A double anti-counterfeiting printing production technology

Abstract

The invention discloses a double anti-counterfeiting printing production technology for printing plastic films. Invisible anti-counterfeiting printing adopts the formula of benzene-free and ketone-free fluorescent ink, and high-precision anti-counterfeiting mass pattern printing adopts the formula of benzene-free and ketone-free ink. An invisible fluorescent anti-counterfeiting printed pattern isa word mark of a product, with the character height of 3 mm and a total width of 5 mm. The invisible fluorescent anti-counterfeiting printed pattern does not show color under visible light and is bright blue under ultraviolet light with a wavelength of 365 nanometers. The middle of a high-precision anti-counterfeiting mass printed pattern is a circular axisymmetric multi-layer reticular pattern, and 39 Chinese characters with the character height of 0.5 mm are evenly distributed outside the circle. The high-precision anti-counterfeiting mass printed pattern is red or orange under visible light. A product produced by applying the double anti-counterfeiting printing technology is high in printing precision, high in concealment and difficult to imitate, and the technical difficulties that a fluorescent anti-counterfeiting pattern in the prior art becomes blurry easily, and is easy to appear and imitate are overcome.

Description

technical field [0001] The invention relates to the technical field of gravure printing. Background technique [0002] In the food packaging gravure printing industry, printing ink is one of the important raw materials. Currently there are three technical difficulties in the application. [0003] First, the industry standard for gravure ink is QB / T 2024, the national standard for anti-counterfeit ink is GB / T 22467.2, and the residue of benzene solvents related to food safety requirements is 0.5mg / m 2 , trace residues are allowed, but in the actual use in the field of food production, it is stipulated that the residues of benzene solvents shall not be detected. Therefore, the national standards for inks do not match and are compatible with the national standards for food packaging, especially the research and development of anti-counterfeiting inks is relatively lagging behind, many printing manufacturers know little about ink formulations, and ink manufacturers lack awaren...

AI Technical Summary

Problems solved by technology

[0003] First, the industry standard for gravure ink is QB / T 2024, the national standard for anti-counterfeit ink is GB / T 22467.2, and the residue of benzene solvents related to food safety requirements is 0.5mg / m 2 , trace residues are allowed, but in the actual use in the field of food production, it is stipulated that residues of benzene solvents shall not be detected

Therefore, the national standards for inks do not match and are compatible with the national standards for food packaging, especially the research and development of anti-counterfeiting inks is relatively lagging behind, many printing manufacturers know little about ink formulations, and ink manufacturers lack awareness of national standards for food packaging. Insufficient attention was paid to the review of ink compliance, and chemicals were randomly added during the ink production process, resulting in excessive plasticizer content and benzene solvent residues in printed matter

[0004] Second, in the prior art, the printability of the anti-counterfeiting ink is poor. In a 10-color or 11-color ink system, the area of ​​the anti-counterfeiting pattern is relatively small, and it is difficult to find the quality variation of the anti-counterfeiting printing. The fluorescent anti-counterfeiting pattern is placed on the printed matter. In the case of more than 30 days, it is easy to become blurred, and the definition is reduced and irreversible, resulting in poor printing quality

[0005] Third, in the prior art, the printing pattern of the ultraviolet-excited fluorescent ink is often arranged in the first color printing, which is easily interfered by other inks during the printing process, especially "appearing" at the overlapping color, resulting in anti-counterfeiting fail

[0008] Analyze the characteristics of the three types of invention patents listed above. The first type of invention patent is characterized by organic fluorescent inks that are red under ultraviolet light. The second type uses plasticizers to improve the printability of inks. , its disadvantage is that it cannot be used in food packaging

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