Application of 355nm UV Laser Marking Machine
Sep 17 , 2021
Ultraviolet laser marking machines or solid-state ultraviolet lasers are divided into xenon lamp pumped ultraviolet lasers, krypton lamp pumped ultraviolet lasers, and new laser diode pumped all-solid-state lasers according to the pumping method. Due to the large energy of ultraviolet photons, it is difficult to generate a certain high-power continuous ultraviolet laser through an external excitation source. Therefore, the realization of ultraviolet continuous wave laser is generally generated by the nonlinear effect of crystal materials. The shortest wavelength is 370nm, which can be operated continuously at 348nm wavelength and pulsed at 343nm wavelength. It is usually called 355nm laser. The laser cavity design, acousto-optic Q-switching technology, and high-precision cooling system that the common domestic ultraviolet lasers basically use are suitable for various laser application requirements. This series of lasers is mainly used for fine processing and engraving, and is especially suitable for marking and micro-hole drilling of food and medical packaging materials, high-speed division of glass materials, and complex pattern processing and cutting of silicon wafers. It has a wide range of uses in military, processing, medical and scientific research fields. It is commonly used in ranging, tracking, guidance, punching, cutting and welding, semiconductor material annealing, electronic device micromachining, atmospheric detection, spectroscopy research, surgery and ophthalmic surgery, plasma diagnosis, pulse holography, laser nuclear fusion, etc. . Solid-state lasers are also used as excitation sources for tunable dye lasers.
The UV laser marking machine currently used in product laser marking has the characteristics of high efficiency, high repetition frequency, reliable performance, small size, good beam quality and stable power. The UV laser marking machine is the new favorite in the field of laser marking for the application of non-metallic materials. It makes up for some early products that cannot be processed by laser. Even if they are processed, the accuracy is not high, and the marking process cannot meet product needs. The industrial application of ultraviolet lasers, especially the low-power application market, has become more and more widespread. Most food manufacturers have introduced ultraviolet equipment to replace the early ink jet printers, because the first solution for food companies is environmental protection, pollution-free, and free Maintenance and high efficiency.
Application of UV laser equipment in the food industry
Food, the first thing the public think of is clean and hygienic. The internal environment of the edible product production workshop should not have pollution sources. However, the traditional inkjet printing is the source of pollution only from the ink material, and the inkjet printing machine will inevitably add active diluents. Dilution, active diluents include acetone, methyl ethyl ketone, cyclohexanone, benzene, toluene, xylene, n-butanol, styrene, etc. Long-term exposure will affect health and cause certain pollution to the environment. Therefore, the application of laser marking machine solves the problem of these pollution sources. Especially for ultraviolet lasers, the focusing spot of ultraviolet lasers is extremely small, which can greatly reduce the mechanical deformation of materials and affect product quality due to processing thermal effects, because it is mainly used for ultra-fine marking, and is especially suitable for food packaging and medical packaging materials. Demand for laser marking. Moreover, because the ordinary plastic packaging film will be uneven during the production process, the UV laser can also print clear content at will in the non-focal plane, and it is not easy to produce defective products. The corporate image is improved, and consumers no longer worry about the code falling off or unclear, and can clearly understand the production information of the purchased product. The UV laser emits light quickly, which also greatly improves the production efficiency of the assembly line. The coding speed of ordinary plastic film can reach 300 meters per minute for single line characters, 200 meters per minute for double lines, and 600 bottles per minute for double line characters on beverage production lines. , The coding speed of the two-dimensional code assembly line can also reach 80 meters per minute. This production speed can basically meet the production needs of most companies. The current application products include: milk product packaging (yogurt cups, flexible packaging milk products, yogurt bottle caps), cosmetic packaging (glass jars, plastic caps, plastic bottles), daily necessities product packaging (laundry liquid, hand sanitizer, disinfectant), noodles Packaging, quick-frozen product packaging, ice cream packaging, soy product packaging, translucent disposable packaging boxes, etc.
Application of UV equipment in electronic products
The information of electronic products must be accurate, clearly recognizable, and permanent. However, for many materials, if ordinary laser equipment cannot meet the process requirements, UV laser marking machines can be considered if the budget allows. The characteristic of the ultraviolet equipment is that the light spot is fine, and the writing of the processed workpiece is clearer, which can meet the external identification processing of the plastic shell of most electronic products. Ultraviolet laser coding machine can process products: circuit diagrams of circuit boards, computer keyboard keys, car keys, mobile phone shells, mobile phone chargers, adapters, plastic shells for home appliances, USB shields for banks, etc.
Application of UV laser equipment in the glass industry
Glass is formed by melting silicon dioxide and other chemical substances (the main raw materials for production are: soda ash, limestone, and quartz). A continuous network structure is formed during melting, and the viscosity gradually increases and hardens to crystallize the non-metallic silicate material during the cooling process. As a synthetic material, it exudes a tranquil and pure taste, showing the beauty of form and reality, the beauty of light and shadow, the beauty of imagery, the beauty of time and space, and the beauty of interest. Glass is beautiful, but it does not fall short. Therefore, each designer uses various tools to paint on the glass to add color to the glass products. Ultraviolet laser marking machine surpasses traditional processing and makes up for various deficiencies in the past, such as low processing accuracy, difficult drawing, damage to the workpiece, and environmental pollution. With its unique processing advantages, it has become the new favorite of glass product processing, and is used by various wine glasses, craft gifts, etc. The industry is listed as a necessary processing tool. Different national languages, font styles, patterns, and laser marking technology are all handy, adding diversified choices to the field of laser customization. Because the laser marking process is combined with the numerical control system, after drawing on the computer, the UV laser marking machine can mark the words or patterns you want to say on the product, showing inadvertent romance. Moreover, most of the glass test tubes have also been marked with UV laser processing technology, especially test tubes. In order to ensure the preparation of scientific research data, the test tubes with extremely high calibration requirements are all marked with UV laser marking machines.
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Processing advantages of UV laser equipment
1. The ultraviolet laser marking machine is equipped with imported violet laser, which has excellent performance, uniform laser power density, fine spot, and stable output light power;
2. Modular design of UV laser marking machine, flexible application, equipped with automatic/manual working mode;
3. The ultraviolet laser marking machine is suitable for a wide range of materials, which makes up for the lack of infrared laser processing capabilities and can achieve ultra-fine laser marking;
4. Ultraviolet laser marking machine has a small heat-affected zone, avoiding damage from processed materials, and high yield;
5. The UV laser marking machine does not require consumables, and the use and maintenance costs are low.
