Patent ID: 8512496

Claim:
An elastic member guide device, for guiding continuously-fed elastic members in an expanded state into contact with one surface of a web being continuously fed such that the elastic members are provided to the one surface of the web at a varied interval in a web width direction, comprising: a drive shaft defining a first rotation center axis; a plurality of drive pulleys removably attached to said drive shaft so as to be coaxially aligned along the first rotation center axis; a follower shaft defining a second rotation center axis; a plurality of follower pulleys mounted on said follower shaft so as to be coaxially aligned along, the second rotation center axis; transmission belts that are respectively wrapped around the drive pulleys and are respectively wrapped around the follower pulleys; elastic member guides respectively fixed to said transmission belts for movement with said transmission belts, each of said elastic member guides being configured to allow one of the continuously-fed elastic members to pass therethrough to be provided to the one surface of the web; a guide rail, said elastic member guides being guided for reciprocation along said guide rail; and a driver portion that controls regular and reverse rotations of the drive shaft, wherein a feed amount difference in the web width direction is allowed to be set for each of the elastic member guides, by determining a pulley diameter ratio among the plurality of drive pulleys.