Apparatus for melt-spinning filaments in a yarn forming operation
US7125238B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2005 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Sep 22, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D4/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for melt spinning a plurality of strand-like filaments through a spinneret, which is mounted within a downwardly open receptacle in a nozzle holder. The spinneret includes a housing which is deformed by the entry of the pressurized polymeric melt into an internal diffuser chamber, so as to press the spinneret against the inner wall of the receptacle and thereby seal the melt inlet of the spinneret against the melt outlet in the receptacle. Thus the high pressure forces required for sealing only arise and are active during the operational state, and the spinneret can be otherwise held in the nozzle holder under a minimal securing force which permits the spinneret to be easily loosened and removed for periodic maintenance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.