Dual capillary spinneret with single outlet for production of homofilament crimp fibers
US6619947B2 · kind B2 · utility
5Cited by
32References
6Claims
0Family size
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Key dates
| Filing date | Dec 21, 2000 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jul 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/60
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Robust round homofilament fibers are meltspun from a spinneret having two conjoined capillaries of different length to diameter ratio to induce differential shear to produce fiber crimping. Crimping may further be aided by quenching of the fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.