Process and apparatus for making multi-layered, multi-component filaments
US6773531B2 · kind B2 · utility
1Cited by
19References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2001 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | May 21, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/731
- 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 comprising an orthogonal beam having disposed within said beam multiple polymer inlet passages each communicating with separate multiple coat hanger distribution manifolds, separate filters connected downstream of each coat hanger distribution manifold, a spinneret connected downstream of said filters with separate polymer flow passages communicating with separate exit orifices for spinning of said multi-layered filaments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.