Patent · US Active

Production of UHMWPE sheet materials

US7758797B2 · kind B2 · utility

4Cited by

53References

22Claims

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	Jul 21, 2006
Grant date	Jul 20, 2010
Priority date	—
Expiry date	Dec 23, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2323/06
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

UHMWPE panels of large width may be prepared by a continuous ram extrusion process by employing a slit die which preferably narrows from both sides in a direction transverse to the machine direction, and/or which employs a plurality of transversely positioned cooling zones located on the top and the bottom of the die, proximate the exit thereof. The panel exits the die at a temperature lower than the crystalline melt temperature.

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