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LED-UV curing offset printing ink

An offset printing ink, cationic curing technology, applied in the field of ink, can solve the problem of no post-curing process, and achieve the effect of clear lines

Active Publication Date: 2021-06-04
CHINA BANKNOTE INK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Current offset printing inks, such as the technologies disclosed in patents such as application publication number CN105086601A and authorized announcement number CN104910678B, are UV-curable offset printing inks of free radical system without post-curing process

Method used

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  • LED-UV curing offset printing ink
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The formula is shown in Table 1:

[0033] Table 1

[0034]

[0035] Preparation method: Mix all the raw materials, fully grind them with a Buhler three-roller until the ink fineness is less than 5um, and then you can get UV-LED curable offset printing ink.

[0036] The prepared UV-LED photocurable offset printing ink has a viscosity of 22.9Pa s (30°C, HAAKE RV1 rheometer, 1 degree cone and plate, and a shear rate of 300s -1 ), at a printing speed of 8000 sheets / hour, the power is 20W / cm after a wavelength of 385nm 2 After the advanced LED-UV curing equipment, the printed matter is completely dry, the stability of the ink machine is good, the lines are smooth, and the pattern is clear. Three days after the printing is completed, the printed matter shall be tested for acid resistance, alkali resistance, hot water resistance, tetrachlorethylene resistance, ethyl acetate resistance, sodium hypochlorite resistance, acetone resistance and ethanol resistance according to ...

Embodiment 2

[0038] The formula is shown in Table 2:

[0039] Table 2

[0040]

[0041]

[0042] Preparation method: Mix all the raw materials, fully grind them with a Buhler three-roller until the ink fineness is less than 5um, and then you can get UV-LED curable offset printing ink.

[0043] The prepared UV-LED photocurable offset printing ink has a viscosity of 21.6Pa s (30°C, HAAKE RV1 rheometer, 1 degree cone and plate, and a shear rate of 300s-1). Wavelength 395nm Power 20W / cm 2 After the advanced LED-UV curing equipment, the printed matter is completely dry, the stability of the ink machine is good, the lines are smooth, and the pattern is clear. Three days after the printing is completed, the printed matter shall be tested for acid resistance, alkali resistance, hot water resistance, tetrachlorethylene resistance, ethyl acetate resistance, sodium hypochlorite resistance, acetone resistance and ethanol resistance according to "GB 9274-1988 Determination of Paint and Varnish ...

Embodiment 3

[0045] The formula is shown in Table 3:

[0046] table 3

[0047]

[0048]

[0049] Preparation method: Mix all the raw materials, fully grind them with a Buhler three-roller until the ink fineness is less than 5um, and then you can get UV-LED curable offset printing ink.

[0050] The prepared UV-LED photocurable offset printing ink has a viscosity of 20.8Pa s (30°C, HAAKE RV1 rheometer, 1 degree cone and plate, and a shear rate of 300s -1 ), at a printing speed of 8000 sheets / hour, the power is 16W / cm after a wavelength of 365nm 2 After the advanced LED-UV curing equipment, the printed matter is completely dry, the stability of the ink machine is good, the lines are smooth, and the pattern is clear. Three days after the printing is completed, the printed matter shall be tested for acid resistance, alkali resistance, hot water resistance, tetrachlorethylene resistance, ethyl acetate resistance, sodium hypochlorite resistance, acetone resistance and ethanol resistance a...

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PUM

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Abstract

The invention relates to the technical field of printing ink, and in particular, relates to LED-UV curing offset printing ink. The offset printing ink is prepared from the following components in percentage by weight: 1-10% of a cation-curable compound, 40-70% of a free radical-curable compound, 1-12% of a photoinitiator, 10-30% of a pigment and 0.5-10% of an auxiliary agent. The LED-UV curing offset printing ink suitable for high-speed printing can be instantly cured under the condition of LED-UV narrow-band ultraviolet light, and lines are clear after printing is conducted in an offset printing mode. And after curing, various performance indexes (adhesive force, wear resistance, chemical resistance and the like) meet the printing requirements of securities.

Description

technical field [0001] The invention relates to the technical field of inks, in particular to an LED-UV curing offset printing ink. Background technique [0002] Compared with traditional UV light sources, LED-UV light sources are significantly advanced and practical. LED-UV is a single-band UV, and the luminous energy is highly concentrated in a specific ultraviolet light band. The effective luminous efficiency is high, which can save energy costs and greatly Reduced CO 2 emissions. Because the UV-LED light source does not produce short-wave ultraviolet light, no unpleasant ozone will be produced during the radiation process, and the environmental protection performance is good. Pulse switch, without preheating, instantaneous start and close, greatly improving work efficiency. Long service life. According to the test, the service life of UV-LED light source can be as high as 20,000 to 30,000 hours, which is more than ten times that of the existing high-pressure mercury l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/101C09D11/037C09D11/03
CPCC09D11/101C09D11/037C09D11/03
Inventor 黄维维杨鹏孙明珠蒋煜沈斌徐莹
Owner CHINA BANKNOTE INK