PROBLEM TO BE SOLVED: To make slip-down prevention property excellent by preventing slippage of a girth part and a waist part from being interlocked with each other, raise easiness of wearing without hindering the action of the legs of a wearer, and improve the appearance and touch of a diaper.SOLUTION: An underpants-type disposable diaper 1 is such that a back body sheet 20 and a front body sheet 30 are each provided with slippage-absorbing zones 2 and 3 in which a gap between specific elastic expansion members is set larger than a gap between elastic expansion members in an adjacent peripheral area the slippage-absorbing zone 3 provided on the front body sheet 30 is deviated to a crotch side more than the slippage-absorbing zone 2 provided on the back body sheet 20 and there is a relative difference (L2-L1) between a distance L2 from a waist opening end to an upper end of the slippage-absorbing zone provided on the front body sheet 30, and a distance L1 from a waist opening end to an upper end of the slippage-absorbing zone provided on the back body sheet 20.COPYRIGHT: (C)2014,JPO&INPIT【課題】胴周り部とウエスト部のずれを連動させないようにしてずり落ち防止性に優れるとともに、着用者の脚の動きを妨げず、はかせ易さを向上し、且つおむつの外観及び肌触りを改善する。【解決手段】パンツ型使い捨ておむつ1において、後身頃用シート20及び前身頃用シート30のそれぞれに、特定の弾性伸縮部材間の間隔を隣接する周辺領域の弾性伸縮部材間の間隔よりも大きく設定したズレ吸収緩衝帯2,3が設けられ、前身頃用シート30に設けられるズレ吸収緩衝帯3を、後身頃用シート20に設けられるズレ吸収緩衝帯2よりも股下側に偏倚させるとともに、前記前身頃用シート20に設けられたズレ吸収緩衝帯上端までのウエスト開口端部からの距離L2と、前記後身頃用シート30に設けられたズレ吸収緩衝帯上端までのウエスト開口端部からの距離L1とに相対差(L2-L1)を有する。【選択図】図2
