Fluorescent anti-counterfeiting ink technology

Anti-counterfeiting technology is a cross-cutting discipline that involves many fields such as optics, chemistry, physics, electromagnetism, computer technology, spectroscopy, printing technology, and packaging technology. Ink anti-counterfeiting technology is a kind of anti-counterfeiting technology widely used in the pharmaceutical packaging industry.

This kind of anti-counterfeiting technology is mainly used to add special materials in ordinary ink connecting materials, after special processing, it becomes a special printing ink technology. This type of anti-counterfeiting technology is characterized by: simple implementation, low cost, good concealment, vivid colors, and easy inspection. At present, there are mainly anti-counterfeiting ink UV-activated fluorescent anti-counterfeit inks, magnetic anti-counterfeit inks, thermal anti-counterfeiting inks, sunlight anti-counterfeiting anti-counterfeiting inks, optical variable security inks, pressure-sensitive anti-counterfeit inks, infrared security inks, anti-falsification anti-counterfeiting inks, anti-counterfeiting ink, etc. .

Ink printing anti-counterfeiting is an important part of the pharmaceutical packaging anti-counterfeiting technology. Experiments show that the fluorescent anti-counterfeit inks with fluorescent pigments are good in water, acid, and alcohol resistance, and are now widely used in pharmaceutical packaging, especially in blister packaging. It is also commonly used in other pharmaceutical packaging such as pharmaceutical flexible packaging and pharmaceutical labels. Fluorescent anti-counterfeit ink is a kind of anti-counterfeiting ink which is most widely used in the anti-counterfeiting of pharmaceutical packaging inks.

Fluorescent inks are made by adding the corresponding visible fluorescent compound to the ink. Its anti-counterfeit feature is: Under the action of visible light and ultraviolet rays, printed matter can emit glittering fluorescence. Different formulations can get different fluorescent inks. If ultraviolet ray excitation visible fluorescent compounds (such as tristyryl derivatives, stilbene derivatives, tetrastyryl derivatives, etc.) are added to the ink to obtain ultraviolet fluorescent ink, red, yellow, and green light may be emitted in an ultraviolet irradiation plant. Blue and other visible light. Infrared fluorescent ink can be obtained by adding a visible fluorescent compound having infrared excitation in the ink, and green visible light can be emitted under the irradiation of the infrared light.

Fluorescent ink is invisible and visible.
1 Invisible fluorescent ink security: The material used is invisible fluorescent ink, and the printing process is simple. The ink printed invisible patterns or text, under the irradiation of ultraviolet light, showing a clear and bright fluorescent pattern, colorful. The anti-counterfeiting detection is convenient as long as there is a UV light source or a money detector.

Since the invisible fluorescent ink is invisible or colorless, it is invisible to the naked eye during printing, that is, it does not have any tracking marks for machine identification. Therefore, it is difficult to overprint, but this kind of anti-counterfeit concealment is better and the anti-counterfeiting strength is stronger. At present, most of the domestic pharmaceutical packaging uses this kind of invisible fluorescent ink.

2 tangible fluorescent ink anti-counterfeiting: the material used is tangible fluorescent ink, the printing process is simple, accurate registration, the brush effect is the same as the ordinary ink printing effect, but under ultraviolet light, the prints show abnormal light, at this time, can be distinguished In ordinary ink.