Method and apparatus for manufacturing a composite sheet

An apparatus for manufacturing a stretchable composite sheet, by setting a plurality of nip areas arranged along a transport direction of a first continuous sheet, the first continuous sheet being transported while being sandwiched between rotating rolls in the nip areas, and by passing through the nip areas, as the first continuous sheet, a sheet in which stretchability is developed in the transport direction by being extended in the transport direction, comprising:

• rolls that form a first nip area;
• rolls that form a second nip area;
• and rolls that form a third nip area,
• the first continuous sheet being extended in the transport direction while being transported from the first nip area to the second nip area, the first continuous sheet being either a sheet in which stretchability has already been developed or a sheet in which stretchability has yet to be developed,
• an opening being formed intermittently in the transport direction in the first continuous sheet, while the first continuous sheet is being transported from the second nip area to the third nip area, the first continuous sheet in a state of having been extended,
• a second continuous sheet having a lower stretchability than the first continuous sheet being adhered in an overlapping manner to the first continuous sheet, in the third nip area.