Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1993-11-08
1995-06-06
Withers, James D.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
428219, 428283, 428286, 428288, 428290, 428302, 604368, 604375, 604378, A61F 1315, A61F 1320, B32B 2700
Patent
active
054221692
ABSTRACT:
Absorbent structures are disclosed which contain specific, relatively, narrow, particle size distributions of superabsorbent hydrogel-forming materials in relatively high concentrations. The absorbent structures of the present invention are useful in disposable absorbent articles such as diapers, adult incontinence pads, and the like. The absorbent articles of the present invention comprise a liquid pervious topsheet, a liquid impervious backsheet joined to the topsheet, and an absorbent core positioned between the topsheet and backsheet. At least a portion of the absorbent core comprises between about 25% and about 90% by weight particles of substantially water-insoluble, absorbent hydrogel-forming, polymer material formed by solution polymerization methods. The particles of the hydrogel-forming, polymer material are of such size that at least about 80% of the particles, by weight, will pass through a U.S. Standard 50 mesh sieve with 297 micron openings and be retained on a U.S. Standard 140 mesh sieve with 105 micron openings when the particles are tested according to the Sieving Test described herein.
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Bamber Jeffrey V.
Henderson Loretta J.
Hersko Bart S.
The Procter & Gamble & Company
Withers James D.
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