Method for preparing food packaging water-based ink

A water-based technology for food packaging, applied in the field of preparation of water-based inks for food packaging, can solve the problems of film forming, low flexibility, poor overall performance, poor adhesion to substrates, etc. Excellent substrate adhesion, gloss and film-forming properties

Inactive Publication Date: 2018-02-09
安徽同利塑胶彩印有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although there are more and more applications in the field of food packaging and printing, the current water-based inks still have disadvantages such as difficulty in adapting to various substrates such as paper and polyethylene film, poor substrate adhesion, and poor gloss. The flexibility is low, the folding resistance after printing on the surface of the packaging material is not good, and the overall performance is not good, which limits its popularization and use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of water-based ink for food packaging, comprising the following steps:

[0018] (1) Adding 0.05 parts by weight of chitosan into 10 parts by weight of acetic acid solution with a mass fraction of 1% is fully dissolved, then adding 5 parts by weight of natural rubber latex with a solid content of 40% and mixing evenly, then adding 0.3 parts by weight of twelve Sodium alkyl sulfate and 1 part by weight of methyl methacrylate were stirred evenly, and finally 0.01 part by weight of potassium persulfate was added and stirred at 60°C for 2 hours to obtain a composite emulsion;

[0019] (2) 20 parts by weight of the average molecular weight of water-soluble acrylic resin, 5 parts by weight of white carbon black, 10 parts by weight of pigment, 10 parts by weight of water and the composite emulsion obtained in step (1) are mixed at a high speed of 1000r / min Stir and disperse evenly for 0.5 hours, then add it to a ball mill for ball milling until the fineness...

Embodiment 2

[0021] A preparation method of water-based ink for food packaging, comprising the following steps:

[0022] (1) Adding 0.1 parts by weight of chitosan to 15 parts by weight of mass fraction is fully dissolved in 2% acetic acid solution, then adding 10 parts by weight of natural rubber latex with a solid content of 60% and mixing evenly, then adding 0.5 parts by weight of Tween -80. Stir 2 parts by weight of methyl methacrylate evenly, and finally add 0.015 parts by weight of ammonium persulfate and stir at 70°C for 4 hours to obtain a composite emulsion;

[0023] (2) 30 parts by weight of the average molecular weight of the water-soluble acrylic resin, 10 parts by weight of white carbon black, 20 parts by weight of pigment, 20 parts by weight of water and the composite emulsion obtained in step (1) are mixed at a high speed of 1500r / min Stir and disperse evenly for 1 hour, then add it to a ball mill for ball milling until the fineness is ≤25um, and finally add 0.2 parts by wei...

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PUM

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Abstract

The invention relates to a method for preparing food packaging water-based ink. The method includes uniformly mixing acetic acid solution with chitosan and natural latex with each other to obtain first mixtures; adding methyl methacrylate and initiators into the first mixtures and carrying out solution polymerization reaction; grafting the methyl methacrylate on the chitosan and the natural latex;mixing obtained composite emulsion, water-soluble acrylic acid resin, pigment and the like with one another to obtain second mixtures, dispersing the second mixtures at the high speeds and then carrying out uniform ball-milling to obtain the food packaging water-based ink. The method has the advantages that the food packaging water-based ink prepared by the aid of the method is excellent in basematerial adhesion performance and glossiness, good in film forming property and high in flexibility, is high in folding resistance after being printed and is suitable to be used on the surfaces of diversified base materials.

Description

technical field [0001] The invention belongs to the technical field of water-based ink, and in particular relates to a preparation method of water-based ink for food packaging. Background technique [0002] With the continuous enhancement of people's awareness of environmental protection, many countries have increased many hygiene and environmental protection requirements and constraints in packaging and printing. Water-based ink is currently recognized as the most environmentally friendly ink in the world. It is mainly made of water-soluble resins, organic pigments, solvents and related additives through compound grinding. It is non-toxic, tasteless, and can be decomposed naturally. , food, beverage, medicine and other packaging and printing products that require strict hygienic conditions. In addition, water-based inks can also reduce safety hazards such as fires caused by static electricity and organic solvents. At present, in the field of food packaging, the use of wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/107C09D11/03
CPCC09D11/03C09D11/107
Inventor 李琳朱宏文
Owner 安徽同利塑胶彩印有限公司
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