Title:
FIBER PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/054354
Kind Code:
A1
Abstract:
The present invention provides a fiber production method suitable for suppressing outer diameter changes. The production method according to an embodiment of the present invention includes: discharging a softened linear body 1 from a nozzle 10; and winding the linear body 1 such that the linear body passes through a cooling part 20 to which a cooling fluid 50 is supplied, thereby obtaining a fiber 5. The cooling part 20 has a filter 40 for straightening flow of the cooling fluid 50. In the cooling part 20, the temperature of the cooling fluid 50 is substantially constant in a direction in which the linear body 1 is moved. In the production method according to the embodiment, an index M calculated by formula (I) is 1.52 or less.
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Inventors:
MICHIHIRA HAJIME (JP)
KUMANO TAKASHI (JP)
TAKAGI TETSUYA (JP)
NAGAYA YUTO (JP)
KUMANO TAKASHI (JP)
TAKAGI TETSUYA (JP)
NAGAYA YUTO (JP)
Application Number:
PCT/JP2021/021456
Publication Date:
March 17, 2022
Filing Date:
June 04, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
D01D5/088; D01D5/34; G02B6/02
Domestic Patent References:
| WO2010119696A1 | 2010-10-21 | |||
| WO2019044703A1 | 2019-03-07 |
Foreign References:
| JP2009186772A | 2009-08-20 | |||
| JPS63159235A | 1988-07-02 | |||
| JPH11337745A | 1999-12-10 | |||
| JPH063532A | 1994-01-14 | |||
| US4807964A | 1989-02-28 |
Attorney, Agent or Firm:
KAMADA Koichi et al. (JP)
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