Method for forming perforations in bar-shaped articles

Details Method for forming perforations in bar-shaped articles Method for forming perforations in bar-shaped articles

1985-11-29

1987-03-03

Albritton, C. L.

Electric heating

Metal heating

By arc

219121LK, 219121FS, B23K 2600

Patent

active

046477527

ABSTRACT:
A method by which bar-shaped articles, in particular cigarettes, are transferred transversely to their axis by three rollers, of which one is disposed in an intermediate position between the other two and is tangential to these latter at two separate points defining a perforation arc therebetween, and are advanced along said perforation arc supported by respective cradles which are rotated about their axes relative to said intermediate roller at a constant angular speed equal to a whole multiple of the angular speed of said intermediate roller; a pulsed laser beam rotatable about the axis of the intermediate roller being used to form at least one ring of perforations in each article during the time used by said article to traverse said perforation arc.

REFERENCES:
patent: 4565202 (1986-01-01), Seragnoli et al.

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