Security ink development trend

With the development of packaging printing, the close combination of anti-counterfeiting technology and printing technology is of great significance in combating fake and shoddy products and regulating the market order. The printing ink anti-counterfeiting technology has developed in a good form, with a wider range of applications and better and better results. Taking an anti-counterfeiting ink with a wide range of applications as an example, it has been combined with many disciplines (such as optics, chemistry, electromagnetics, spectroscopy, etc.) to develop integrated ink anti-counterfeiting technology.

Anti-counterfeiting ink is a kind of special printing ink made by adding special anti-counterfeiting material to the ink's binder material. At present, the most widely used anti-counterfeiting inks are classified into seven categories: (1) ultraviolet laser fluorescent inks; (2) daylight laser color inks; (3) thermal security inks (thermochromic security inks or temperature-change security inks); 4) chemical reaction color ink; (5) intelligent machine read security ink; (6) multi-functional or integrated security ink (laser holographic plus fluorescent security ink); (7) other special ink (such as OVI light refraction security ink, etc.). These inks are characterized by the implementation of different external conditions (mainly using light, heat, spectral detection, etc.) to observe the color change of ink samples to achieve anti-counterfeiting purposes.

The domestic optical variable ink has the characteristics of dynamic color change and is difficult to reproduce. China's 1999 version of 100 yuan used anti-counterfeiting technology of optical variable ink. The anti-counterfeit marking has never been copied by others in more than three years. At the same time, this light-variable ink is also widely used in various types of securities, trademarks, certificates, notes and product packaging printing anti-counterfeiting. However, at present, imported security printing ink still occupies a considerable proportion. For example, train tickets printed by the Ministry of Railways have caused huge losses to the country due to fake tickets and altered tickets. It is said that it is equivalent to the Beijing-Guangzhou line and the Beijing-Harbin line. The total income of the ticket. Recently, the Ministry of Railways decided to renew Yan’s tickets. The country’s annual national printing capacity is about 700 million, and 700 tons of paper is used. One of the important reasons for the dependence of ink on imports is the quality and quality of domestic anti-counterfeiting inks. There is still a certain gap compared to this.

The development trend of anti-counterfeit inks is: in the aspect of gravure inks, the goal is to increase the production of lower floors, reduce costs, enhance environmental protection, and improve the feel of gravure printing; in the light of variable light, to improve the light change effect and reduce The cost is the target; in the field of thermal inks, the aim is to improve the performance of the heat-sensitive materials and the sensitivity to discoloration, that is, to develop detection instruments and related technologies when developing inks, in order to improve the anti-counterfeiting performance of the machine reading; To develop a unique infrared transparent, infrared absorbing material as the goal. These are also the focus of security ink innovations.

Source: China Ink Technology Network