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Several Ways of Laser Marking on Glass

Mar 15, 2020

Glass products are widely used in construction, daily use, medical treatment, chemistry, home furnishing, electronics, instruments, nuclear engineering, and other fields. Glass is fragile, so carving on the surface of glass products requires high technology. The laser marking machine is non-contact processing, with short processing time and fine marking lines, which is very suitable for marking patterns or text messages on the surface of glass materials. Use the laser to mark the glass in the following ways.

Multiple laser radiation method

Single laser radiation was used to generate a marked contour mark on the glass surface. After a few days, the laser was extended to the vicinity of the original mark to form fragments, and then multiple irradiations were used to heat the area adjacent to the marked area through the heat conduction to form these areas Stress gradients reduce the possibility of secondary cracking. This method is very effective for marking on soda-lime glass and borosilicate glass. Small glass bottles containing liquid medicaments and glasses in daily life can be marked using this method.

Discrete point formation ring crack method

Use a series of circular cracks to form text, barcode, square or rectangular codes, and other shape code patterns. This method generally uses more CO2 laser marking machines, and the CO2 laser marking machine sets a parameter for marking and marking on the glass and generates fewer cracks. Discrete points appear to form annular cracks. The glass undergoes low-density ring cracks through heating and cooling cycles. When the glass is heated, it expands and squeezes the surrounding materials. When the temperature rises to the softening point of the glass, the glass rapidly expands to form a dome of the low-density material protruding from the glass surface.

By using the CO2 laser marking machine, we can mark exquisite patterns on the surface of the glass to improve the quality of glass.

The method of producing crazing surface crack

The process of heating and cooling is used to change the surface of the affected glass. This method is not immediately visible, but only after a little pressure is applied, the tortoise shaped cracks begin to appear along the laser marked area. The cracked surface glass not only has the characteristics of safety glass but also has the effect of ice crack and non-full transparency. Therefore, it is widely used in interior decoration, such as partition, background wall, and glass furniture, which is deeply loved by consumers.

Laser on-line marking machine for glass marking

The laser can form a very fine beam of light to achieve fine marking on the glass material. Any complex text, graphics, image, trademark, logo, barcode, QR code, production batch number, autograph, and so on can be completed by the laser marking machine.


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