Patent · US Expired

Dimensionally stable, high-tenacity non-woven webs and process

US3975224A · kind A · utility

22Cited by

14References

27Claims

0Family size

Assignee

Lutravil Spinnvlies GmbH & Co.

Inventors

Ivo Ruzek · Kaiserslautern, DE
Guenther Worf
Ludwig Hartmann · Wilmington, US
Paul F. Maahs
Lueder Gerking

Key dates

Filing date	Aug 16, 1973
Grant date	Aug 17, 1976
Priority date	—
Expiry date	Aug 16, 1993

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/692
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Dimensionally stable, high-tenacity non-woven webs and process for their manufacture. The non-woven webs of the invention are distinguished by a relative grab-tensile strength of at least 200 p/g/m.sup.2, a breaking extension of not more than 50% and a shrinkage of not more than 1%, as measured at 160.degree.C, and are primarily useful as reinforceing and backing materials in the manufacture of needle-punched and tufted carpets.

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