Patent ID: 6794557
Filing Date: 2004-09-21
Classification: A61F,Y10T

Abstract:
A disposable absorbent article comprising:a topsheet; a backsheet; and an absorbent core disposed therebetween; wherein said absorbent core is constructed of a first absorbent composite including an absorbent layer of hydratable fine fibers in the form of microfibril obtained from cellulose or a derivative thereof, and super absorbent polymer (SAP) particles bonded together by said hydratable fibers, a coating of mineral oil over said SAP particles of said absorbent layer, said coating being adapted to retard the initial receipt of liquid by said SAP in said absorbent layer, and a nonwoven substrate supporting said absorbent layer, said absorbent layer being coated thereupon; and a pair of longitudinally-extending, upstanding cuffs spaced laterally from said core, each said cuff including a folded portion of said topsheet and a longitudinally-extending absorbent composite section secured within said folded portion, said longitudinally-extending absorbent composite section including an absorbent layer of hydratable fine fibers in the form of microfibril obtained from cellulose or a derivative thereof, an super absorbent polymer (SAP) particles bonded together by said hydratable fibers, and a nonwoven substrate supporting said absorbent layer, said absorbent layer being coated thereupon; and wherein said first absorbent composite of said core and said longitudinally extending absorbent composite sections of said cuffs are distinct swellable SAP sections of one continuous absorbent composite structure positioned about a crotch region of said article, said continuous absorbent composite structure being folded between each said longitudinally extending absorbent composite section and said absorbent core to form a substantially non-swellable intersection therebetween; and wherein said absorbent layer includes a low cross link SAP adapted to gel block upon wetting such that said backsheet is substantially impervious when wet and said backsheet is breathable when dry; and wherein said SAP are water-swellable particles included in a concentration in the range of about 50 g/m2 to about 500 g/m2.