Absorbent article and manufacturing apparatus for absorbent article

A manufacturing apparatus for an absorbent article including a liquid permeable topsheet, a liquid impermeable sheet, and an absorber interposed between the topsheet and the liquid impermeable sheet and configured to absorb liquid, the manufacturing apparatus being configured to form a groove in a predetermined area of the topsheet of the absorbent article, and comprising:

• a first roll configured to rotate in a machine direction which is a direction of flow of steps for manufacturing the absorbent article, while being in contact with an intermediate continuum obtained by stacking the absorber on a continuum of the topsheet;
• a second roll placed facing the first roll with the intermediate continuum in between and configured to rotate in the machine direction, and
• apparatus for applying the liquid permeable sheet to the intermediate continuum after the top surface groove, back surface groove and recess have been formed in the intermediate continuum, wherein
• a top-surface-groove die is formed on a surface of the first roll, the top-surface-groove die being configured to form a top-surface groove in a predetermined area of the intermediate continuum, the top-surface groove being depressed from the topsheet, a back surface groove die, and a plurality of back-surface-groove bump portions are formed on a surface of the second roll in an area including a region facing the top-surface-groove die, the back-surface-groove bump portions being configured to form a back surface groove depressed toward the topsheet in an area of the intermediate continuum on a side having the liquid impermeable sheet, the area corresponding to the top-surface groove.