Process and apparatus for making multi-layered, multi-component filaments
US6605248B2 · kind B2 · utility
4Cited by
14References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2001 |
| Grant date | Aug 12, 2003 |
| Priority date | — |
| Expiry date | May 21, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D5/32
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a process for forming a plurality of multi-layered filaments from multiple thermoplastic synthetic polymers and an apparatus containing a melt spinning beam which comprises multiple polymer inlet passages each communicating with separate multiple coat hanger distribution manifolds, separate filters connected downstream of each coat hanger distribution manifold, a combining manifold connected downstream of said filters and spinneret orifices connected downstream of said combining manifold for spinning of said multi-layered filaments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.