Production of nonwoven fibrous webs including fibers with varying degrees of shrinkage
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United States of America Patent
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Mar 17, 2009
Grant Date -
N/A
app pub date -
Aug 8, 2002
filing date -
Aug 17, 2001
priority date (Note) -
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Abstract
Nonwoven fibrous webs are formed including a first group and a second group of fibers, where fibers of the first group are imparted with a degree of shrinkage that differs from a degree of shrinkage imparted to fibers in the second group. During or after bonding of the web, the web may be subjected to heat treatment causing fibers in one of the groups to shrink a greater amount in comparison to fibers in the other group, resulting in nonwoven products with desired textures and other physical characteristics.
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