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Preparation method of black basic ink for manufacturing planographic printing ink

A lithographic ink and black technology, applied in the field of preparation of black base ink, can solve the problems of poor abrasiveness of black base ink, long production time, low production efficiency, etc., and achieves reduction of times, improvement of production efficiency and good dispersion performance. Effect

Active Publication Date: 2014-12-17
茂名阪田油墨有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the improper conditions of the kneading machine, the fineness of the black base ink produced will also vary greatly. If the fineness of the produced black base ink is poor, it is necessary to increase the number of grinding times when entering the next grinding process In order to control the fineness of the black base ink within the qualified range, and when the black base ink is produced, the black base ink will be softened if the temperature is too high. Kneading is carried out in a soft state of the black base ink. The abrasiveness of the base ink becomes poor, which leads to the need to increase the number of grindings to control the fineness of the base ink within the acceptable range, resulting in long production time, high cost and low production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method for producing a black base ink of lithographic ink, comprising the following preparation steps:

[0041] Step 1) Add 20% acid carbon black to the kneader equipped with 150% deionized water while stirring, the stirring time is 30min, and the kneading temperature is 60°C;

[0042] Step 2) Add 25% of the binder, continue to stir and mix, the stirring time is 20min, and the temperature is 60°C;

[0043] Step 3) Replacement dehydration, kneading and stirring to separate the oil and water, then tilt the kneader to pour out the upper layer of water;

[0044] Step 4) Vacuuming, the vacuuming temperature is 60°C, the time is 60 minutes, the vacuum degree is 0.1MPa, and the residual moisture is further squeezed out;

[0045] Step 5) Add 40% of the binder and 2% vegetable oil described in step 2), and fully stir and mix for 25 minutes at a temperature of 60°C to obtain a mixture;

[0046] Step 6) Put the mixture obtained in step 5) into a three-roll machine ...

Embodiment 2

[0048] A preparation method for producing a black base ink of lithographic ink, comprising the following preparation steps:

[0049] Step 1) Add 25% acid carbon black to the kneader with 300% deionized water while stirring, the stirring time is 35min, and the kneading temperature is 58°C;

[0050] Step 2) Add 20% of the binder, continue to stir and mix, the stirring time is 30min, and the temperature is 58°C;

[0051] Step 3) Replacement dehydration, kneading and stirring to separate the oil and water, then tilt the kneader to pour out the upper layer of water;

[0052] Step 4) Vacuuming, the vacuuming temperature is 58°C, the time is 85 minutes, the vacuum degree is 0.06MPa, and the residual moisture is further squeezed out;

[0053] Step 5) Add 45% of the binder and 3% vegetable oil described in step 2), and fully stir and mix for 20 minutes at a temperature of 58°C to obtain a mixture;

[0054] Step 6) Put the mixture obtained in step 5) into a three-roll machine for grin...

Embodiment 3

[0056] A preparation method for producing a black base ink of lithographic ink, comprising the following preparation steps:

[0057]Step 1) Add 30% acid carbon black to the kneader equipped with 350% deionized water while stirring, the stirring time is 40min, and the kneading temperature is 55°C;

[0058] Step 2) Add 30% of the binder, continue to stir and mix, the stirring time is 25min, and the temperature is 55°C;

[0059] Step 3) Replacement dehydration, kneading and stirring to separate the oil and water, then tilt the kneader to pour out the upper layer of water;

[0060] Step 4) Vacuum the kneader, the vacuum temperature is 55°C, the time is 70 min, the vacuum degree is 0.08MPa, and the residual moisture is further extruded;

[0061] Step 5) Add 50% of the binder and 5% vegetable oil described in step 2), and fully stir and mix for 30 minutes at a temperature of 58°C to obtain a mixture;

[0062] Step 6) Put the mixture obtained in step 5) into a three-roll machine fo...

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PUM

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Abstract

The invention relates to the technical field of planographic printing inks, in particular to a preparation method of a black basic ink for manufacturing a planographic printing ink. The preparation method comprises the following steps: carrying out kneading reaction of 100-400% of deionized water and 20-30% of acidic carbon black, wherein the deionized water is used as a wetting agent. Compared with the prior art, the preparation method provided by the invention has the advantages as follows: the temperature of a kneading machine is controlled at 55-60 DEGC to manufacture the black basic ink; through adjusting the kneading temperature, the softness of the black basic ink is controlled; under the condition with the kneading temperature of 55-60 DEG C, the manufactured black basic ink is good in dispersing performance; the number of grinding procedures can be effectively reduced; and moreover, load born by the kneading machine within a normal range is ensured, the production efficiency is further increased and a good market prospect is obtained.

Description

technical field [0001] The invention relates to the technical field of lithographic inks, in particular to a method for preparing black base ink for producing lithographic inks. Background technique [0002] In the prior art, the production of black base ink of lithographic ink needs to disperse carbon black in the binder to improve the fluidity and color rendering effect of carbon black. Usually, carbon black is treated with ozone or chemical reagents on the surface of carbon black. Oxidation-treated acidic carbon black, in order to solve the problem that acidic carbon black is difficult to disperse, Chinese invention patent CN101146879B discloses a kind of manufacturing method of ink composition for offset printing, in its technical scheme, add wetting agent in acidic carbon black, with To improve the dispersibility, a kneader is used in the production process to produce the black base ink. During the kneading process, the stirring blade of the kneader grinds the black bas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/103C09D11/105C09D11/102C09D11/06C09D11/037C09D11/03C09D11/10
Inventor 吴国蓬建入实荒木隆史
Owner 茂名阪田油墨有限公司