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Title:
COVER MATERIAL FOR ACOUSTIC INSULATION, AND ENGINE UNIT
Document Type and Number:
WIPO Patent Application WO/2019/004151
Kind Code:
A1
Abstract:
Provided is a novel cover material for acoustic insulation that is heat-resistant and has adequate acoustic insulation performance even when thickness is low. A cover material for acoustic insulation, characterized in that a first porous film having an aperture rate of 0.1-5.0% and a pore diameter of 100-1000 μm, one or more elastic porous body layers, and a second porous film having an aperture rate of 0.1-5.0% and a pore diameter of 100-1000 μm are layered in the stated order.

Inventors:
FUJISAWA Ikuma (6-1 Hatchobori 1-chome, Chuo-k, Tokyo 55, 〒1048555, JP)
ARAI Takeshi (6-1 Hatchobori 1-chome, Chuo-k, Tokyo 55, 〒1048555, JP)
Application Number:
JP2018/024063
Publication Date:
January 03, 2019
Filing Date:
June 25, 2018
Export Citation:
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Assignee:
NICHIAS CORPORATION (6-1 Hatchobori 1-chome, Chuo-ku Tokyo, 55, 〒1048555, JP)
International Classes:
G10K11/168; B32B5/32; B60R13/08; G10K11/16
Foreign References:
JP2000081888A2000-03-21
JP2005121994A2005-05-12
JPS60135997A1985-07-19
JP2006208859A2006-08-10
Attorney, Agent or Firm:
ASHITABA INTERNATIONAL PATENT OFFICE (Kaede Bldg. 2F, 2-3-6 Uchikanda, Chiyoda-k, Tokyo 47, 〒1010047, JP)
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