355 nm UV laser marking mask and forehead thermometer

Since the outbreak of the epidemic, masks and forehead thermometers have become necessities of life at this stage. However, the large demand gap has made some unscrupulous traders take advantage of it, and a large number of inferior masks have flowed into the market. Fake masks not only have no protective effect, but also have the risk of contamination due to substandard production environment hygiene, which is more harmful to personal health. To identify real and fake masks, the direct way is to check the laser anti-counterfeiting marks.

First of all, the pharmaceutical and medical industries attach great importance to safety and hygiene, so the requirements for product marking are very high, and information such as production date, instructions for use and other information must be permanent, so we will choose laser marking machine as the processing mark, and Non-jet printer, silk screen printing and other traditional methods.

The forehead temperature gun usually prints the LOGO on the plastic shell. The effect of laser engraving by the UV laser marking machine has no feel, and the font will not turn yellow due to burning, which can reflect the grade of the brand, and the price of the UV laser marking machine Compared with the fiber laser marking machine, it is higher, so it can reduce the probability of being counterfeited and play an anti-counterfeiting role.

For boxed 3M N95/KN95 series masks, it can be identified by the anti-counterfeiting label on the mask box. The labels of real masks will change color from different angles, while the labels of fake masks will not change color. For bulk 3M N95/KN95 series masks, the authenticity can be identified by observing the fonts on the masks. The real 3M mask text is marked by laser, and the font has twill, while the fake is printed by ink and has dots (traces of uneven ink).

Why laser: the characteristics and application advantages of laser marking anti-counterfeiting

The basic principle of laser marking is to use a laser beam with high energy density to act on the surface of the material, to instantly vaporize or change the color of the surface material by focusing, and to form the required permanent image by controlling the path of the laser on the surface of the material. Text mark. Since laser marking can print various characters, symbols and patterns, the size of the characters can be from millimeters to microns, 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 marking on packaging was usually printed with ink. The marks printed by this traditional method tend to peel off over time, become blurred, easily tampered with, and cannot be processed with high precision. Although it has advantages in equipment cost, consumables (ink) continue to cost more and cause some pollution to the environment.

Taking common food packaging as an example, because the marks printed by traditional methods are easy to erase and fall off, some criminals will print some expired or even counterfeit products with brand trademarks, or modify the production date, so that these substandard products can be circulated. in the city. Such phenomena are common in the fields of grain and oil, beverages, snacks, sauces and so on. In addition, for some paper food packaging, the harmful substances of ink may 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 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 permanent shedding. In addition, laser marking can also be combined with computer technology. By linking to the database system, we can track and inquire about the detailed information of the factory and circulation of food in time to ensure that we can eat with confidence.

The medical industry is inseparable from the escort of laser marking. Since medical products are in direct contact with the human body, it is related to the life and health of the people, so the prevention of counterfeiting and anti-counterfeiting of medical products has become the top priority of protecting the health and safety of consumers.

In addition to some of the features mentioned above, the marking of medical devices and pharmaceuticals has some special requirements. For example, for common pills and soft capsules, if lithographic printing is used, the product will be stressed, while non-contact laser marking will not deform the capsule, and can mark smaller information on tiny pills. On medical devices such as stainless steel surgical and dental equipment, the laser can mark absolutely smooth surfaces, which prevents bacteria from adhering to the surface, and the marked surface does not damage the corrosion-resistant chemical passivation treatment , allowing the anti-corrosion coating to persist even after years of use and countless cleanings and sterilizations. Another example is the 3M mask mentioned at the beginning, whether there is a laser mark is an important sign to distinguish the authenticity.