Title:
PRODUCTION METHOD FOR NANOFIBER AGGREGATES, PRODUCTION APPARATUS FOR NANOFIBER AGGREGATES, AND NANOFIBER AGGREGATES
Document Type and Number:
WIPO Patent Application WO/2020/189791
Kind Code:
A3
Abstract:
[Problem] To provide a production method for nanofiber aggregates having high oil absorption capacity and oil retention capacity, a production apparatus for the nanofiber aggregates, and nanofiber aggregates having high oil absorption capacity. [Solution] The present invention pertains to a production method and production apparatus for nanofiber aggregates produced and stretched into a fine-diameter fibrous shape by spraying a high-temperature, high-pressure gas from gas discharge ports into a polymer solution discharged from a solution discharge port. The nanofiber aggregates are collected into fine-diameter fibers in a high-temperature, high-pressure gas wind force by discharging secondary high-pressure air from high-pressure air blowing discharge ports in an intersecting pattern into a nanofiber flow during production and stretching. Further provided, as an effect, are nanofiber aggregates: having the characteristic that the distribution of fiber diameters thicker than the central fiber diameter and the distribution of fiber diameters thinner than the central fiber diameter are equal or better; and having excellent oil absorption capacity and oil retention capacity.
Inventors:
SOTA HIROYOSHI (JP)
Application Number:
PCT/JP2020/012549
Publication Date:
November 12, 2020
Filing Date:
March 19, 2020
Export Citation:
Assignee:
M TECHX INC (JP)
International Classes:
D04H3/016; D01D5/04; D01D5/08; D04H3/16
Domestic Patent References:
| WO2019049866A1 | 2019-03-14 | |||
| WO2019004407A1 | 2019-01-03 |
Foreign References:
| JP2016183435A | 2016-10-20 | |||
| JP2017226927A | 2017-12-28 |
Other References:
WU, WEI ET AL.: "Investigation of Production of Nano Fiber Non-woven Fabric and Its Base Features for Applications", JSME PROCEEDINGS, 13 March 2017 (2017-03-13), pages 130, XP009518654, DOI: 10.1299/jsmekansai.2017.92.603
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