A method including: placing at least one elastic member stretchable in the carrying direction so that at least one elastic member extends in base portions of each continuous portion located at the same positions in the carrying direction as protruding portions or in the protruding portions and intermittently folding the divided non-woven fabrics so that the elastic member is sandwiched between the base portions and the protruding portions and so that layered portions are formed, each layered portion including a protruding portion laid on a base portion adjacent to the protruding portion.
