HIGH LOFT NONWOVEN SHEET MATERIAL AND METHOD OF CONSTRUCTION THEREOF
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United States of America Patent
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app pub date -
Feb 9, 2011
filing date -
Jan 10, 2007
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Abstract
A nonwoven acoustic sheet material including Asian cardboard and a scrim layer and method of construction thereof is provided. The method of construction includes providing Asian cardboard and comminuting the cardboard into pieces of a predetermined size. Further, combining the reduced size pieces of cardboard with heat bondable textile fibers and staple fibers to form a substantially homogenous mixture, and then, forming a web from the mixture. Then, thermally bonding the constituent ingredients of the web to produce a matt of a desired thickness. Further, laminating a scrim layer to at least one side of the matt while maintaining the thickness of the matt as initially produced.
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