Gravure alcohol ester plastic in-print environment-friendly ink

A plastic and environmentally friendly technology, applied in ink, household utensils, applications, etc., can solve problems such as substandard adhesion fastness, poor film-forming performance, poor light resistance and aging resistance, and achieve good light resistance and outdoor resistance Aging resistance and other excellent properties, good blade adaptability, and excellent film-forming performance

Active Publication Date: 2014-02-19
CHENGDU PRESSTER NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]2. Poor yellowing resistance: traditional ink uses aromatic polyurethane, which has poor optical stability and poor yellowing resistance of the film after film formation
[0007]3. The adhesion fastness is not good, especially the adhesion fastness on OPP and BOPP printing substrates is not up to standard, so it cannot meet the requirements of integration—ready to use One ink to print all substrates: the reason is that the selection of binder resin, ink dispersion (fineness, viscosity), ink drying (solvent volatilization), additives, etc. all affect the adhesion of ink on the surface of plastic film. The fastness has a direct or indirect impact, and all factors must be considered comprehensively to achieve excellent adhesion strength
[0008]4. Poor film-forming performance: Traditional aromatic polyurethanes mainly react polyester polyols / polyether polyols with isocyanic acid to form hydroxyl-terminated polyurethane resins. The polar group in the structure is mainly carbamate, and the molecular cohesion is not enough to meet the film-forming performance requirements of the ink resin
[0009]5. Plate blocking, poor shallow net transfer, poor adaptability of scraper: Incorrect choice of diluent and compatibility ratio cause ink to dry quickly, and the fineness of ink is not up to standard , the particles are too coarse, resulting in unclean scraping
[0010]6. Anti-adhesive: Incorrect choice of diluent and compatibility ratio, not adding correct additives, causing ink to dry slowly
[0014]10. Poor light fastness and aging resistance

Method used

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  • Gravure alcohol ester plastic in-print environment-friendly ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1 Preparation of white ink A1 and color ink B1

[0057] Weigh 24g of polyurethane resin, 12g of ternary vinegar resin, 2.5g of aldehyde and ketone resin, 1g of phenolic resin, 0.3g of dispersant, 0.3g of defoamer, 0.3g of leveling agent, 0.8g of antistatic agent, adhesion promoter Add 1.5g of whitening agent, 0.05g of whitening agent, 0.05g of wax powder, 20g of titanium dioxide, and 20g of diluent into the material barrel for mixing, stirring and dispersing. The mixer adopts FS series high-speed disperser, disperses at low speed for 3-5 minutes, and then disperses at high speed for 10-15 minutes. First low speed and then high speed can make the material disperse more evenly. The mixer should be cleaned very clean, and attention should be paid to controlling viscosity, fineness, tinting strength, adhesion, etc. when mixing.

[0058] After the mixture is evenly stirred, the material is ground. The particle size of the material after grinding is 5um-6um. Due ...

Embodiment 2

[0065] The preparation of embodiment 2 white ink A2 and colored ink B2

[0066] Weigh 26g of polyurethane resin, 14g of ternary vinegar resin, 3.5g of aldehyde and ketone resin, 2g of phenolic resin, 0.5g of dispersant, 0.5g of defoamer, 0.5g of leveling agent, 1g of antistatic agent, adhesion promoter 2g, 0.1g of whitening agent, 0.1g of wax powder, 26g of titanium dioxide, and 23.8g of diluent were put into the material bucket for mixing, stirring and dispersing. The mixer adopts FS series high-speed disperser, disperses at low speed for 3-5 minutes, and then disperses at high speed for 10-15 minutes.

[0067] After the mixture is evenly stirred, the material is ground. The particle size of the material after grinding is 5um-6um. Due to the high temperature during grinding, circulating water is needed to cool down. The printing ink horizontal sand mill with application number CN201120238526.5 is used for grinding. Machine, through the cooling water in the grinding cylinder,...

Embodiment 3

[0074] Embodiment 3 The preparation of white ink A3 and color ink B3

[0075] Weigh 28g of polyurethane resin, 16g of ternary vinegar resin, 4.5g of aldehyde and ketone resin, 3g of phenolic resin, 0.7g of dispersant, 0.7g of defoamer, 0.7g of leveling agent, 1.2g of antistatic agent, adhesion promoter Put 2.5g of whitening agent, 0.15g of whitening agent, 0.15g of wax powder, 30g of titanium dioxide, and 25g of diluent into the material bucket for mixing, stirring and dispersing. The mixer adopts FS series high-speed disperser, disperses at low speed for 3-5 minutes, and then disperses at high speed for 10-15 minutes. First low speed and then high speed can make the material disperse more evenly. The mixer should be cleaned very clean, and attention should be paid to controlling viscosity, fineness, tinting strength, adhesion, etc. when mixing.

[0076] After the mixture is evenly stirred, the material is ground. The particle size of the material after grinding is 5um-6um. ...

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Abstract

The invention discloses a gravure alcohol ester plastic in-print environment-friendly ink. A white ink includes polyurethane resin, ternary vinyl chloride-acetate copolymer, aldehyde-ketone resin, phenolic resin, a dispersing agent, a defoaming agent, a leveling agent, an antistatic agent, an adhesion promoter, a whitening agent, a wax powder, titanium dioxide and a diluent. A color ink includes polyurethane resin, ternary vinyl chloride-acetate copolymer, aldehyde-ketone resin, phenolic resin, a dispersing agent, a defoaming agent, a leveling agent, an antistatic agent, an adhesion promoter, a pigment and a diluent. The ink provided by the invention solves the problem that an existing printing ink cannot completely remove benzophenone residual and has good product performance.

Description

technical field [0001] The invention relates to an environment-friendly ink, in particular to an environment-friendly ink printed on gravure alcohol ester plastics. Background technique [0002] At present, more than 95% of domestic plastic flexible packaging printing is in the form of gravure printing. The ink industry has been working hard to develop environmentally friendly inks with less environmental pollution to solve the benzene damage and benzene residues caused by toluene inks on health. Packaged food Quality issues. [0003] For food packaging, in addition to daily use, people also put forward higher requirements for its environmental protection and safety. For the safety of food flexible packaging products, it mainly refers to the solvent residues on flexible packaging, especially benzene residues. Benzene residues on flexible packaging mainly come from gravure printing inks, laminating glues and solvents used in the manufacture of gravure printing or dry lamina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/102C09D11/03C09D11/033
Inventor 史险峰
Owner CHENGDU PRESSTER NEW MATERIALS
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