PROBLEM TO BE SOLVED: To provide a pants-type disposable diaper which improves fit performance from a gluteal cleft to a crotch and has a crotch part which hardly gathers when worn.SOLUTION: The pants-type disposable diaper is characterized by providing a curved fitting part 40 bending in such a manner as to enter the wearers gluteal cleft in a gluteal cleft facing part in a back body B, by providing elastic lifting members 26, 28 exerting contracting force of a component of a lengthwise direction in a manner to hold up the crotch part to a waist side respectively on an outer packaging sheet 20 in a front body F and an outer packaging sheet 20 in the back body B, and by having a tensile stress in the front F when elastically deformed in the lengthwise direction that is greater than the tensile stress in the back body B when elastically deformed in the lengthwise direction.COPYRIGHT: (C)2012,JPO&INPIT【課題】臀裂から股間にかけてのフィット性を改善し、装着時に股間部がモコモコし難い、パンツタイプ使い捨ておむつを提供する。【解決手段】上記課題は、後身頃Bにおける臀裂対向部に、装着者の臀裂に入り込むように折れ曲がる屈曲フィット部40が設けられ、前身頃Fにおける外装シート20及び後身頃Bにおける外装シート20のそれぞれに、股間部をウエスト側に持ち上げるように縦方向成分の収縮力を発揮する引上げ弾性部材26…,28…が設けられるとともに、前身頃Fにおける縦方向の弾性変形時引張応力が、後身頃Bにおける縦方向の弾性変形時引張応力よりも大きい、ことを特徴とするパンツタイプ使い捨ておむつにより解決される。【選択図】図10
