MOTOR VEHICLE ACOUSTIC INSULATOR, METHODS OF MANUFACTURE AND USE THEREOF

An acoustic insulator for a motor vehicle is provided comprising a mass providing an acoustic barrier and a spring providing an acoustic absorber overlying the mass. The mass comprises a first acoustic mass layer underlying a second acoustic mass layer. The first acoustic mass layer is provided by a...

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Bibliographische Detailangaben
Hauptverfasser:	MCROBERTS TERRENCE M, RYNTZ ROSE A, LAHL JOHN, STARLING MATT
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:	An acoustic insulator for a motor vehicle is provided comprising a mass providing an acoustic barrier and a spring providing an acoustic absorber overlying the mass. The mass comprises a first acoustic mass layer underlying a second acoustic mass layer. The first acoustic mass layer is provided by a thermoplastic sheet having a thickness in a range of 0.5 mm to 1 mm. The second acoustic mass layer is provided at one or more localized areas formed in place on a backside surface of the first acoustic mass layer to increase an overall thickness of the mass at the one or more localized areas. The spring layer is formed in place on a backside of the second acoustic mass layer and the backside of the first acoustic mass layer.