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Production method for violet offset ink

A technology for offset printing ink and production method, which is applied in the directions of ink, household appliances, application, etc., can solve the problems of poor wetting effect of permanent violet pigment, difficult dispersion of permanent violet pigment, large surface tension of connecting material, etc., to simplify the production method. Procedural, easy to obtain, particle size controllable effect

Active Publication Date: 2016-03-30
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

The traditional production method of purple offset printing ink is the "dry mixing method", that is, the dry permanent violet pigment is directly mixed with the binder. However, due to the high surface tension of the binder, it is difficult to enter the void of the permanent violet pigment, which often causes The wetting effect of permanent violet pigment is poor, making it difficult to disperse permanent violet pigment to the required fineness
Therefore, in the traditional production method of purple offset printing ink, the number of times of grinding is large and time-consuming, which seriously affects the efficiency of production and has become a bottleneck in the production of ink

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A production method of purple offset printing ink, it comprises the following steps:

[0035] Step 1, wetting: Put permanent violet and water into a stirring tank and stir to make a mixture; in this example, the weight ratio of permanent violet to water is 1:1; in this example, the water used is soft water; Among them, soft water hardness is 40mg / L;

[0036] Step 2, replacement: Mix varnish, vegetable oil and mineral oil evenly to prepare the connecting material, and add the mixture prepared in step 1 to the connecting material under slow stirring conditions, so that the mixture and the connecting material are mixed evenly, and then in the Under the condition of high-speed stirring, the varnish in the binder is replaced with the water in the wet permanent violet to obtain the second mixture; in this embodiment, the weight ratio of varnish, vegetable oil and mineral oil is 50:2:1 ; In this example, the weight ratio of the connecting material, permanent violet and water ...

Embodiment 2

[0040] A production method of purple offset printing ink, it comprises the following steps:

[0041] Step 1, wetting: put permanent violet and water into a stirring tank and stir to make a mixture; in this example, the weight ratio of permanent violet to water is 1:1; in this example, the water used is hard water; Among them, the hardness of hard water is 120mg / L;

[0042] Step 2, replacement: Mix varnish, vegetable oil and mineral oil evenly to prepare the connecting material, and add the mixture prepared in step 1 to the connecting material under slow stirring conditions, so that the mixture and the connecting material are mixed evenly, and then in the Under the condition of high-speed stirring, the varnish in the binder is replaced with the water in the wet permanent violet to obtain the second mixture; in this embodiment, the weight ratio of varnish, vegetable oil and mineral oil is 50:2:1 ; In this embodiment, the weight ratio of the connecting material, permanent violet...

Embodiment 3

[0046] A production method of purple offset printing ink, it comprises the following steps:

[0047] Step 1, wetting: put permanent violet and water into a stirring tank and stir to make a mixture; in this example, the weight ratio of permanent violet to water is 2:1; in this example, the water used is hard water; Among them, the hardness of hard water is 120mg / L;

[0048]Step 2, replacement: Mix varnish, vegetable oil and mineral oil evenly to prepare the connecting material, and add the mixture prepared in step 1 to the connecting material under slow stirring conditions, so that the mixture and the connecting material are mixed evenly, and then in the Under the condition of high-speed stirring, the varnish in the binder is replaced with the water in the wet permanent violet to obtain the second mixture; in this embodiment, the weight ratio of varnish, vegetable oil and mineral oil is 50:3:1 ; In this embodiment, the weight ratio of the binder, permanent violet and water is ...

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Abstract

The invention relates to the technical field of printing ink, in particular to a production method for violet offset ink. The production method comprises the following steps: 1, wetting; 2, displacing; 3, dehydrating; 4, thinning; 5, filling; 6, adjusting viscosity. According to the production method, a permanent violet pigment is wet through water to reduce the surface tension of the pigment, so as to realize a better wetting effect. In addition, through the better wetting effect, the dispersion of the pigment in a binder can be improved, and the milling time of the violet offset ink is greatly shortened. In the production method, tap water is used as a pigment wetting agent, compared with a method adopting soft water, the acquired effects are the same, while tap water is easy to obtain and low in cost, so that the production cost is reduced by using the tap water as the wetting agent. The production method has the characteristics of being simple to operate, low in cost and high in production efficiency.

Description

technical field [0001] The invention relates to the technical field of ink, in particular to a production method of purple offset printing ink. Background technique [0002] Since permanent violet has outstanding tinting strength and brightness, excellent heat resistance, permeation resistance and light fastness, the current production process of purple offset printing ink generally uses permanent violet as ink pigment. At present, the particle size of pigments on the market is generally between 250 μm and 750 μm, but the particle size of the pigment needs to reach 5 nm to 1 μm to easily form a dispersion. Therefore, the pigment needs to be further dispersed during use. The traditional production method of purple offset printing ink is the "dry mixing method", that is, the dry permanent violet pigment is directly mixed with the binder. However, due to the high surface tension of the binder, it is difficult to enter the void of the permanent violet pigment, which often cause...

Claims

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Application Information

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IPC IPC(8): C09D11/06C09D11/037C09D11/03
CPCC09D11/03C09D11/037C09D11/06
Inventor 朱燕兴永沼孝介吴国蓬
Owner 茂名阪田油墨有限公司
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