Patent · US Active

Bicomponent fiber

US8389426B2 · kind B2 · utility

2Cited by

4References

37Claims

0Family size

Assignee

Trevira GmbH · DE

Inventors

Jorg Dahringer · Bobingen, DE
Bernd Blech · Bobingen, DE
Werner Stefani · Schwabmünchen, DE
Werner Grasser · Stadtbergen, DE
Mehmet Demirors · Terneuzen, NL
Gert J. Claasen · Richterswil, CH

Key dates

Filing date	Jan 4, 2010
Grant date	Mar 5, 2013
Priority date	—
Expiry date	Jan 2, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/641
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a new bicomponent fiber, a nonwoven fabric comprising said new bicomponent fiber and sanitary articles made therefrom. The bicomponent fiber contains a polyethylene-based resin forming at least part of the surface of the fiber longitudinally continuously and is characterized by a Co-monomer Distribution Constant greater than about 45, a recrystallization temperature between 85° C. and 110° C., a tan delta value at 0.1 rad/sec from about 15 to 50, and a complex viscosity at 0.1 rad/second of 1400 Pa.sec or less. The nonwoven fabric comprising the new bicomponent fiber according to the instant invention are not only excellent in softness, but also high in strength, and can be produced in commercial volumes at lower costs due to higher thoughputs and requiring less energy.

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