Noise attenuation panel
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United States of America Patent
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-
Aug 6, 1996
Grant Date -
N/A
app pub date -
May 21, 1990
filing date -
Jul 25, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A noise attenuation panel having a backing sheet, a facing sheet and a cellular core having a multiplicity of open-ended juxtaposed cells. The backing sheet extends across the ends of the cells at the rear of the core and the facing sheet extends across the ends of the cells at the front of the core. The facing sheet is made of a porous permeable thermoplastics material. The porous permeable thermoplastics material for the facing sheet is produced by powder sintering a thermoplastics material.
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