A composite sheet is configured such that: an elastic member continuous in a transport direction while being stretched in the transport direction is disposed between a first continuous sheet that is continuous in the transport direction and a second continuous sheet that is continuous in the transport direction； and the elastic member is affixed in a region corresponding to at least a high stretch/shrink characteristic region. The elastic member is cut in a region corresponding to a low stretch/shrink characteristic region at one location in the transport direction. This allows the elastic member to shrink toward a region corresponding to the high stretch/shrink characteristic region, causing the high stretch/shrink characteristic region and the low stretch/shrink characteristic region to be formed and arranged side-by-side in the transport direction in the composite sheet. When, during the forming of the high and low stretch/shrink characteristic regions, the composite sheet passes in the transport direction between a rotating cutter body and a rotating anvil body that rotate with the outer peripheral surfaces thereof facing each other, a cutting edge on the outer peripheral surface of the rotating cutter body and the rotating anvil body grip and press the composite sheet while a gap is maintained between the rotating cutter body and the rotating anvil body, thereby cutting the elastic member while forming a pressed and bonded section where the first continuous sheet and the second continuous sheet are pressed and bonded together, the pressed and bonded section being formed at the position of the composite sheet at which the composite sheet is gripped and pressed.Une feuille composite est conçue de telle sorte que : un élément élastique continu dans une direction de transport tout en étant étiré dans la direction de transport est disposé entre une première feuille continue qui est continue dans la direction de transport et une seconde feuille continue qui est conti
