Cellulosic fibrous structures having at least three regions dist

Paper making and fiber liberation – Processes and products – Non-uniform – irregular or configured web or sheet

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162111, 162113, 162116, 428153, D21H 1502

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active

052777618

ABSTRACT:
A cellulosic fibrous structure, such as paper. The fibrous structure has at least three intensively distinct regions. The regions are distinguished from one another by intensive properties such is basis weight, density and projected average pore size, or thickness. In one embodiment, the fibrous structure has regions of two basis weights, a high basis weight region and a low basis weight region. The high basis weight region is further subdivided into low and high density regions so that a fibrous structure having three regions is produced.
A second embodiment is a four region fibrous structure. Two of the regions have generally equivalent relatively high basis weights and two of the regions having generally equivalent relatively low basis weights. The high basis weight regions and low basis weight regions are further subdivided according to relatively high and relatively low densities, so that when the high and low basis weight regions are permuted with the high and low density regions, four different regions result. The regions distinguished by density will have inversely proportionate projected average pore sizes.

REFERENCES:
patent: 1699760 (1929-01-01), Sherman
patent: 2771363 (1956-11-01), Fish
patent: 2862251 (1958-12-01), Kalwaites
patent: 2902395 (1959-09-01), Hirschy et al.
patent: 3034180 (1962-05-01), Greiner et al.
patent: 3072511 (1963-01-01), Harwood
patent: 3081500 (1963-03-01), Griswold et al.
patent: 3081512 (1963-03-01), Griswold
patent: 3081514 (1963-05-01), Griswold
patent: 3081515 (1963-05-01), Griswold et al.
patent: 3491802 (1970-01-01), Mortensen et al.
patent: 3681182 (1972-08-01), Kalwaites
patent: 3681183 (1972-08-01), Kalwaites
patent: 3881987 (1975-05-01), Benz
patent: 4191609 (1980-03-01), Trokhan
patent: 4529480 (1985-07-01), Trokhan
patent: 4840829 (1989-06-01), Suzuki et al.
patent: 4921034 (1990-05-01), Burgess et al.
patent: 5126015 (1992-06-01), Pounder
Veratec Sales Presentation by Zoltan Mate, May 8, 1991-Wet Laid Hydroentangled Formation.

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