Title:
INCOMBUSTIBLE SOUND-ABSORBING PANEL
Document Type and Number:
WIPO Patent Application WO/2021/010160
Kind Code:
A1
Abstract:
[Problem] To achieve an incombustible sound-absorbing panel by rendering incombustible a sound-absorbing and sound-shielding sandwich panel containing a combustible as a constitutive material. [Solution] Fine powders from chippings generated during cutting processing of a foam material to be filled into a honeycomb material are introduced in the gaps between the foam material and a sound-absorbing surface material. A flow of, for example, steam generated from a hydrate in a honeycomb material heated in the event of a fire, or the like, causes the chippings to flow to plug the gaps between the fibers in the sound-absorbing surface material, thereby limiting the passage of air flow and also confining the carbon dioxide gas generated from a foam material generated, hence reducing the oxygen amount, so that combustion is inhibited. The amount in which adhesive, which is a combustible, is used is also reduced.
Inventors:
TAKE KOICHI (JP)
Application Number:
PCT/JP2020/025679
Publication Date:
January 21, 2021
Filing Date:
June 30, 2020
Export Citation:
Assignee:
SHIZUKA CO LTD (JP)
International Classes:
E04B1/90; E04B1/94; G10K11/16
Foreign References:
| JP2015212779A | 2015-11-26 | |||
| JP2018081212A | 2018-05-24 | |||
| JPS52141010A | 1977-11-25 | |||
| JP3138579U | 2008-01-10 | |||
| JP3806733B2 | 2006-08-09 | |||
| JP3806744B1 | 2006-08-09 | |||
| JPS61185436A | 1986-08-19 | |||
| JP6065345B2 | 2017-01-25 |
Other References:
See also references of EP 3792418A4
Attorney, Agent or Firm:
KATO Takao (JP)
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