panels of UHMWPE having exceptional flatness and surface quality are ram extruded through a slit die equipped with a plurality of individually adjustable cooling zones proximate the panel exit slit and transverse to the machine direction, which cool the panel while the panel is restrained by a back pressure device and preferably a vertical movement restraint. The process is robust and can be run for long product campaigns.

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