Cellulose acetate tow and method of making same
US7445737B2 · kind B2 · utility
8Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Sep 25, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02G1/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In the manufacture of a fiber tow, particularly cellulose acetate tow, a stuffer box crimper has one roller adapted to induce crimp into the tow. This roller induces crimp by preferentially weakening a portion of the tow. This roller has an axially grooved surface. This roller may be located in the stuffer box crimper or before the stuffer box crimper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.