Patent ID: 7344522

Claim:
An absorbent whose central area is easily rendered three-dimensional by bulging by water absorption characterized in that, where the absorbent is comprised of an absorbent sheet, wherein said absorbent sheet comprises a substrate sheet and super-absorbent materials coated on said substrate sheet whereby a plurality of band-shaped areas with super-absorbent materials and a plurality of continuous band-shaped areas without super-absorbent materials are formed on said substrate sheet, with these band-shaped areas extending alternately in parallel lines, lengthwise on said substrate sheet, at least one band-shaped portion of multilayer construction is formed by said absorbent sheet being folded in said area without super-absorbent materials located in the widthwise center along a folding line in said area without super-absorbent materials of said absorbent sheet, then being folded again this time in the opposite direction in said area without super-absorbent materials which is located at a desired distance from the above folded position, forming a valley fold so that each folded portion faces the other, wherein said areas with super-absorbent materials are superposed in at least three layers in some parts.