Patent · US Expired

Process of making polyolefin fibers

US6537473B2 · kind B2 · utility

5Cited by

0References

4Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Manfred Raetzsch · Kirchschlag, AT
Ulf Panzer · Ansfelden, AT
Achim Hesse · Dresden, DE
Norbert Reichelt · Ansfelden, AT
Manfred Kirchberger · Eferding, AT
Peter Niedersuess · Linz, AT
Anton Wolfsberger · Linz, AT

Key dates

Filing date	Dec 8, 2000
Grant date	Mar 25, 2003
Priority date	—
Expiry date	Jul 16, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2967
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Polyolefin fibers and polyolefin yarns of high strength and elongation and textile fabrics produced therefrom, which consist of modified propylene polymers, unmodified propylene polymers and adjuvants, are produced by melting the polyolefin mixtures in the extruder, transferring the melt by extrusion pumps to the spinnerets and drawing off the extruded filaments by high-speed galettes and/or winders.

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