Method for making cellulosic fibrous structures having at least

Details Method for making cellulosic fibrous structures having at least Method for making cellulosic fibrous structures having at least

1993-07-28

1995-08-22

Jones, W. Gary

Paper making and fiber liberation

Processes and products

Non-uniform, irregular or configured web or sheet

162109, 162116, 162361, 162362, D21H 2702, D21F 1100

Patent

active

054436915

ABSTRACT:
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.

REFERENCES:
patent: 3025585 (1962-03-01), Griswold
patent: 4529480 (1985-07-01), Trokhan
patent: 5126015 (1992-06-01), Pounder

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