Continuous preparation method of cellulose fibers
US12247323B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Nov 19, 2020 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Jul 27, 2041 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2201/28
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a continuous preparation method of cellulose fibers, in which a forming tension of 0.1 to 1.9 cN/dtex is applied to a fine solution stream obtained by extrusion through a spinneret plate and air gap cooling, then the fine solution stream is fed into a coagulating bath at a speed of 80 to 1000 m/min, a traction tension of 0.075 to 1.5 cN/dtex is continued to be applied to washed fibers in a water washing system behind the coagulating bath, and finally, the washed fibers are fed into a post-treatment system for continuous and efficient spinning of finished fibers at a speed of 80 to 1000 m/min.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.