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Flexographic printing water-based ink for food packaging

A technology of flexographic printing and water-based ink, applied in the direction of ink, household utensils, applications, etc., to achieve the effects of improved safety performance, strong adhesion, and good migration resistance

Active Publication Date: 2012-03-21
银川市富邦印刷包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

John Russell (US6623553Printing Process with Edible Inks. Sep.23 th 2003. 7 ) et al. study edible inks intended for edible materials (rice paper, icing, etc.), chocolate, cakes, muffins and other screen printing patterns, and have ideal hues and edges, using hydrocolloids, such as xanthan gum, If sorbitol, wheat / corn / potato starch, etc. are directly used in printing and packaging inks, their drying performance, gloss performance, wet fastness and preservation have great limitations

Method used

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  • Flexographic printing water-based ink for food packaging
  • Flexographic printing water-based ink for food packaging
  • Flexographic printing water-based ink for food packaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1 Cyan ink formulation for flexographic printing

[0048]

[0049]

[0050] 2 Configuration method, detection content and results

[0051] (1) Weigh each component in proportion, mix and stir for 15 minutes at high speed with a magnetic stirrer or an electric stirrer to obtain a pre-dispersed color paste.

[0052] (2) Pour the color paste into a fast sand mill, add 200 g of medium-sized zirconia beads, and sand at a speed of 2000 r / min for 2.5 to 3.5 hours to obtain evenly dispersed water-based ink.

[0053] (3) Add ethanol (≤8%), isopropanol (≤5%), glycerin (≤6%), etc. to improve the film-forming properties of the ink; use thickener PVP (≤3%) and water (≤10%) ), polyacrylic acid emulsion (≤15%) to adjust the viscosity.

[0054] (4) Use the IGT printability tester (F1 in the Netherlands) to make flexible proofing at 128g / m 2 The coated paper has a density of 1.53 and Lab values ​​of 49.3, -38.4, and -49 when measured with an x·rite500 series densitometer. GB / T...

Embodiment 2

[0061] 1 Ink formulations for flexographic printing

[0062]

[0063] 2 Configuration method, detection content and results

[0064] (1) Use a balance to weigh each component in proportion, and after mixing, stir at a high speed for 15 minutes with a magnetic stirrer or an electric stirrer to obtain a pre-dispersed color paste.

[0065] (2) Pour the color paste into a fast sand mill, add 200g of medium-sized zirconia beads, and sand at a speed of 2000r / min for 2-3 hours to obtain a uniformly dispersed water-based ink.

[0066] (3) Add ethanol (≤8%), isopropanol (≤5%), glycerin (≤5%), etc. to improve the film-forming properties of the ink; use thickener PVP (≤2%) and water (≤10%) ), polyacrylic acid emulsion (≤15%) to adjust the viscosity.

[0067] (4) Use the F1 type printability tester (IGT company in the Netherlands) to do flexible proofing at 128g / m 2 Coated paper, the density measured by x·rite500 series densitometer is 0.9 and the Lab value is 53.6, 46.6, -2.1 respe...

Embodiment 3

[0074] 1 Yellow ink formulation for flexographic printing

[0075]

[0076] 2 Configuration method, detection content and results

[0077] (1) Use a balance to weigh each component in proportion, and after mixing, stir at a high speed for 15 minutes with a magnetic stirrer or an electric stirrer to obtain a pre-dispersed color paste.

[0078] (2) Pour the color paste into a fast sand mill, add 200g of medium-sized zirconia beads, and sand at a speed of 2000r / min for 2-3 hours to obtain a uniformly dispersed water-based ink.

[0079] (3) Add ethanol (≤5%), isopropanol (≤5%), glycerin (≤2%), etc. to improve the film-forming properties of the ink; use thickener PVP (≤2%) and water (≤10%) ), polyacrylic acid emulsion (≤15%) to adjust the viscosity.

[0080] (4) Use the IGT printability tester (F1 in the Netherlands) to make flexible proofing at 128g / m 2 Light ketone paper, measured with an x·rite500 series densitometer, has a density of 0.9 and a Lab value of 88.3, ​​0.4, an...

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Abstract

The invention relates to a flexographic printing water-based ink for food packaging, which comprises an acrylic resin binder, an addition agent, a colorant and deionized water. The flexographic printing water-based ink is good in moving resistance after solidified crosslinking is adopted and is prepared by premixing, sanding and dispersing water-based polyacrylic acid resin having no toxic effect on the human body, food-grade colorants, addition agents and the like according to a fixed proportion. The obtained ink utilizes flexographic printing to form pictures, and after high-temperature drying treatment is performed to a sample, the ink is high in adhesion, resists hot water of 80 DEG C and has a certain acidproof and alkaliproof performance. The water-based ink can replace traditional solvent ink, is applied to various plastics and paper printing, and is particularly used for the printing surface (such as the surface of a paper plate) directly contacted with food or the printing surface of a toy possibly closely contacted with sense organs of infants, thereby greatly improving safety performance.

Description

technical field [0001] The invention relates to the technical field of water-based printing inks, in particular to a water-based ink for food packaging flexographic printing. Background technique [0002] Most of the inks currently used in my country contain organic solvents such as petroleum distillates, benzene and its derivatives, or toxic and corrosive ketones. During the production process, they have caused harm to the health of workers. If used as food Packaging ink, in direct contact with food, the migration and penetration of small molecular organics will have an impact on the health of consumers. In order to prepare inks that can be in direct contact with food, its components need to be green and environmentally friendly, meeting the "GB9685-2008 Hygienic Standards for the Use of Additives for Food Containers and Packaging Materials" or "GB2760-2007 Hygienic Standards for the Use of Food Additives", and adding various Surfactant additives (wetting agents, emulsifier...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10C09D11/107
Inventor 刘式刚李广杰李路海
Owner 银川市富邦印刷包装有限公司
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