Disposable diaper with longitudinal superabsorbent concentration gradient

摘要

A hygienic disposable article used as a diaper and possessing an absorbent body enhanced with expandable material. The expandable material is to be applied along the direction of the longitudinal axis of the diaper, in decreasing quantity outwards from the crotch area in such a way that the concentration of the expandable material in the crotch area is 8% to 40% of the weight of said absorbent body, while in the area of the waist, it is 1% to 7% thereof. In this way an optimal distribution of the absorbent components of the diaper is achieved in accordance with the distribution pattern of the fluid excreted from the wearer.