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Ultraviolet curing printing ink as well as preparation method and security product thereof

An ink and ultraviolet technology, applied in the field of printing, can solve the problems of low color saturation, unable to meet the needs of micro-pattern printing effect, and inaccurate filling of micro-patterns.

Active Publication Date: 2013-10-02
CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the color saturation of the existing liquid ink for UV inkjet printing is low, which obviously cannot meet the needs of micro-pattern printing.
In addition, the viscosity of the liquid ink used in inkjet printing is too low, usually only a few tens of centipoises. When used in micro-pattern printing, it will cause the micro-pattern to be filled or not filled, and the color saturation of the micro-pattern will be limited. These problems have seriously restricted the application of UV-curable inks in micro-pattern printing.

Method used

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  • Ultraviolet curing printing ink as well as preparation method and security product thereof
  • Ultraviolet curing printing ink as well as preparation method and security product thereof
  • Ultraviolet curing printing ink as well as preparation method and security product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] According to the formula of table 1, the red pigment preparation (produced by BASF, trade name: Composite reactive monomer (60:40 ratio) composed of (propoxylated) dipropylene glycol diacrylate and trimethylolpropane trimethacrylate (ratio: 60:40) and wetting and dispersing agent (manufactured by Tego, trade name: Disprs685) After mixing and stirring at a speed of 800-1200 rpm for 30 minutes, then grind to make a color paste with a particle size of <400nm, wherein the viscosity of the composite active monomer at 25°C is ≤70mPa·s;

[0041] The defoamer (produced by Tego, trade name: Airex986), prepolymer (produced by Sartomer, trade name: CN910A70), aldehyde and ketone resin and radiation curing additive (produced by Tego, trade name: Rad2250 ) According to the formula in Table 1, add it to the above color paste, and stir it thoroughly to make premixed ink;

[0042] will be given by Add the composite photoinitiator to the premixed ink prepared above, and stir for 30 ...

Embodiment 2

[0050] According to the formula of table 2, the blue pigment (produced by BASF company, trade name: A composite reactive monomer (80:20 ratio) composed of tripropylene glycol diacrylate and trimethylolpropane trimethacrylate and a wetting and dispersing agent (manufactured by BYK, trade name: Disperbyk-161) were prepared at 800 - Mixing and stirring at a speed of 1200 rpm for 30 minutes, and then grinding to make a color paste with a particle size of <400nm, wherein the viscosity of the composite active monomer at 25°C is ≤70mPa·s;

[0051] Add defoamer (manufactured by BYK, trade name: BYK-020), polyester resin, radiation curing additive (produced by Tego, trade name: Rad2250) to the above color paste according to the formula in Table 2, and fully Stir to make premixed ink;

[0052] will be given by Add the composite photoinitiator and propylene glycol methyl ether acetate to the premixed ink prepared above, and stir for 30 minutes to make a finished UV-curable ink with a...

Embodiment 3

[0056] According to the formula in Table 3, the red pigment (produced by Clariant, trade name: 206153), the composite active monomer composed of dipropylene glycol diacrylate and ethoxylated trimethylolpropane triacrylate (the ratio is 70: 30) and wetting and dispersing agent (manufactured by EFKA, trade name: EFKA-4310) at a speed of 800-1200 rpm, mixed and stirred for 30 minutes, and then ground to make a color paste with a particle size of <400nm, wherein , the viscosity of the composite active monomer at 25°C is ≤70mPa·s;

[0057] Add defoamer (produced by BYK company, trade name: BYK-020), aldehyde and ketone resin, radiation curing additive (produced by Tego, trade name: Rad2250) to the above-mentioned color paste according to the formula in Table 3, and fully Stir to make premixed ink;

[0058] will be given by Add the composite photoinitiator and propylene glycol methyl ether acetate to the premixed ink prepared above, and stir for 30 minutes to make a finished UV-c...

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Abstract

The invention provides ultraviolet curing printing ink as well as a preparation method and a security product thereof. The ultraviolet curing printing ink has a particle size less than 500nm and comprises the following components in percentage by weight: 10-25% of colouring agent, 55-75% of compound active monomer, 0-5% of prepolymer, 8-15% of compound photoinitiator, 0.1-0.5% of defoaming agent, 1-4% of wetting dispersant, 0.5-3% of adhesive force enhancing resin, 0.03-0.5% of radiation curing auxiliary and 0-10% of solvent. The invention also provides a preparation method and a security product of the ultraviolet curing printing ink. The ultraviolet curing printing ink is prepared by selecting and matching a printing ink system, viscosity, adhesive force, colour saturation and the like of the prepared ultraviolet curing printing ink can be well matched with micro pattern printing, and the effect of improving the colour saturation and anti-counterfeiting level of a printed pattern and a printed product is realized.

Description

technical field [0001] The invention relates to an ultraviolet curing ink, a preparation method thereof and a safety product, belonging to the technical field of printing. Background technique [0002] Micro-lens array optical anti-counterfeiting element (also known as micro-optical security system) is an advanced anti-counterfeiting technology that has emerged in recent years. Because this technology can produce obvious visual dynamic effects, and is easy to be identified and extremely difficult to imitate, it is regarded as Important public anti-counterfeiting features of banknotes and special tickets. The micro-lens array optical anti-counterfeiting element is composed of micro-lens array and micro-pattern array. The micro-lens array can enlarge the micro-pattern array and produce dynamic effects. Wherein, the micro-pattern molding layer is made of UV polymer material, and the depressed micro-pattern is formed by embossing patterns on the micro-pattern array molding laye...

Claims

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Application Information

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IPC IPC(8): C09D11/02C09D11/10
Inventor 周树荣麻宝成朱军高瑞吕建英武建国
Owner CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD
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