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A kind of alcohol-soluble flexographic printing ink
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A flexographic printing, alcohol-soluble technology, applied in the field of ink, can solve the problems of easy ink sticking, easy sticking plate, flexible rubber plate corrosion, etc., achieve good printing suitability, overcome easy plate sticking, and facilitate production and operation
Active Publication Date: 2016-04-13
HUANGSHAN SHINING INK TECH
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Problems solved by technology
Due to the characteristics of the resin itself, the ink prepared by the solvent-based polyamide resin system determines some problems such as easy sticking to the plate in printing; printing is easy to stick ink when placed under high temperature, high humidity and certain pressure; and poor heat resistance in post-processing, etc. Defects, easy to bring inconvenience and quality hidden dangers to production and post-processing
Moreover, the flexographic printing plate has high requirements on the solvent system of the ink, and the high content of ester solvent will cause corrosion to the flexible rubber plate, but the resin in the formula system cannot be completely dissolved if no ester solvent is used. posed great difficulty
The tolerance of the best printing plates on the market to ester solvents is only 20-30%.
Method used
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Embodiment 1
[0036] 1. First prepare 30% alcohol-soluble dispersion resin liquid and alcohol-soluble modified rosin resin respectively.
[0037] The 30% alcohol-soluble dispersion resin liquid is made by dissolving cellulose resin solids in ethanol and ethyl acetate, wherein the weight percentage of ethyl acetate is 20%, the weight percentage of ethanol is 50%, and the weight percentage of cellulose solids is 30%;
[0038] The alcohol-soluble modified rosin resin is made by dissolving rosin resin solids in ethyl acetate and n-propanol, wherein the weight percentage of ethyl acetate is 30%, the weight percentage of n-propanol is 20%, and the weight percentage of rosin resin solids 50%.
[0039] 2. Then, prepare alcohol-soluble flexographic printing ink according to the following formula system.
[0040]
[0041]
[0042] Among them, the additives include dispersants, environmentally friendly plasticizers, defoamers and antistatic agents, and the ratio of use is dispersant: environmen...
Embodiment 2
[0049] 1. Prepare 30% alcohol-soluble dispersion resin liquid and alcohol-soluble modified rosin resin, the same as in Example 1.
[0050] 2. Then, prepare alcohol-soluble flexographic printing ink according to the following formula system.
[0051]
[0052] Among them, the additives include dispersants, environmentally friendly plasticizers, defoamers and antistatic agents, and the ratio of use is dispersant: environmentally friendly plasticizer: defoamer: antistatic agent = 2:2:1: 1.
[0053] 3. The preparation method adopted in the above formula system is the same as in Example 1.
Embodiment 3
[0055] 1. Prepare 30% alcohol-soluble dispersion resin liquid and alcohol-soluble modified rosin resin, the same as in Example 1.
[0056] 2. Then, prepare alcohol-soluble flexographic printing ink according to the following formula system.
[0057]
[0058] Among them, the additives include dispersants, environmentally friendly plasticizers, defoamers and antistatic agents, and the ratio of use is dispersant: environmentally friendly plasticizer: defoamer: antistatic agent = 2:2:1: 1.
[0059] 3. The preparation method adopted in the above formula system is the same as in Example 1.
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Abstract
The invention provides alcohol-soluble type flexograhic printing ink. The alcohol-soluble type flexograhic printing ink comprises the following raw material components: 30% alcohol-soluble type dispersion resin solution, alcohol-soluble type plasticizing polyurethane, alcohol-soluble type modified rosin resin, pigment, polyethylene wax, auxiliaries, glycol ether, alcohol and normal propyl alcohol. According to the alcohol-soluble type flexograhic printing ink, a formula system combining the 30% alcohol-soluble type dispersion resin solution, the alcohol-soluble type plasticizing polyurethane and the alcohol-soluble type modified rosin resin is adopted, so that defects that stickiness is easily caused in printing, printed maters easily stick ink after being placed at high temperature, high humidity and certain pressure, and heat resistance is poor in post processing in the prior art are solved.
Description
technical field [0001] The invention relates to an ink, in particular to an alcohol-soluble flexographic printing ink. Background technique [0002] Most of the flexographic printing inks currently on the market are water-based printing inks based on acrylic resin systems and solvent-based inks based on polyamide resin systems. The ink prepared by the acrylic resin system is mainly used in porous substrates such as kraft paper, corrugated paper and other permeable substrates. Printing on non-porous substrates is still dominated by solvent-based inks. Due to the characteristics of the resin itself, the ink prepared by the solvent-based polyamide resin system determines some problems such as easy sticking to the plate in printing; printing is easy to stick ink when placed under high temperature, high humidity and certain pressure; and poor heat resistance in post-processing, etc. Defects can easily bring inconvenience and quality hidden dangers to production and post-process...
Claims
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Application Information
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