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Method for preparing flexography water-based ink for plastic film

A water-based ink and flexographic printing technology, which is applied in ink, applications, household appliances, etc., can solve the problems of water-based inks such as low adhesion, small solubility parameters, and insufficient adhesion fastness, and achieve strong affinity, good compatibility, Effect of increasing adhesion and adhesion fastness

Inactive Publication Date: 2019-06-28
郑州知淘信息科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Non-absorbing media such as plastic films play a pivotal role in the packaging and printing industry. Currently, polyolefin films are the most widely used. Due to factors such as molecular structure, polar groups, and degree of crystallization, plastic films have low surface energy and low solubility parameters. Small, smooth surface, easy to generate static electricity, and the surface tension of water is large, the adhesion of water-based ink on the surface of plastic film is small, the adhesion fastness is not enough, the spreading is uneven, the covering rate is low, the drying speed is slow, and the printing effect is not good. Limiting the rapid development of flexographic printing water-based inks in the plastic film packaging industry

Method used

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  • Method for preparing flexography water-based ink for plastic film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The flexographic printing water-based ink for plastic film of the present embodiment is made up of the component of following mass percent: water-based acrylate emulsion 45%, water-based dicyclopentadiene acrylate emulsion 12%, pigment 17%, defoamer 0.5%, 0.9% dispersant, 0.7% substrate wetting agent, 0.8% leveling agent, 0.8% fumed silicon dioxide, the balance is water and pH stabilizer triethanolamine, and the pH value of the water-based ink is 8.5-9.0.

[0034] The preparation method of the flexographic printing water-based ink for the plastic film of the present embodiment may further comprise the steps:

[0035] 1) Preparation of water-based acrylate emulsion:

[0036] Take the monomer raw materials methyl methacrylate, butyl acrylate, acrylic acid, and hydroxypropyl acrylate and mix them uniformly according to the ratio of 25:13:1.5:0.5 by mass to obtain a monomer mixture;

[0037] Add 1 / 10 monomer mixture, first emulsifier and buffer sodium bicarbonate into wate...

Embodiment 2

[0045] The flexographic printing water-based ink for plastic films of the present embodiment is composed of the following components in mass percentage: 48% of water-based acrylate emulsion, 10% of water-based dicyclopentadiene acrylate emulsion, 17% of pigment, 0.6% of defoamer, Dispersant 1.0%, substrate wetting agent 0.6%, leveling agent 0.6%, fumed silicon dioxide 0.9%, the balance is water and pH stabilizer triethanolamine, and the pH value of the water-based ink is 8.5-9.0.

[0046] The preparation method of the flexographic printing water-based ink for the plastic film of the present embodiment may further comprise the steps:

[0047] 1) Preparation of water-based acrylate emulsion:

[0048] Take monomer raw materials methyl methacrylate, butyl acrylate, acrylic acid, and hydroxypropyl acrylate and mix them uniformly according to the ratio of 25:13.5:1.7:0.8 in mass ratio to obtain a monomer mixture;

[0049] Add 1 / 10 monomer mixture, first emulsifier and buffer sodium...

Embodiment 3

[0057] The flexographic printing water-based ink for plastic film of the present embodiment is made up of the component of following mass percent: water-based acrylate emulsion 46%, water-based dicyclopentadiene acrylate emulsion 11%, pigment 17%, defoamer 0.7%, 0.8% dispersant, 0.8% substrate wetting agent, 0.5% leveling agent, 1.0% fumed silicon dioxide, the balance is water and pH stabilizer triethanolamine, and the pH value of the water-based ink is 8.5-9.0.

[0058] The preparation method of the flexographic printing water-based ink for the plastic film of the present embodiment may further comprise the steps:

[0059] 1) Preparation of water-based acrylate emulsion:

[0060] Take the monomer raw materials methyl methacrylate, butyl acrylate, acrylic acid, and hydroxypropyl acrylate and mix them uniformly according to the ratio of 25:14:2.0:1.0 by mass to obtain a monomer mixture;

[0061] Add 1 / 10 monomer mixture, first emulsifier and buffer sodium bicarbonate into wate...

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Abstract

The invention relates to a method for preparing flexography water-based ink for a plastic film. The method comprises the following steps: (1) preparing a water-based acrylate emulsion by emulsion polymerization; (2) adding dicyclopentadiene acrylic acid ester resin, hydroxyethyl cellulose, emulsifier and isopropanol into water to prepare a water-based dicyclopentadiene acrylic acid ester emulsion;and (3) preparing color paste from the water-based dicyclopentadiene acrylic acid ester emulsion with pigment, dispersant, a defoaming agent and part of water, and adding the color paste, water-basedacrylate emulsion, a base material wetting agent, a flatting agent and gaseous silicon dioxide into the remained water, and mixing. The water-based ink is excellent in basic performance, can meet theusing requirement of flexography, has strong printing adhesion and high adhering firmness on a plastic film, especially a polyolefin film, has high ink film strength and no water mark phenomenon, hasexcellent dry / wet friction resistance, rubbing resistance and scratch resistance, has high printing quality, and is suitable for package printing by using a plastic film as a printing stock.

Description

technical field [0001] The invention belongs to the technical field of water-based inks, and in particular relates to a preparation method of flexographic printing water-based inks for plastic films. Background technique [0002] With the rapid development of industry and the substantial improvement of living standards, people pay more and more attention to environmental protection and green safety. The VOCs emissions in the packaging and printing industry are increasing year by year, which has gradually attracted people's attention; the traditional packaging and printing industry is facing transformation pressure. Under the guidance of the concept of "green printing", flexographic printing technology and water-based ink have been developed. [0003] Water-based ink is an environmentally friendly printing ink made of water as the main body, water-based polymer compound as the binder, and pigments and additives through design, blending, grinding and stirring. Compared with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/107C09D11/03C08F220/14C08F220/18C08F220/06C08F220/20C08F2/30
Inventor 魏晓峰
Owner 郑州知淘信息科技有限责任公司
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