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Patent Searching and Data


Title:
SOUNDPROOFING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2019/059046
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a soundproofing structure with which it is possible to obtain high soundproofing performance and to suitably maintain formation properties. Provided is a soundproofing structure comprising a micro-perforated sheet having a plurality of through-holes that pass through in the thickness direction, wherein: in a main surface of the micro-perforated sheet, the average opening diameter of the through-holes is at least 0.1 μm and less than 100 μm; at least some of the plurality of through-holes are through-holes A shaped so as to have the greatest pore diameter in the interior thereof; and in the through-holes A, 1 <φ2/φ1 ≤ 5, where φ1 is the smallest pore diameter and φ2 is the greatest pore diameter.

Inventors:
HAKUTA Shinya (577 Ushijima, Kaisei-machi, Ashigara-kami-gu, Kanagawa 77, 〒2588577, JP)
YAMAZOE Shogo (577 Ushijima, Kaisei-machi, Ashigara-kami-gu, Kanagawa 77, 〒2588577, JP)
OHTSU Akihiko (577 Ushijima, Kaisei-machi, Ashigara-kami-gu, Kanagawa 77, 〒2588577, JP)
Application Number:
JP2018/033623
Publication Date:
March 28, 2019
Filing Date:
September 11, 2018
Export Citation:
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Assignee:
FUJIFILM CORPORATION (26-30, Nishiazabu 2-chome Minato-k, Tokyo 20, 〒1068620, JP)
International Classes:
G10K11/16; B32B3/24; B32B15/01; E01F8/00; E04B1/86
Foreign References:
JP2008231369A2008-10-02
JP2008139816A2008-06-19
JPH0830277A1996-02-02
JPS6314300U1988-01-29
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (XYMAX Iwamoto-cho Building 6F, 3-3 Iwamoto-cho 2-chome, Chiyoda-k, Tokyo 32, 〒1010032, JP)
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