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Microla, constantly engaged in the study and optimization of technologically advanced solutions for product traceability and safety, has recently focused its attention towards the realization of holograms through laser technology.
An hologram allows to create an identification mark readily recognizable even by unskillful people, but, at the same time, difficult and sophisticated to be reproduced with traditional techniques such as printing or scanning. A typical example of application is the hologram obtained by white light reflection that appears onto the notes; this kind of holograms is usually made through embossing of metal coated plastic films and it is therefore necessary to fabricate a proper holographic master.
Nowadays the main technology used for fabricating holographic masters is the optical lithography. This technique allows to reach high resolutions, but its high costs and the time required by the process make interesting the exploration of alternative processes. The use of a laser beam for material processing allows to have similar spatial resolutions of the gratings, but the process duration is remarkably lower and the versatility of the system is much higher. A further possibility offered by laser technology is the direct marking of the holograms on the final product. Microla’s interest towards this vanguard solution has been confirmed by its cooperation with companies operating in this sector.
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