To provide manufacturing means for a soundproof material which exhibits high soundproof performance in a frequency range of 2000 Hz or lower.SOLUTION: Provided is means for manufacturing a soundproof material 10 that includes an elastic sheet 110, and a support part for supporting the sheet and constituted from a lattice-shaped structure 100 in which a plurality of hollow cells 100a that divide the sheet into sections are systematically arrayed, the surface rigidity (k) of the sheet and surface density (m) of the sheet in the sections satisfying the relationship of formula 1. The means includes: producing a planar hollow structure formed by linearly arraying a plurality of hollow cells; cutting the hollow structure at a plane perpendicular to the extension direction of the hollow structure and producing a plurality of lattice-shaped structure units; arranging the plurality of lattice-shaped structure units such that the hollow cells are arrayed in planar form and aperture cross-sections of at least one lattice-shaped structure are aligned; and joining the lattice-shaped structures and the sheet together such that the aligned aperture cross-sections face the sheet side.SELECTED DRAWING: Figure 2
【課題】2000Hz以下の周波数域において高い防音性能を発揮する防音材の製造手段を提供する。【解決手段】弾性を有するシート110を区画部に区画する複数の中空セル100aが規則的に配列される格子状構造体100シートを支持する支持部を備え、区画部におけるシートの面剛性(k)及びシートの面密度(m)が下記数式1の関係を満足する防音材10を製造する手段であって、複数の中空セルが直線状に配列されてなる平板状の中空構造体を作製し、中空構造体の延在方向に垂直な面で中空構造体を切断して複数の格子状構造体ユニットを作製し、複数の格子状構造体ユニットを、中空セルが面状に配列するように、かつ、格子状構造体の少なくとも一方の開口断面が揃うように配置して格子状構造体を作製し、揃った開口断面がシート側に向き合うように、格子状構造体とシートとを接合する。【選択図】図2
SOUNDPROOF MATERIAL MANUFACTURING METHOD AND SOUNDPROOF STRUCTURE MANUFACTURING METHOD
防音材の製造方法および防音構造体の製造方法
2021-06-24
Patent
Electronic Resource
Japanese
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