# US 9,035,127 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 9,035,127 B2 - Document ID: US9035127B2 - Status: Granted - Kind: B2 - Application number: 13/824,500 - Filed: 2011-11-14 - Published: 2013-10-31 - Granted: 2015-05-19 - Earliest claimed: 2010-11-19 - Assignees: Unicharm Corporation - Applicants: Kaiyo Nakajima; Haruki Toda - Inventors: Kaiyo Nakajima; Haruki Toda - Web page: https://patentgrep.com/patent/US9035127B2 ## CPC - A61F 13/53747: {the layer is facing the topsheet (layer is part of the topsheet A61F13/511)} - A61F 13/49426: {the barrier having an absorbent medium} - A61F 13/5323: {having absorbent material located in discrete regions, e.g. pockets} - A61F 13/535: inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes ({A61F13/5323,} A61F13/537 take precedence) - A61F 2013/530525: {the maximum being at front or rear} - A61F 2013/530532: {the maximum being at certain depth in the thickness} - A61F 2013/530554: {and being fixed to a web} - A61F 2013/530562: {being arranged in discontinuous pattern} - A61F 2013/5355: {with terraced core} - A61F 2013/53795: {being a surge management layer} - 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 ensuring that even when excreted urine diffuses by running down the wearer's skin, the urine is prevented from leaking out of the absorbent article. The absorbent article comprises an absorbent sheet that has at least one absorbent polymer-existing region in which the absorbent polymer is sandwiched by at least one liquid-pervious sheet and at least one absorbent polymer-nonexisting region which is free of absorbent polymer. The at least a part of the absorbent sheet is disposed in a rear waist region, and a planar shape of the absorbent polymer-existing region disposed on the rear waist region side of the longitudinal center of the crotch region of the absorbent sheet is a nearly V-shaped with an apex facing in the direction from the front waist region to the rear waist region in the longitudinal direction of the absorbent article. ## Claims ### Claim 1 An absorbent article consisting of a front waist region, a rear waist region and a crotch region located between the front and rear regions in a longitudinal direction from a front side to a rear side, comprising: a liquid-pervious topsheet, a backsheet, an absorption body intervening between said topsheet and said backsheet, and an absorbent sheet between said topsheet and said absorption body, comprising at least one liquid-pervious sheet having sandwiched thereby an absorbent polymer, wherein: said absorbent sheet has at least one absorbent polymer-existing region in which said absorbent polymer is sandwiched by said at least one liquid-pervious sheet and at least one absorbent polymer-nonexisting region which is free of absorbent polymer, at least a part of said absorbent sheet is disposed in said rear waist region, and a planar shape of said absorbent polymer-existing region disposed on said rear waist region side of the longitudinal center in said crotch region of said absorbent sheet is a nearly V-shaped with an apex facing in the direction from said front waist region to said rear waist region in the longitudinal direction of said absorbent article. ### Claim 2 (depends on 1) The absorbent article as claimed in claim 1, wherein said at least one liquid-pervious sheet is a folded liquid-pervious sheet or two liquid-pervious sheets. ### Claim 3 (depends on 2) The absorbent article as claimed in claim 2, wherein: said absorbent polymer-existing region is divided into a plurality of segment regions by temporary tacking means joining said at least one liquid-pervious sheet sandwiching said absorbent polymer thereby. ### Claim 4 (depends on 3) The absorbent article as claimed in claim 3, wherein: said absorbent polymer-existing region is divided into a plurality of segment regions aligning in the width direction of said absorbent article, by joint means joining two liquid-pervious sheets sandwiching said absorbent polymer therebetween of said absorbent sheet, and the amount of the absorbent polymer charged into said plurality of segment regions is larger as the segment region is located closer to a widthwise center of said absorbent article and smaller as located further widthwise outward relative to the widthwise center. ### Claim 5 (depends on 4) The absorbent article as claimed in claim 4, wherein: a plurality of adhesive parts extending in the longitudinal direction of said absorbent article and aligning in a width direction of said absorbent article are provided on at least one of the liquid-pervious sheet surfaces sandwiching said absorbent polymer therebetween at least in the absorbent polymer-existing region of said absorbent sheet. ### Claim 6 (depends on 3) The absorbent article as claimed in claim 3, wherein: a plurality of adhesive parts extending in the longitudinal direction of said absorbent article and aligning in a width direction of said absorbent article are provided on at least one of the liquid-pervious sheet surfaces sandwiching said absorbent polymer therebetween at least in the absorbent polymer-existing region of said absorbent sheet. ### Claim 7 (depends on 2) The absorbent article as claimed in claim 2, wherein: said absorbent polymer-existing region is divided into a plurality of segment regions aligning in the width direction of said absorbent article, by joint means joining two liquid-pervious sheets sandwiching said absorbent polymer therebetween of said absorbent sheet, and the amount of the absorbent polymer charged into said plurality of segment regions is larger as the segment region is located closer to a widthwise center of said absorbent article and smaller as located further widthwise outward relative to the widthwise center. ### Claim 8 (depends on 7) The absorbent article as claimed in claim 7, wherein: a plurality of adhesive parts extending in the longitudinal direction of said