Title:
SOUNDPROOFING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/022245
Kind Code:
A1
Abstract:
[Problem] To provide a means capable of exhibiting high soundproofing performance across a broad range of frequencies of 2000 Hz or less. [Solution] A soundproofing material comprising an elastic sheet and a support part that holds the sheet and that partitions the sheet into partitioned sections, wherein the rigidity (k) of the sheet and the surface density (m) of the sheet in the partitioned sections satisfy the relationship of an Equation 1.
Inventors:
HORIBE NORIFUMI (JP)
MIURA SUSUMU (JP)
MIURA SUSUMU (JP)
Application Number:
PCT/JP2018/028326
Publication Date:
January 31, 2019
Filing Date:
July 27, 2018
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
G10K11/16; B32B3/12; G10K11/168; G10K11/172; B60R13/08
Foreign References:
| JPS6342863A | 1988-02-24 | |||
| JP2010085818A | 2010-04-15 | |||
| JP2017146066A | 2017-08-24 | |||
| JP2018136411A | 2018-08-30 |
Other References:
SUI, NI ET AL.: "A lightweight yet sound-proof honeycomb acoustic metamaterial", APPLIED PHYSICS LETTERS, vol. 106, no. 17, 27 April 2015 (2015-04-27), pages 106, XP012197002, Retrieved from the Internet
NI SUI ET AL., APPLIED PHYSICS LETTERS, vol. 106, 2015, pages 171905
See also references of EP 3660833A4
NI SUI ET AL., APPLIED PHYSICS LETTERS, vol. 106, 2015, pages 171905
See also references of EP 3660833A4
Attorney, Agent or Firm:
HATTA & ASSOCIATES (JP)
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