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    Porous sound-absorbing board

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    A perforated sound-absorbing plate includes a perforated plate as a base material in which a large number of through holes are formed. A coating film is provided on an inner wall surface of the through hole, and a through-hole portion whose volume is smaller than a volume of the through hole is formed by the coating film.

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    Porous sound-absorbing board

    New search for: YAMAGUCHI ZENZO
    New search for: YAMAGIWA ICHIRO

    A perforated sound-absorbing plate includes a perforated plate as a base material in which a large number of through holes are formed. A coating film is provided on an inner wall surface of the through hole, and a through-hole portion whose volume is smaller than a volume of the through hole is formed by the coating film.

    Access

    Download

    Porous sound-absorbing board

    New search for: YAMAGUCHI ZENZO
    New search for: YAMAGIWA ICHIRO

    A perforated sound-absorbing plate includes a perforated plate as a base material in which a large number of through holes are formed. A coating film is provided on an inner wall surface of the through hole, and a through-hole portion whose volume is smaller than a volume of the through hole is formed by the coating film.

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    Document information
    Title:

    Porous sound-absorbing board

    Contributors:

    YAMAGUCHI ZENZO (author) / YAMAGIWA ICHIRO (author)

    Publication date:

    2021-06-01

    Type of media:

    Patent

    Type of material:

    Electronic Resource

    Language:

    English

    Classification:

    IPC:  E04B Allgemeine Baukonstruktionen , GENERAL BUILDING CONSTRUCTIONS / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES

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