PROBLEM TO BE SOLVED: To provide an underpants-type disposable diaper which maintains the shape of a cutout to allow the cutout to easily attract attention.SOLUTION: A diaper 11 comprises an elastic abdomen-side waistline part 2, a back-side waistline part 3, and an absorptive body 4. The abdomen-side waistline part 2 has a cutout 20 at the center part in the width direction of an upper end region, and the number of sheets of members that are stacked in the abdomen-side waistline part 2 at least at a part of an edge region 20a including an outer edge 200 of the cutout 20 is greater than the number of sheets of members that are stacked in the abdomen-side waistline part 2 at a leg line peripheral region 2a which is a region positioned at both sides in the width direction of the absorptive body 4 within the lower end region of the abdomen-side waistline part 2.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2017,JPO&INPIT【課題】切り欠きの形状を維持して切り欠きを目立ちやすくすることが可能なパンツ型使い捨ておむつを提供する。【解決手段】伸縮性の腹側胴回り部2と、背側胴回り部3と、吸収性本体4とを備えたおむつ11であって、腹側胴回り部2は、上端領域の幅方向の中央部に切り欠き20を有し、切り欠き20の外縁200を含む縁領域20aの少なくとも一部において腹側胴回り部2に積層されている部材の枚数は、腹側胴回り部2の下端領域のうち吸収性本体4の幅方向の両側に位置する領域(脚回り周辺領域)2aにおいて腹側胴回り部2に積層されている部材の枚数よりも多い。【選択図】図3
