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Solvent-free ultraviolet curing gravure printing ink

A kind of gravure printing ink and ultraviolet light technology, which is applied in the direction of ink, household utensils, applications, etc., can solve the problems of unqualified VOCs detection, etc., and achieve the effect of high brightness and surface strength, stable viscosity and good fluidity

Inactive Publication Date: 2021-04-09
和运创新印刷包装有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There is an insurmountable defect in the existing UV-curable inks and their printing processes used for offset printing and flexo printing: the printed products have a special odor
[0006] In order to further solve the problem of special odor of printed packaging and unqualified VOCs detection, it is necessary to minimize the occurrence of side reactions in the photocuring process on the premise of ensuring printing quality, and it is necessary to reduce the photoinitiator containing benzene ring structure The dosage needs to develop UV ink specially used for gravure printing under nitrogen protection

Method used

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  • Solvent-free ultraviolet curing gravure printing ink
  • Solvent-free ultraviolet curing gravure printing ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] In a 100ML round-bottomed flask, feed 50 grams (connecting material, pigment and set photoinitiator) according to the formula ratio, then add 30 grams of 1.2mm zirconium beads, stir and grind for 30 minutes, and then filter with a 300-mesh filter cloth. The ink examples 1-8 obtained for testing are shown in the table below.

[0044] Table 1 Embodiment 1~8 feeding formula

[0045]

[0046] Wherein, the toners in Examples 1-8 are black, yellow, red, white, red, yellow, cyan and black respectively.

experiment example 1

[0053] (1) Determination of film forming strength:

[0054] Use a 291 pencil hardness tester (Erichsen, Germany) to test the sample to be tested according to the GB / T6739-2002 standard, and repeat 3 times for each sample. The pencil hardness level is divided into 6B.5B.4B.3B.2B.B.HB.F.H.2H.3H.4H.5H.6H.7H.8H.9H (grade 1-17), the higher the value, the higher the hardness.

[0055] (2) Adhesion determination:

[0056] Place the sample of the paint film to be tested on a Sheen Ref 750 scratcher, and then use 3M (Type 600) adhesive tape to test the adhesion of the ink layer to be tested according to the GB / T9286-1998 standard, and repeat 3 times for each sample. According to the size of adhesion, it is divided into 0-5 grades, the smaller the grade, the better the adhesion.

[0057] (3) Viscosity measurement

[0058] The samples of Examples 1-8 and Comparative Examples 1-3 were subjected to viscosity measurement using a viscometer.

[0059] (4) Measurement of curing speed

[0...

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PUM

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Abstract

The invention relates to the technical field of intaglio printing ink, and provides solvent-free ultraviolet curing intaglio printing ink, which comprises a binder, a photoinitiator, toner and a photoresist, wherein the binder comprises an active monomer and a reactive oligomer, and the active monomer comprises the following components in parts by weight: 70-99 parts of dipropylene glycol diacrylate and 30-1 part of trimethylolpropane triacrylate. The photoinitiator has the advantages of favorable flowability and low photoinitiator content, basically does not contain VOCs, and is specially used for ultraviolet curing gravure printing under nitrogen protection.

Description

technical field [0001] The invention relates to the technical field of gravure printing inks, in particular to a solvent-free ultraviolet light curing gravure printing ink. Background technique [0002] In the existing traditional gravure printing technology, more than 90% of the gravure printing inks used are solvent-based inks, which contain a large amount of organic solvents, some of which are low-toxic solvents, and some have pungent odors. During the preparation and use of solvent-based inks Among them, there is a large amount of VOCs (Volatile Organic Compounds, volatile organic compounds) emissions, which will affect the environment and cause serious environmental pollution; long-term exposure will affect human health and cause physical and mental harm to operators; production with this type of ink Printed materials, there are VOCs residues, which are harmful to the user's body. [0003] Existing UV-curable inks cannot be used on gravure printing equipment due to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/101
CPCC09D11/101
Inventor 解传红李良陈源
Owner 和运创新印刷包装有限责任公司
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