Application of Ink Technology in Anti-counterfeiting (I)

Ink technology is a major aspect of the application of printing technology in anti-counterfeit packaging. The application of ink technology to children's packaging is achieved by changing the ink formulation or by adding special sensitive materials, such as photosensitive materials, heat-sensitive materials, magnetic materials, etc., to ordinary inks. The trademark printed with this special ink has some unique characteristics. Consumers can recognize the authenticity of the product according to different characteristics, and the trademark itself is not easily copied. Therefore, the trademark has an anti-counterfeiting effect.
There are many factors that need to be taken into account in order to make the ink technology reasonably applicable to anti-counterfeit packaging and to achieve the desired anti-counterfeiting effect, including selection of printing methods, selection of printing machines, processing of substrates, use of ink base materials, and printing costs. The company's technology and management level, etc., are limited in length. Here we discuss the security ink technology itself. For other content, please refer to the relevant professional information.
First, anti-counterfeit packaging commonly used ink 1, packaging requirements for printing inks In general, different materials, substrates, printing ink requirements are also different. The materials used in the packaging are ever-changing, and there are a variety of printing inks suitable for different packaging. However, some basic features are what each ink must have.
(1) The basic requirements for packaging printing inks.
A. Good liquidity. The ink with good fluidity is easy to transport when used, it is easy to transfer and does not block the print head.
B. The ink must be able to dry quickly after it is printed on the substrate. The adhesiveness is good and it is not easy to rub off. This ensures the printed product is clean and tidy.
C. The color of the printed product must be correct. It does not fade or change color.
(2) Special requirements for printing inks for packaging A. Colour diversification. The purpose of merchandise packaging and decorating is quite a part for promotion. Therefore, the diversification of printing colors and colorful colors are the basic requirements for packaging printing inks. Appropriate printing inks can be used to print beautifully decorated packaging in order to attract consumers to the commodity. Purchase interest.
The packaging and printing products are all beautifully decorated. Most of the pigments used are organic compounds. The pigments are colorful but their durability is generally not ideal. There is a sense of oldness, so when choosing color inks for packaging, special attention should be paid to the use of pigments that are not suitable to fade, in order to ensure a lasting and bright package.
B. Special process requirements. Different processes have different requirements for printing inks. For Indian iron printing inks, if the printed packaging requires high temperature retort sterilization, then there is no need to consider the issue of high temperature resistance of the ink. General common inks can meet the process requirements, otherwise high temperature resistant cooking inks must be used to prevent foodstuffs. During the sterilization process, the ink discoloration and some chemical reactions and physical changes affect the decorating effect of the commodity packaging.
C. Special hygiene requirements. Hygienic requirements for printing inks are also an important aspect. For example, when printing plastic films for food packaging, the permeability of the printing ink should be taken into consideration so as not to cause food contamination.
D. Special drying requirements. Different materials have different ink drying properties. Like ceramics, tinplate, plastic films and other materials, due to the smooth surface smooth, ordinary ink adhesion, you need to use fast-drying inks, such as UV drying ink, pulsed radiation drying ink.
There are many factors that affect the use of ink, and it is unrealistic to consider all the factors. Therefore, only the main factors are taken into consideration, and the basic qualified printing inks can be prepared by rationally using pigments, binders, and additives first. .
2, anti-counterfeit packaging commonly used anti-counterfeiting packaging printing ink is used in order to make the product after printing the package has a certain degree of anti-counterfeiting capabilities, and in the preparation of printing ink by adding the right amount of special materials, to form a variety of anti-counterfeiting packaging printing ink.
(1) Thermal ink. Also known as temperature-sensitive ink, its pigment can change color according to the change of temperature, and show different colors at different temperatures. There are many types of pigments that can exhibit thermal discoloration. The commonly used pigments include crystal structure change, thermal decomposition, and crystal transfer.
Currently, there are many types of thermal printing inks on the market that can basically meet the requirements of thermal hydrocarbons. However, the difference between different types is larger, for example, the liquid crystal type ink has better color shifting accuracy, 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.
The key to packaging and printing heat-sensitive ink is how to let consumers identify the authenticity. Enterprises can form their own anti-counterfeiting secrets according to different recipes, but they should clearly understand to what color they are exposed to at what temperature. For example, an enterprise uses a thermal printing ink on the trademark of wine. After the trademark is heated, it can display the “Excellent” word mark and it is printed with the “Heat is Excellent” prompt. However, this kind of hint does not give much help to the sub-subjects in terms of the authenticity of the chiefs. Instead, it provides counterfeiters with the idea of ​​counterfeiting, because the heat-sensitive inks that can achieve the effect of "excellent heat" are extremely high, and they are fake and fake. It's easy. The secret of the manufacturer's security is insignificant. If companies choose a reasonable formula, suggesting what color appears at what temperature, then counterfeiters can hardly grasp the secret recipe, consumers can easily identify the authenticity of the goods, and really make packaging printing thermal ink anti-counterfeiting effect. (To be continued)