Patent · US Expired

Process for the production of PBT carpet yarn

US4877572A · kind A · utility

11Cited by

6References

4Claims

0Family size

Assignee

Davy McKee Aktiengesellschaft · DE

Inventors

Peter George Clarke · Exeter, GB
Ulrich Mirwaldt · Offenbach am Main, DE
Dietmar Wandel · Hanau, DE

Key dates

Filing date	Nov 14, 1988
Grant date	Oct 31, 1989
Priority date	—
Expiry date	Nov 14, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S57/908
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A process for the production of high-quality carpet yarn from PBT having an intrinsic viscosity of 0.9 to 1.2 comprising an integrated spinning-draw texturing process, employing a transport speed to the texturing unit of at least 1,800 m/min.

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