Fine denier multicomponent fibers
US6878650B2 · kind B2 · utility
15Cited by
86References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2000 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Dec 10, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/681
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method is provided for producing fine denier multicomponent thermoplastic polymer filaments incorporating high melt-flow rate polymers. Multicomponent filaments are extruded such that the high melt-flow rate polymer component is substantially surrounded by one or more low melt-flow rate polymer components. The extruded multicomponent filament is then melt-attenuated with a significant drawing force to reduce the filament diameter and form continuous, fine denier filaments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.