Patent · US Expired

Discontinous polyethylene terephthalate fibres and method for producing the same

US6645621B1 · kind B1 · utility

1Cited by

4References

8Claims

0Family size

Assignee

Lurgi Zimmer GmbH · DE

Inventors

Ingo Cordes · Maintal, DE
Christian Guido KELLNER · Maintal, DE
Ulrich Mirwaldt · Offenbach am Main, DE
Dietmar Wandel · Hanau, DE

Key dates

Filing date	May 21, 2002
Grant date	Nov 11, 2003
Priority date	—
Expiry date	May 21, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2969
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

PTT staple fibers which are characterised by a novel combination of properties. In combination with novel stress-strain properties and modulus parameters, staple fibers or textiles or home textiles having extremely desirable aesthetics and service quality are obtained.Economical two-stage process for the production of PTT staple fibers. The melt spinning is carried out at a high polymer throughput and a spinning take-off speed of at least 600 m/min. In a separate fiber drawing frame, the stretching, heat-setting, crimping and drying are carried out.

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