Nonwoven from bulked filament tow
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United States of America Patent
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Mar 29, 2016
Grant Date -
Sep 19, 2013
app pub date -
May 6, 2013
filing date -
Aug 2, 2007
priority date (Note) -
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Abstract
A nonwoven material has a plurality of randomly oriented and bulked crimped filaments, a plurality of point bonds interconnecting said crimped filaments into a fixed, 3-dimensional structure, and either a surface portion of said fixed, 3-dimensional structure having a greater density than an inner portion of said 3-dimensional structure or an external surface of said fixed, 3-dimensional structure being substantially free of any protruding filaments. The nonwoven material is made by: bulking a filament tow, fixing the bulked tow into a 3-dimensional structure, and calendering the 3-dimensional structure.
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