Title:
SOUNDPROOFING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2021/132715
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a soundproofing structure that yields sufficient soundproofing effects even in a case where an adhesive layer is provided, and resists deviation in the frequency band produced by the soundproofing effects. This soundproofing structure: has a sheet-like sheet section and a plurality of projections provided on the sheet section, and at least has an adhesive layer provided on the surface, of the sheet section, on the side opposite that on which the projections are provided; and satisfies formula (1). (1): E_glue/I_glue > 0.5 × (E_membrane/H)
E_glue (MPa): Storage modulus of adhesive layer
I_glue (mm): Average thickness of adhesive layer
E_membrane (MPa): Storage modulus of sheet section and projections
H (mm): Average height of sheet section and projections
Inventors:
UCHIDA NAOYUKI (JP)
INOUE KAZUMA (JP)
NAKAYAMA MASANARI (JP)
INOUE KAZUMA (JP)
NAKAYAMA MASANARI (JP)
Application Number:
PCT/JP2020/049129
Publication Date:
July 01, 2021
Filing Date:
December 28, 2020
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
G10K11/16; C09J7/30; G10K11/168; G10K11/172
Domestic Patent References:
| WO2017135409A1 | 2017-08-10 | |||
| WO2011046120A1 | 2011-04-21 | |||
| WO2010080794A2 | 2010-07-15 |
Foreign References:
| JP2019031899A | 2019-02-28 | |||
| JP2019190046A | 2019-10-31 | |||
| JPH03175022A | 1991-07-30 | |||
| JP2000265593A | 2000-09-26 | |||
| JPH06508938A | 1994-10-06 | |||
| JP2001303691A | 2001-10-31 | |||
| JP2013112766A | 2013-06-10 | |||
| JP2006169446A | 2006-06-29 |
Other References:
M. B. ASSOUARM. SENESIM. OUDICHM. RUZZENEZ. HOU: "Broadband plate-type acoustic metamaterial for low-frequency sound attenuation", APPLIED PHYSICS LETTERS, vol. 101, 2012, pages 173505, XP012165487, DOI: 10.1063/1.4764072
M. OUDICHB. DJAFARI-ROUHANIY. PENNECM. B. ASSOUARB. BONELLO: "Negative effective mass density of acoustic metamaterial plate decorated with low frequency resonant pillars", JOURNAL OF APPLIED PHYSICS, vol. 116, 2014, pages 184504, XP012191811, DOI: 10.1063/1.4901462
M. OUDICHY. LIM. B. ASSOUARZ. HOU: "A sonic band gap based on the locally resonant phononic plates with stubs", NEW JOURNAL OF PHYSICS, vol. 12, 2010, pages 083049
See also references of EP 4083995A4
M. OUDICHB. DJAFARI-ROUHANIY. PENNECM. B. ASSOUARB. BONELLO: "Negative effective mass density of acoustic metamaterial plate decorated with low frequency resonant pillars", JOURNAL OF APPLIED PHYSICS, vol. 116, 2014, pages 184504, XP012191811, DOI: 10.1063/1.4901462
M. OUDICHY. LIM. B. ASSOUARZ. HOU: "A sonic band gap based on the locally resonant phononic plates with stubs", NEW JOURNAL OF PHYSICS, vol. 12, 2010, pages 083049
See also references of EP 4083995A4
Attorney, Agent or Firm:
IP FIRM SHUWA (JP)
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