The present invention provides a method includes the steps of: conveying in a conveyance direction MD a second web 7B in which components forming one part of an absorbent article 1 are sequentially arranged swinging an elastic member 6 in a cross direction CD at a predetermined cycle by using a swing guide mechanism 120 for guiding the elastic member 6 and pressing, between one pair of press rollers, the second web 7B on which the elastic member 6 is arranged. The swing guide mechanism 120 has a motor 210 with a rotational shaft 211, an arm member 220 for guiding the elastic member 6 to a predetermined position on the second web 7B in the cross direction CD, and a speed reducer 230 provided between the rotational shaft 211 and a base 221 of the arm member 220 to make a rotational speed (V 3 ) of the arm member 210 slower than a rotational speed (V 2 ) of the rotational shaft 211.
