Provided is a diaper (10) which includes an absorbent body (20) having a front surface sheet (21), a rear surface sheet (22), and an absorbent core (24), and which has an article longitudinal direction (X) and an article lateral direction (Y). The absorbent core (24) is formed of a sheet-like member (1) having a plurality of absorbent units (4) that each include a long base portion (2) and water-absorbing polymer particles (3). The sheet-like member (1) has a plurality of unit sections arranged in the longitudinal direction (x1 direction), the unit sections having a plurality of the absorbent units (4) aligned in the lateral direction (y1 direction). The sheet-like member (1) has a pair of longitudinal joined sections (41, 41), a pair of lateral joined sections (42, 42), and intermediate lateral joined sections (43, 43). The sheet-like member (1) is joined to a constituent part adjacent in a thickness direction (Z) at the positions of the pair of longitudinal joined sections (41, 41), the pair of lateral joined sections (42, 42), and the intermediate lateral joined sections (43, 43), and the unit sections have portions in which the top and bottom in the thickness direction (Z) are not joined to the constituent part.La présente invention concerne une couche (10) qui comprend un corps absorbant (20) ayant une feuille de surface avant (21), une feuille de surface arrière (22) et une partie centrale absorbante (24), et qui a une direction longitudinale d'article (X) et une direction latérale d'article (Y). La partie centrale absorbante (24) est formée d'un élément en forme de feuille (1) ayant une pluralité d'unités absorbantes (4) comprenant chacune une partie de base longue (2) et des particules de polymère absorbant l'eau (3). L'élément en forme de feuille (1) a une pluralité de sections unitaires agencées dans la direction longitudinale (direction x1), les sections unitaires ayant une pluralité d'unités absorbantes (4) alignées dans la direction latérale (direction
