Patent · US Expired

Non-woven fabric with wick action

US4413032A · kind A · utility

38Cited by

1References

5Claims

0Family size

Assignee

Carl Freudenberg · DE

Inventors

Ludwig Hartmann · Wilmington, US
Ivo Ruzek · Kaiserslautern, DE

Key dates

Filing date	Oct 6, 1981
Grant date	Nov 1, 1983
Priority date	—
Expiry date	Oct 6, 2001

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/2492
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A surface treated, non-woven fabric covering for absorbent cellulose materials, and a method for its manufacture, wherein polymer fibers are coated with an effective amount of a wetting agent which can be chemisorbed on cellulose; the addition of the wetting agent taking place before extrusion in the spinning process, or at any point of manufacture including after the non-woven fabric covering has been finished; the wetting agent being, in the preferred embodiment, a cationic surfactant.

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