Device for perforating rod-shaped articles, particularly in the tobacco-processing industry
AssigneeHauni Maschinenbau AG
InventorHelmut Voss
Life of this patent
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Abstract
A device and a method for producing zones of desired air permeability in the enveloping material of rod-shaped articles, particularly in the tobacco-processing industry. The device comprises a beam-guiding device for focusing an energy-rich beam, generated by a radiation source, onto the enveloping material in order to form perforation zones, as well as a multiple beam-generating device that generates a multiple beam from the single beam. The multiple beam-generating device is provided with at least one optical element that is fixed in its operating position relative to the beam.
Claims32
A device for producing zones of desired air permeability in the enveloping material of rod-shaped articles, comprising:
- a beam-guiding device for focusing a multiple beam generated from a single energy-rich beam originating from a radiation source onto the enveloping material in order to create perforation zones;
- and
- a multiple beam-generating device located for creating a multiple beam from the single energy-rich beam, the multiple beam-generating device comprising at least one optical element that is fixed relative to the single energy-rich beam in an operating position of the optical element.
A method for producing zones of desired air permeability in enveloping material of rod-shaped articles, in particular in the tobacco-processing industry, comprising:
- generating a single, energy-rich beam by a radiation source;
- generating a multiple beam from the single beam by fanning out the single beam in a diffractive optical element into an even number of partial beams diverging at an angle to each other in order to form the multiple beam;
- and
- focussing the partial beams onto the enveloping material in order to form the perforation zones.
A beam divider, comprising:
- a beam dividing optical component in which a beam incident on said component is partially reflected as a first partial beam and partially transmitted as a second partial beam, wherein the said component includes means for forming each of the first and second partial beams as a multiple partial beam.
Dependencies are inferred from the claim text.