Process for the manufacture of cellulose-based fibers
US9121111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2009 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Nov 26, 2032 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F2/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for the spinning of a fiber comprising cellulose nano-fibrils being aligned along the main axis of the fiber from a lyotropic suspension of cellulose nano-fibrils, said nano-fibril alignment being achieved through extension of the extruded fiber from a die, spinneret or needle, wherein said fiber is dried under extension and the aligned nano-fibrils aggregate to form a continuous structure. The fibrils used in this method can be extracted from a cellulose-rich material such as wood. The invention also related to a cellulose-based fiber obtained according to this method and to a cellulose fiber which contains at least 90% wt of crystallized cellulose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.