The device is to effectively prevent the unintended deformation of an absorbent member, which is caused by the contraction force of gathers, without the deterioration of inherent flexibility of a block-shaped absorbent core against deformation. An absorbent article includes side flaps that extend outward from both widthwise side edges of an absorbent member, the side edges being located along. An absorbent core includes block regions and non-block regions positioned on an outer periphery of the block regions. The block regions include a block structure having high-basis weight portions and a low-basis weight portion, and an entire periphery of each of the high-basis weight portions is surrounded by the low-basis weight portion so that the block regions are independent of each other. A side flap-elastic member extending in the longitudinal direction is disposed on the side flaps under a stretched state, and the block region extends outward in the longitudinal direction beyond end portions of the side flap-elastic members.本創作之課題在於不會損壞塊狀之吸收性芯體本來具有之對於變形之柔軟度,且有效地防止由褶皺之收縮力所引起之吸收體之意料外之變形。吸收性物品10包含自吸收體20之沿著長度方向之兩側緣向寬度方向外側延伸之側翼24。吸收性芯體22包含塊狀區域235及位於塊狀區域235之外周之非塊狀區域236。塊狀區域235具有包含高基重部與低基重部之塊狀構造,各高基重部之周圍係遍及其整個區域由低基重部包圍而各自獨立。於長度方向上延伸之側翼彈性構件163以伸長狀態配置於側翼24,塊狀區域235越過側翼彈性構件163之端部163a、163b而向長度方向外側延伸。10‧‧‧尿布21‧‧‧正面片材22‧‧‧吸收性芯體24‧‧‧側翼161‧‧‧防漏壁彈性構件161A‧‧‧端部161B‧‧‧端部162‧‧‧防漏壁形成用片材163‧‧‧側翼彈性構件163A‧‧‧端部163B‧‧‧端部164‧‧‧腰褶皺形成用之彈性片材165a‧‧‧彈性構件165b‧‧‧彈性構件234a‧‧‧高基重部234b‧‧‧低基重部235‧‧‧塊狀區域236‧‧‧非塊狀區域237A‧‧‧腹側部高基重部群237B‧‧‧背側部高基重部群237c‧‧‧下襠部高基重部群A‧‧‧腹側部B‧‧‧背側部C‧‧‧下襠部CL‧‧‧長度方向中心線F‧‧‧緊固帶K‧‧‧邊界部W‧‧‧腰部開口緣X‧‧‧寬度方向Y‧‧‧長度方向
