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What kind of laser marking machine is good for marking plastic parts?

Plastic is an important product material. Marks, barcodes and numbers on plastic products are used for identification. Generally, the surface is usually directly processed, such as stamping, engraving, punching, or printing, and external processing methods such as labeling, hot stamping and shrink packaging. The use of a Laser marking machine to print marks on the surface of plastic products is a method with fast processing speed, which can maintain the inherent surface characteristics of plastic products, and the printed mark has the characteristics of long-lasting, anti-counterfeiting and high quality, no need other processing.

Laser marking machines are classified into UV laser marking machines, fiber laser marking machines and co2 laser marking machines according to their lasers.

Fiber laser marking machine uses laser beams to print permanent mark on the surfaces of various different materials. The effect of marking is to expose deep substances by evaporation of surface substances, or by "light energy" to cause physical changes of the surface material to "engrave" marks. Fiber lasers are used to produce lasers with good beam quality, The marked text and patterns on plastic parts are beautiful and permanent.

The UV laser marking machine is developed by using 355nm ultraviolet laser. The machine uses third-order intracavity doubling frequency technology compared with infrared laser. The 355nm UV laser focusing spot is extremely small, which can greatly reduce the mechanical deformation of the material, the processing has small heat impact, is mainly used for ultra-fine marking and engraving. It can also be used to mark on plastic parts. The marked text pattern information is finer than that marked by fiber laser marking machine.

The co2 laser marking machine is a laser galvanometer marking machine that uses CO2 gas as a working medium. CO2 laser uses CO2 gas as medium, CO2 and other auxiliary gases are charged into the discharge tube, after high voltage is added to the electrodes, the glow discharge is generated in the discharge tube, so that the gas emits a laser with wavelength of 10.64um. And the laser energy is amplified, scanned by the galvanometer and focused by F-Theta lens, under the control of the computer and laser marking control card, the image, text, numbers and lines can be marked on the workpiece according to the user's requirements. The marking is mainly on wood, leather, paper packaging and label paper, marking on plastic products will burn the product to a large extent, so co2 laser is not suitable for engraving on plastic products.

The laser marking machine produced by Shenzhen Sun Laser can be widely used in electronic separation components, integrated circuits (IC), electrical circuits, mobile communication, precision instruments, glasses and clocks, computer keyboards, jewelry, hardware, kitchen utensils tool, tool accessories, auto parts, plastic buttons, plumbing fittings, PVC pipes, medical equipment, packaging bottles, sanitary ware and other products. The laser beam quality is good, the mark is clear and beautiful, permanent and pollution-free.

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