Method and apparatus for breaking film perforations

Details Method and apparatus for breaking film perforations Method and apparatus for breaking film perforations

1993-11-12

1995-06-27

Seidel, Richard K.

Severing by tearing or breaking

Methods

Transversely of continuously fed work

225100, B65H 3510

Patent

active

054272947

ABSTRACT:
A method for breaking film perforations between a plurality of adjacent films employs an in-feed device, an out-feed device, and a festooner positioned between the in-feed device and the out-feed device. The in-feed device and the out-feed device move the plurality of adjacent films downstream through the festooner, which includes a plurality of rollers extending from a rotatable hub shaft. To perform the method, the hub shaft is first rotated to a home position. Next, a first film is fed through the festooner and into the out-feed device using the in-feed device. The out-feed device moves film downstream at a slower speed than the in-feed device. The hub shaft is then rotated at a high boost speed so that the rollers take up slack in the first film generated by the slower speed of the out-feed device relative to the in-feed device. Finally, while the perforations between the first film and an upstream adjacent second film are located between the in-feed device and the festooner, the hub shaft is rotated at a slow speed relative to the high boost speed so as to controllably break the perforations.

REFERENCES:
patent: 2523183 (1950-09-01), Beall
patent: 2685417 (1954-08-01), Bartelson
patent: 3163341 (1964-12-01), Fisher et al.
patent: 4025023 (1977-05-01), Moffitt
patent: 4515321 (1985-05-01), Kahlman
patent: 5156241 (1992-10-01), Sugie et al.

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