Acoustics – Sound-modifying means – Sound absorbing panels
Reexamination Certificate
2010-01-26
2011-12-27
San Martin, Edgardo (Department: 2832)
Acoustics
Sound-modifying means
Sound absorbing panels
C181S292000, C181S296000
Reexamination Certificate
active
08083027
ABSTRACT:
A method for manufacturing a sandwich panel includes, but is not limited to the steps of providing at least one air-permeable core layer and at least one porous cover layer, applying an adhesive onto a first area of the core layer, pressing the cover layer onto the first area of the core layer to connect the cover layer to the core layer, and applying an airstream that from the outside is directed onto the cover layer and that moves through the cover layer and the core layer. By means of such an airstream it is possible to prevent excessive accumulation of adhesive on the cover layer, which otherwise would result in partial blocking of the cover layer. By varying the intensity of the airstream the flow resistance of the arrangement including, but not limited to, the cover layer and the core layer may be determined and set during the bonding process. In this way a sandwich panel with precise sound-absorption behavior can be manufactured.
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Airbus Operations GmbH
Ingrassia Fisher & Lorenz P.C.
Martin Edgardo San
LandOfFree
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