METOD OCH SYSTEM FOER LASERPERFORERING AV SKIVMATERIAL

In the perforation of sheet material eg: cigarette filter paper by light energy, a continuous focused laser beam 38 is reflected from different locations along the beam axis to provide separate pulsed beams 52a, 54a and the beams are issued onto the sheet material with the same beam cross- sectional...

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Bibliographic Details
Main Authors CLAFLIN WARREN E, MARTIN PETER, LILLY JR A CLIFTON, BROOKS ULYSSES A, STULTZ EDWARD B
Format Patent
LanguageFinnish
Published 11.02.1980
Edition3
Subjects
CIGARETTES
CIGARS
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
HUMAN NECESSITIES
MACHINE TOOLS
MACHINES FOR MAKING CIGARS OR CIGARETTES
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SMOKERS' REQUISITES
SOLDERING OR UNSOLDERING
TOBACCO
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:In the perforation of sheet material eg: cigarette filter paper by light energy, a continuous focused laser beam 38 is reflected from different locations along the beam axis to provide separate pulsed beams 52a, 54a and the beams are issued onto the sheet material with the same beam cross- sectional area. The lengths of respective different light paths 42, 44 for conveyance of light from the point of focus of the laser to final image locations are made equal and different focusing elements may be included in light paths to provide for sameness of beam cross-sectional area at the final image locations. The light paths are preferably provided in part by light conducting apparatus having light- reflective elements mounted for movement, such that different perforation matrices may be readily attained.
Bibliography:Application Number: FI19790002368