PROBLEM TO BE SOLVED: To provide a disposable diaper excellent in retainability of a surface gap, and easy to produce.SOLUTION: A disposable diaper is such that: in a lower layer absorber 23B, at least a slender lower layer penetration part 60 penetrating into the thickness direction is extended along the front/back direction in the width direction center part of a crotch part C2 in an upper layer absorber 23A, at least an upper layer penetration part 50 penetrating into the thickness direction is provided in the front/back direction region corresponding to the lower layer penetration part 60 the upper layer penetration part 50 has a slender intermediate part 51 positioned above the lower layer penetration part 60 and extending to the front/back direction, and a projection part 52 projecting to width direction both sides in a rear side position in the intermediate part 51 the side edge of the projection part 52 has a shape where at least part of the front side is positioned in the width direction outside toward the rear side the intermediate part of the upper layer penetration part 50 is extended to the front end of the upper layer absorber 23A, and opened on the front end of the upper layer absorber 23A the front end of the upper layer absorber 23A is positioned on similar to the front end of the lower layer penetration part 60, or the rear side and the lower layer penetration part 60 is provided in the front/back direction middle part of the lower layer absorber 23B.COPYRIGHT: (C)2015,JPO&INPIT【課題】表面間隙の維持性に優れ、製造も容易である使い捨ておむつを提供する。【解決手段】下層吸収体23Bには、少なくとも股間部C2の幅方向中央部に、厚み方向に貫通する細長状の下層貫通部60が前後方向に沿って延在され、上層吸収体23Aには、少なくとも下層貫通部60と対応する前後方向範囲内に、厚み方向に貫通する上層貫通部50が設けられ、上層貫通部50は、下層貫通部60上に位置し前後方向に延在する細長状の中間部分51と、この中間部分51における後側位置の幅方向両側に張り出した張出部分52とを有し、張出部分52の側縁は、少なくとも前側の一部が後側に向かうにつれて幅方向外側に位置する形状とされ、上層貫通部50の中間部は上層吸収体23Aの前端まで延在されて上層吸収体23Aの前端に開口されており、上層吸収体23Aの前端は下層貫通部60の前端と同じか後側に位置されており、下層貫通部60は下層吸収体23Bの前後方向中間に設けられている。【選択図】図6
