Jul 28, 2020
Since the outbreak of the COVID-19 epidemic, masks have become a daily necessity. However, the huge demand gap has caused some illegal traders to take advantage of the situation, and a large number of low-quality masks flow into the market. Fake masks not only have no protective effect, but also have the risk of contamination due to poor production environment hygiene, which is extremely harmful to personal health. The most direct way to identify genuine and fake masks is to check the laser anti-counterfeiting marks.
For boxed 3M N95/KN95 series masks, it can be identified by the anti-counterfeiting label on the mask box. The label of the real mask will change color from different angles, while the label of the fake mask will not change color. For bulk 3M N95/KN95 series masks, the authenticity can be distinguished by observing the font on the mask. The real 3M mask text is marked by laser with diagonal lines, while the fake is printed by ink with dots (marks of uneven ink).
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 traceability in the fields of food, medicine, tobacco, beauty cosmetics, and electronic products.
Before the large-scale application of laser marking, the marking on the package was usually printed with ink. Take the most common food packaging as an example. Because the marks printed by traditional methods are easy to erase and fall off, some lawbreakers print some expired or even fake products with brand trademarks, or modify the production date to make these unqualified products Circulate in the city. This kind of phenomenon is widespread in grain and oil, beverages, snacks, sauces and other fields. In addition, for some paper food packaging, harmful substances in ink may also penetrate the packaging and contaminate the food, posing a threat to the health of consumers.
The emergence of laser technology has solved a series of problems caused 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, the laser can also be combined with a computer, and by connecting to a database system, people can track and inquire detailed information of food delivery and circulation in time to ensure that they can eat at ease.
The medical industry is inseparable from the escort of laser marking. Since medical products are in direct contact with the human body and are related to the lives and health of the people, the anti-counterfeiting of medical products has become the top priority of protecting the health and safety of consumers.
There are some special requirements for the marking of medical devices and drugs. For example, for common pills and soft capsules, lithographic printing will produce pressure on the product, and non-contact laser marking will not deform the capsule, and can mark even more minute information on tiny pills. On the medical equipment represented by stainless steel surgery and dental equipment, the laser can mark on an absolutely smooth surface, which can prevent bacteria from sticking to the surface, and the marked surface will not damage the corrosion-resistant chemical passivation treatment , Can make the anti-corrosion coating exist even after years of use and countless times of cleaning and disinfection. Another example is the 3M mask mentioned at the beginning. Whether there is a laser mark is an important sign to distinguish authenticity.