To provide a sound insulating sheet and a soundproof sheet which have sound insulating property equivalent to that of a conventional film while lightweight, and have high strength and good handleability.SOLUTION: There are a sound insulating sheet which contains a non-woven fabric containing at least one ultrafine fiber layer having an average fiber diameter of 0.3 μm or more and 7 μm or less and at least one thick-diameter layer having an average fiber diameter of 10 μm or more and 30 μm or less; a soundproof sheet which is a laminate of the sound insulating sheet, and at least one porous sheet selected from the group consisting of an open cell resin foam, a woven fabric, a non-woven fabric, a felt and a glass wool; and an automobile component which includes the sound insulating sheet or the soundproof sheet and is any form of a hood, an outer dash, an inner dash and a floor mat.SELECTED DRAWING: None
【課題】軽量であっても従来のフィルム並みの遮音性を有し、かつ、高強度で取り扱い性が良好な遮音シート及び防音シートの提供。【解決手段】平均繊維径0.3μm以上7μm以下の少なくとも1層の極細繊維層と、平均繊維径10μm以上30μm以下の少なくとも1層の太径繊維層とを含む不織布を含むことを特徴とする、遮音シート、該遮音シートと、連続気泡樹脂発泡体、織布、不織布、フェルト、及びガラスウールからなる群から選ばれる少なくとも1種類の多孔質シートとの積層体である、防音シート、並びに該遮音シート又は該防音シートを含む、フード、アウターダッシュ、インナーダッシュ又はフロアマットのいずれかの形態にある自動車部品。【選択図】なし
SOUND INSULATING SHEET AND SOUNDPROOF SHEET
遮音シート及び防音シート
2022-09-15
Patent
Electronic Resource
Japanese
IPC: | D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL / E04B Allgemeine Baukonstruktionen , GENERAL BUILDING CONSTRUCTIONS / 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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES |
SOUNDPROOF SHEET, METHOD OF MANUFACTURING SOUNDPROOF SHEET, AND DASH SILENCER FOR VEHICLE
European Patent Office | 2022
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