absorbent article and aligning in a width direction of said absorbent article are provided on at least one of the liquid-pervious sheet surfaces sandwiching said absorbent polymer therebetween at least in the absorbent polymer-existing region of said absorbent sheet. ### Claim 9 (depends on 2) The absorbent article as claimed in claim 2, wherein: a plurality of adhesive parts extending in the longitudinal direction of said absorbent article and aligning in a width direction of said absorbent article are provided on at least one of the liquid-pervious sheet surfaces sandwiching said absorbent polymer therebetween at least in the absorbent polymer-existing region of said absorbent sheet. ### Claim 10 (depends on 9) The absorbent article as claimed in claim 9, wherein: a plurality of adhesive parts extending in the longitudinal direction of said absorbent article and aligning in the width direction of said absorbent article are provided on each of said liquid-pervious sheet surfaces sandwiching said absorbent polymer therebetween at least in the absorbent polymer-existing region of said absorbent sheet, and an adhesive part-to-adhesive part distance between adjacent adhesive parts out of the adhesive parts provided on the liquid-pervious sheet on the absorption body side in said absorbent sheet is smaller than an adhesive part-to-adhesive part distance of the adhesive parts provided on the liquid-pervious sheet on the topsheet side in said absorbent sheet. ### Claim 11 (depends on 1) The absorbent article as claimed in claim 1, wherein: said absorbent polymer-existing region is divided into a plurality of segment regions by temporary tacking means joining said at least one liquid-pervious sheet sandwiching said absorbent polymer thereby. ### Claim 12 (depends on 11) The absorbent article as claimed in claim 11, wherein: said absorbent polymer-existing region is divided into a plurality of segment regions aligning in the width direction of said absorbent article, by joint means joining two liquid-pervious sheets sandwiching said absorbent polymer therebetween of said absorbent sheet, and the amount of the absorbent polymer charged into said plurality of segment regions is larger as the segment region is located closer to a widthwise center of said absorbent article and smaller as located further widthwise outward relative to the widthwise center. ### Claim 13 (depends on 12) The absorbent article as claimed in claim 12, wherein: a plurality of adhesive parts extending in the longitudinal direction of said absorbent article and aligning in a width direction of said absorbent article are provided on at least one of the liquid-pervious sheet surfaces sandwiching said absorbent polymer therebetween at least in the absorbent polymer-existing region of said absorbent sheet. ### Claim 14 (depends on 11) The absorbent article as claimed in claim 11, wherein: a plurality of adhesive parts extending in the longitudinal direction of said absorbent article and aligning in a width direction of said absorbent article are provided on at least one of the liquid-pervious sheet surfaces sandwiching said absorbent polymer therebetween at least in the absorbent polymer-existing region of said absorbent sheet. ### Claim 15 (depends on 1) The absorbent article as claimed in claim 1, wherein: said absorbent polymer-existing region is divided into a plurality of segment regions aligning in the width direction of said absorbent article, by joint means joining two liquid-pervious sheets sandwiching said absorbent polymer therebetween of said absorbent sheet, and the amount of the absorbent polymer charged into said plurality of segment regions is larger as the segment region is located closer to a widthwise center of said absorbent article and smaller as located further widthwise outward relative to the widthwise center. ### Claim 16 (depends on 15) The absorbent article as claimed in claim 15, wherein: a plurality of adhesive parts extending in the longitudinal direction of said absorbent article and aligning in a width direction of said absorbent article are provided on at least one of the liquid-pervious sheet surfaces sandwiching said absorbent polymer therebetween at least in the absorbent polymer-existing region of said absorbent sheet. ### Claim 17 (depends on 1) The absorbent article as claimed in claim 1, wherein: a plurality of adhesive parts extending in the longitudinal direction of said absorbent article and aligning in a width direction of said absorbent article are provided on at least one of the liquid-pervious sheet surfaces sandwiching said absorbent polymer therebetween at least in the absorbent polymer-existing region of said absorbent sheet. ### Claim 18 (depends on 17) The absorbent article as claimed in claim 17, wherein: a plurality of adhesive parts extending in the longitudinal direction of said absorbent article and aligning in the width direction of said absorbent article are provided on each of said liquid-pervious sheet surfaces sandwiching said absorbent polymer therebetween at least in the absorbent polymer-existing region of said absorbent sheet, and an adhesive part-to-adhesive part distance between adjacent adhesive parts out of the adhesive parts provided on the liquid-pervious sheet on the absorption body side in said absorbent sheet is smaller than an adhesive part-to-adhesive part distance of the adhesive parts provided on the liquid-pervious sheet on the topsheet side in said absorbent sheet. ### Claim 19 (depends on 1) The absorbent article as claimed in claim 1, wherein said absorbent polymer-existing region is tilted at an angle between 45° and 80° relative to the straight line extending in the longitudinal direction of said absorbent article. ### Claim 20 (depends on 1) The absorbent article as claimed in claim 1, wherein said absorbent sheet is disposed across the front waist region, the crotch region and the rear waist region.