RECYCLABLE ACOUSTIC ABSORBENT AND MANUFACTURING METHOD THEREOF
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United States of America Patent
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Issued Date -
Sep 26, 2013
app pub date -
Jul 11, 2012
filing date -
Mar 21, 2012
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Abandoned
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Abstract
Disclosed is an acoustic absorbent including a fiber web formed of a melt-blown fiber and a polypropylene staple fiber, wherein the melt-blown fiber is prepared by melt-extruding a resin composition including a homo polypropylene and a polypropylene-based elastomer. Tensile elongation of the acoustic absorbent is improved as the content of the polypropylene-based elastomer increases. Due to excellent fitting property, the acoustic absorbent has excellent fitting property and, thus, can be efficiently fixed in a product with a complicated surface appearance. Further, by using a predetermined content of a polypropylene-based elastomer, the acoustic absorption performance of the acoustic absorbent is considerably improved.
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