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 inconspicuo...

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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