# US 11,026,851 B2 · Absorbent article > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,026,851 B2 - Document ID: US11026851B2 - Status: Granted - Kind: B2 - Application number: 16/063,730 - Filed: 2016-09-27 - Published: 2019-08-01 - Granted: 2021-06-08 - Earliest claimed: 2015-12-28 - Assignees: Unicharm Corporation - Applicants: Unicharm Corporation - Inventors: Kyota Saito; Jirapa Changcharoen; Sarinee Pichadkitjawat - Web page: https://patentgrep.com/patent/US11026851B2 ## CPC - A61F 13/5655: {adjustable pants type diapers (adjustable otherwise than by the fasteners A61F13/493)} - A61F 13/4963: {characterized by the seam} - A61F 13/5638: {adjustable open type diapers (adjustable otherwise than by the fasteners A61F13/493)} - A61F 2013/49074: {hourglass; dog bone-shaped} - 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 article includes: a front waist portion extending along the lateral direction; a back waist portion extending along the lateral direction; and a crotch portion provided between the front waist portion and the back waist portion. A lateral end portion of the back waist portion on a one side and a lateral end portion of the front waist portion on the one side are joined by a first joining portion. The back waist portion has a fastening portion provided on another side in the lateral direction, and the fastening portion is capable of being fastened to the front waist portion when putting on the absorbent article. The front waist portion has a target region to which the fastening portion is to be fastened, and a lateral end of the target region on the one side is located on the one side relative to a lateral central position of the crotch portion. ## Claims ### Claim 1 An absorbent article having a longitudinal direction, a lateral direction intersecting the longitudinal direction, and a front-back direction intersecting the longitudinal direction and the lateral direction, the absorbent article comprising: a front waist portion extending along the lateral direction; a back waist portion extending along the lateral direction; and a crotch portion provided between the front waist portion and the back waist portion, wherein a lateral end portion of the back waist portion on a first side of the absorbent article and a lateral end portion of the front waist portion on the first side are joined by a first joining portion, the back waist portion has a fastening portion provided on a second side of the absorbent article opposite to the first side in the lateral direction, the fastening portion being configured to be fastened to the front waist portion when putting on the absorbent article, the front waist portion has a target region, the target region being a region to which the fastening portion is to be fastened, the crotch portion has a central line that bisects a dimension of the crotch portion in the lateral direction, a lateral end of the target region on the first side is located, in the lateral direction, between the lateral end portion of the front waist portion and the central line of the crotch portion, when putting on the absorbent article, a first leg opening is formed on the first side of the absorbent article and a second leg opening is not formed on the second side of the absorbent article, and the absorbent article is configured such that the second leg opening is formed by fastening the fastening portion to the target region while one of a wearer's legs has been inserted through the first leg opening. ### Claim 2 (depends on 1) The absorbent article according to claim 1, wherein the lateral end of the target region on the first side is located away from the central line of the crotch portion by a distance equal to a length of the fastening portion in the lateral direction. ### Claim 3 (depends on 1) The absorbent article according to claim 1, wherein the front waist portion has a further lateral end portion on the second side of the absorbent article, a lateral end of the target region on the second side is located, in the lateral direction, between the central line of the crotch portion and the further lateral end portion of the front waist portion on the second side of the absorbent article, and the lateral end of the target portion on the second side is located away from the further lateral end portion of the front waist portion on the second side by a distance equal to a length of the fastening portion in the lateral direction. ### Claim 4 (depends on 3) The absorbent article according to claim 3, wherein the crotch portion has a lateral end on the second side of the absorbent article, and the lateral end of the target region on the second side is located between the central line of the crotch portion and the lateral end of the crotch portion. ### Claim 5 (depends on 1) The absorbent article according to claim 1, wherein the front waist portion has an elastic region, the elastic region is provided in at least a part of a region between the lateral end portion of the front waist portion on the first side and the central line of the crotch portion, and the elastic region is stretchable and contractible in the lateral direction. ### Claim 6 (depends on 5) The absorbent article according to claim 5, wherein the elastic region provided in the front waist portion does not exert on the target region a force for causing the target region to contract in the lateral direction. ### Claim 7 (depends on 1) The absorbent article according to claim 1, wherein an elastic region is provided in at least a part of the back waist portion, and the elastic region is stretchable and contractible in the lateral direction. ### Claim 8 (depends on 7) The absorbent article according to claim 7, wherein the elastic region provided in the back waist portion does not exert on the fastening portion a force for causing the fastening portion to contract in the lateral direction. ### Claim 9 (depends on 1) The absorbent article according to claim 1, wherein a longitudinal length of the fastening portion is shorter than a longitudinal length of the first joining portion. ### Claim 10 (depends on 1) The absorbent article according to claim 1, wherein a leg-gather elastic member is provided in each of two lateral end portions of the crotch portion, the leg-gather elastic member is stretchable and contractible in the longitudinal direction, and a longitudinal range on which the leg-gather elastic member exerts its elastic force does not overlap with the fastening portion.