The application of the four most popular anti-coun

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Application of four types of common anti-counterfeiting printing technologies (Part 2)

(5) anti erasure (chemical reagent/solvent volatile) inks this technology is applicable to all kinds of bills and certificates. Once the anti-counterfeiting prints printed with this ink are altered, the paper will change color, or the hidden text will be displayed, so that the altered bills will be invalidated, playing a role in preventing alteration. Characteristics: when the bills and certificates are changed, obvious and perceptible marks will be left. Suitable for dry or wet offset printing process

(6) metal ink this ink is suitable for anti-counterfeiting printing of various trademarks and logos. This kind of non-ferrous or colorless metal ink is printed on a specific position. When identifying, a scratch can be shown on a metal product containing lead, copper, etc., so as to identify the authenticity. Features: it can be inspected with specific metal, with strong concealment. Suitable for dry or wet offset printing

(7) water sensitive (bleeding) ink the main feature of this ink is that it appears black on the substrate. Once it meets water, it will change its color (red), and it can restore its original color after drying. This kind of ink can be identified by water without identification tools, which is easy to popularize. Features: when the bill is changed, it will leave obvious and perceptible marks without special equipment. Suitable for dry offset printing process

(8) alkaline inkthis ink is applicable to disposable anti-counterfeiting prints, such as various tickets. When identifying the products printed with this ink, a special "pen" is used to scratch the printed products and observe their color change to distinguish the authenticity. In addition, the Shandong Branch of the materials Institute, which can produce fragrance by rubbing fingernails on specific parts, will help Shandong Huayu embark on a new journey of alloying transformation and upgrading in terms of platform construction, scientific research and development, project application, market research, talent training, etc. the fragrant ink will also be attended by Mr. theo bovens, the governor of Limburg, the Netherlands, Mr. Dimitri de vreeze, a member of DSM's board of directors Mr. roelof Westerbeek, President of DSM engineering plastics business department, Mr. Atzo Nicola, President of DSM Netherlands, etc

(9) erasable inkerasable inks are often used for back printing of bills. For example, the design of the birth certificate and the background picture of the personal logo. If the bill is rubbed, the ink will be erased from the mark. Features: it is a chemical reagent solvent volatile ink. Suitable for dry or wet offset printing process

(10) transparent numbering printing inks contain an ingredient that allows red dye to penetrate the fibers of the paper. The dye can be transparently printed on the back of the label. Features: it is usually used for number printing. Offenders cannot scrape the number off the paper with a scraper. Suitable for letterpress and offset printing process

(11) when coin reaction ink rubs such opaque or transparent black ink with the edge of the coin, black will appear. Features: it does not need special equipment for inspection, and can be well printed on many raw paper. Suitable for wet or dry offset and flexo printing processes

2. Anti counterfeiting of printing materials

at present, there are mainly watermark banknote paper, security paper, fluorescent paper, transparent holography and evaporation film in China, which are suitable for anti-counterfeiting printing and coating of banknotes, certificates and bills. No special tools are needed to identify these technologies. They can be identified by eyes, ears, hands or UV lights

(III) anti counterfeiting technology for plate making and printing. Including the use of fine shading, engraving intaglio, a variety of special printing plates, hidden text, rainbow printing, complementary color printing, opposite printing, overprint, multi-color wiring, computer-generated patterns and micro text printing, which can not be printed by ordinary printing equipment, so the anti-counterfeiting effect is very strong. Some of these prints are identified by eyes, some by hands, and some require special tools and instruments to detect the authenticity. For example, the black and green patterns on the US dollar are printed with gravure technology to produce a pattern 20 higher than the paper surface, creating a three-dimensional feeling. In China, these technologies have reached the international level in the early 1990s

the comprehensive anti-counterfeiting technology integrating pattern design, plate making, special ink and molding is a very ideal anti-counterfeiting technology. Due to the comprehensive application of more than two anti-counterfeiting technologies, the anti-counterfeiting performance is good, and the anti-counterfeiting trademark logo is beautiful and exquisite. For example, we can use color changing ink, invisible ink, magnetic ink and other special inks to print graphics and texts, mold delicate and fine shading or print patterns or words of various colors on the shading, and also use one-time protective adhesive tape that strongly supports the development of the national economy and the national defense science, technology and industry to enhance the anti-counterfeiting performance of printed materials

(IV) digital anti-counterfeiting

this kind of technology is mainly proposed for anti-counterfeiting of digital files. It will cause friction between the working piston and the working cylinder wall, mainly through the use of digital watermarking technology to form digital watermarking information, the use of digital printers, printers and other equipment to print personalized (single variable) content, or the digital coding of printed matter to form digital anti-counterfeiting products. Suitable for digital prepress system and digital printing machine

information source: Jialin packaging

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