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A kind of water-based flexo printing ink for tobacco pine paper printing and preparation method thereof

A water-based technology of tipping paper, applied in the fields of polymer chemistry and fine chemical industry, can solve the problems of paper shrinkage and deformation, decrease of tensile strength, and paper brittleness, so as to avoid curling deformation, improve moisture retention and good water resistance Effect

Active Publication Date: 2017-12-08
JIANGSU TANGCAI PRINTING INK SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are still many problems with water-based flexographic inks for tipping paper printing: the speed of flexographic printing machines can reach 200-300m / min, compared with the normal speed of about 100-150m / min for gravure printing machines, it is greatly improving production. At the same time, there are higher requirements for ink transfer, fineness, drying, and curling. The existing water-based flexographic ink technology is widely used in the printing of non-shrinkable substrates such as food packaging bags, aluminum foil, and films. For Thin paper, large pores, and fast-absorbing tipping paper, the paper is prone to shrinkage and deformation during printing, the tensile strength decreases, and the paper becomes brittle, resulting in inaccurate overprinting during printing and affecting subsequent processing

Method used

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  • A kind of water-based flexo printing ink for tobacco pine paper printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 1. Preparation of Modified Acrylic Emulsion

[0053]180g of deionized water was added to the reaction kettle, the temperature was raised to 50°C, 0.2g of polycaprolactone was added to dissolve it completely, 10g of methyl methacrylate, 3g of methacrylic acid, 20g of butyl acrylate and 0.1g of methacrylate were added. Octamethylcyclotetrasiloxane, stirred for 20min, stirring speed 300r / min, and adjusted the pH to 7 with 15% sodium carbonate aqueous solution, then heated to 75℃, added 0.2g ammonium persulfate at 60℃, reacted for 1h Begin dropwise addition of 1 g of the emulsifier sodium alkyl phenyl polyether sulfonate. After dripping, the reaction was continued for 0.5 h, and the pH value of the emulsion was controlled with an aqueous sodium carbonate solution during the entire reaction process to keep it at 7 to obtain a modified acrylic emulsion.

[0054] The obtained emulsion was milky white and translucent, with a solid content of 40.0% and a viscosity of 150 mpa.s ...

Embodiment 2

[0060] 1. Preparation of Modified Acrylic Emulsion

[0061] Add 230g of deionized water to the reaction kettle, heat it up to 60°C, add 1g of polycaprolactone to dissolve it completely, add 18g of methyl methacrylate, 4g of methacrylic acid, 40g of butyl acrylate and 0.2g of octanoate Methylcyclotetrasiloxane, stir for 30min, stirring speed is 300r / min, and adjust the pH value to 7 with sodium carbonate aqueous solution with a concentration of 15%, then increase the temperature to 85 °C, add 1 g of ammonium persulfate at 65 °C, and start dripping after 1h of reaction Add 3g of emulsifier sodium alkyl benzene polyether sulfonate. After dropping, the reaction was continued for 1 h, and the pH value of the emulsion was controlled with an aqueous sodium carbonate solution during the entire reaction process to keep it at 7 to obtain a modified acrylic emulsion.

[0062] The obtained emulsion was milky white and translucent, with a solid content of 42.2% and a viscosity of 165 mpa....

Embodiment 3

[0068] 1. Preparation of Modified Acrylic Emulsion

[0069] Add 285g of deionized water to the reaction kettle, heat it up to 70°C, add 2g of polycaprolactone to dissolve it completely, add 25g of methyl methacrylate, 5g of methacrylic acid, 55g of butyl acrylate and 0.3g of octanoate Methylcyclotetrasiloxane, stir for 30min, stirring speed is 300-400r / min, and adjust the pH value to 8 with 15% sodium carbonate aqueous solution, then heat up to 95℃, add 2g ammonium persulfate at 70℃, react for 1h Begin dropwise addition of 5 g of the emulsifier sodium alkyl phenyl polyether sulfonate. Continue to react for 1h after dripping, and control the pH value of the emulsion with sodium carbonate aqueous solution during the whole reaction process to keep it at 8 to obtain a modified acrylic emulsion.

[0070] The obtained emulsion was milky white and translucent, with a solid content of 45.0% and a viscosity of 180 mpa.s at 25°C.

[0071] 3. Prepare water-based flexographic ink accord...

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Abstract

The invention discloses a water-based flexographic printing ink for cigarette tipping paper printing and a preparation method thereof. The water-based flexographic printing ink is composed of a modified acrylic emulsion, pigment and filler, a wetting dispersant, a transfer printing agent, a defoaming agent, deionized water, and a cosolvent. The modified acrylic emulsion is a novel acrylic emulsion formed by copolymerization of an imported high quality emulsifier, acrylate and special functional monomers, and has the advantages of fantastic calcium ion stability, dilution stability, mechanical stability and freeze-thaw stability, and small pollution to the environment. The water-based flexographic printing ink for tipping paper printing provided by the invention is non-toxic and tasteless, has quick drying speed and good dispersion stability, the printing product is free of deformation and edge curling, and has bright color and excellent antibacterial properties. The printing product has few residual monomer and low odor, is green and environment-friendly, the printing ink can be used cooperatively with a flexographic press, the printing speed can reach 250-300m / min, and the machine speed is doubled than the traditional intagliotipping paper printing press, thus greatly improving the production efficiency, and saving the production cost.

Description

technical field [0001] The invention belongs to the technical field of macromolecular chemistry and fine chemical industry, and particularly relates to a water-based flexographic ink for printing on cigarette tipping paper and a preparation method thereof. Background technique [0002] Tipping paper is "cigarette tipping paper", which is a special paper that connects cigarettes and filters. The printing of tipping paper is mainly gravure printing. At present, most tipping paper printing factories use alcohol-soluble and ester-soluble inks to print tipping paper. The large amount of volatile organic solvents involved in the printing process and the solvent residues in the printed matter will cause problems. The environment and people's physical and mental health have a certain impact. With the increasing voice of environmental protection, environmentally friendly water-based ink for tipping paper printing has become the direction of industry development. [0003] Chinese pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/107C09D11/03C08F220/18C08F220/14C08F220/06C08F2/26
CPCC08F2/26C08F220/18C08F220/1804C09D11/03C09D11/107C08F220/14C08F220/06
Inventor 孟召杰余佩玉范道侠
Owner JIANGSU TANGCAI PRINTING INK SCI TECH CO LTD
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