Absorbent and method for producing same

This absorbent core (2) has a first core (3) and a second core (4) that is thinner than the first core (3). The first core (3) is disposed between the core-clad sheet (5) and the second core (4). The second core (4) includes two opposing base sheets (4S) and a water-absorbent polymer disposed between the two sheets (2S), and the two sheets (4S) are bonded to each other by an adhesive. One or more groups of bonding parts (6) are provided in pairs on both sides of the first core (3) in the longitudinal direction (X) and/or both sides of the first core (3) in the transverse direction (Y), said bonding parts being formed by directly bonding the core-clad sheets (5) and the second core (4) without passing through the first core (3). The portion of the first core (3) that is sandwiched by the joined portion (6) is in a state in which the core-coated sheet (5) and the second core (4) are compressed in the thickness direction. 本发明的吸收性芯(2)具有第一芯(3)和比该第一芯(3)厚度薄的第二芯(4)。第一芯(3)配置在包芯片(5)与第二芯(4)之间。第二芯(4)包括相对的2个基材片(4S)、和配置在两个