METHOD AND DEVICE FOR STRUCTURING A SOLID BODY SURFACE WITH A HARD COATING WITH A FIRST LASER WITH PULSES IN THE NANOSECOND FIELD AND A SECOND LASER WITH PULSES IN THE PICO- OR FEMTOSECOND FIELD ; PACKAGING FOIL

In the method for structuring at least one area of a solid body surface provided with a ta-C coating, by means of a first laser, preferably an excimer laser having pulse durations in the nanosecond range, a first structure is produced upon which a second, ripple-like structure is superposed by means...

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Bibliographische Detailangaben
Hauptverfasser:	REISSE, GÜNTER, WEISSMANTEL, STEFFEN, ENGEL, ANDY, BOETTCHER, RENE, STEFFEN, WERNER, BOEGLI, CHARLES
Format:	Patent
Sprache:	eng ; pol
Schlagworte:	BOOK COVERS BOOKBINDING CLADDING OR PLATING BY SOLDERING OR WELDING COLOUR PRINTING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES LINING MACHINES LOOSE LEAVES MACHINE TOOLS MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD ORMATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER METAL-WORKING NOT OTHERWISE PROVIDED FOR MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES PUNCHING METAL SOLDERING OR UNSOLDERING SPECIAL PRINTED MATTER STAMPS TRANSPORTING TYPEWRITERS WELDING WORKING BY LASER BEAM WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER
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Beschreibung
Zusammenfassung:	In the method for structuring at least one area of a solid body surface provided with a ta-C coating, by means of a first laser, preferably an excimer laser having pulse durations in the nanosecond range, a first structure is produced upon which a second, ripple-like structure is superposed by means of a second laser, preferably having pulse durations in the femtosecond range. Preferentially, the excimer laser structuring is carried out according to the mask projection technique and the femtosecond laser structuring according to the focus technique. This method allows the rational manufacture of very complex, extremely fraud-resistant authentication features and/or of esthetically attractive, optical diffraction effective colored patterns.