Spinneret for a co-spun filament within a hollow filament
US4743189A · kind A · utility
19Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1986 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Jun 27, 2006 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D5/34
- 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.