Title:
吸音材
Document Type and Number:
Japanese Patent JP6524133
Kind Code:
B2
Abstract:
The present invention aims to provide a sound-absorbing material having sound absorption performance with an average sound absorption coefficient of 0.65 or more in the frequency domain of 800 to 2000 Hz. The present invention relates to a sound-absorbing material including: a fiber layer including a plurality of holes open to a surface thereof and having a thickness of 3 mm or more; and an inorganic material layer formed on the surface of the fiber layer, the holes being blind holes each penetrating through the inorganic material layer and having a bottom inside the fiber layer.
Inventors:
Daisuke Suzuki
Yasutaka Ito
Nakamura friendship
Oshika
Yasutaka Ito
Nakamura friendship
Oshika
Application Number:
JP2017059649A
Publication Date:
June 05, 2019
Filing Date:
March 24, 2017
Export Citation:
Assignee:
IBIDEN CO.,LTD.
International Classes:
G10K11/16; B32B9/00; B60R13/08; F01N1/24; F02B77/13; G10K11/162
Domestic Patent References:
| JP2009039989A | ||||
| JP2000034937A | ||||
| JP2000089767A | ||||
| JP2005088873A | ||||
| JP59089916U |
Attorney, Agent or Firm:
Atomi International Patent Office