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A gravure printing water-based polyurethane ink

A water-based polyurethane and gravure printing technology, which can be used in inks, household utensils, applications, etc., and can solve problems such as low adhesion, large volatilization of organic solvents, and environmental pollution.

Active Publication Date: 2022-05-24
ZHEJIANG HUABAO INK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems that the existing solvent-based gravure printing ink has a large amount of organic solvent volatilization, which is harmful to the human body and pollutes the environment, and the existing alcohol-water system water-based polyurethane ink has poor adhesion, etc., the present invention provides a Water-based polyurethane ink for gravure printing

Method used

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  • A gravure printing water-based polyurethane ink
  • A gravure printing water-based polyurethane ink
  • A gravure printing water-based polyurethane ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A kind of gravure printing water-based polyurethane ink, its component ratio and acrylic emulsion hydroxyl value are shown in the following table:

[0053]

[0054] After calculation, the Hv of the three-component binder used in the ink of this example r The value is 1.15.

Embodiment 2

[0056] A kind of gravure printing water-based polyurethane ink, its component ratio and acrylic emulsion hydroxyl value are shown in the following table:

[0057]

[0058] After calculation, the Hv of the three-component binder used in the ink of this example r The value is 1.04.

Embodiment 3

[0060] A kind of gravure printing water-based polyurethane ink, its component ratio and acrylic emulsion hydroxyl value are shown in the following table:

[0061]

[0062]

[0063] After calculation, the Hv of the three-component binder used in the ink of this example r The value is 0.98.

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Abstract

The invention belongs to the field of inks, in particular to a gravure printing water-based polyurethane ink. The ink includes: three-component binder 16-21wt%, pigment 11-26wt%, functional additive 0-5wt%, and the balance is water; the three-component binder includes acrylic emulsion A, acrylic emulsion B and polyurethane dispersion; calculate the relative ratio Hv of the hydroxyl value when each component of the three-component binder is mixed r , and control the relative hydroxyl value ratio Hv r Meet 1.02≤Hv r ≤1.45. The present invention effectively improves and regulates the formulation and ratio of the binder, strictly controls the relative ratio of the hydroxyl value in the binder and the amount of acrylic emulsion with different hydroxyl values, and can comprehensively coordinate the adhesion and wettability of the ink to achieve better high level.

Description

technical field [0001] The invention belongs to the field of ink, in particular to a water-based polyurethane ink for gravure printing. Background technique [0002] Gravure printing, referred to as gravure printing, is one of the four printing methods. Gravure printing is a direct printing method, which directly imprints the ink contained in the gravure pits onto the substrate. The shade level of the printed picture is determined by the size and depth of the pits. , the ink contains more ink, and the ink layer left on the substrate after embossing is thicker; on the contrary, if the pits are shallow, the amount of ink contained is less, and the ink layer left on the substrate after embossing thinner. Gravure printing occupies an extremely important position in the field of printing, packaging and graphic publishing due to its bright colors, high saturation, high printing plate durability, stable print quality, and fast printing speed. [0003] However, the existing gravu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/102C09D11/107C09D11/033
CPCC09D11/102C09D11/107C09D11/033
Inventor 郭松海燕子钟琦
Owner ZHEJIANG HUABAO INK