Ultraviolet offset printing continuous machine white ink and preparation method thereof

A UV glue and machine technology, applied in the field of printing, can solve the problem of difficult to have UV screen printing ink covering effect at the same time, UV offset printing white ink printing speed and other problems, to increase ink flexibility and weather resistance, increase flexibility and weather resistance, The effect of protecting the environment

Active Publication Date: 2016-05-04
山东布瑞特油墨有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that it is difficult for traditional inks to have both the covering effect of UV screen printing ink and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] The present invention also provides a method for preparing the above-mentioned UV offset printing on-machine white ink, comprising the following steps:

[0033] S1: Pour the polyester acrylate oligomer, dispersant and 40-60% of the monomer into the stirring tank, add titanium dioxide under stirring at 600-800 rpm, and stir evenly to obtain a mixture;

[0034] S2: Grind the mixture to a particle size of ≤5 μm to obtain a color paste, add thermoplastic acrylic resin, photoinitiator and remaining monomers to the color paste, stir evenly and filter with filter cloth to obtain UV offset printing Inline white ink.

[0035] Preferably, the grinding can be carried out using a three-roll machine.

[0036] Preferably, the pore size of the filter cloth is 200-300 meshes.

[0037] The white ink for UV offset printing provided by the present invention is white in appearance, its particle size is less than or equal to 5 μm (25 μm double-slotted scraper fineness meter), its viscosit...

Example Embodiment

[0038] Example 1

[0039] Pour 15.0% polyester acrylate oligomer, 2.0% dispersant and 5.0% monomer into a stirring tank, add 50.0% titanium dioxide under stirring at 600-800 rpm, and stir evenly to obtain a mixture; The mixture is ground to a particle size of ≤5 μm to obtain a color paste. Add 20.0% thermoplastic acrylic resin, 3.0% photoinitiator and the remaining 5.0% monomer to the color paste. After stirring evenly, use filter cloth to filter to obtain ultraviolet light. Offset printing on-machine white ink; the percentages mentioned are all mass percentages.

[0040] The white ink for UV offset printing provided by the present invention is white in appearance, its particle size is less than or equal to 5 μm (25 μm double-slotted scraper fineness meter), its viscosity is 40-50″ (25° C., Japan 4# cup), and its tinting strength is greater than or equal to 98.0 % (compared with standard sample).

Example Embodiment

[0041] Example 2

[0042]Pour 20.0% polyester acrylate oligomer, 3.0% dispersant and 8.0% monomer into a stirring tank, add 50.0% titanium dioxide under stirring at 600-800 rpm, and stir evenly to obtain a mixture; The mixture is ground to a particle size of ≤5 μm to obtain a color paste. Add 15.0% thermoplastic acrylic resin, 3.0% photoinitiator and the remaining 7.0% monomer to the color paste. After stirring evenly, use filter cloth to filter to obtain ultraviolet light. Offset printing on-machine white ink; the percentages mentioned are all mass percentages.

[0043] The white ink for UV offset printing provided by the present invention is white in appearance, its particle size is less than or equal to 5 μm (25 μm double-slotted scraper fineness meter), its viscosity is 40-50″ (25° C., Japan 4# cup), and its tinting strength is greater than or equal to 98.0 % (compared with standard sample).

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Abstract

The invention relates to the technical field of printing, and particularly discloses ultraviolet offset printing continuous machine white ink and a preparation method thereof. The ultraviolet offset printing continuous machine white ink is prepared from, by mass, 15.0%-25.0% of polyester acrylate oligomer, 10.0%-20.0% of thermoplastic acrylic resin, 40.0%-50.0% of titanium dioxide, 2.0%-3.0% of a dispersing agent, 3.0%-5.0% of a photoinitiator and 10.0%-20.0% of monomers. According to the ultraviolet offset printing continuous machine white ink, the covering power of traditional ultraviolet screen printing ink is compatible with the high-speed printing characteristics of ultraviolet offset printing ink, not only is the covering effect of the UV screen printing ink achieved, but also the high-speed cooperating requirement of the UV offset printing ink is achieved.

Description

【Technical field】 [0001] The invention relates to the technical field of printing, in particular to an ultraviolet offset printing on-line white ink and a preparation method thereof. 【Background technique】 [0002] Cigarette pack barcode white ink has experienced the following development process: UV (ultraviolet light) ink screen printing, UV offset printing (printing 2-3 times). The speed of UV screen printing is slow, and the production capacity is too low; UV offset printing needs two printings, sometimes even three printings, which requires high color sets of the machine, otherwise it needs two printings on the machine, which will waste time and cause excessive wear on the machine . [0003] The cigarette pack process has the following special requirements for white ink: 1. The white ink cannot contain silicon, so as not to affect the printing of the black ink of the barcode; 2. The black ink of the barcode must have good printability on the white ink, and black and wh...

Claims

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Application Information

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IPC IPC(8): C09D11/107C09D11/03C09D11/037
CPCC09D11/03C09D11/037C09D11/107
Inventor 李飞
Owner 山东布瑞特油墨有限公司
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