SOUNDPROOFING MATERIAL

PROBLEM TO BE SOLVED: To provide a soundproofing material that can absorb noises propagated into a cabin particularly with lightweight structure regarding a soundproofing material for preventing noise on the anti-cabin-inside such as an engine room from being propagated into the cabin. SOLUTION: Thi...

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Bibliographische Detailangaben
Hauptverfasser:	NAGASE HIROYUKI, TAJIMA NAOJI, KUZUMAKI SEIGO, TSURUOKA KAZUO, FUSHIKI SHINOBU, OGAWA KATSUMI, ISHIKAWA YOHEI, YAMAUCHI AKIHIRO, KATO DAISUKE, MORI HIDEYUKI, MATSUYAMA SOHEI
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PERFORMING OPERATIONS PHYSICS SOUND-PRODUCING DEVICES TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a soundproofing material that can absorb noises propagated into a cabin particularly with lightweight structure regarding a soundproofing material for preventing noise on the anti-cabin-inside such as an engine room from being propagated into the cabin. SOLUTION: This soundproofing material 10 for a vehicle is formed by laminating a first permeable sound absorbing layer 20, an impermeable sound insulating layer 30 and a second permeable sound absorbing layer 40 in this order from the cabin inside 100 and characterized by not having an impermeable layer on the cabin inside of the first permeable sound absorbing layer 20 nor having an impermeable layer on the anti-cabin-inside of the second permeable sound absorbing layer 40.