Anti-counterfeiting weak solvent ink as well as preparation method and safety product thereof

Abstract

The invention provides anti-counterfeiting weak solvent ink, a preparation method thereof and a safety product. The ink is prepared by the preparation method. The ink is printed on a safety product. The anti-counterfeiting weak solvent ink comprises the following components in percentage by weight: 1.5-10% of an infrared absorption dye or an infrared absorption pigment, 60-80% of a solvent, 5-15%of resin, and 2-5% assistant; the anti-counterfeiting weak solvent ink adopts a weak solvent and an infrared absorption dye or an infrared absorption pigment, wherein the weak solvents are environmentally friendly, harm to people and the environment is reduced. By printing ink containing infrared absorption dye or infrared absorption pigment, a printed anti-counterfeiting pattern cannot be seen bynaked eyes of a human body under a natural condition and the anti-counterfeiting pattern can be recognized only by scanning the printing area through the infrared anti-counterfeiting recognition instrument, so that the reproducibility of an original manuscript is not affected while the anti-counterfeiting effect is achieved. The resin can adhere to the dye or pigment, so that the ink has good adhesive force on a printing carrier after the resin forms a film, and anti-counterfeiting information is clear.

Description

technical field [0001] The invention relates to the field of printing ink, in particular to an anti-counterfeit weak solvent, a preparation method thereof, and a security product. Background technique [0002] Inkjet printing is a new type of digital imaging technology that prints digital information on the medium through a digital printer. It has the advantages of flexible printing methods, richer colors, fine printing, no noise, and high cost performance. It realizes the printing process of what you see is what you get. Inkjet printing is widely used in the field of general image printing, printing and dyeing industry, 3D printing industry, photovoltaic cells, QLED and other printed electronic products. [0003] At present, there are many kinds of anti-counterfeiting inks, and many processes adopt new digital printing technology, the purpose is to realize variable pattern anti-counterfeiting printing. Chinese patent CN109177559A discloses a UV color-changing visual anti-c...

AI Technical Summary

Problems solved by technology

Chinese patent CN109177559A discloses a UV color-changing visual anti-counterfeiting printing process, the process is simple, the pattern and text cannot be seen under normal light, and the pattern and text effect can be presented under ultraviolet light irradiation, which can play a good anti-counterfeiting effect, but using When ultraviolet light is used to judge the authenticity, ultraviolet light will cause certain damage to the human body

Chinese patent CN1211598A discloses a manufacturing process of anti-counterfeiting inkjet ink. Special substances are added to the dyes of office anti-counterfeiting weak solvent inks as special anti-counterfeiting materials, and special identification infrared scanners are used to identify whether there are these in printed graphics and numbers. special substance, and use it as a standard for distinguishing true and false, and increase anti-counterfeiting efforts in the process of officeization, but the application field of this invention is narrow, and it is not suitable for large-scale industrial production and printing needs

Chinese patent CN107746626A discloses a water-based nano-long afterglow energy storage type anti-counterfeiting inkjet ink and its preparation method. The product is green and environmentally friendly, has certain anti-counterfeiting performance, simple raw material configuration, continuous and reasonable process, and realizes high-purity inkjet processing. Carry out mass production, but can not achieve optional anti-counterfeiting and good anti-counterfeiting control, after lighting, it will affect the reproduction performance of the original

Chinese patent CN109517443A discloses a microcapsule-containing low-shrinkage infrared-absorbing UV-curable anti-counterfeit inkjet ink and its preparation method. The microcapsule method is used to effectively control the odor of the active diluent, and the interface polymerization method is used to realize the active dilution of the polyurethane acrylic acid prepolymer. The coating of the agent; the product has the characteristics of good uniformity, fast curing, low coating shrinkage, and low odor; but the product of the invention is a UV system, which will cause harm to the human body during the printing and production process, and the amount of the initiator after the product is cured Residues will also cause certain hazards to the environment and humans.

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