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Title:
SOUNDPROOF COVERING MATERIAL AND ENGINE UNIT
Document Type and Number:
WIPO Patent Application WO/2019/004153
Kind Code:
A1
Abstract:
Provided is a novel soundproof covering material having heat resistance, and sufficient soundproof performance in spite of small thickness. The soundproof covering material is characterized by comprising a laminated material in which a first skin material composed of an inorganic material having a ventilation resistance of 0.3-3.0 kPa·s/m, an elastic porous material layer which has a bulk density of 0.01-0.1g/cm3 and contains, as a constituent fiber, an inorganic fiber having a fiber diameter of more than 3 μm; and a second skin material composed of an inorganic material having a ventilation resistance of 0.3-3.0 kPa·s/m are sequentially laminated.

Inventors:
ARAI Takeshi (6-1 Hatchobori 1-chome, Chuo-k, Tokyo 55, 〒1048555, JP)
FUJISAWA Ikuma (6-1 Hatchobori 1-chome, Chuo-k, Tokyo 55, 〒1048555, JP)
MORI Tadashi (6-1 Hatchobori 1-chome, Chuo-k, Tokyo 55, 〒1048555, JP)
MORIKAWA Shu (6-1 Hatchobori 1-chome, Chuo-k, Tokyo 55, 〒1048555, JP)
Application Number:
JP2018/024069
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; B32B5/18; B32B9/00; B60R13/08; B62D25/08; F02B77/13; G10K11/16
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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