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 (JP)
FUJISAWA IKUMA (JP)
MORI TADASHI (JP)
MORIKAWA SHU (JP)
FUJISAWA IKUMA (JP)
MORI TADASHI (JP)
MORIKAWA SHU (JP)
Application Number:
PCT/JP2018/024069
Publication Date:
January 03, 2019
Filing Date:
June 25, 2018
Export Citation:
Assignee:
NICHIAS CORP (JP)
International Classes:
G10K11/168; B32B5/18; B32B9/00; B60R13/08; B62D25/08; F02B77/13; G10K11/16
Domestic Patent References:
| WO2014141418A1 | 2014-09-18 |
Foreign References:
| JP2011064167A | 2011-03-31 | |||
| JP2011156897A | 2011-08-18 |
Attorney, Agent or Firm:
ASHITABA INTERNATIONAL PATENT OFFICE (JP)
Download PDF: