# US 2014/0142528 A1 · Absorbent pad with asymmetrical absorption capacity and absorbent article comprising the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0142528 A1 - Document ID: US20140142528A1 - Status: Published application - Kind: A1 - Application number: 14/232,551 - Filed: 2012-06-29 - Published: 2014-05-22 - Earliest claimed: 2011-07-18 - Assignees: SCA Hygiene Products AB - Inventors: Mandy Qin Wang; Johnwin Loh; Olle Carlbark; Peter Rönnberg - Web page: https://patentgrep.com/patent/US20140142528A1 ## CPC - A61F 13/5376: {characterised by the performance of the layer, e.g. acquisition rate, distribution time, transfer time} - A61F 13/532: inhomogeneous in the plane of the pad - A61F 13/5323: {having absorbent material located in discrete regions, e.g. pockets} - A61F 13/5638: {adjustable open type diapers (adjustable otherwise than by the fasteners A61F13/493)} - A61F 13/64: Straps, belts, ties or endless bands ({A61F13/5605, A61F13/5622}, A61F13/66 take precedence) - A61F 2013/530525: {the maximum being at front or rear} - A61F 2013/5307: {characterized by the quantity or ratio of superabsorbent material} - A61F 2013/530737: {by the absorbent capacity} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## Abstract An absorbent pad having a chassis including a liquid-permeable topsheet and a liquid-impermeable backsheet, wherein the absorbent pad is geometrically symmetrical along its longitudinal and transversal centre lines. The absorbent pad is provided with attaching arrangements by which the pad can be releasably attached to a separate belt adapted to be placed around the waist of the user. The absorbent pad further includes an absorbent core interposed between the topsheet and backsheet, so that the absorbent core is divided into a first longitudinal half and a second longitudinal half along its longitudinal length. The absorbent core has a thickness which is substantially the same on the same distance from the transversal centre line (measured perpendicular to the transversal centre line) before the core is wetted. The first longitudinal half has a higher absorption capacity than the second longitudinal half. ## Claims ### Claim 1 An absorbent pad having a chassis comprising a liquid-permeable topsheet and a liquid-impermeable backsheet, wherein the absorbent pad is geometrically symmetrical along its longitudinal and transversal centre lines and wherein the absorbent pad is provided with attaching arrangements by which the pad can be releasably attached to a separate belt adapted to be placed around the waist of the user, characterized in that the absorbent pad further comprises an absorbent core interposed between the topsheet and the backsheet, which absorbent core is also geometrically symmetrical along the longitudinal and transversal centre lines of the pad and the absorbent core is divided into a first longitudinal half and a second longitudinal half along its longitudinal length, and wherein the absorbent core has a thickness which is substantially the same on the same distance from the transversal centre line measured perpendicular to the transversal centre line, before the core is wetted, and wherein the first longitudinal half has a higher absorption capacity than the second longitudinal half. ### Claim 2 (depends on 1) The absorbent pad according to claim 1, wherein the absorption capacity ratio of the first longitudinal half to the second longitudinal half of the core is 80:20. ### Claim 3 (depends on 1) The absorbent pad according to claim 1, wherein the absorption capacity ratio of the first longitudinal half to the second longitudinal half of the core is 60:40. ### Claim 4 (depends on 1) The absorbent pad according to claim 1, wherein the absorption capacity ratio of the first longitudinal half to the second longitudinal half of the core is 55:45. ### Claim 5 (depends on 1, 2, 3, 4) The absorbent pad according to any one of claims 1-4, wherein the absorbent core comprises a superabsorbing polymeric material. ### Claim 6 (depends on 5) The absorbent pad according to claim 5, wherein the first longitudinal half contains a different amount of superabsorbing polymeric material than the second longitudinal half, which causes the two longitudinal halves to exhibit different absorption capacity. ### Claim 7 (depends on 1, 2, 3, 4, 5, 6) The absorbent pad according to any one of claims 1-6, wherein the difference of the dimensions of the absorbent core measured on equal perpendicular distances from the transversal centre line is 5% at maximum. ### Claim 8 (depends on 1, 2, 3, 4, 5, 6, 7) The absorbent pad according to any one of claims 1-7, wherein attaching arrangements are provided on the side of the pad intended to face the wearer when used and intended to be releasably attached to a belt on the side of the belt oriented away from the wearer. ### Claim 9 (depends on 1, 2, 3, 4, 5, 6, 7, 8) The absorbent pad according to any one of claims 1-8, wherein the attaching arrangements comprises (i) hook elements provided on each corner of the longitudinal ends of the pad intended to be attached to loop elements provided on a belt, or (ii) loop elements provided on each corner of the longitudinal ends of the pad intended to be attached to hook elements provided on a belt. ### Claim 10 (depends on 1, 2, 3, 4, 5, 6, 7, 8) The absorbent pad according to any one of claims 1-8, wherein the attaching arrangements comprise adhesive elements provided on each corner of the longitudinal ends of the pad intended to be attached to landing zones provided on a belt. ### Claim 11 (depends on 1, 2, 3, 4, 5, 6, 7, 8) The absorbent pad according to any one of claims 1-8, wherein the attaching arrangements are provided on tabs extending outwardly from each of the waist portions of the pad. ### Claim 12 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11) The absorbent pad according to any one of claims 1-11, wherein the longitudinal half of the pad with higher absorption capacity is provided with indicating means. ### Claim 13 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11) The absorbent pad according to any one of claims 1-11, wherein the longitudinal half of the pad with lower absorption capacity is provided with indicating means. ### Claim 14 (depends on 12, 13) The absorbent pad according to claim 12 or 13, wherein the indicating means comprises visually indicating means or tactile indicating means. ### Claim 15 An absorbent article comprising an absorbent pad and a separate belt to which the pad is releasably attached, characterized in that the absorbent pad is an absorbent pad according to any one of preceding claims.