Title:
WET NONWOVEN FABRIC CONTAINING META-ARAMID AND POLYPHENYLENE SULFIDE, AND MULTILAYER SHEET OF SAME
Document Type and Number:
WIPO Patent Application WO/2018/230391
Kind Code:
A1
Abstract:
This wet nonwoven fabric contains meta-aramid fibers and polyphenylene sulfide short fibers in order to provide an electrical insulation paper which has excellent dielectric breakdown strength, excellent dimensional stability against moisture absorption and excellent thermal dimensional stability, while exhibiting excellent tear strength and excellent wear durability, and an electrical insulation sheet which uses this electrical insulation paper. With respect to this wet nonwoven fabric, the mixing rate of polyphenylene sulfide short fibers that are at least partially fusion bonded is 40% or less; and the dielectric breakdown strength of this wet nonwoven fabric is 17 kV/mm or more.
Inventors:
HARADA MASARU (JP)
TSUCHIKURA HIROSHI (JP)
TSUCHIKURA HIROSHI (JP)
Application Number:
PCT/JP2018/021510
Publication Date:
December 20, 2018
Filing Date:
June 05, 2018
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
D21H13/20; D21H13/26; D21H27/12; H01B3/52; H01M50/414; H01M50/423; H01M50/454; H01M50/489; H01M50/443
Domestic Patent References:
| WO2017006807A1 | 2017-01-12 |
Foreign References:
| JPH02257522A | 1990-10-18 | |||
| JPH0247389A | 1990-02-16 | |||
| CN106087529A | 2016-11-09 | |||
| JPH09139113A | 1997-05-27 | |||
| JP2016125185A | 2016-07-11 | |||
| JPH07189169A | 1995-07-25 | |||
| JPH0247389U | 1990-03-30 | |||
| JP2001040597A | 2001-02-13 | |||
| JP2009277653A | 2009-11-26 |
Other References:
See also references of EP 3640398A4
Download PDF: