Title:
NONWOVEN FABRIC, AND METHOD FOR MANUFACTURING NONWOVEN FABRIC
Document Type and Number:
WIPO Patent Application WO/2021/172025
Kind Code:
A1
Abstract:
Provided are a nonwoven fabric, of which the linear diameter is thin, the relative standard deviation of pore diameter distribution is small, and the pore diameter is large, and a nonwoven fabric manufacturing method with which it is possible to manufacture such a nonwoven fabric. A nonwoven fabric manufacturing facility (20) comprises a fiber aggregate manufacturing step (21), and a heating-stretching step (22). In the fiber aggregate manufacturing step (21), fibers (11) formed using an electrospinning method are collected, and a fiber aggregate (60) is formed. In a heating-stretching step (22), the fiber aggregate (60) is stretched while being heated to or above the melting point of the fiber and a nonwoven fabric (10) is formed. The average pore diameter of the formed nonwoven fabric (10) is 15 μｍ or larger, the relative standard deviation of pore diameter distribution is 0.1 or smaller, and the average linear diameter of the fiber is 3 μm or smaller.
Inventors:
UMEMORI KENICHI (JP)
YOSHIDA SHUNICHI (JP)
YOSHIDA SHUNICHI (JP)
Application Number:
PCT/JP2021/005054
Publication Date:
September 02, 2021
Filing Date:
February 10, 2021
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
D04H1/4258; D01D5/04; D01F2/00; D04H1/728
Domestic Patent References:
| WO2019187827A1 | 2019-10-03 | |||
| WO2010073958A1 | 2010-07-01 |
Foreign References:
| JP2009207430A | 2009-09-17 | |||
| JP2012046844A | 2012-03-08 | |||
| JP2013185273A | 2013-09-19 | |||
| JP2015010289A | 2015-01-19 |
Attorney, Agent or Firm:
KYORITSU INSTITUTE (JP)
Download PDF: