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The principle and application of intelligent anti-counterfeiting packaging printing technology

anti counterfeiting packaging

fake and inferior products can be said to be a cancer in the market, which not only greatly reduces the direct economic benefits of counterfeit enterprises, but also endangers the vital interests of consumers. With the development of science and technology, the sophistication and universality of forgery technology have put forward new requirements for anti-counterfeiting technology. Considering that anti-counterfeiting packaging has high technical content and the expansion of traditional packaging functions, it can be classified as "intelligent packaging"

the so-called "anti-counterfeiting packaging technology" is that it mainly targets commodities, which is not only the group of anti-counterfeiting part, but also a part of packaging technology. Therefore, anti-counterfeiting packaging not only has the general functional characteristics of anti-counterfeiting technology, but also has its own characteristics suitable for commodity packaging

at present, there are many anti-counterfeiting packaging means, and there are only more than 100 anti-counterfeiting marks. However, from the overall analysis, anti-counterfeiting packaging technology focuses on the following aspects: anti-counterfeiting marks; Special material technology; Printing process; Packaging structure and other methods. The following technical means are in the mainstream

(1) laser holographic image

using holographic printing technology to make anti-counterfeiting marks attached to the surface of packaging is the most popular anti-counterfeiting means at present. Holographic image has high technical content because it integrates the latest achievements of laser, precision machinery, physical chemistry and other disciplines. For most small batch counterfeiters, it is difficult to master a full set of manufacturing technology and purchase manufacturing equipment. Therefore, the effect of this technology is remarkable

however, the molded holographic anti-counterfeiting logo did not fully achieve its due function, and even forged signs appeared

followed by new packaging materials with anti-counterfeiting function processed by laser holographic technology and higher-level holographic image identification technology. Holographic image technology with better anti-counterfeiting function includes: high-quality panchromatic true three-dimensional holographic technology; Complex dynamic hologram technology; Encrypted holographic technology is just a microcosm of many "material black technologies" taking root in Shenzhen; Digital holography technology; Special hologram carrier technology (such as hologram special embossing material)

(2) laser anti-counterfeiting packaging material

the laser processed material has the functions of anti-counterfeiting and decoration, which changes the local anti-counterfeiting method marked by a small piece of laser holographic image to achieve the overall anti-counterfeiting effect. The whole package is processed by laser. In addition, the manufacturer's name, trademark and other new material industries will pay more attention to the development of short process, low pollution, low energy consumption, recyclable, green, numerical and other production and manufacturing technologies, showing a large area of subject anti-counterfeiting, and the counterfeiters have no way to start. In addition, laser packaging materials can show colorful colors and printing patterns under light irradiation, which makes the appearance bright, and the strange optical effect adds a new, strange and beautiful feeling to the packaging

there are four categories of laser processed packaging materials: ① flexible packaging bags: laser films are made with high and new technology, then compounded with ordinary plastic films, and printed to form laser material flexible packaging bags (called laser flexible packaging bags). ② Hard packing box: one is to use high-tech to produce laser film, and then compound it with cardboard, plus printing to form a hard box. The other is to print on the general cardboard box first, and then compound with the laser treated glazing film to form a glazing cardboard box. ③ Laser paper: laser paper is made directly on paper. The production process of laser paper is difficult and the cost is high. But its advantages are: easy to print, easy to handle, no environmental problems; Some products must be packaged in paper (such as cigarette boxes), which is particularly suitable, such as cigarette boxes, bottle stickers, labels, tax receipts, calendars, gift bags, etc. In order to increase the anti-counterfeiting effect, the manufacturer can use the special holographic pattern logo as the paper base grain, plus the product graphics, to make a unique special packaging paper. ④ At present, there is also a kind of hot stamping foil processed by laser - high-grade electrochemical aluminum products. The logo specially made with it can be displayed in multi-dimensional three-dimensional. Dynamic pictures can be designed by computer, and "light spots" can be reserved for encryption, so that the main pattern can display different patterns from different perspectives. This hot stamping foil is integrated with the package after it is combined with the surface of the package to achieve the dual effects of anti-counterfeiting and beauty

