Method for forming elastic film stretchable structure and absorbent article

An absorbent article comprising

• an absorber that absorbs excrement, wherein:
• the absorbent article has an elastic film stretchable structure in which an elastic film is stacked between a first sheet layer and a second sheet layer and the first sheet layer and the second sheet layer are bonded via through-holes penetrating the elastic film at a plurality of sheet bonded portions arranged at intervals, and
• the elastic film stretchable structure has a portion in which an area rate of a subset of the plurality of sheet bonded portions changes in a direction orthogonal to a stretchable direction of the elastic film stretchable structure, and a difference between a maximum value and a minimum value in a change of the area rate of the subset of the plurality of sheet bonded portions in the direction orthogonal to the stretchable direction is 1.5% or less.

An absorbent article comprising

• an absorber that absorbs excrement, wherein:
• the absorbent article has an elastic film stretchable structure in which an elastic film is stacked between a first sheet layer and a second sheet layer and the first sheet layer and the second sheet layer are bonded via through-holes penetrating the elastic film at a plurality of sheet bonded portions arranged at intervals, and
• the elastic film stretchable structure has a portion in which an area rate of a subset of the plurality of sheet bonded portions changes in a stretchable direction of the elastic film stretchable structure and a direction orthogonal to the stretchable direction, a difference between a maximum value and a minimum value in a change of the area rate of the subset of the plurality of sheet bonded portions in the stretchable direction is 4.5% or less, and a difference between a maximum value and a minimum value in a change of the area rate of the subset of the plurality of sheet bonded portions in the direction orthogonal to the stretchable direction is 1.5% or less.