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Waterborne over-printing varnish for environment-friendly paper

A varnish, water-based technology, used in papermaking, paper coating, textiles and papermaking, etc.

Inactive Publication Date: 2013-07-10
福建省利得彩环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if it highlights the technical requirements of meeting environmental protection requirements and water resistance, wet friction resistance, faster drying, and greater gloss for varnishes, it is reflected in product formulations and manufacturing processes such as main film-forming substances and auxiliary film-forming substances. There is still room for continuous improvement and perfection in a series of technical measures such as drying speed and how to properly use additives with significant effects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and 2

[0050] Add self-crosslinking type acrylic polymer emulsion (A), non-film-forming acrylic polymer emulsion (B), and styrene-acrylate copolymer emulsion (C) in the stainless steel or enamel container according to the ratio in Table 2. , placed under the high-speed mixer to start slow stirring, slowly increase the stirring speed to 600 rpm, after stirring for 20 minutes, add viscosity stabilizer propylene glycol, anti-friction agent polyethylene wax emulsion, pH value stabilizer monoethanolamine, water-based Silicone nano-water repellent (DS) and environment-friendly fungicide, stir and mix for 30 minutes, then add water-based defoamer as the case may be, and continue stirring for 10 minutes.

[0051] Sampling test indicators, after passing the filter with silk screen packaging.

[0052] The technical indicators are as follows:

[0053] Coating 4# Viscosity Cup Viscosity 30-60 seconds / 25°C;

[0054] Initial dryness 20~35mm / 25℃;

[0055] Thorough dryness 30~50 seconds / 50μm·25℃;...

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Abstract

The invention provides a waterborne over-printing varnish for environment-friendly paper. The waterborne over-printing varnish comprises raw material components: self-crosslinking type acrylic polymer emulsion (A), non-film-forming acrylic polymer emulsion (B), styrene-acrylate copolymer emulsion (C), a waterborne nano organic silica waterproof agent (D) and other commonly-used auxiliaries. The waterborne over-printing varnish for environment-friendly paper emphasizes the environment-friendliness characteristics, can be used for a flexographic plate printing press, a photogravure plate printing press, and a roller coating machine to print or coat paper products with the over-printing varnish. After being printed on the paper, the over-printing varnish can be naturally dried, the dried coating is both bright and waterproof, and the moisture friction resistance can achieve the satisfying effect.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a varnish, and more particularly to a water-based varnish for paper. Background technique [0002] Compared with ordinary paper varnishes, water-based waterproof varnishes for environmentally friendly papers have excellent water resistance. Water droplets have a "lotus leaf effect" on the dry varnish surface, with greater gloss and good wet friction resistance. . It is mainly used for packaging and decoration printing, which plays an inestimable role in beautifying and improving the level of packaging and decoration and increasing the value of commodities. However, traditional varnishes are mostly solvent-based. This type of product not only pollutes the air because it contains a large amount of organic solvents, but most of the solvents are harmful to the human body. Although ultraviolet curing varnish has good environmental performance, it must be dried under ultraviolet light, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D125/14C09D7/12D21H19/20
Inventor 魏龙亮凌云星丁孝君
Owner 福建省利得彩环保科技有限公司
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