Title:
NON-WOVEN CLOTH, LAYERED NON-WOVEN CLOTH COMPRISING SAID NON-WOVEN CLOTH, AND COMPOSITE SOUND-ABSORBING MATERIAL IN WHICH LAYERED NON-WOVEN CLOTH IS USED AS SKIN MATERIAL
Document Type and Number:
WIPO Patent Application WO/2020/122205
Kind Code:
A1
Abstract:
Provided are a non-woven cloth and a layered non-woven cloth that are preferred as a skin material for a composite sound-absorbing material, which has excellent moldability and exceptional shape stability, and with which it is possible to achieve an adequate sound-absorption effect even in thin low-weight regions. The present invention pertains to: a non-woven cloth having a layered structure in which at least one ultrafine fiber layer (M) having an average fiber diameter of 0.3-7 µm and at least one continuous long fiber layer (S) having an average fiber diameter of 10-30 µm are integrated, wherein the non-woven cloth is characterized in that the adhesion area ratio of the ultrafine fiber layer (M) and the continuous long fiber layer (S) is 45-80%; a method for manufacturing the non-woven cloth; a layered non-woven cloth in which two or more layers of the non-woven cloth are layered; and a composite sound-absorbing material in which the non-woven cloth or the layered non-woven cloth, and an open-cell resin foam body or a fiber porous material that is a sound-absorbing material, are layered.
Inventors:
YAMAMURO SHINYA (JP)
OKAMURA CHIE (JP)
OBI RUMINA (JP)
SHIOTA EIJI (JP)
KATO KAZUFUMI (JP)
NAKANISHI YASUO (JP)
OKAMURA CHIE (JP)
OBI RUMINA (JP)
SHIOTA EIJI (JP)
KATO KAZUFUMI (JP)
NAKANISHI YASUO (JP)
Application Number:
PCT/JP2019/048802
Publication Date:
June 18, 2020
Filing Date:
December 12, 2019
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
D04H3/14; B32B5/26; D04H3/016; G10K11/16; G10K11/168
Domestic Patent References:
| WO2019124231A1 | 2019-06-27 |
Foreign References:
| JP2008142911A | 2008-06-26 | |||
| JP2012045509A | 2012-03-08 | |||
| JP2013163869A | 2013-08-22 | |||
| JP2014037647A | 2014-02-27 | |||
| JP2002069824A | 2002-03-08 | |||
| JP2019151963A | 2019-09-12 | |||
| JP2015121631A | 2015-07-02 | |||
| JP4574262B2 | 2010-11-04 | |||
| JP3705419B2 | 2005-10-12 | |||
| JP2009145425A | 2009-07-02 | |||
| JP5603575B2 | 2014-10-08 | |||
| JP2013163869A | 2013-08-22 |
Other References:
See also references of EP 3896205A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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