A disposable undergarment including an absorbent core assembly and methods of making the same is disclosed. The undergarment includes a chassis holding the core assembly. The chassis includes a front section, a crotch section and a rear section. The core assembly is located in the crotch section, with portions of it extending into the front and rear sections. A large plurality of closely spaced elastic threads extends across the full width of the undergarment in the front and rear sections. The elastic threads are broken in the areas of the core assembly. The core assembly includes a first section of a slow acting but high absorbency SAP in pockets thereof and an underlying second section of a fast acting but lower absorbency SAP in pockets thereof.

A disposable absorbent article may include a topsheet, a backsheet, an absorbent core disposed between the topsheet and the backsheet, and a leg gasketing system. The leg gasketing system may include an inner cuff and an outer cuff. The inner cuff may include an inner cuff folded edge and an inner cuff material edge and the outer cuff may include an outer cuff folded edge and an outer cuff material edge such that the web of material is folded laterally inward to form the outer cuff folded edge and folded laterally outward to form the inner cuff folded edge.

A manufacturing device is provided, within a range in the rotation direction of the upper half of an anvil roll, in the order from the upstream side in the rotation direction of the anvil roll, with a first sheet feeding unit, a recess forming unit, a particulate material feeding device, and a second sheet feeding unit and further a welding unit provided on the downstream side of the second sheet feeding unit in the rotation direction. The anvil roll has a large number of concaves, projections provided in a portion among the concaves, so as to surround each of the concaves, and a unit to suck air in the concaves. For each concave, the projections are minute dot-shaped projections arranged only in one row at intervals in the direction surrounding the concave.

The present invention is an absorbent structure comprising a fibrous matrix (110), meltfusionable material and superabsorbent polymer particles (140). The absorbent structure is bonded by a meltfusion bond point (200) pattern, which is preferably created by ultrasonic welding.

An apparatus for manufacturing an absorbent element for sanitary products and a method for manufacturing the same are disclosed. The absorbent element is of the type incorporating plurality of sacs or pockets in which expandable super-absorbent material is placed.

A disposable absorbent article may include a topsheet, a backsheet, an absorbent core disposed between the topsheet and the backsheet, and a leg gasketing system. The leg gasketing system may include an inner cuff and an outer cuff. The inner cuff may include an inner cuff folded edge and an inner cuff material edge and the outer cuff may include an outer cuff folded edge and an outer cuff material edge such that the web of material is folded laterally inward to form the outer cuff folded edge and folded laterally outward to form the inner cuff folded edge.

An absorbent article comprising an absorbent core having at least two longitudinally extending channel-forming areas and a wetness indicator. The core wrap comprises a top side and a bottom side, which are attached to each other through areas substantially free of absorbent material, so that when the absorbent material swells upon absorption of a liquid the core wrap forms channels along these areas substantially free of absorbent material.

A disposable absorbent article may include a topsheet, a backsheet, an absorbent core disposed between the topsheet and the backsheet, and a leg gasketing system. The leg gasketing system may include an inner cuff and an outer cuff. The inner cuff may include an inner cuff folded edge and an inner cuff material edge and the outer cuff may include an outer cuff folded edge and an outer cuff material edge such that the web of material is folded laterally inward to form the outer cuff folded edge and folded laterally outward to form the inner cuff folded edge.

A polymer provided region (13) at which a superabsorbent polymer (12) is provided, and a polymer non-provided region (14) at which the superabsorbent polymer (12) is not provided are formed, a liquid diffusion sheet (15), that promotes diffusion of body fluid in a plane direction, is staked to be adjacent to a skin side surface of a lower layer sheet (11), and an upper layer sheet (10) is bonded with the liquid diffusion sheet (15) under a state that the upper layer sheet (10) contacts the liquid diffusion sheet (15), at the polymer non-provided region (14) to form a polymer sheet (4).

A disposable undergarment including an absorbent core assembly and methods of making the same is disclosed. The undergarment includes a chassis holding the core assembly. The chassis includes a front section, a crotch section and a rear section. The core assembly is located in the crotch section, with portions of it extending into the front and rear sections. A large plurality of closely spaced elastic threads extends across the full width of the undergarment in the front and rear sections. The elastic threads are broken in the areas of the core assembly. The core assembly includes a first section of a slow acting but high absorbency SAP in pockets thereof and an underlying second section of a fast acting but lower absorbency SAP in pockets thereof.