Co-spun filament within a hollow filament and spinneret for production thereof
US4861661A · kind A · utility
19Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1988 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Jan 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2975
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A hollow fiber which contains within the hollow a co-spun hollow or solid filament. The solid filament is formed of polymer that can distribute energy within the hollow fiber while a co-spun hollow inner filament can also act as a vessel for transportation or separation of fluids. Spinnerets for co-spinning such filaments are of one piece construction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.