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US 12,270,165 B2Granted
Sound absorber
AssigneeSealed Air Verpackungen GmbH
InventorRalf Dirnberger
Life of this patent
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Abstract
The invention relates to a sound absorber (1) for a traffic route noise protection wall, wherein the sound absorber (1) comprises at least one plastic foam board (2). According to the invention, a first surface (3) of the plastic foam board (2) has a predeterminable number of sound absorber recesses (4) for predetermination of the absorption behavior with a predeterminable frequency response, wherein each of the sound absorber recesses (4) extends only through part of the thickness (5) of the plastic foam board (2).
Claims20
A sound absorber for a traffic route noise protection wall, the sound absorber comprising:
- at least one plastic foam board having a given thickness and a first surface forming a surface of the sound absorber and defining sound absorber recesses in the form of a plurality of grooves extending across the first surface to provide a desired frequency response sound absorption capacity behavior for the foam board, wherein the sound absorber recesses extend only partially into the thickness of the plastic foam board.
Dependencies are inferred from the claim text.