Laser anti-counterfeiting holographic anti-counterfeiting technology includes 8 technologies: 1. Conventional holographic anti-counterfeiting technology, 2. Multi-channel holographic anti-counterfeiting technology, 3. Invisible encryption technology, 4.360° computer dot matrix holographic technology, 5. Double Layer holographic technology, 6. Fluorescent encryption holographic technology, 7. Dynamic coding anti-counterfeiting technology, 8. Telephone code anti-counterfeiting technology, nuclear micropore anti-counterfeiting technology and genetic anti-counterfeiting technology, and have clear images, brilliant colors, strong three-dimensional effect, and one-time use characteristics. When the multi-channel holographic anti-counterfeiting logo is rotated, you will see different patterns appearing at the same position of the logo. Invisible encryption technology creates an encryption pattern at any position of the logo, and the encryption pattern can be seen under the laser reproducer. The 360° computer dot matrix holography technology will produce a combination and transformation of radial, circular, spiral and other light points within the 360° observation range of the image, which is extremely dynamic. The double-layer holographic technology can reveal the holographic logo, and you can also see the second anti-counterfeiting layer printed with patterns and text, which has a double insurance anti-counterfeiting effect. The principle of fluorescence encryption holographic technology is the same as that of RMB fluorescence encryption. Dynamic coding anti-counterfeiting is to place the trademark in front of your eyes, and slowly rotate the trademark to produce a pattern of continuous movements. The telephone code anti-counterfeiting mark is made by combining laser anti-counterfeiting technology and telephone code anti-counterfeiting technology. The authenticity can be verified by querying the unified central database. The nuclear micropore anti-counterfeiting mark is composed of laser anti-counterfeiting technology and nuclear micropore anti-counterfeiting technology. Authenticity can be distinguished with just a pen. Genetic anti-counterfeiting is to add genetic factors to the logo backing glue and detect it through special instruments.
The most commonly used anti-counterfeiting technology is laser rainbow molded holographic graphics and text, which is a kind of visual graphic information produced on products by applying laser rainbow hologram plate making technology and molding replication technology.
Rainbow holographic images are rainbow holographic photos that use universal holographic images as the shooting object and are processed through a series of procedures. For example, a photosensitive film of photoresist is used to replace the hologram taken by ordinary photos. After exposure processing, a relief phase hologram is obtained, which is the master for making a rainbow hologram. The surface of the master plate is filled with uneven interference fringes, the fineness of which can reach more than a thousand per millimeter. These relief-like stripes record the light wave intensity and phase information of the photographed object, achieving holographic recording. Then use vacuum coating or chemical plating method to plate a very thin metal film on the surface of the master plate, and then plate it with nickel or other metals of appropriate thickness to make a molded metal plate with good mechanical properties. Install this board on a printing machine, hot-press the polyester plastic film, and imprint the relief hologram on the film. Finally, a layer of aluminum film is vacuum evaporated on the film to increase the reflectivity of the film. After the aluminum film is plated or coated with a protective layer, a holographic image is made, that is, an opaque laser-molded holographic anti-counterfeiting image. This kind of hologram can be observed by sunlight. Each wavelength of light in the sunlight will be diffracted by the interference fringes on the picture. Because of the different diffraction angles, the reproduced image will have different colors when viewed at different angles.
Since the combination of color blocks in the hologram is randomly encoded, it is difficult to produce exactly the same holographic master even with the same device, so rainbow holographic images have been widely used to make anti-counterfeiting signs. The hologram can also be directly transferred to paper products, and is now widely used in tickets, trademarks and credit cards.
The colors of molded holographic anti-counterfeiting signs include single rainbow, multiple rainbow colors, true color and black and white (achromatic), and its images include two-dimensional, three-dimensional, multiple and dynamic imaging.
Due to the different hologram imaging technologies of laser molded holographic anti-counterfeiting marks, they can be divided into classic, pulsed three-dimensional laser molded holographic anti-counterfeiting marks, synthetic molding, multi-image laser molding, dynamic molding, dynamic grating molding, and invisible Holographic anti-counterfeiting marks such as holographic molding and anti-counterfeiting ink encrypted laser molding.
The advent of hot stamping holograms and transmission holograms are innovations based on ordinary rainbow holograms. Among them, the semi-transparent hologram is made by making the aluminum layer on the polyester film into a dot shape and controlling the dot density. Under reproduced light, the metal dots have light reflection, and the non-metal dots form light transmission and adjust The ratio of transmission and reflection allows the image and text covered under the image to be seen through the hologram, so it is also called a perspective hologram.
With the development of anti-counterfeiting technology, color holograms, synthetic holograms, cryptographic holograms (the information in the picture can be read with a laser pointer), etc. have followed.
These new packaging materials with anti-counterfeiting functions after being processed by laser holographic technology and higher-tech holographic image marking technology have better anti-counterfeiting functions.
Using holographic printing technology to make anti-counterfeiting marks and attaching them to the surface of packaging is currently the most popular anti-counterfeiting method. Holographic images have high technical content because they combine the latest achievements in lasers, precision machinery, physical chemistry and other disciplines. For most small-volume counterfeiters, it is difficult to master a full set of manufacturing technology and purchase manufacturing equipment, so the effect of this technology is significant.