| US 7,513,858 B2 | ||
| Registration of intermittently moved fastener tape with continuously moving web | ||
| Clifton Ronald Howell, Buford, Ga. (US); and David C. Wallace, Lilburn, Ga. (US) | ||
| Assigned to Illinois Tool Works Inc., Glenview, Ill. (US) | ||
| Filed on Dec. 04, 2007, as Appl. No. 11/999,202. | ||
| Application 11/999202 is a division of application No. 11/702701, filed on Feb. 06, 2007, granted, now 7,303,518. | ||
| Application 11/702701 is a division of application No. 11/081368, filed on Mar. 16, 2005, granted, now 7,172,545. | ||
| Prior Publication US 2008/0125299 A1, May 29, 2008 | ||
| Int. Cl. B31B 1/90 (2006.01); B65B 61/18 (2006.01) | ||
| U.S. Cl. 493—213 [493/379; 493/381; 493/927; 53/412] | 15 Claims |
| 1. 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) deforming a respective section of said upstream portion of said fastener tape during each dwell time, each section having
a width substantially less than the length of each intermittent advance.
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