Patent · US Expired

Hydroentangled nonwoven material

US7432219B2 · kind B2 · utility

49Cited by

6References

13Claims

0Family size

Assignee

SCA HYGIENE PRODUCTS AB · SE

Inventors

Mikael Strandqvist · Lindome, SE
Anders Stralin · Torslanda, SE
Lars Fingal · Gothenburg, SE
Hannu Ahoniemi · Gothenburg, SE

Key dates

Filing date	Nov 1, 2004
Grant date	Oct 7, 2008
Priority date	—
Expiry date	Mar 28, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/698
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An improved hydroentangled well integrated composite nonwoven material, including a mixture of continuous filaments, synthetic staple fibers, and natural fibers which has a reduced twosidedness and an improved textile feeling. The synthetic staple fibers should have a length of 3 to 7 mm, and preferably there should be no thermal bondings between the filaments. The method of producing such a nonwoven material is also disclosed. The nonwoven includes a mixture of 10-50 w-% continuous filaments preferably chosen from polypropylene, polyesters and polylactides, 5-50 w-% synthetic staple fibers chosen from polyethylene, polypropylene, polyesters, polyamides, polylactides, rayon, and lyocell, and 20-85 w-% natural fibers, preferably pulp.

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