Patent ID: 7172545

Claim:
A method of manufacture comprising the following steps: (a) continuously advancing a web of bag making material at a first rate; (b) continuously joining portions of a downstream portion of a fastener tape to respective portions of said continuously advancing web of bag making material; (c) intermittently advancing an upstream portion of said fastener tape while said downstream portion is advancing continuously, the halt at the end of each intermittent advance being the start of the next work cycle, said upstream portion of said fastener tape being stationary during a respective dwell time of each work cycle and advancing during the remainder of each work cycle at a second rate faster than said first rate; (d) accumulating a portion of said fastener tape disposed between said upstream and downstream portions to compensate for the difference in said first and second rates during said remainder of each work cycle; and (e) inserting a respective slider onto said upstream portion of said fastener tape during each dwell time.