Provided is a disposable diaper: that can be fitted to the body of a wearer with relative ease by bending a front waist region of the main diaper body firmly to the outside and the bent locations of which do not curl when the diaper is worn. An absorbent core (22) has a bending guide section (24) that extends in the direction of the horizontal axis (Q) in the front waist region (11), and elastic side regions (43), which can expand and contract along both sides (30, 31), are formed on both sides (30, 31) of a crotch region (13). Low elasticity sections (46) having a low contraction rate compared to the other locations (highly elastic sections) (47), which extend toward the rear waist region (12) from the vicinity of the rear edge (24a) of the bending guide section (24), are formed on the elastic side regions (43).本發明之課題在提供一種,藉由比較簡易的操作,可確實將尿布本體的前腰域朝外側彎折,並與使用者的身體貼合,並且在穿用時,彎折部位不會有彎曲的情況的用後即棄式穿著用物品。解決手段,吸收性芯(22)在前腰域(11)具有朝橫軸Q的方向延伸的彎折引導部(24),在褲檔域(13)的兩側部(30、31),形成有可沿著兩側部(30、31)伸縮的側面彈性域(43)。又,在側面彈性域(43)形成有比從彎折引導部(24)的後端緣(24a)附近朝向後腰域(12)延伸的其他的部位(高彈性部)(47)收縮率低的低彈性部(46)。Q...橫軸P...縱軸10...用後即棄式紙尿褲11...前腰域12...後腰域12a...側緣12b...側緣13...褲檔域14...尿布本體15...帶式扣合件舌片15b...自由部15a...固定部16a...固定部16b...自由部16...帶式扣合件舌片17...第1黏扣要素18...第2黏扣要素20...頂面薄片21...背面薄片22b...後端緣22c...側緣22d...側緣22a...前端緣22...吸收性芯24a...後端緣24...彎折引導部24b...彎折引導部26...防漏薄片27...隔離薄片28...前端部29...後端部30...側部31...側部35...前方側部短纖36...後方側部短纖37...近位緣部38...前固定端部39...後固定端部40...遠位緣部41...第1彈性要素42...第2彈性要素43...側面彈性域44...側邊彈性要素46...低彈性部47...高彈性部48...第3黏扣要素49...第1凹狀線50...第2凹狀線
