This disposable diaper (1) has a side panel (3) which extends outward in the X direction attached to each of both sides (2S) of one end side of an absorbent body (2) in the Y direction which comprises an absorbent (23) with liquid retention properties, and a fastening tape (4) which extends outward in the X direction attached to an exterior side (3S) that extends along the Y direction of the side panel (3). The fastening tape (4) is bonded to one side of the side panel (3) via a bonding region (6). The bonding region (6) comprises a first bonding region (6S) which is bonded by an adhesive and a non-bonded region (7) or a second weak bonding region (6W) which is disposed adjacent to the first bonding region (6S) on the exterior side in the X direction and has a bonding strength that is weaker than that of the first bonding region (6S).本發明之尿布(1)係於具有液體保持性之吸收體(23)之吸收性本體(2)之Y方向之一端側之兩側部(2S)分別安裝有向X方向外側延伸之側片(3),於側片(3)之沿Y方向之外側側部(3S)安裝有向X方向外側延伸之黏扣帶(4)。黏扣帶(4)經由接合區域(6)而接合於側片(3)之單面。接合區域(6)包括:第1接合區域(6S),其藉由接著劑而接合;及第2弱接合區域(6W),其鄰接配置於較第1接合區域(6S)更靠X方向外側,且接合強度弱於第1接合區域(6S)之接合強度。1‧‧‧拋棄式尿布2‧‧‧吸收性本體2S‧‧‧側部2S1‧‧‧側緣3‧‧‧側片3S‧‧‧外側側部3S1‧‧‧外側側緣4‧‧‧黏扣帶6‧‧‧接合區域6S‧‧‧第1接合區域6W‧‧‧第2弱接合區域24‧‧‧側部片材31‧‧‧肌膚側片材31S‧‧‧延伸部32‧‧‧非肌膚側片材32S‧‧‧延伸部33‧‧‧彈性構件33I‧‧‧內側固定端部33O‧‧‧外側固定端部35‧‧‧本體側接著劑層36‧‧‧外側接著劑層37‧‧‧中間接著劑層38‧‧‧非接著區域61‧‧‧密封接合部(熔接部)61G‧‧‧密封接合部群(熔接部群)62‧‧‧非密封接合部(非熔接部)63‧‧‧接著劑接合部611‧‧‧第1密封接合部(第1熔接部)611G‧‧‧第1密封接合部群(第1熔接部群)612‧‧‧第2密封接合部(第2熔接部)612B‧‧‧第2密封接合部(第2熔接部)612C‧‧‧第2密封接合部(第2熔接部)612G‧‧‧第2密封接合部群(第2熔接部群)IL1‧‧‧第1假想線IL2‧‧‧第2假想線IL3‧‧‧第3假想線PD1‧‧‧交點PD2‧‧‧交點PU1‧‧‧交點PU2‧‧‧交點X‧‧‧方向Y‧‧‧方向
