Hollow fiber nonwoven sheet for fabric softener substrate
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United States of America Patent
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Issued Date -
May 13, 2004
app pub date -
Nov 7, 2002
filing date -
Nov 7, 2002
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Abandoned
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Abstract
The present invention provides a nonwoven fabric that is especially engineered to function as the substrate for a dryer activated fabric softener sheet. The substrate has a basis weight of 0.48 ounces per square yard or less, a thickness of from about 0.16 mm to about 0.38 mm, and comprises a nonwoven web of fibers, wherein at least some of the fibers are hollow. Preferably the fibers have a denier of from 2 to 8. In preferred embodiments of the invention, the hollow fibers have a void area at least 10 percent of the fiber cross-section, and the fibers have a noncircular trilobal cross-section.
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