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Alcoholic ink for aluminum foil backing paper for cigarettes and preparation method for alcoholic ink

A technology for aluminum foil backing paper and ink, applied in the field of printing ink and its production process, can solve the problems of bad, aldehyde residue, residual monomer odor, etc.

Inactive Publication Date: 2013-01-16
周渝 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] ①Water-soluble cigarette aluminum foil paper ink: At present, most water-soluble cigarette aluminum foil paper inks are mainly composed of water as the main solvent, aminated acrylic resin, and a small amount of alcohol and co-solvent. This type of ink is co-solvent after film formation And amine residues are relatively large, if the quality of the resin is not good or unstable, there will be the smell of residual monomers, which will affect the quality of tobacco
Moreover, this type of ink can only meet the requirements of medium and low-speed printing machines, and the adhesive joints are easy to discolor
[0006] ②Alcohol-soluble cigarette aluminum foil paper ink: At present, most alcohol-soluble cigarette aluminum foil paper inks are mainly composed of alcohol as the main solvent, polyvinyl acetal resin, and a small amount of co-solvent and additives. This type of ink is made of polyethylene When using acetal resin, due to the different production processes of various manufacturers, the content of residual formaldehyde, acetaldehyde, butyraldehyde and other free aldehydes is also different. After the ink film is formed, the co-solvent may have residual aldehydes. Tobacco quality affects
And cause the ink to have an odor or poor adhesion after drying
[0007] ③Ester-soluble cigarette aluminum foil paper ink: At present, most ester-soluble cigarette aluminum foil paper inks are mainly composed of ethyl acetate as the main solvent, chlorinated modified resin, and a small amount of co-solvent and auxiliary agent. When chlorinating the modified resin, there is a risk of dechlorination under acidic conditions to generate chlorine and hydrogen chloride, which has a great impact on the quality of tobacco, and the large residue of ethyl acetate will change the intrinsic flavor of tobacco

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Put 100KG of absolute ethanol into the reaction kettle and raise the temperature to reflux; after fully mixing and dissolving 450KG of mixed monomers (80KG of acrylic acid, 250KG of butyl acrylate, 120KG of methyl methacrylate) and 7KG of azobisisobutyronitrile, Add dropwise within 3 hours; keep warm for 1 hour, add 1.5KG azobisisobutyronitrile and 250KG alcohol to keep warm for 2 hours; add 1.5KG azobisisobutyronitrile and 200KG alcohol to keep warm for 2 hours; vacuum distillation Discharge about 500KG alcohol, cool and discharge. Obtain a light yellow liquid resin with high solid content. The main indicators are: light yellow liquid appearance, viscosity 5000-10000cp25°C, pH value: 7±0.5, solid content>80%, glass transition temperature -10°C, acid value: 135±5 mgKOH / g. Proportionally in another reaction kettle, first put 90KG ethyl cellulose, 730KG alcohol, and 20KG dye into a reaction kettle to dissolve according to the formula amount, and then put the above-mentio...

Embodiment 2

[0028] Put 100KG of absolute ethanol into the reaction kettle and raise the temperature to reflux; fully mix 450KG of mixed monomers (200KG of butyl acrylate, 140KG of methyl methacrylate, 110KG of hydroxypropyl acrylate) and 7KG of azobisisobutyronitrile After dissolving, add dropwise within 3 hours; keep warm for 1 hour, add 1.5KG azobisisobutyronitrile and 250KG alcohol and continue to keep warm for 2 hours; add 1.5KG azobisisobutyronitrile and 200KG alcohol and continue to keep warm for 2 hours; About 500KG alcohol is distilled out under reduced pressure, and the material is cooled and discharged. Obtain a light yellow liquid resin with high solid content, the main indicators are: the appearance is light yellow liquid, viscosity: 5000~10000cp25°C, pH value: 7±0.5, solid content>80%, glass transition temperature is -10°C, hydroxyl value : 155±5 mgKOH / g. Proportionally in another reaction kettle, first put 90KG ethyl cellulose, 730KG alcohol, and 20KG dye into a reaction ke...

Embodiment 3

[0035] Put 100KG of absolute ethanol into the reaction kettle and raise the temperature to reflux; 450KG of mixed monomers (40KG of acrylic acid, 245KG of butyl acrylate, 110KG of methyl methacrylate, 55KG of hydroxypropyl acrylate) and 7KG of azobisisobutyronitrile After fully mixing and dissolving, add dropwise within 3 hours; keep warm for 1 hour, add 1.5KG azobisisobutyronitrile and 250KG alcohol and continue to keep warm for 2 hours; add 1.5KG azobisisobutyronitrile and 200KG alcohol to continue keeping warm for 2 hours hour; about 500KG alcohol is distilled out under reduced pressure, and the material is cooled and discharged. Obtain a light yellow liquid resin with high solid content. The main indicators are: the appearance is light yellow liquid, viscosity: 5000-10000cp25°C, pH value: 7±0.5, solid content >80%, glass transition temperature -6°C, acid value : 70±5 mgKOH / g, hydroxyl value: 75±5 mgKOH / g. Proportionally in another reaction kettle, first put 300KG ethyl ce...

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Abstract

The invention belongs to printing ink and a production process thereof, in particular to alcoholic ink for aluminum foil backing paper for cigarettes and a production process for the alcoholic ink. The ink comprises the following components in percentage by weight: 5 to 20 percent of alcoholic acrylic resin, 5 to 20 percent of modified cellulose, 1 to 3 percent of dye and the balance of solvent, wherein the alcoholic acrylic resin is a copolymerization product of 40 to 60 mass percent of acrylic mixed monomer, 0.1 to 1.5 mass percent of azodiisobutyronitrile and the balance of alcohol. The process comprises the following steps of: performing copolymerization of the acrylic mixed monomer, the azodiisobutyronitrile and the alcohol with stirring, and distilling off most solvent to obtain a light yellow liquid resin; and adding the dye, the modified cellulose and the solvent in a ratio, and stirring and dispersing to obtain the alcoholic ink for the aluminum foil backing paper for the cigarettes. The ink has high stability, and after the ink forms a film, the film does not have any toxicity, odor, heavy metals and the like, is neither too hard, nor too soft and has high solvent release performance and high water resistance and abrasion resistance, and the manufacturing cost is low.

Description

technical field [0001] The invention belongs to printing ink and its production process, in particular to alcohol-based ink for cigarette aluminum foil backing paper and its production process. Background technique [0002] As one of the important auxiliary materials of cigarette packaging, aluminum foil backing paper is used in the small cigarette box packaging. Its main function is to prevent moisture and preserve fragrance. Although it is hidden in the cigarette box, its importance is very high. Under normal circumstances, most of the aluminum foil backing paper is produced by the traditional composite process. The aluminum foil and the adhesive backing paper are laminated together under a certain pressure, and the ink is coated on the aluminum surface by the coating unit, and the aluminum foil is coated with ink after Dry embossed and slit for use. [0003] Inks for aluminum foil backing paper for cigarettes generally consist of resins, solvents, dyes and additives....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10C09D11/14C08F220/18B65B19/02C09D11/00C09D11/107
Inventor 周渝张志明
Owner 周渝
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