Acoustically tunable sound absorption articles and methods of making same
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United States of America Patent
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Mar 26, 2013
Grant Date -
May 19, 2011
app pub date -
Dec 10, 2010
filing date -
Jun 12, 2009
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Abstract
A moldable acoustic facing comprises cellulosic fibers and synthetic fibers entangled together. The acoustic facing has a basis weight of from about 1.5 to about 5.0 ounces per square yard (osy), a thickness of less than about 0.050″, a mean pore size of between about 8 microns and about 40 microns, and an elongation at break of at least twenty percent. The acoustic facing includes less than about five percent synthetic microfiber and has an acoustic resistance of at least about 250 Rayls.
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