The basic principle of laser marking is to use the laser beam with high energy density to act on the surface of the material, to make the surface material vaporize or change color instantaneously by focusing, and to form the required permanent graphic and text marks by controlling the path of the laser on the surface of the material. Because laser marking can print all kinds of characters, symbols and patterns, and the size of characters can range from millimeters to micrometers, which has special significance for the anti-counterfeiting of products, so it is widely used in the anti-counterfeiting market.
Before the large-scale application of laser marking, the marks on the package were usually printed with ink. The marks printed by this traditional method are easy to fall off, blur, and be tampered with over time, and cannot be used for high-precision operation. Although it has advantages in equipment cost, the continuous cost of consumables (ink) is high and will cause certain pollution to the environment.
Taking the most common food packaging as an example, because the marks printed by traditional methods are easy to erase and fall off, some illegal elements will print some expired or even fake and inferior products with brand trademarks, or modify the production date, so that these unqualified products can be circulated in the market. This kind of phenomenon is common in grain and oil, beverages, snacks, soy sauce and other fields. In addition, for some paper food packaging, the harmful substances of ink may also penetrate the packaging and pollute the food, posing a threat to the health of consumers.
The emergence of laser technology has solved a series of problems brought by traditional ink printing. For food packaging, the use of laser marking has the advantages of non-toxic, non-polluting, high efficiency, high definition, exquisite patterns, and never falling off. In addition, laser marking can also be combined with computer technology. By linking the database system, we can track and query the detailed information of food delivery and circulation in time to ensure that we can eat at ease.
And the medical industry is inseparable from the escort of laser marking. As the direct contact between medical products and human body is related to the life and health of the people, the treatment of fake and anti-counterfeit medical products has become the top priority to protect the health and safety of consumers.
In fact, laser marking anti-counterfeiting technology can not only be used to identify the authenticity of masks, but also play a huge role in packaging anti-counterfeiting and tracing in the fields of food, medicine, tobacco, cosmetics, electronic products, etc. It can be said that laser marking anti-counterfeiting has been integrated into all aspects of our life.
