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UV-LED (Ultraviolet-Light Emitting Diode) cured flexographic printing ink and preparation method thereof

A UV-LED and ink technology, applied in the field of printing ink, can solve the problems of environmental pollution, long curing time of flexo printing ink, etc., and achieve the effects of low radiant heat, high curing rate and low viscosity

Inactive Publication Date: 2018-03-06
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a UV-LED cured flexo printing ink, which solves the problem of long curing time of existing flexo printing inks
[0004] Another object of the present invention is to provide a method for preparing UV-LED cured flexo printing ink, which solves the problem of environmental pollution in existing preparation methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] A kind of preparation method of the flexographic printing ink of UV-LED solidification, specifically implement according to the following steps:

[0031] Step 1. Weigh 30% to 40% of the prepolymer, 3% to 7% of the pigment, 5% to 7% of the photoinitiator, 1% to 3% of the auxiliary agent, and 35% of hexanediol diacrylate according to the mass percentage -45%, the sum of the mass percentages of the above components is 100%;

[0032] Step 2. Add hexanediol diacrylate to the prepolymer and mix evenly at room temperature to obtain a mixture A, then add auxiliary agents to the mixture A and heat and stir for 20 minutes to 40 minutes to obtain a binder.

[0033] Step 3. First add pigment to the binder obtained in step 2 and stir for 1.5h to 2.5h to obtain mixture B, then add photoinitiator to mixture B and stir for 1.5h to 2.5h, and then print on the machine.

[0034] In step 1 and step 2: prepolymer is hyperbranched polyester acrylate; Auxiliary agent is the mixture of leveli...

Embodiment 1

[0038] Step 1. Weigh 30% of hyperbranched polyester acrylate, 4% of magenta ink, 6% of 819, 1% of auxiliary agent, and 40% of hexanediol diacrylate according to mass percentage;

[0039] Step 2. Add hexanediol diacrylate to the hyperbranched polyester acrylate and mix uniformly at room temperature to obtain a mixture A, then add additives to the mixture A and heat and stir for 30 minutes to obtain a binder.

[0040] In step 1 and step 2: the auxiliary agent is a mixture of leveling agent and dispersant, the leveling agent and dispersant are polyurethane RM2020 and CF-10 respectively, and the mass mixing ratio of the two is 1:1.

[0041] Step 3. First add magenta ink to the binder obtained in step 2 and stir for 2 hours to obtain mixture B, then add 819 to mixture B and stir for 2 hours, and then print on the machine.

Embodiment 2

[0043] Step 1. Weigh 40% of hyperbranched polyester acrylate, 7% of magenta ink, 5% of 819, 2% of auxiliary agent, and 45% of hexanediol diacrylate by mass percentage;

[0044] The auxiliary agent is a mixture of leveling agent and dispersant, the leveling agent and dispersant are polyurethane RM2020 and CF-10 respectively, and the mass mixing ratio of the two is 1:1;

[0045] Step 2. Add hexanediol diacrylate to the hyperbranched polyester acrylate and mix uniformly at room temperature to obtain a mixture A, then add additives to the mixture A and heat and stir for 30 minutes to obtain a binder.

[0046] In step 1 and step 2: the auxiliary agent is a mixture of leveling agent and dispersant, the leveling agent and dispersant are polyurethane RM2020 and CF-10 respectively, and the mass mixing ratio of the two is 1:1.

[0047] Step 3. First add magenta ink to the binder obtained in step 2 and stir for 2.5 hours to obtain mixture B, then add 819 to mixture B and stir for 2.5 hou...

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Abstract

The invention discloses UV-LED (Ultraviolet-Light Emitting Diode) cured flexographic printing ink, which is prepared from the following components in percentage by mass: 30 to 40 percent of prepolymer, 3 to 7 percent of pigment, 5 to 7 percent of photoinitiator, 1 to 3 percent of additive and 35 to 45 percent of hexanediol diacrylate, wherein the sum of the percentages (by mass) of the componentsis 100 percent. The prepolymer is hyperbranched polyester acrylate, the pigment is yellow ink or carmine ink; the photoinitiator is any one or a composition of at least two of 819 (phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide), TPO (2,4,6-Trimethylbenzoyl-diphenylphosphine Oxide) and ITX (2-Isopropylthioxanthone); the additive is a mixture of a flatting agent and a dispersing agent; the flatting agent and the dispersing agent are polyurethane RM2020 and CF-10 respectively; further, the mass mixing ratio of the flatting agent to the dispersing agent is 1 to 1. The UV-LED cured flexographicprinting ink which is provided by the invention is low in viscosity, high in curing velocity and high in color intensity.

Description

technical field [0001] The invention belongs to the technical field of printing ink, relates to a UV-LED cured flexo printing ink, and also relates to a preparation method of the flexo printing ink. Background technique [0002] At present, the issue of green environmental protection has become an issue of great concern to people, and the promotion and application of environmentally friendly packaging and printing methods is an inevitable direction for the development of packaging and printing. Flexo printing is widely used in packaging and labeling industries due to its unique structure and printing principles. The traditional use of UV light sources to cure flexo printing inks takes a long time to cure, has low efficiency, and has defects such as short life, high power consumption, thermal deformation of printing materials, and heavy metal pollution. Contents of the invention [0003] The purpose of the present invention is to provide a UV-LED cured flexo printing ink, ...

Claims

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Application Information

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IPC IPC(8): C09D11/104C09D11/037
CPCC09D11/037C09D11/104
Inventor 曹从军王丹凤
Owner XIAN UNIV OF TECH
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