# US 2024/0189162 A1 · Disposable diaper and method for manufacturing same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0189162 A1 - Document ID: US20240189162A1 - Status: Published application - Kind: A1 - Application number: 18/551,152 - Filed: 2022-03-04 - Published: 2024-06-13 - Earliest claimed: 2021-05-20 - Assignees: Daio Paper Corporation - Applicants: Daio Paper Corporation - Inventors: Akie MORITANI - Web page: https://patentgrep.com/patent/US20240189162A1 ## CPC - A61F 13/15707: {Mechanical treatment, e.g. notching, twisting, compressing, shaping} - A61F 13/533: having discontinuous areas of compression - A61F 13/15804: {Plant, e.g. involving several steps} - A61F 13/49017: {the elastic means being located at the crotch region} - A61F 2013/5315: {with a tissue-wrapped core} - A61F 2013/53445: {from several sheets} - 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 A disposable diaper whose absorber body changes its shape to motion of the wearer for enhanced fitting and wearing comfort, without excessively increased rigidity, includes an absorbent element having an absorber body and a wrapping sheet, and provided on its body side round and oval compressed areas, respectively. The round areas includes first and second compressed areas arranged respectively at intervals in the width and front-back directions, the second areas shifted from the first areas by half the intervals in the width and frond-back directions, the oval areas includes first compressed areas arranged between adjacent first round areas and between adjacent second round areas, with its major axis being aligned to the width direction, and second compressed areas, each arranged between first and second round areas with its major axis being aligned to a line connecting the first and second round areas. ## Claims ### Claim 1 A disposable diaper comprising: a liquid-pervious top sheet; a liquid-impervious backing sheet; and an absorbent element interposed therebetween, wherein the absorbent element comprising an absorber body for absorbing bodily waste, and a wrapping sheet wrapping an outer periphery of the absorber body, wherein round compressed areas devoid of straight or angular part and oval compressed areas devoid of straight or angular part is provided on the body side of the absorbent element, wherein the round compressed areas comprises first round compressed areas arranged at intervals in a width direction and a front-back direction of the diaper, wherein the round compressed areas further comprises second round compressed areas arranged at the intervals in the width direction and the front-back direction of the diaper, shifted from the first round compressed areas by half the intervals in the width direction and the front-back direction, wherein the oval compressed areas comprises first oval compressed areas, each arranged at a center between first round compressed areas adjacent to each other in the width direction or at a center between second round compressed areas adjacent to each other in the width direction, with a major axis of each first oval compressed area being aligned to the width direction, and wherein the oval compressed areas further comprises second oval compressed areas, each arranged at a center between a first round compressed area and a second round compressed area adjacent thereto in the width and front-back directions, with a major axis of the second oval compressed area being aligned to a virtual line connecting the first round compressed area and the second round compressed area adjacent thereto in the width and front-back directions. ### Claim 2 (depends on 1) The disposable diaper according to claim 1, wherein the first and second round compressed areas have a diameter of 1 to 3 mm, and the first and second oval compressed areas have a minor axis of 1 to 3 mm long and a major axis of 3 to 5 mm long. ### Claim 3 (depends on 1) The disposable diaper according to claim 1, wherein each of the intervals is 12 to 24 mm. ### Claim 4 (depends on 1) The disposable diaper according to claim 1, wherein a dent depth of the first and second round compressed areas is 0.25 to 1.00 mm, and a dent depth of the first and second oval compressed areas is 0.25 to 1.00 mm. ### Claim 5 A method for manufacturing a disposable diaper comprising a liquid-pervious top sheet, a liquid-impervious backing sheet, and an absorbent element interposed therebetween, the absorbent element comprising an absorber body for absorbing bodily waste, and a wrapping sheet wrapping an outer periphery of the absorber body, wherein the absorbent element is provided on its body side round compressed areas devoid of straight or angular part and oval compressed areas devoid of straight or angular part, the method comprising: a first step of wrapping the absorber body with the wrapping sheet via an adhesive to obtain an unworked absorbent element, and a second step of passing the unworked absorbent element obtained from the first step between an upper roller and a lower roller so as to make a thickness in a top-bottom direction into a predetermined compressed thickness, wherein the upper roller has on its roll surface round protrusions for forming the round compressed areas and oval protrusions for forming the oval compressed areas, and wherein the predetermined compressed thickness is 0.5 to 1.2 mm. ### Claim 6 (depends on 5) The method for manufacturing the disposable diaper according to claim 5, wherein outer peripheral ends of the round protrusions and the oval protrusions are round chamfered with a particular radius. ### Claim 7 (depends on 5) The method for manufacturing the disposable diaper according to claim 5, wherein the roll surface of the upper roller is coated with a silicone-based material. ### Claim 8 (depends on 2) The disposable diaper according to claim 2, wherein each of the intervals is 12 to 24 mm. ### Claim 9 (depends on 2) The disposable diaper according to claim 2, wherein a dent depth of the first and second round compressed areas is 0.25 to 1.00 mm, and a dent depth of the first and second oval compressed areas is 0.25 to 1.00 mm. ### Claim 10 (depends on 3) The disposable diaper according to claim 3, wherein a dent depth of the first and second round compressed areas is 0.25 to 1.00 mm, and a dent depth of the first and second oval compressed areas is 0.25 to 1.00 mm. ### Claim 11 (depends on 6) The method for manufacturing the disposable diaper according to claim 6, wherein the roll surface of the upper roller is coated with a silicone-based material.