PROBLEM TO BE SOLVED: To provide a disposable diaper for a pet fitted satisfactorily for the waist of the pet.SOLUTION: A disposable diaper for a pet comprises: a back side trunk periphery 130 a belly side trunk periphery 110 a crotch area 120 two end portions 130A and 110A in the diaper longitudinal direction two end portions 120A in a diaper longitudinal direction cross direction a tail insertion opening 190 an absorbent core 200 an absorbent core non-arranged region 170 a fixing portion 300 including a flap portion 150 disposed in said belly side waist and having an end portion in said back side direction, a stationary portion 320 arranged in said flap portion 150, and a free portion 310 extending from said flap portion 150 a berry side trunk periphery stretchable elastic member 520 and a fixing area 900 for receiving said fixing portion 300, wherein said stationary portion of said fixing portion and said berry side trunk periphery stretchable elastic member are overlapped.COPYRIGHT: (C)2014,JPO&INPIT【課題】ペットの胴周りに対し良好にフィットするペット用使い捨ておむつを提供する。【解決手段】背側胴周り域130と、腹側胴周り域110と、股下域120と、おむつ長手方向上における両端部130A、110Aと、おむつ長手交差方向上における両端部120Aと、尻尾挿通開口190と、吸収性コア200と、吸収性コア非配置領域170と、前記腹側胴周り域に設けられるとともに前記背側方向に端部を有するフラップ部150と、該フラップ部150に配置される固定部320と、該フラップ部150から延出する自由部310とを有する止着部300と、腹側胴周り用伸縮性弾性部材520と、前記止着部300を受ける止着領域900とを有し、前記止着部の前記固定部と、前記胴周り用伸縮性弾性部材が重ねられるペット用使い捨ておむつ。【選択図】図1
