Spinneret for producing circular cross section yarn and process for making the same
US7165963B2 · kind B2 · utility
0Cited by
4References
3Claims
0Family size
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Key dates
| Filing date | Oct 31, 2003 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Jan 5, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D5/253
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A melt extrusion spinneret plate has at least one non-circular capillary orifice for producing at least a single filament of circular cross-sectional shape. This non-circular cross-sectional shape of the extrusion capillary, when used to extrude filaments of circular cross-sectional shape, extends the spinneret wipe life by lessening the amount of thermal deposits, which extends the time between wipe cycles. As a result of increased wipe life, the productivity of the process is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.