To provide a fiber laminate structure having excellent sound absorption properties particularly in both of low frequency region and high frequency region even with a thin thickness.SOLUTION: A fiber laminate structure includes a nonwoven fabric having a basis weight of 800 g/m2 or less and a sheet with an open hole having a basis weight of 70 g/m2 or more alternately laminated. At least two layers of the sheets with an open hole are included in the structure.SELECTED DRAWING: None
【課題】本発明の目的は、薄い繊維積層構造体にあっても、その吸音特性に優れ、特に低周波領域と高周波領域の吸音特性を併せ持つ繊維積層構造体を提供することにある。【解決手段】目付が800g/m2以下の不織布と、目付が70g/m2以上の貫通孔を有するシートとを交互に積層され、少なくとも前記貫通孔を有するシートが二層以上含む繊維積層構造体によって上記課題を解決することができる。【選択図】なし
FIBER LAMINATE STRUCTURE
繊維積層構造体
2021-11-01
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES |
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