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US5674591A Nonwoven fabrics having raised portions 失效
具有凸起部分的无纺布

Nonwoven fabrics having raised portions
摘要:
Nonwoven fabrics having a fibrous background portion in one plane thereof and raised fibrous portions in another plane thereof. There may be two types of raised portions. In one type, the basis weight of the raised portion is substantially the same as the basis weight of the background portion. In another type of raised portion, the basis weight is greater than the basis weight of the background portion. The raised portions are joined to the background portion by a fibrous transition region.
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