Stock material or miscellaneous articles – Structurally defined web or sheet – Edge feature
Patent
1990-04-02
1995-01-24
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Edge feature
428283, 428284, 428323, 428327, 428913, 525 5424, 525 5426, 525123, 5253292, 5253294, 5253305, 604368, B32B 2302
Patent
active
053841794
ABSTRACT:
Particulate, absorbent, polymeric compositions comprising interparticle crosslinked aggregates formed from precursor particles having a relatively small particle size. (i.e., fine precursor particles). The interparticle crosslinked aggregates comprise fine precursor particles of substantially water-insoluble, absorbent, hydrogel-forming, polymer material; and an interparticle crosslinking agent reacted with the polymer material of the precursor particles to form crosslink bonds between the precursor particles. The mass average particle size of the precursor particles is generally less than about 300 microns. Interparticle crosslinked aggregates formed from fine precursor particles have particularly high rates of fluid uptake with minimal gel blocking properties. The present invention also relates to methods for producing polymeric compositions containing such interparticle crosslinked aggregates and to absorbent products such as absorbent members or absorbent articles (sanitary napkins or diapers) incorporating such polymeric compositions.
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Berg Charles J.
Lahrman Frank H.
Roe Donald C.
Bell James J.
Henderson Loretta J.
Hersko Bart S.
Miller Steven W.
The Procter & Gamble & Company
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