Process of making a crimped multicomponent fiber web
US6454989B1 · kind B1 · utility
106Cited by
66References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1999 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Nov 10, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H3/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides continuously crimped propylene polymer nonwoven fabrics as well as processes for forming crimped multicomponent propylene polymer fibers by melt-attenuating extruded multicomponent fibers with heated or unheated air wherein the fibers spontaneously crimp without the need for additional heating and/or stretching steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.