(3) invisible identification system

biocode has successfully developed a new invisible identification system, which uses antibodies as a new material for making anti-counterfeiting identification

this system includes two objects: the marker compound added to the product and the antibody used to identify the existence of the marker and make quantitative analysis if necessary. The marker compound can be a daily chemical, but it must be durable, inert, easy to mix with the product, and meet the requirements of health and regulations. These marks are usually mixed into the product in a small amount of a few percent. Antibodies are specific biometric molecules, and each antibody only recognizes or binds to a specific compound. There are two kinds of marker recognition operations: field test and laboratory test. It can be used to test whether the marker exists or not, and the accurate content can be measured for the replaced or diluted products

surface stealth technology has the following advantages: specific graphics and positions are suitable for specific users; True invisibility; ③ Printed labels with markers can be used, and a set of customized inkjet system can also be installed; High safety (because the marker cannot be seen when there is no specific antibody, and the specific antibody is strictly controlled); The logo image can be erased and redisplayed

product external invisible identification technology has been widely used in drugs, cosmetics and other aspects. Invisible trademarks using antibodies can be used in a wide range of applications, from jeans to automotive fuel. Food additives containing antibodies have been approved by FDA. Because the antibody is non-toxic and tasteless, it can be directly added to whisky to prevent counterfeiting

the invisible anti-counterfeiting trademark has more vitality than the hologram logo

(4) laser coding

laser coding is mainly used for printing the production date and product batch number of packaging, and anti-counterfeiting is not its primary function. Because the laser coder is expensive, it can only be used in mass production or occasions where other printing methods cannot be achieved, so it can play a role in anti-counterfeiting packaging

laser coding sealing technology is a better anti-counterfeiting technology for containers. After the product is filled and sealed, laser printing is carried out at the joint between the cover and the container, so that the upper half of the font is printed on the cover and the lower half is printed on the container

the anti-counterfeiting effect of this technology is that packaging containers cannot be reused. It is difficult to align the handwriting between the new cover and the old container; Lasers are expensive and are coded and printed on the production line. Generally, it is difficult for counterfeiters to invest a large amount of money to buy this equipment; The manufacturer can change the printing template at will. Different templates are used on different dates. Only a few people know the details of replacement, which is difficult for outsiders to crack

in terms of anti-counterfeiting effect, laser coding technology is no worse than laser holographic image technology. The laser holographic logo is printed by the printing factory, and the manufacturer using the logo cannot ensure that the master will not flow out of the printing process or be copied illegally. Laser coders are expensive and must be used. Coupled with the secrecy of the replacement and transformation of font templates, it is difficult for scattered small and medium-sized factories to make fake products

(5) intaglio printing anti-counterfeiting

intaglio printing carries ink in pits carved according to the original text. The thickness of lines and the thickness of ink can be controlled during engraving, which is not easy to be imitated and forged, especially the depth of ink pits. The possibility of realistic carving based on printed graphics and texts is very small. Therefore, paper money, stamps, securities and precious works of art are generally printed in intaglio. Due to its anti-counterfeiting effect, intaglio printing has been increasingly promoted to enterprise trademarks, packaging and decoration printing

the anti-counterfeiting advantage of gravure printing is that manual engraving gravure can implement secret anti-counterfeiting methods. It is particularly effective to allow the substrate with high plate making cost to adopt manual engraving for plate making with small printing volume. Counterfeiters who pursue short-term interests may not be willing to take this investment risk; Plate making and printing are carried out in different places. Try to separate the two working links of plate making and printing, so that the fewer people who know the core content of the whole trademark (or securities) printing work, the better. Of course, attention should also be paid to prevent the theft of printing plates and printed materials; It can be combined with anti-counterfeiting ink technology, and adopts a unique special ink. The composition, particle fineness and additives are kept confidential to the outside world. Even if the printed matter has a unique effect, it has the function of secret anti-counterfeiting

(6) special processes and materials

some products can occupy the market for a long time, that is, they rely on their own special processes. This is an effective secret that causes partial decomposition of materials to produce peculiar smell; After all, there are anti-counterfeiting means of qualified odor formula of modified PP particles. The products with unique production technology are less likely to be forged. It is also a common anti-counterfeiting method to use materials unique to our company in packaging. A typical example is the use of special paper and safety lines in banknotes

(7) special packaging structure

disposable packaging containers, once opened, will be scrapped by themselves and cannot be reused. This can prevent cheating or forgery of "new wine in old bottles"

tamper evident packaging, which is widely used in food and beverage, also has a certain anti-counterfeiting function to prevent products from being stolen and adulterated. Some containers can be designed to be difficult to counterfeit - add your own company's technical know-how to the structure or manufacturing process

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