Title:
CELLULOSE FIBER MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/145275
Kind Code:
A1
Abstract:
Provided are: a cellulose fiber manufacturing method for suppressing the occurrence of thread breakage in a spinning step and unevenness in the physical properties of obtained fibers, thus enabling stable spinning; and cellulose fibers that are highly strengthened, in which fibrillation is suppressed, and that have a pleasant texture. The present invention provides a cellulose fiber manufacturing method including the following steps: a solution preparation step for dissolving cellulose in a mixed solvent of an aprotic polar solvent and a quaternary onium salt; a discharge step for discharging the obtained solution in a fibrous form through a spinneret, the moisture content of the solution at the time of discharging falling within the range from 0.05 mass% to 8 mass%; and a solidification step for solidifying the discharged fibers in a water-based solidification bath containing water and the mixed solvent.
Inventors:
JONO KEISUKE (JP)
OGAWA YUKI (JP)
OGAWA YUKI (JP)
Application Number:
PCT/JP2021/047094
Publication Date:
July 07, 2022
Filing Date:
December 20, 2021
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
D01F2/02
Domestic Patent References:
| WO2012128315A1 | 2012-09-27 |
Foreign References:
| JPS60144332A | 1985-07-30 | |||
| JPS54151613A | 1979-11-29 | |||
| JP2013538246A | 2013-10-10 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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