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Anti-forgery ink having color changes after laser radiation and application thereof

A technology of anti-counterfeiting ink and color change, which is applied in inks, applications, household appliances, etc., can solve the problems of insufficient anti-counterfeiting effect, and achieve the effects of convenient detection of anti-counterfeiting features, simple preparation method and wide application range

Inactive Publication Date: 2014-08-06
SHANGHAI SHENGYE PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN101838486A discloses a near-infrared absorption anti-counterfeiting ink, which is mixed and processed from commercially available pigments, resins, vegetable oils, mineral oils, filler additives, etc., and near-infrared absorption anti-counterfeiting materials, which can be used for printing various securities, Anti-counterfeiting functions are used on bills, trademarks and other materials. Since this patent uses a near-infrared absorption anti-counterfeiting material, the ink has only one absorption peak under the infrared spectrum, and the anti-counterfeiting effect is not strong enough.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0024] An anti-counterfeiting ink that can produce color changes after laser irradiation. The anti-counterfeiting ink is made of the following components and raw materials in weight percentage: temperature-changing pigment 25, infrared absorbing material 10, colorant 5, resin 35, vegetable oil 5, auxiliary agent 5 , solvent 15.

[0025] Among them, the temperature-changing pigment changes color at 30°C. The absorption wavelength of the infrared absorbing material is 700-1200nm. The infrared absorbing material contains cobalt element. The resin is polyurethane resin. The vegetable oil is linseed oil. The additive is calcium carbonate. The solvent is ethanol or n-butanol.

[0026] A method for preparing an anti-counterfeiting ink that can produce color changes after laser irradiation, the method includes mixing, dispersing, and stirring temperature-changing pigments, infrared absorbing materials, colorants, resins, vegetable oils, additives, and solvents, and then rolling t...

Embodiment 2

[0030] An anti-counterfeit ink that can produce color changes after laser irradiation, the anti-counterfeit ink is made of the following components and raw materials in weight percentage: temperature-changing pigment 20, infrared absorbing material 5, colorant 1, resin 30, vegetable oil 10, auxiliary agent 10 , solvent 24.

[0031] Among them, the temperature-changing pigment changes color at 30°C. The absorption wavelength of the infrared absorbing material is 700-1200nm. The infrared absorbing material contains iron element. The resin is phenolic resin. The vegetable oil is soybean oil. The additive is magnesium carbonate. The solvent is ethyl acetate or butyl acetate.

[0032] A method for preparing an anti-counterfeiting ink that can produce color changes after laser irradiation, the method includes mixing, dispersing, and stirring temperature-changing pigments, infrared absorbing materials, colorants, resins, vegetable oils, additives, and solvents, and then rolling ...

Embodiment 3

[0036] An anti-counterfeiting ink that can produce color changes after laser irradiation, the anti-counterfeiting ink is made of the following components and raw materials in weight percentage: temperature-changing pigment 23, infrared absorbing material 5, colorant 2, resin 40, vegetable oil 7, auxiliary agent 8 , solvent 15.

[0037] Among them, the temperature-changing pigment changes color at 30°C. The absorption wavelength of the infrared absorbing material is 700-1200nm. Manganese is contained in the infrared absorbing material. The resin is acrylic resin. The vegetable oil is linseed oil or soybean oil. The additive is barium sulfate. The solvent is toluene or xylene.

[0038] A method for preparing an anti-counterfeit ink that can produce color changes after laser irradiation, the method includes mixing, dispersing, and stirring temperature-changing pigments, infrared absorbing materials, colorants, resins, vegetable oils, additives, and solvents, and then rolling...

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PUM

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Abstract

The invention relates to an anti-forgery ink having color changes after laser radiation and application thereof. The anti-forgery ink is prepared from the following raw materials by weight: 20 to 30% of a temperature-change pigment, 5 to 20% of an infrared absorption material, 1 to 5% of a coloring agent, 20 to 40% of a resin, 5 to 10% of plant oil, 5 to 10% of an auxiliary agent and 15 to 30% of a solvent. Offset ink, numbering machine ink, photogravure ink, intaglio ink or silk-screen printing ink according with printing standards can be prepared from the anti-forgery ink for anti-forgery printing of packaging materials or bills. Compared with the prior art, the anti-forgery ink provided by the invention has the advantages of great anti-forgery capacity, easy manufacture, a wide application scope, etc.

Description

technical field [0001] The invention relates to an anti-counterfeiting ink, in particular to an anti-counterfeiting ink which can produce color changes after laser irradiation and its application. Background technique [0002] Negotiable securities, bills, famous trademarks, etc. are often forged by criminals, which has become a major public hazard today. The existing anti-counterfeiting inks all have a single anti-counterfeiting function, low technical content, and easy to imitate. With the improvement of social science and technology, criminals are becoming more and more rampant, and it is imperative to strengthen the technical content of anti-counterfeiting products and the difficulty of counterfeiting. [0003] Chinese patent CN101838486A discloses a near-infrared absorption anti-counterfeiting ink, which is mixed and processed from commercially available pigments, resins, vegetable oils, mineral oils, filler additives, etc., and near-infrared absorption anti-counterfeit...

Claims

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Application Information

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IPC IPC(8): C09D11/50
Inventor 左鹏沈欣余勇
Owner SHANGHAI SHENGYE PRINTING
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