Patent · US Expired

Process for the production of high strength yarns by spin-stretching and yarns produced by the process, especially from polyamide-6 and polyester filaments

US4374797A · kind A · utility

9Cited by

7References

12Claims

0Family size

Assignee

Davy McKee Aktiengesellschaft · DE

Inventors

Gunter Koschinek · Dietzenbach, DE
Dietmar Wandel · Hanau, DE

Key dates

Filing date	Jul 9, 1981
Grant date	Feb 22, 1983
Priority date	—
Expiry date	Jul 9, 2001

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01D5/16
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An improved process for the spin-drawing of high-tenacity, technical-grade yarns is disclosed. The process produces yarns of high industrial quality having a low break elongation and low reference elongation, or a low heat shrinkage and low reference elongation. The process is especially suitable for yarns of polyamide and polyester.

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