Title:
COVER MATERIAL FOR ACOUSTIC INSULATION AND ENGINE UNIT
Document Type and Number:
WIPO Patent Application WO/2018/159504
Kind Code:
A1
Abstract:
Provided is a novel cover material for acoustic insulation that has heat resistance and that even if thin has sufficient acoustic insulation performance. A cover material for acoustic insulation characterized in that a first elastic porous body, a porous film having an open hole ratio of 0.1-5% and an open hole diameter of 50-500 µm, and a second elastic porous body are layered in this order, a surface material preferably also being provided to at least one of the outer surface side of the first elastic porous body and the outer surface side of the second elastic porous body.
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Inventors:
ARAI TAKESHI (JP)
FUJISAWA IKUMA (JP)
MORI TADASHI (JP)
FUJISAWA IKUMA (JP)
MORI TADASHI (JP)
Application Number:
PCT/JP2018/006788
Publication Date:
September 07, 2018
Filing Date:
February 23, 2018
Export Citation:
Assignee:
NICHIAS CORP (JP)
International Classes:
F02B77/13; B32B5/32; B60R13/08
Foreign References:
| JP2009090845A | 2009-04-30 | |||
| JP2014031087A | 2014-02-20 | |||
| JP2011064167A | 2011-03-31 | |||
| JP2006137160A | 2006-06-01 |
Attorney, Agent or Firm:
ASHITABA INTERNATIONAL PATENT OFFICE (JP)
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