Absorbent structures containing stiffened fibers and superabsorbent material
AssigneeThe Procter & Gamble Company
InventorsJeffery T. Cook, Glen R. Lash, Danny R. Moore, Gerald A. Young
Life of this patent
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Abstract
Absorbent structures having a fluid acquisition/distribution layer with an average dry density of less than about 0.30 g/cc, an average density upon wetting with 1.0% NaCl aqueous solution of less than about 0.20 g/cc, and an average dry basis weight from about 0.001 to about 0.10 g/cm.sup.2 ; and a fluid storage layer positioned beneath the acquisition/distribution layer comprising at least about 15% superabsorbent material. The fluid acquisition/distribution layer comprises from about 50% to 100% chemically stiffened cellulosic fibers and from 0% to about 50% binding means.
Claims32
An absorbent article for acquisition, distribution, and storage of bodily fluids, said article comprising:
- (a) a fluid pervious topsheet;
- (b) a fluid impervious backsheet affixed to said topsheet;
- and
- (c) an absorbent core disposed between said topsheet and said backsheet, said absorbent core having:
- (i) a fluid acquisition/distribution layer having an average dry density of less than about 0.30 g/cc, an average density upon saturation with 1% NaCl aqueous solution, dry weight basis, of less than about 0.20 g/cc, and an average dry basis weight of from about 0.001 to about 0.10 g/cm.sup.2, said acquisition/distribution layer comprising from about 50% to 100%, dry weight basis, of hydrophilic chemically stiffened cellulosic fibers and from 0% to about 50%, dry weight basis, of a binding means
- for said fibers;
- and
- (ii) a fluid storage layer, positioned beneath said acquisition/distribution layer relative to said topsheet, comprising at least about 15%, by weight of said storage layer, of superabsorbent material and from 0% to about 85% of a carrier means for said superabsorbent material;
- said acquisition/distribution layer having no more than about 6.0% of superabsorbent material and having a top surface area which is from about 15% to about 95% of, and smaller than, the top surface area of said fluid storage layer, said fluid acquisition/distribution layer further being maintained in unimpeded fluid communication with said top surface area of said fluid storage layer.
An absorbent structure for acquisition, distribution, and storage of bodily fluids, said structure comprising:
- (i) fluid acquisition/distribution layer having an average dry density of less than about 0.30 g/cc, an average density upon saturation with 1% NaCl aqueous solution, dry weight basis, of less than about 0.20 g/cc, and an average dry basis weight of from about 0.001 to about 0.10 g/cm2, said acquisition/distribution layer comprising from about 50% to 100%, dry weight basis, of hydrophilic chemically stiffened cellulosic fibers and from 0% to about 50%, dry weight basis, of a binding means for said fibers;
- and
- (ii) a fluid storage layer, positioned beneath said acquisition/distribution layer, comprising at least about 15%, by weight of said storage layer, of superabsorbent material and from 0% to about 85% of a carrier means for said superabsorbent material;
- said fluid acquisition/distribution layer having no more than about 6.0% of superabsorbent material and having a top surface area which is from about 15% to about 95% of, and smaller than, the top surface area of said fluid storage layer, said fluid acquisition/distribution layer further being maintained in unimpeded fluid communication with said top surface area of said fluid storage layer.
Dependencies are inferred from the claim text.