The step of applying an adhesive to the elastic member extending in the conveying direction, and the elastic member sandwiched between two continuous nonwoven fabrics having a pair of side edge portions extending in the conveying direction, and the adhesive applied to the elastic member And bonding a part of the intermediate portion between the pair of side edges so that the two continuous nonwoven fabrics overlap each other to form a continuous body, and the edge of the continuous body than the intermediate portion bonded with the adhesive And a step in which two continuous nonwoven fabrics are thermally welded to each other at a pair of side edges close to each other.搬送方向に延びる弾性部材に接着剤を塗布する工程と、搬送方向に延びる一対の側縁部を有する２枚の連続不織布の間に弾性部材を挟むと共に、弾性部材に塗布された接着剤を介して２枚の連続不織布が互いに重なるように一対の側縁部の間の中間部の一部において接着して連続体を生成する工程と、連続体における接着剤で接着された中間部よりも縁寄りの一対の側縁部において、２枚の連続不織布が互いに熱溶着される工程とを備える。
