PROBLEM TO BE SOLVED: To provide a disposable diaper which is easy to wear.SOLUTION: A disposable diaper disclosed in this invention has a waist expanding and contracting part 20 formed by fixing one or a plurality of elastic expanding and contracting members 10 extending in a width direction of the diaper between two layers of sheets in an expanded state in both a front body and a back body or one of them. In addition, a gather forming sheet 30 is disposed on both a skin facing surface side and a skin non-facing surface side of the waist expanding and contracting part 20 or one of them. The waist expanding and contracting part 20 and the gather forming sheet 30 are joined to each other with a plurality of joining parts 40 extending in the width direction. Consequently, spaces are created between the layers of the waist expanding and contracting part 20 and the gather forming sheet 30 in regions between the plurality of the joining parts 40, and gathers extending in the width direction are formed.COPYRIGHT: (C)2014,JPO&INPIT【課題】着用しやすい使い捨ておむつを提供する。【解決手段】本発明の使い捨ておむつは、前身頃及び後身頃の両方又はいずれか一方において、二層のシートの間に、おむつの幅方向に沿って延びる一又は複数本の弾性伸縮部材10を伸長状態で固定することによって腰周り伸縮部20が形成されている。また、腰周り伸縮部20の肌対向面側及び肌非対向面側の両方又はいずれか一方に襞形成シート30が配置されている。これらの腰周り伸縮部20と襞形成シート30は、幅方向に向かって延びる複数の接合部40によって互いに接合されている。これにより、本発明は、複数の接合部40の間の領域おいて、腰周り伸縮部20と襞形成シート30の層間に空間が生じ、幅方向に向かって延びる襞が形成される。【選択図】図4
