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Anti-counterfeiting ink containing electrophoresis microcapsule, and print product manufactured thereby

An anti-counterfeiting ink and microcapsule technology is applied in the field of anti-counterfeiting ink containing electrophoretic microcapsules and printed products. The effect of detection means safety

Inactive Publication Date: 2010-09-15
SECURITY PRINTING INST OF PEOPLES BANK OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If electrophoretic microcapsules are used for printing ink, there are two difficulties: one is that the ink will exert greater pressure during printing, causing some microcapsules to rupture, resulting in inconspicuous electrophoretic discoloration; the other is adding electrophoretic microcapsules Particles, whether it will affect the ink itself, that is, whether the ink properties of the ink can meet the requirements of printability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: UV screen printing anti-counterfeiting ink

[0028] Raw material composition (percentage by weight):

[0029] Electrophoretic microcapsules: 55%

[0030] UV transparent resin: 8%

[0031] UV transparent monomer: 25%

[0032] Photoinitiator: 5%

[0033] Leveling agent: 1%

[0034] Defoamer: 0.5%

[0035] Thixotropic agent: 0.5%

[0036] Solvent: 5%

[0037] In the above formula, the electrophoretic microcapsules are capsule particles with titanium dioxide and carbon black as pigment particles, tetrachloroethylene as the dispersion medium, and urea-formaldehyde resin as the wall material, with an average particle size of about 25 μm and a wall thickness of about 1.7 μm. The modifiers of the ink system are selected from translucent-transparent materials.

[0038] The above-mentioned raw materials are weighed in proportion, wetted and dispersed by stirring method, and meet the application technical standard of screen printing ink, that is, UV screen anti-...

Embodiment 2

[0042] Example 2: Thermosetting silk screen anti-counterfeiting ink

[0043] Raw material composition (percentage by weight):

[0044] Electrophoretic microcapsules: 73%

[0045] Thermosetting translucent resin: 4%

[0046] Filler: 2%

[0047] Solvent: 20%

[0048] Leveling agent: 1%

[0049] In the above formulation, the electrophoretic microcapsules are capsule particles with titanium dioxide and carbon black as pigment particles, tetrachloroethylene as the dispersion medium, and urea-formaldehyde resin as the wall material, with an average particle size of about 50 μm and a wall thickness of about 3 μm. Conditioners in this ink system are substantially clear materials.

[0050] The above-mentioned raw materials are weighed in proportion, wetted and dispersed by stirring method, and meet the application technical standard of silk screen printing ink, that is, the screen printing anti-counterfeiting ink is obtained.

[0051] The ink is used to print on the anti-counterf...

Embodiment 3

[0052] The ink performance of this ink meets the requirements of lithographic screen (roller) printing, and the edge of the printed product is clear. Example 3: Engraving gravure anti-counterfeiting ink

[0053] Raw material composition (percentage by weight):

[0054] Electrophoretic microcapsules: 45%

[0055] Transparent gravure binder: 40%

[0056] Transparent Filler: 3%

[0057] Surfactant: 4%

[0058] Wax: 5%

[0059] Solvent: 3%

[0060] In the above formula, the electrophoretic microcapsules used are based on nano-big red powder (phenylazo-2-hydroxy-3-naphthalene) and titanium dioxide as pigment particles, tetrachloroethylene as the dispersion medium, and urea-formaldehyde resin as the wall material. , the average particle size is about 30 μm, and the wall thickness is about 5 μm. The binder and regulator of the ink system are all selected from basic transparent materials.

[0061] The above-mentioned raw materials are weighed in proportion, wetted and disperse...

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Abstract

The invention provides an anti-counterfeiting ink containing electrophoresis microcapsule, and the ink contains 10-90% of electrophoresis microcapsule based on the total weight of the ink. The anti-counterfeiting ink is screen printing ink, gravure ink, litho printing ink, letterpress printing or the like. The anti-counterfeiting ink is used for printing characteristic information on articles which need anti-counterfeiting authentication; after electric field is applied, color change effect is generated on the impress of the anti-counterfeiting ink and can be maintained for a period of time; after reversed electric field is applied, the color of the impress is recovered immediately; after the reversed electric field is continuously applied for a period of time, the color of the impress is changed again and is different from the initial color. By utilizing the change of the specific color, the anti-counterfeiting ink can be used for identifying the authenticity of a print product; and the phenomenon can be identified by a simple instrument by the people, and the testing method is safe. The invention also provides the print product which is printed by the anti-counterfeiting ink and has the anti-counterfeiting identification characteristic.

Description

technical field [0001] The invention relates to an anti-counterfeit ink, in particular to an anti-counterfeit ink containing electrophoretic microcapsules and printed products made using the anti-counterfeit ink. Background technique [0002] Utilizing the changing characteristics of ink printing patterns to identify items, documents or bills has been widely used in the field of anti-counterfeiting, especially in the printing of banknotes, valuable bills and other products. At present, anti-counterfeiting inks that have been frequently used include fluorescent inks, optically variable inks, and temperature-variable inks. With the development of technology, these anti-counterfeiting methods are no longer mysterious. Driven by interests, many commonly used anti-counterfeiting inks have appeared imitations , so it cannot meet the needs of high-end anti-counterfeiting products. In order to improve the anti-counterfeiting technical content of products and increase the difficulty...

Claims

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Application Information

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IPC IPC(8): C09D11/02C09D11/10B01J13/00B44F1/12B42D15/00B42D25/378C09D11/50
Inventor 李晓伟周树荣高瑞吕建英郭钢锋李万里黄和平
Owner SECURITY PRINTING INST OF PEOPLES BANK OF CHINA
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