PROBLEM TO BE SOLVED: To obtain a soundproof material which improves sound insulation performance only in a necessary portion with a simple structure to attain high soundproof performance as a whole while attaining sound absorption performance with a sound absorption material.SOLUTION: In a sheet-like soundproof material 10 formed by a sound absorption material including air, a sound insulation improvement part 15 which compressively deforms in a thickness direction to attain surface density higher than that of other portions of the soundproof material 10 is provided.SELECTED DRAWING: Figure 4
【課題】吸音材による吸音性能を得ながら、簡単な構造で必要な部分のみ遮音性能を高めて全体として高い防音性能を得る。【解決手段】空気を含む吸音材からなるシート状の防音材10には、厚み方向に圧縮変形して該防音材10の他の部分よりも面密度が高められた遮音性向上部15が設けられている。【選択図】図4
SOUNDPROOF MATERIAL
防音材
2018-08-23
Patent
Electronic Resource
Japanese
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