Optical variable pigment for security printing industry

Optical variable ink is a typical anti-counterfeiting ink in the field of anti-counterfeiting packaging and printing.

In recent years, the application of anti-counterfeiting technology to packaging has been a common thing, so as to ensure that the rights and interests of consumers and the goodwill of business units are not infringed. Here we will introduce the application of this light-varying ink, which is more common in packaging and printing, in packaging and printing.

Optical variable ink play an important role in the field of anti-counterfeiting because of their complex manufacturing process, difficult formulation technology and high imitation difficulty. Its manufacturing process is first to select substances with different refractive indices to make them into photovariable film pieces, and then through a series of physical and chemical means to make them into different photovariable inks suitable for different printing methods such as offset printing, letterpress printing, gravure printing and screen printing.

After printing in the packaging of items, the fragments in the optical variable ink can still maintain the original dynamic discoloration effect and pearling, metallic luster effect and other characteristics, it is because of this special point, so that it has other inks can not have anti-counterfeiting characteristics.

At the same time, the optical variable ink is non-toxic and harmless after printing, and there is no pollution to the environment, so it is widely used in packaging fields such as passport, currency, tobacco, wine, cosmetics and so on.