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Laser Marking and Engraving of Watches and Jewelry
Sapphire glass for premium watches
Glass for premium watches, with detailed, security-relevant labels. The glass is very hard and consequently, conventional processes cannot be used to produce long-lasting inscriptions. Furthermore, these conventional processes also lead to a risk of microscopic ruptures (micro cracks). Crack-free engravings can only be applied into the glass surface with the help of special lasers.
Glass engraving represents an elaborate security feature that cannot be imitated with normal glass, that is used to make watches, and other processes.
UV-laser marking on glass
UV-laser marking is especially appropriate for sensitive materials like silicone, because surface structures are only slightly affected. At the same time, its short wavelengths enable excellent marking results. Even for microtext (text height under 0.1 mm) a UV-laser can attain a line width of under 10 µm.
On glass, a UV-laser can also provide filigree and brilliant marks of high quality. Drinking glasses or crystal watches keep their smooth surfaces, as a UV-laser produces micro cracks of much smaller dimensions as compared to for example a CO2-laser.