Application of Ink Technology in Anti-counterfeiting (Part 2)

(2) Magnetic ink. The magnetic ink used is a magnetic material. Commonly used are ferric oxide and triiron tetraoxide. The former is brown and the latter is black. The residual magnetic properties of the two are relatively high. The edge binder is generally an alkyd resin, and other pigments can also be added to the magnetic ink to obtain various colors of ink.
Magnetic ink was first used primarily for printing codes on credit cards. With the development and development of computer and computer reading scanning systems, various kinds of magnetic cards came into being, from meal ticket magnetic cards used by college students to shareholders' cards in the stock market, from various shopping cards to post and telecommunications systems in postal and telecommunications systems. The use of magnetic ink provides a broad field. Because the magnetic card has the characteristics of convenient carrying and quick settlement, it will be used more widely.
Magnetic ink is used for anti-counterfeiting packaging. It is mainly printed on a certain part of the package with magnetic ink and can be detected by special means to form a secret anti-counterfeit.
All kinds of magnetic cards are subject to friction during the scanning and reading, and must be stored under the effect of the electric field of the reading system. Therefore, it is required that sufficient ink layer thickness and density be achieved during printing.
(3) Fluorescent inks and phosphorescent inks. The fluorescent ink is made of a fluorescent material dissolved in the corresponding resin. Fluorescent pigments are generally finer particles, and the types of binders are also more. Different binders will produce different fluorescence. When using fluorescent inks, it should be ensured that it has sufficient concentration, and the ink layer of printing products should be thicker. Satisfactory fluorescence effect is guaranteed.
Prints printed with fluorescent inks are brightly coloured and have a good decorating effect. They emit sparkling fluorescence under the influence of visible light and ultraviolet light.
The anti-counterfeiting packaging fluorescent inks have the best anti-counterfeiting effect. Different formulas can get different fluorescence effects, and it is generally difficult to realistically counterfeit. The formula is in the hands of the enterprise itself, thus forming a security secret. Fluorescent inks have poor lightfastness and have poor results for outdoor prints.
Phosphorescent inks are characterized by the ability to absorb light incident on them and emit them at a certain wavelength for a certain period of time. The pigments are sulphide compounds. The binders are generally neutral transparent substances, such as cups of ketones. Wait. Mainly used for printing advertisements, signs, etc. Blending phosphorescent inks with fluorescent inks can result in better anti-counterfeit packaging.
(4) security ink. Anti-counterfeiting ink, also known as insurance ink and security ink, is the earliest special ink used in the field of anti-counterfeiting. It is mainly designed to deal with the use of faded spirits and other criminals to change bills. It is used to print invoices and shading of all securities. When a chemical such as faded spirit is encountered, the shading disappears or discolors. To find traces of alteration.
The mechanism of anti-counterfeiting ink fading mainly includes two aspects: one is the use of discoloration pigments, such as some basic dyes, and the other is the use of contact materials that can change color when exposed to discoloration or some other chemical substances. Phenol and so on. Both methods can get satisfactory results. Adding fluorescent materials to the security ink will prevent the packaging from being better.
(5) Spray ink. Inkjet printing ink, suitable for spraying metal, plastic, glass and other materials. The pigments for spraying inks are water-soluble dyes, and the binders are mainly polyester, polyether, chlorinated polyolefin, and the like.
Inkjet printing is used more and more widely in anti-counterfeiting packaging. Because of its fast printing speed and good quality, it has been extensively equipped on the production line for printing dates and other labels. In early inkjet printers, due to the unstable quality of spray ink used, the nozzles were often blocked and the production was stopped. Now it has basically been solved. Therefore, it is required that the viscosity of the sprayed ink be appropriate and the fluidity be better. So as not to clog the nozzle.
Improve the formulation of spray ink, add appropriate amount of fluorescent materials, magnetic materials, heat-sensitive materials and so on. It will make the anti-counterfeiting effect of spray ink better.
Second, the application of security inks There are many types of security inks. With the development of science and technology, new anti-counterfeiting inks are constantly emerging. In general, there are more studies on the characteristics of anti-counterfeiting inks, but the application of anti-counterfeiting inks Insufficient exploration and packaging that uses anti-counterfeit inks cannot achieve effective anti-counterfeit effects. Therefore, it is necessary to discuss the application of anti-counterfeiting ink, so that the anti-counterfeiting ink can really play the role of packaging anti-counterfeiting.
1. Online use of anti-counterfeiting inks The use of anti-counterfeiting inks is now mostly in the form of trademarks. After the printing companies hand over the trademark to the packaging company, the packaging company attaches it to the packaging container. The disadvantage of this kind of procedure lies in the fact that the company does not know the specific formula of anti-counterfeit ink, that is, it does not know the anti-counterfeit secrets, and gives up the initiative of commodity anti-counterfeiting. The formula of the trademark and its ink easily flows into the hands of criminals.
The method to overcome the above disadvantages is the online use of security ink. Enterprises can arrange printing machinery directly on the packaging line. Anti-counterfeiting inks can be deployed by themselves (general enterprises can do it). According to different dates, different products can use different formulations, so that the safety of ink formulations can be guaranteed. There is also no disadvantage of ink formulations flowing into the hands of others.
The online use of ink is in fact the company has mastered the secret formula of ink, so as to achieve the purpose of anti-counterfeiting. In fact, in all anti-counterfeiting methods, secret prevention is the most reliable one. Many of the world's largest companies rely on secret prevention and security to keep their own brands, such as Coca-Cola Company, Jianlibao Company, etc., without exception.
2, anti-counterfeiting ink spring 褂 br br br> over time, each type of security ink will lose its novelty and confidentiality, but as long as we give proper use, it will be its longevity, will be anti-counterfeit Composite use of ink is a good way.
There are mainly two methods for the composite use of anti-counterfeiting inks. One is the use of two or more anti-counterfeit inks in combination, combining the respective characteristics of the two inks to form a new anti-counterfeiting ink; the other is to use characters or patterns with two One or two or more security inks are printed. For example, if a pattern like a bar code is printed, a magnetic anti-counterfeit ink can be used to print the pattern strips, and the thermal ink is used to print the pattern voids. Obviously, this is to increase the technical content of the anti-counterfeiting ink. If this composite method can be used, When used online, you will receive better anti-counterfeiting effect.
In summary, the application of ink technology in anti-counterfeit packaging is becoming more and more widespread. Only by continuous development and application, scientifically combining ink technology with packaging design and processing, and continuously innovating, will be able to better use the ink. The anti-counterfeiting effect.