The main application of security ink in packaging printing

Ink anti-counterfeiting packaging technology is the anti-counterfeit packaging technology developed after the printing of anti-counterfeit packaging. This kind of anti-counterfeit packaging is to print the ink with special properties onto the packaging. Users (consumers) can use simple methods (such as lighting, heating, etc.) to identify the authenticity when they purchase goods. Ink anti-counterfeiting packaging is the most commonly used, but also more popular anti-counterfeiting packaging technology. Especially in the paper container packaging products are widely used, identification methods are described on the packaging.

It is a relatively advanced first-line anti-counterfeiting packaging technology. It has the characteristics of high imitation difficulty, high input cost for product development, and difficulty in densification. Many of the ink anti-counterfeit packaging are encrypted on the material formula and combined with special processes. Therefore, counterfeiters are difficult to duplicate in a short time and have better reliability than printing anti-counterfeit packaging. There is reversible and irreversible distinction between the identification information of ink security packaging. Reversible refers to reusable and multiple recognition; irreversible refers to one-time identification, once it is recognized, it will destroy its anti-counterfeiting function and lose its anti-counterfeiting effect. Anti-counterfeiting inks are common in many types. For example, optical variable ink, magnetic ink, thermal ink, conductive ink, etc. No matter what kind of anti-counterfeit inks, they are specially processed in their distribution ratio and manufacturing process. After printing on the packaging, consumers can receive special signals by stimulating their identification parts (signs, labels, labels, etc.) (such as lighting, heating, magnetoelectric contact, etc.) according to their instructions. In order to achieve (judgment) anti-counterfeiting purposes.

There are many factors that need to be taken into consideration when using ink technology to reasonably apply to anti-counterfeiting packaging and obtain the desired anti-counterfeit effect, including the choice of printing methods, the selection of printing machines, the processing of printed parts, the use of ink base materials, and the cost of printing. Enterprise technology level and so on.

Specifically, the ink used for anti-counterfeit packaging refers to the printing ink that has a certain amount of special substances in the preparation of printing ink in order to make the product after packaging printing have a certain anti-counterfeiting capability, and the printing ink exhibits special properties under certain conditions after printing. . Varied special materials have formed a variety of anti-counterfeit packaging inks.

Thermal ink

Thermal ink pigments can change color depending on the temperature, and different temperatures show different colors. There are many kinds of pigments that can exhibit the thermal discoloration characteristics, and there are commonly used crystal structure change types, thermal decomposition types, and crystal transfer types. At present, there are many kinds of thermal printing inks on the market, which can basically meet the requirements of thermal discoloration. However, the characteristics of different types are quite different. For example, the liquid crystal type ink has better discoloration, the metal chromium salt type ink has stronger light fastness, the printing ink of fuel type has bright colors, and the packaging and decorating effect is good.

Magnetic ink

Magnetic ink pigments are magnetic materials, commonly used are three iron oxide, etc., the residual magnetic properties are relatively high, continuous material is generally alkyd resin, you can also add other pigments in the magnetic ink to get a variety of colors of ink . Magnetic ink is used in anti-counterfeit packaging to form a secret anti-counterfeiting function. In a certain part of the packaging with magnetic ink printing, with special means can be detected, thus forming a secret anti-counterfeiting.

Fluorescent inks and phosphorescent inks

The fluorescent ink is made by dissolving the light material in the corresponding resin. Fluorescent pigments are generally larger in size, and the types of binders are also more. Different binders will produce different fluorescence. When using fluorescent inks, they should ensure that they have sufficient agricultural quality. The ink layer on the printed products should be thicker. In order to ensure a satisfactory fluorescence effect. 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.

Of course, every type of security ink loses its novelty over time, but as long as we use it properly, it will extend its useful life. The use of anti-counterfeiting inks is a good approach. There are two main methods for composite use of anti-counterfeiting inks. One is to combine the characteristics of two or more anti-counterfeiting inks to form a new anti-counterfeiting ink; the second is to use characters or Patterns are printed with two or more security inks. For example, if you print a barcode-like pattern, you can use a magnetic anti-counterfeiting ink to print the pattern strips, and print the pattern empty with each ink. Obviously, this will increase the technical content of the security ink. If this composite method can be used online, it will receive a better anti-counterfeiting effect.

Author: rustling Source: Indian network