发明授权
US07504348B1 Production of nonwoven fibrous webs including fibers with varying degrees of shrinkage 有权
生产包括具有不同收缩程度的纤维的非织造纤维网

Production of nonwoven fibrous webs including fibers with varying degrees of shrinkage
摘要:
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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