Disposable thermal shield
AssigneeMatec Holding AG
InventorPeter Hielscher
Life of this patent
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Abstract
The present thermal shield comprises, in essence, a dimensionally stable substrate (2) on which is disposed a sound-absorbing thermal insulating layer (3). This thermal insulating layer is provided with a protective coating (4). According to the disclosure, all layers of the thermal shield consist of a light metal, particularly of aluminum or an aluminum alloy. For acoustic reasons, the thermal insulating layer is made up of an open-pore structure, especially of aluminum wool. In a further development, the thermal insulating layer is made up of several plies, and the dimensionally stable substrate (2) is perforated. A thin protective layer (5) acting as a foil absorber is arranged between the substrate (2) and the thermal insulating layer (3). This thermal shield is utilized with preference in the automobile industry.
Claims15
A disposable, sound-absorbing vehicle thermal shield for the acoustic and thermal insulating of vehicle parts, said shield consisting essentially of a relatively thick, partially perforated, dimensionally stable substrate in the form of a sheet of metal, a multi-ply, sound-absorbing thermal insulating layer built up of several plies of a light metal material having an open pored structure with a porous metal foil being provided between plies thereof as an interlayer of said insulating layer, said thermal insulating layer being carried by said substrate, a protective cover in the form of a relatively thin layer of a light metal provided at least on a side of said thermal insulating layer facing away from the substrate, and means for holding together said dimensionally stable substrate, said sound-absorbing thermal insulating layer and said protective cover, and wherein said dimensionally stable substrate, said multi-ply, sound-absorbing thermal insulating layer, and said protective cover layer are each manufactured from the same material, namely a readily disposable light metal having a melting point above 600.degree. C. whereby the thermal shield is readily disposable for recycling the material thereof without separation from one another and sorting of said dimensionally stable substrate, said multi-ply, sound-absorbing thermal insulating layer and said protective cover layer.
Dependencies are inferred from the claim text.