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Ultraviolet light-cured offset printing ink with LED as light source

A technology of offset printing ink and ultraviolet light, which is applied in the direction of ink, household utensils, applications, etc., can solve the problems of high heat generation, short service life, and difficult drying, and achieve the effects of reduced emissions, clear lines, and excellent curing performance

Active Publication Date: 2015-09-16
CHINA BANKNOTE INK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, UV-curable offset printing inks are generally cured by UV high-pressure mercury lamps, which have defects such as high energy consumption, high heat generation, short service life, and unfavorable environmental protection. However, ordinary UV offset printing inks are difficult to dry under UV-LED light sources. , so it is necessary to develop a new offset printing ink that can dry quickly under the UV-LED light source

Method used

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  • Ultraviolet light-cured offset printing ink with LED as light source
  • Ultraviolet light-cured offset printing ink with LED as light source
  • Ultraviolet light-cured offset printing ink with LED as light source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The formula is shown in the table below, and the amounts of components are all parts by weight.

[0031]

[0032]

[0033] The mercapto-modified polyester acrylate is LED01.

[0034] Urethane acrylate is EB8602.

[0035] The polyester acrylate is EB830.

[0036] The amine-modified polyether acrylate is PO94F.

[0037] Acid-modified methacrylate is EB168.

[0038] The alpha-aminoketone is Irgacure 379.

[0039] The monoacylphosphine is Darocur TPO.

[0040] Polyethylene wax is PEW1555.

[0041] p-Benzoquinone is UV22.

[0042] Preparation method: Mix the above formula in a batching kettle, stir at 1000rpm / min for 30 minutes, and then fully grind it with a Buhler three-roller until the ink fineness is less than 5um, and then the UV-LED ink for offset printing can be obtained.

[0043] The prepared UV-LED photocurable offset printing ink has a viscosity of 23.5Pa s, a thixotropic ring area of ​​4.5E+05, (30°C, HAAKE RV1 rheometer, 1 degree cone and plate, and ...

Embodiment 2

[0047]

[0048] The mercapto-modified polyester acrylate is LED01.

[0049] Urethane acrylate is EB284.

[0050] The polyester acrylate is EB546.

[0051] Trimethylolpropane triacrylate is TMPTA.

[0052] The amine-modified polyether acrylate is PO94F.

[0053] Acid-modified methacrylate is EB168.

[0054] The alpha-hydroxy ketone is Darocur 1173.

[0055] The diacylphosphine is Irgacure 819.

[0056] The polypropylene wax is LANCO 1588.

[0057] p-Benzoquinone is UV22.

[0058] Preparation method: Mix the above formula in a batching kettle, stir at 1000rpm / min for 30 minutes, and then fully grind it with a Buhler three-roller until the ink fineness is less than 5um, and then the UV-LED ink for offset printing can be obtained.

[0059] The prepared UV-LED photocurable offset printing ink has a viscosity of 24.2Pa s, a thixotropic ring area of ​​6.2E+05, (30°C, HAAKE RV1 rheometer, 1 degree cone and plate, and a shear rate of 300s-1 ), at a printing speed of 200m / min, ...

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Abstract

The invention discloses an ultraviolet light-cured offset printing ink with LED as a light source. The ultraviolet light-cured offset printing ink comprises, by weight, 20 to 30 parts of pigment, 55 to 75 parts of radiation-cured resin, 1 to 7 parts of a photoinitiator, 0 to 3 parts of wax, 0.1 to 5 parts of an active diluent and 0.5 to 4 parts of an auxiliary agent. The UV-LED light-cured printing ink has the following characteristics: the printing ink is applicable to offset printing; electric energy consumed in curing is about 1 / 4 of electric energy consumed by a common ultraviolet lamp; emission of CO2 is substantially reduced; ozone is not generated; etc. The printing ink is completely dried under the printing condition of a curing speed of 40 to 200 m / min and enables printed lines to be clear; and after curing, each performance index (adhesion, friction resistance, chemical resistance and the like) of the printing ink accords with requirements on printing of securities.

Description

technical field [0001] The present invention relates to photocurable offset printing inks. Background technique [0002] Ultraviolet light with LED as the light source is a low-energy curing light source, usually point light source, line light source and surface light source. It is composed of several near-ultraviolet chips, which are different from lighting white LED chips. It can emit 375nm, 385nm, 390nm or 395nm ultraviolet rays to cure UV ink. It has the following advantages: Compared with UV lamp curing, LED only needs about 1 / 4 of the power consumption, which can save energy costs and greatly reduce CO 2 emissions. Due to the low heat generation of LED, the printing of printing materials with poor heat resistance such as plastic films and the thermal impact of the printing machine are small, and the paper loss and machine aging are weakened accordingly. Compared with the ultraviolet lamp, the life of LED light source components is about 12 times, the frequency of li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/101C09D11/102C09D11/104C09D11/03
CPCC09D11/03C09D11/101C09D11/102C09D11/104
Inventor 黄维维张世范袁国林杨鹏马永胜李伟陈夏萌张妤
Owner CHINA BANKNOTE INK
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