Kaiyo Nakajima, Kagawa, Japan; and Haruki Toda, Kagawa, Japan. Assigned to Unicharm Corporation, Ehime, Japan.

Filed: 11/14/11
Issued: 3/1/16

An absorbent article consisting of a front waist region, a rear waist region and a crotch region located between these 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 topsheet, said backsheet and said absorption body are disposed across said front waist region, said crotch region and said rear waist region, said absorbent sheet is disposed in at least a part of said rear waist region, the absorbent article has a urination region that is a region having not disposed therein said absorbent sheet and covering the wearer’s urination orifice, and a buttock region that is a region having disposed therein said absorbent sheet and covering the wearer’s buttocks, when an artificial urine is dropped and absorbed in said urination region, the return amount of said artificial urine in said buttock region takes a value of not more than 200 times less than the return amount of said artificial urine in said urination region, said artificial urine comprises 200 g of urea, 80 g of sodium chloride, 80 g of magnesium sulfate, 8 g of calcium chloride and about 1 g of a dye per 10 liters of ion-exchanged water, the return amount of said artificial urine in said buttock region when said artificial urine is dropped and absorbed in said buttock region takes a value of 0.7 or less of the return amount of said artificial urine in said urination region when said artificial urine is dropped and absorbed in said urination region, said absorption body has a penetration part which penetrates therethrough in a thickness direction at a widthwise central position and which extends longitudinally across the crotch region up to or into the front waist region.