The present invention provides a web splicing method and a web splicing apparatus
with which a line velocity on an output side of the splicing apparatus does not
fluctuate through a web splicing operation. The method and apparatus are further
operable to maintain a line velocity at a predetermined velocity after the web
splicing operation. The method of the present invention includes the steps of:
connecting a second web Wb fed out from a second roll B to a first web Wa; cutting
off the first web Wa at a position between a point at which the second web Wb is
connected to the first web Wa and a first roll A; spinning the second roll B to
feed out the second web Wb; obtaining a value of a diameter of the second roll
B based on a state of an accumulator 4; and controlling a circumferential
velocity of the second roll B based on the obtained diameter.
