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Title:
NONWOVEN FABRIC AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/030057
Kind Code:
A1
Abstract:
Provided is a nonwoven fabric having ultrafine fibers and excellent strength during sheet working, and a method for manufacturing the same. This nonwoven fabric is characterized in that the average fiber diameter is 0.8 μm or less, and the volume ratio of fibers having a fiber diameter of 1.0 μm or less is less than 40%. This method for manufacturing nonwoven fabric is a melt-blowing method characterized in that the die temperature is set such that the resin ejection amount per spinning nozzle is 0.01 g/min or higher and the polymer pressure on the die is 2.3 MPa or higher.

Inventors:
ITO, Masashi (Toray Fine Chemicals Co. Ltd., 360, Okaga 3-chome, Matsuyama-sh, Ehime 57, 〒7918057, JP)
TAKEDA, Yuichi (Toray Fine Chemicals Co. Ltd., 360, Okaga 3-chome, Matsuyama-sh, Ehime 57, 〒7918057, JP)
HIRABARA, Takehiko (Toray Fine Chemicals Co. Ltd., 360, Okaga 3-chome, Matsuyama-sh, Ehime 57, 〒7918057, JP)
Application Number:
JP2017/025233
Publication Date:
February 15, 2018
Filing Date:
July 11, 2017
Export Citation:
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Assignee:
TORAY FINE CHEMICALS CO., LTD. (3-1 Kanda-Sudacho 2-chome, Chiyoda-ku Tokyo, 41, 〒1010041, JP)
International Classes:
D04H3/033
Domestic Patent References:
WO2012102398A12012-08-02
WO2012014501A12012-02-02
WO2015171707A12015-11-12
WO2016148174A12016-09-22
Foreign References:
JP2007023391A2007-02-01
JP2009534548A2009-09-24
JP2012510006A2012-04-26
US20080318024A12008-12-25
US20100219138A12010-09-02
Attorney, Agent or Firm:
SAKAI, Masatoshi et al. (SAKAI PATENT OFFICE Athens Shin-Osaka, 3rd FL. 1-15, Nishinakajima 6-chome, Yodogawa-ku, Osaka-sh, Osaka 11, 〒5320011, JP)
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