SOUND INSULATING SHEET AND SOUNDPROOF SHEET

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 leas...

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Bibliographische Detailangaben
Hauptverfasser:	OKAMURA CHIE, TAKAHASHI KATSUYA, SHIODA EIJI, KOMATSU TAKASHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR BRAIDING BUILDING CEILINGS COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS INSULATION OR OTHER PROTECTION OF BUILDINGS KNITTING LACE-MAKING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS NON-WOVEN FABRICS PERFORMING OPERATIONS PHYSICS ROOFS SOUND-PRODUCING DEVICES TEXTILES TRANSPORTING TRIMMINGS VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR WADDING WALLS, e.g. PARTITIONS
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Beschreibung
Zusammenfassung:	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