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Cellulosic fibrous structures having at least three regions distinguished by intensive properties
Cellulosic fibrous structures having at least three regions distinguished by intensive properties
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机译:纤维素纤维结构,具有至少三个以强化特性区分的区域
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摘要
A process for making a cellulosic fibrous structure such as paper. In one embodiment, the fibrous structure has high and low basis weight regions. The high basis weight region is subdivided into low density regions, so that a fibrous structure having three regions is produced. In a second embodiment, the fibrous structure has four regions. Both the high and low basis weight regions are further subdivided into high and low density regions. The process comprises applying noncoincident differential pressure to selected regions of an embryonic fibrous structure.
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