Included is a tip end portion 222 being a feeding position from which a filiform elastic member 6a is fed. By an arm member 220 guiding the elastic member 6a, the tip end portion 222 is alternately moved in a first direction Da and a second direction Db, and thereby the elastic member 6a is brought into contact with the web and is arranged in a gather waveform. Here, the first direction Da is from the center portion of a web being conveyed in a predetermined direction and having sequentially-arranged component parts forming one part of an absorbent article, to a first end portion 7a in a cross direction CD crossing with a conveyance direction MD, and the second direction Db is from the center to a second end portion 7b which is an end portion opposite to the first end portion 7a. At this time, in a planar view of a composite web 7, when a nip point exceeds a position where an angle between the conveyance direction MD and a tangent to the gather waveform is largest, a distance between the tip end portion 222 and the nip point is largest.
