Patent ID: 8591682

Claim:
A manufacturing method for a composite sheet associated with an absorbent article, in which a continuous body of an elastic member is in a stretched state and is bonded with a continuous body of a sheet, comprising: conveying the continuous body of the sheet continuously in a conveying direction; and bonding the continuous body of the elastic member with the continuous body of the sheet while a position on the continuous body of the sheet at which the continuous body of the elastic member bonds with the continuous body of the sheet is changing continuously in an intersecting direction by transporting the continuous body of the elastic member towards the continuous body of the sheet with a guiding member, the intersecting direction being a direction that intersects the conveying direction, the guiding member moving back and forth in the intersecting direction, the continuous body of the sheet being traveling in the conveying direction, wherein the guiding member includes a drive roller that, while being contact with the continuous body of the elastic member, is driven and rotated along a transporting direction of the continuous body the elastic member, and by changing a rotation speed of the drive roller, a stretching ratio of the continuous body of the elastic member is adjusted, wherein the drive roller is a member that is located farthest downstream in the transporting direction, among members that come into contact with the continuous body of the elastic member on a path prior to the bonding of the continuous body of the elastic member with the continuous body of the sheet, wherein the guiding member includes an oscillating arm that oscillates about a predetermined axis in the intersecting direction, the drive roller is disposed on an oscillating end of the oscillating arm, a second roller is disposed on the oscillating arm at a position closer to the axis than the drive roller is, the continuous body of the elastic member fed into the second roller is transported to the drive roller, the drive roller is driven and rotated by a drive mechanism, and the drive mechanism includes, a drive pulley that is disposed so as to rotate about a same axis as the drive roller in an integrated manner with the drive roller, a relay pulley that is arranged on the oscillating arm at a position closer to the axis than the drive pulley is, an endless belt that is wrapped around the drive pulley and the relay pulley, and a second drive mechanism that drives and rotates the relay pulley.