Gravure printing method

一种凹版印刷、凹版的技术，应用在水性油墨的凹版印刷领域，能够解决减少油墨转印量、干燥性差等问题，达到优异亮度适性、高印刷浓度的效果

Active Publication Date: 2018-05-11
THINK LABORATORY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the drying property of water-based gravure ink is worse than that of oil-based gravure ink, so in order to reduce the amount of ink carrier for drying, the depth of the gravure groove must be reduced from about 20 μm for oil-based gravure ink to about 14 μm to reduce the amount of ink transfer

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment

[0204] Hereinafter, the present invention will be further specifically described by way of examples and the like. In the following examples and the like, various physical properties were measured by the following methods. In addition, "parts" and symbols "%" mean "parts by mass" and "% by mass" unless otherwise noted.

[0205] (1) Determination of the weight average molecular weight of the polymer

[0206] Phosphoric acid and lithium bromide were dissolved in N,N-dimethylformamide at concentrations of 60mmol / L and 50mmol / L, respectively, as eluents, and gel permeation chromatography [GPA apparatus manufactured by Tosoh Co., Ltd. (HLA-8120GPA), Tosoh Co., Ltd. column (TSK-GEL, α-M×2 pieces), flow rate: 1 mL / min] to measure the molecular weight of the water-insoluble polymer. In addition, monodisperse polystyrene with a known molecular weight was used as a standard substance.

[0207] (2) Determination of average particle size of particles

[0208] Measurement was performed us...

manufacture example I

[0211] ・Manufacture example 1 (manufacture of water-insoluble polymer a solution)

[0212] In the reaction vessel equipped with two dropping funnels 1 and 2, put the monomer, solvent and polymerization initiator (2,2'-azobis(2, 4-Dimethylvaleronitrile) (manufactured by Wako Pure Chemical Industries, Ltd., trade name: V-65), polymer chain transfer agent (2-mercaptoethanol) (manufactured by KISHIDA Chemical Co., Ltd.) were mixed and replaced with nitrogen while obtaining the initially charged monomer solution.

[0213] Next, mix the monomers, solvents, polymerization initiators, and chain transfer agents shown in the "dropping monomer solution 1" in Table 1 to obtain the dropping monomer solution 1, and then put it into the dropping funnel 1 for nitrogen replacement . In addition, the monomer, solvent, polymerization initiator, and polymerization chain transfer agent shown in the "dropping monomer solution 2" in Table 1 were mixed to obtain the dropping monomer solution 2, and...

manufacture example II

[0220] ・Manufacture Example II (Manufacture of a dispersion of water-insoluble polymer b particles)

[0221] 0.5 g of methacrylic acid, 14.5 g of methyl methacrylate (manufactured by Wako Pure Chemical Industries, Ltd.), 2-ethylhexyl acrylate (manufactured by Wako Pure Chemical Industries, Ltd.) were placed in a reaction vessel equipped with a dropping funnel. manufactured) 5.0 g, LATEMUL E-118B (sodium polyoxyethylene alkyl ether sulfate 11.1 g, manufactured by Kao Co., Ltd., surfactant), potassium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) as a polymerization initiator 0.2 g and 282.8 g of ion-exchanged water were mixed at 150 rpm and replaced with nitrogen to obtain an initial monomer solution.

[0222] 9.5 g of methacrylic acid, 275.5 g of methyl methacrylate, 95.0 g of 2-ethylhexyl acrylate, 35.1 g of LATEMULE-118B, 0.6 g of potassium persulfate, and 183.0 ion-exchanged water are mixed at 150 rpm to drop monomer The solution was put into the droppin...

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Abstract

Provided is a gravure printing method having high print density and excellent highlighting suitability, even if a high-precision gravure printing plate having reduced thickness is used. The gravure printing method uses an aqueous ink and transfers 1-7 ml / m2 of the ink to a printing medium, said aqueous ink having a Zahn cup #3 viscosity at 20 DEG C of 11.0-20.0 s and an evaporation rate of no morethan 30% by mass in a drying test (1 g of ink dried for 30 mins at a temperature of 40 DEG C and an air flow of 1,400 L / min).

Description

field of invention [0001] The present invention relates to a gravure printing method using water-based ink. Background technique [0002] In gravure printing, an intaglio groove corresponding to the plate-making information is formed on a cylinder as a plate base material to make a plate surface, and the gravure ink is filled in the groove to transfer the printed matter. [0003] In recent years, with the development of environmentally conscious products, water-based gravure inks that reduce VOC have been put into practical use. However, the dryness of water-based gravure ink is worse than that of oil-based gravure ink, so in order to reduce the amount of ink carrier for drying, the depth of the gravure groove must be reduced from about 20 μm for oil-based gravure ink to about 14 μm to reduce the amount of ink transfer. [0004] In order to solve these problems, a method of manufacturing a plate-making roll and a water-based gravure ink have been proposed. [0005] For exa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M1/10B41F3/36B41F9/00B41N1/06C09D11/023
CPCB41F3/36B41F9/00B41N1/06C09D11/023B41F13/11B41M1/10B41F23/0403C09D11/02B41F9/061
Inventor 重田龙男水岛龙马松本雄大植田泰史
Owner THINK LABORATORY CO LTD
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