Non-round spinneret plate hole
US7637730B2 · kind B2 · utility
1Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 11, 2003 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Oct 21, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D5/23
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention concerns a spinneret plate (1) for manufacturing a nonwoven fabric, having multiple non-round holes, which are similar to trilobal or multiarmed holes (3) in particular, for polymer flow outlet to produce filaments, in which identical holes are positioned in rows offset relative to one another. At least a first row (2) has a positional arrangement of the holes that differs from the positional arrangement of a second row (7) of rows through rotation of the holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.