ACOUSTIC ATTENUATION PANEL AND ITS MANUFACTURING METHODS
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United States of America Patent
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Issued Date -
Aug 11, 2022
app pub date -
Apr 26, 2022
filing date -
Oct 31, 2019
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Abstract
An acoustic attenuation panel includes a cellular structure including a plurality of acoustic cells separated from one another by peripheral partitions, a perforated acoustic structure, the perforated acoustic structure and the cellular structure being formed in one piece in a first material, and a porous acoustic layer formed of a second material and fastened to a surface of the perforated acoustic structure by entangling the first material and the second material.
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