US Patent 7850672 Absorbent article comprising an absorbent structure

An absorbent article such as a diaper, an incontinence guard, a sanitary napkin or the like, includes a liquid permeable upper surface and an absorbent structure, which in the longitudinal direction exhibits a crotch portion and two end portions, wherein the absorbent structure has an acquisition layer and at least one first storage layer. The first storage layer has at least 50 percent by weight of a super absorbent material calculated on the total weight of the first storage layer. The material of the first storage layer in a dry condition has a density exceeding 0.4 g/cm3. Further, the first storage layer at least in the crotch portion of the absorbent structure has apertures or recesses.