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Environment-friendly printing technology for printing ink

A technology of ink printing and crafting, which is applied in the direction of ink, household utensils, applications, etc., can solve the problems of ink adhesion decline, ink curing slowdown, unfavorable environmental protection, etc., and achieve good adhesion, fast film forming speed, and printing effect Good results

Inactive Publication Date: 2018-04-24
SUZHOU TONGLI PRINTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At this stage, the inks used in the printing process of packaging boxes are mostly solvent-based inks, including chlorinated polypropylene inks, polyurethane inks, and polyacrylate inks. These inks contain a large amount of harmful solvents such as toluene and benzene, or are harmful to Other organic solvents with a large environmental burden are not conducive to environmental protection
Although water-based inks in the prior art use water as the main solvent to reduce environmental pollution, this type of ink is often at the expense of sacrificing the practicability of the ink, such as decreased adhesion of the ink, slowed ink curing, or requires a higher The curing temperature, etc., the applicability is reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Use the commonly used A4 paper with good water absorption as the base material, and use the following steps to print:

[0034] S10, using ink to print on the base material to form a printed matter, during printing, the nozzle of the inkjet printing machine does not contact the base material. The ink used during printing is composed of the following components in parts by weight: 60 parts of water, 30 parts of latex binder, 2 parts of 2-pyrrolidone, 1 part of benzyl methacrylate, 10 parts of ethanol, and 1.5 parts of citric acid , 1.0 parts of colorant.

[0035] Wherein, the latex binder is a mixture of acrylic latex binder and polyurethane resin, and the weight ratio of the two is 1:1. The acid value of the latex binder is 6 mg KOH / g, the acid value of the polyurethane resin is 0 mg KOH / g, and the molecular weight is 8000. The average diameter of the latex binder is 20nm

[0036] S20, using an infrared light source to irradiate the printed matter with a temperature o...

Embodiment 2

[0038] Use the commonly used A4 paper with good water absorption as the base material, and use the following steps to print:

[0039] S10, using ink to print on the base material to form a printed matter, during printing, the nozzle of the inkjet printing machine does not contact the base material. The ink used during printing is composed of the following components in parts by weight: 70 parts of water, 8 parts of latex binder, 5 parts of 2-pyrrolidone, 3 parts of benzyl methacrylate, 16 parts of ethanol, and 5 parts of citric acid , 5 parts of colorant.

[0040] Wherein, the latex binder is a mixture of acrylic latex binder and polyurethane resin. The acid value of the acrylic latex binder is 10 mg KOH / g, the acid value of the polyurethane resin is 1 mg KOH / g, and the molecular weight is 200,000. The average diameter of the latex binder is 45nm

[0041] S20, using an infrared light source to irradiate the printed matter with a temperature of 60° C. and an irradiating time...

Embodiment 3

[0043] S10, using an inkjet printer to print the ink on the polypropylene substrate to form a printed matter, during printing, the nozzle of the inkjet printer does not contact the polypropylene substrate. The ink used during printing is composed of the following components in parts by weight: 65 parts of water, 4 parts of latex binder, 3 parts of 2-pyrrolidone, 2 parts of benzyl methacrylate, 12 parts of ethanol, and 3 parts of citric acid , 3 parts of coloring agent.

[0044] Wherein, the latex binder is a mixture of acrylic latex binder and polyurethane resin. The acid value of the acrylic latex binder is 10 mg KOH / g, the acid value of the polyurethane resin is 1 mg KOH / g, and the molecular weight is 100,000. The average diameter of the latex binder is 30nm

[0045] S20, using an infrared light source to irradiate the printed matter with a temperature of 60° C. and an irradiating time of 90 s, and the ink is formed into a film.

[0046] The substrate printing result of e...

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Abstract

The invention discloses an environment-friendly printing technology for printing ink. The environment-friendly printing technology includes steps of S10, printing the printing ink on base materials toform printed matters; S20, irradiating infrared light sources on the printed matters until films are formed by the printing ink. The printing ink comprises, by weight, 60-70 parts of water, 3-10 parts of latex binders, 1-5 parts of 2-pyrrolidinone, 1-3 parts of benzyl methacrylate, 10-20 parts of ethyl alcohol, 1-5 parts of citric acid and 0.5-6 parts of colorants. The environment-friendly printing technology in an embodiment of the invention has the advantages that the environment-friendly printing technology includes the simple technological steps, the water is used as a main solvent for the printing ink, solvents, such as benzene with severe pollution on environments and human bodies, in the printing ink are reduced to a great extent, and accordingly the environment-friendly printing technology is green and environmentally friendly; the printing ink is good in adhesion, low in film-forming temperature and high in film-forming speed, good printing effects can be realized, and the environment-friendly printing technology can adapt to printing diversified packaging boxes and is wide in adaptability.

Description

technical field [0001] The invention relates to the field of printing, in particular to an environmentally friendly ink printing process. Background technique [0002] At this stage, the inks used in the printing process of packaging boxes are mostly solvent-based inks, including chlorinated polypropylene inks, polyurethane inks, and polyacrylate inks. These inks contain a large amount of harmful solvents such as toluene and benzene, or are harmful to Other organic solvents with a large environmental burden are not conducive to environmental protection. Although water-based inks in the prior art use water as the main solvent to reduce environmental pollution, this type of ink is often at the expense of sacrificing the practicability of the ink, such as decreased adhesion of the ink, slowed ink curing, or requires a higher The curing temperature, etc., the applicability is reduced. Contents of the invention [0003] The present invention aims at solving at least one defec...

Claims

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Application Information

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IPC IPC(8): C09D11/30C09D11/38
CPCC09D11/30C09D11/38
Inventor 黄清华庞福明
Owner SUZHOU TONGLI PRINTING TECH
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