# US 11,298,275 B2 · Disposable diaper > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,298,275 B2 - Document ID: US11298275B2 - Status: Granted - Kind: B2 - Application number: 16/320,878 - Filed: 2017-07-25 - Published: 2019-05-30 - Granted: 2022-04-12 - Earliest claimed: 2016-07-28 - Assignees: Kao Corporation - Applicants: Kao Corporation - Inventors: Yumi Furukawa; Hiromichi Suzuki - Web page: https://patentgrep.com/patent/US11298275B2 ## CPC - A61F 13/5148: {having an impervious inner layer and a cloth-like outer layer} - A61F 13/49001: {having preferential bending zones, e.g. fold lines or grooves} - A61F 13/49011: {the elastic means is located at the waist region} - A61F 13/49017: {the elastic means being located at the crotch region} - A61F 13/49019: {the elastic means being placed longitudinally, transversely or diagonally over the article} - A61F 13/4902: {characterised by the elastic material} - A61F 13/511: Topsheet, i.e. the permeable cover or layer facing the skin - A61F 13/5622: {specially adapted for diapers or the like} - A61F 13/51401: {characterised by the material} - A61F 2013/49076: {as "I"-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 A disposable diaper 1 has an elasticized leg cuff 10 on each longitudinally extending, lateral side of the crotch portion C. The elasticized leg cuff 10 includes an elastic member fixing sheet 5, an elastic member 6, an inner sheet 31, and an outer sheet 32 in order from the skin facing side. The inner sheet 31 and the outer sheet 32 are bonded to each other via a plurality of longitudinally extending and laterally spaced bonds 7. The elastic member 6 is located between the elastic member fixing sheet 5 and the inner sheet 31 and arranged at a location that does not overlap the bonds 7. ## Claims ### Claim 1 A disposable diaper comprising a topsheet on a skin facing side of the disposable diaper, a backsheet on a non-skin facing side of the disposable diaper, and an absorbent member located between the topsheet and the backsheet, and having a longitudinal direction along a wearer's front-to-back direction and a lateral direction perpendicular to the longitudinal direction, the disposable diaper having a crotch portion and an elasticized leg cuff arranged on each longitudinally extending lateral side of the crotch portion, the elasticized leg cuff comprising an elastic member fixing sheet, an elastic member, an inner sheet, and an outer sheet in order from the skin facing side, the inner sheet and the outer sheet being bonded to each other via a plurality of longitudinally extending and laterally spaced bonds in a continuous stripe pattern, and in the elasticized leg cuff, the inner sheet and the outer sheet being not bonded at an area other than the bonds, the elastic member being located between the elastic member fixing sheet and the inner sheet and arranged at a location that does not overlap any of the bonds in the lateral direction, and thereby (i) restraining the outer sheet from being deformed into a finely wavy condition caused by deformation of the elastic member and (ii) allowing the outer sheet to possess a gentle wavy visual appearance. ### Claim 2 (depends on 1) The disposable diaper according to claim 1, wherein the elastic member has the form of yarn. ### Claim 3 (depends on 2) The disposable diaper according to claim 2, wherein the elastic member has a rectangular, square, circular, elliptic, or polygonal cross-sectional shape. ### Claim 4 (depends on 1) The disposable diaper according to claim 1, wherein the elastic member has a width of 0.1 to 0.3 mm measured in the lateral direction. ### Claim 5 (depends on 1) The disposable diaper according to claim 1, wherein the bonds are formed of adhesive. ### Claim 6 (depends on 1) The disposable diaper according to claim 1, wherein the elastic member is fixed in a longitudinally stretched condition between the elastic member fixing sheet and the inner sheet. ### Claim 7 (depends on 1) The disposable diaper according to claim 1, wherein the elastic member is fixed between the elastic member fixing sheet and the inner sheet by applying adhesive to a whole circumference of the elastic member and then sandwiching the elastic member between the elastic member fixing sheet and the inner sheet. ### Claim 8 (depends on 1) The disposable diaper according to claim 1, wherein the bonds are formed by applying adhesive in a stripe pattern. ### Claim 9 (depends on 1) The disposable diaper according to claim 1, wherein the elastic member is located between two adjacent bonds in the lateral direction. ### Claim 10 (depends on 1) The disposable diaper according to claim 1, wherein the disposable diaper has the elastic member located laterally outside two adjacent bonds. ### Claim 11 (depends on 1) The disposable diaper according to claim 1, wherein the inner sheet is the backsheet extending from each lateral side edge of the absorbent member. ### Claim 12 (depends on 1) The disposable diaper according to claim 1, wherein a distance (L1) between adjacent bonds is 0.5 to 10.0 mm in the lateral direction. ### Claim 13 (depends on 1) The disposable diaper according to claim 1, wherein a distance (L1) between adjacent bonds is 0.7 to 7.0 mm in the lateral direction. ### Claim 14 (depends on 1) The disposable diaper according to claim 1, wherein a distance (L2) between the elastic member and its adjacent bond is 0.5 to 10.0 mm in the lateral direction. ### Claim 15 (depends on 1) The disposable diaper according to claim 1, wherein a distance (L2) between the elastic member and its adjacent bond is 0.7 to 7.0 mm in the lateral direction. ### Claim 16 (depends on 1) The disposable diaper according to claim 1, wherein the elastic member is located between two adjacent bonds, and a distance (L2) on both sides of the elastic member is each 0.5 to 10.0 mm in the lateral direction. ### Claim 17 (depends on 1) The disposable diaper according to claim 1, wherein the bonds each have a width (W) of 0.5 to 5.0 mm in the lateral direction. ### Claim 18 (depends on 1) The disposable diaper according to claim 1, wherein the elasticized leg cuff has two or more elastic members, and two adjacent elastic members have at least one of the bonds therebetween. ### Claim 19 (depends on 1) The disposable diaper according to claim 1, having opposed lateral side edges of the crotch portion concaved inwardly in the lateral direction. ### Claim 20 (depends on 1) The disposable diaper according to claim 1, wherein the crotch portion has the inner sheet and the outer sheet over the entire width thereof in the lateral direction, and the inner sheet and the outer sheet are bonded to each other even in the region overlapping the absorbent member via a second plurality of longitudinally extending and laterally spaced bonds. ### Claim 21 (depends on 1) The disposable diaper according to claim 1, wherein said diaper further comprises a pair of fastening tapes.