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Water-scraped without set-off intaglio ink

A technology of gravure printing ink and smearing, applied in ink, printing, printing devices, etc., can solve the problems of poor metal texture of printed products, affecting the aesthetic effect, and discounting the anti-counterfeiting strength

Active Publication Date: 2010-12-22
CHINA BANKNOTE PRINTING & MINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Take metal (effect) ink as an example. Common binders, additives and fillers are used in this type of ink. After printing, there will be defects such as poor metal texture and dark color of the printed product. In addition to affecting the aesthetic effect, the anti-counterfeiting strength will also be affected. discount
Canadian patent (CA2280550) discloses a kind of bright metallic engraving gravure printing ink, and its research result thinks that the filler in the ink hides the brightness of metal particle, therefore does not contain any filler in its ink formula, but in order to solve the resulting The problem of poor ink stability is that the ink is designed as a two-component separate storage, and it is mixed and prepared before use, which also brings production limitations; in addition, the bright metal engraving gravure ink needs to be heated to dry after printing. The linking material used is a commercially available linking material (as a roller rubbing engraving gravure gold ink, the acid value is 45-80mgKOH / g); for the printability of engraving gravure metal ink for banknotes, water rubbing does not rub dirty properties, pattern reproducibility and physical and chemical resistance of the resulting printed matter have not been reported

Method used

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  • Water-scraped without set-off intaglio ink
  • Water-scraped without set-off intaglio ink
  • Water-scraped without set-off intaglio ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A1

[0055] 10.1 parts of tower oil fatty acid, 6.8 parts of linoleic acid, 7.8 parts of glycerin, 3.4 parts of pentaerythritol, 5.7 parts of phthalic anhydride and an appropriate amount of xylene are heated up to 200 ° C under the protection of nitrogen, and the temperature is kept Esterification, measuring the acid value of the system during the reaction, and cooling down when the acid value reaches 4, to obtain an ortho-phenyl alkyd resin with an oil degree of 55%. Take a total of 32 parts of the above resin, add 45 parts of dodecane solvent, 10 parts of dipropylene glycol dimethyl ether solvent and heat up to about 80°C, add 7 parts of toluene diisocyanate (TDI) dropwise and keep it warm for 2 hours until the viscoelastic ratio is 4. Add 0.05 parts of dibutyltin dilaurate and 0.5 parts of methanol, keep warm for 1 hour, use about 4-5 parts of solvent to adjust the product to a viscosity of 12Pa.S / 40℃, and a viscoelastic ratio of 6. That is, the vehicle component A1 is obtained....

Embodiment A2-A11

[0057] The preparation method is the same as in Example 1, and the reaction materials and dosage ratios are shown in Table 1.

[0058] Table 1

[0059] serial number

[0060] Dibutyltin dilaurate

[0061] Cobalt naphthenate

[0062] Preparation of vehicle component B

Embodiment B1

[0064]Add 30 parts of tung oil, 25 parts of flax oil, 10 parts of glycerin, and 4 parts of pentaerythritol into the reaction kettle. When the temperature reaches 160°C, add 0.05 parts of catalyst lithium hydroxide, and the transesterification reaction occurs at 240°C under the protection of nitrogen. After the alcoholysis is qualified (reaction product: 95% ethanol = 1:5, the solution is clear and transparent), add 25 parts of isophthalic acid, 0.02 parts of catalyst zinc oxide and an appropriate amount of methyl isobutyl ketone as a medium solvent, and keep warm at 230 ° C. Stop the reaction when the acid value reaches 15, and adjust the viscosity to 6.2 Pa.S / 40°C with dodecane solvent (about 6 parts) to obtain m-benzene alkyd resin B1 with an oil degree of 62%.

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Abstract

The invention provides an improved water-washing non-smearing curved gravure ink and a preparation method thereof. The components of the improved water-washing non-smearing curved gravure ink are as follows: 20 to 70 percent of linking marerials, 8 to 50 percent of dye, 1 to 8 percent of solvent, 2 to 28 percent of nanometer padding, 0 to 3 percent of driers, 2 to 12 percent of wax, 1 to 7 percent of surface active agents, 0 to 8 percent of directional agents as well as 0 to 5 percent of adhesion promoter; wherein, the acid value of linking marerials is 10 to 30mgKOH / g and the viscosity is 4 to 16Pa.S / 40DEG C. The aspects of the printability, the color characteristics of a printed product and the stability of the ink of the water-washing non-smearing curved gravure ink obtained by the invention by using a low-acid value linking material composite and the corresponding padding and addition agents are effectively improved, the anti-fake level of the printed product can be improved in particular. The improved water-washing non-smearing curved gravure ink can be a water-washing non-smearing curved gravure metal ink, a water-washing non-smearing curved gravure effective ink or a water-washing non-smearing curved gravure anti-fake ink.

Description

technical field [0001] The invention relates to an engraving gravure printing ink with improved performance and no smudging due to water wiping and a preparation method thereof, belonging to the technical field of printing. Background technique [0002] In order to deal with counterfeiters, some advanced anti-counterfeiting technologies are applied to banknotes, which greatly improves the anti-counterfeiting level of banknotes. However, out of personal interests, counterfeiters still forge banknotes by various means to disrupt the financial order. Therefore, effectively improving the public anti-counterfeiting features of banknotes has become a research hotspot in the field of banknote printing. The engraving gravure printing process is an important and unique anti-counterfeiting process adopted in the field of anti-counterfeiting printing, including the banknote printing industry. The engraving gravure printing is characterized by clear lines and strong concave and convex....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/10B41M1/10C09D11/103C09D11/105
Inventor 周树荣吕建英
Owner CHINA BANKNOTE PRINTING & MINTING