Planar element for the absorption of air-transmitted sound and method of manufacturing the same
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United States of America Patent
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Sep 4, 1984
Grant Date -
N/A
app pub date -
May 20, 1983
filing date -
May 22, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A planar element for the absorption of air-transmitted sound, includes a flexible layer of open-cell foam material including a surface having protuberances with peaks formed thereon, and a flat closed cover layer formed of synthetic foil material fastened to the peaks of the protuberances, and a method of manufacturing the same.
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