| 摘要 |
PROBLEM TO BE SOLVED: To provide an underpants-type disposable diaper having improved fit to a part from a gluteal cleft to a crotch and less prone to give a wearer a puffy and discomfort feeling at a crotch portion during wearing.SOLUTION: The underpants-type disposable diaper includes: at an intergluteal cleft facing portion of a back body part B, a bending fit portion 40 which is bent so as to enter into the intergluteal cleft of a wearer; and, at an outer sheet 20 in each of the front body part F and the back body part B, a lifting elastic member 26..., and 28... which exerts a contraction force of a vertical-direction component to lift a crotch portion toward a waist side. A tensile stress on the front body part F undergoing vertical elastic deformation is larger than a tensile stress on the back body part B undergoing vertical elastic deformation, and thereby, in a wearing state, the crotch portion is lifted while moving frontward so as to be fitted to the crotch, and the front end of the bending fit portion 40 is pulled frontward so as to be fitted in the intergluteal cleft of the wearer while the bending fit portion 40 retaining the bending state. |
