CN112480739A - Flexographic plate water-based scraping black ink for instant billing and preparation method and application thereof - Google Patents
Flexographic plate water-based scraping black ink for instant billing and preparation method and application thereof Download PDFInfo
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- CN112480739A CN112480739A CN201910860354.6A CN201910860354A CN112480739A CN 112480739 A CN112480739 A CN 112480739A CN 201910860354 A CN201910860354 A CN 201910860354A CN 112480739 A CN112480739 A CN 112480739A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
Abstract
The invention discloses a flexographic plate water-based scraping black ink for billing as well as a preparation method and application thereof, wherein the flexographic plate water-based scraping black ink for billing comprises the following components: the flexographic printing ink comprises, by mass, 40-70 parts of base ink, 30-50 parts of film forming emulsion, 2-4 parts of auxiliary agent and 1-4 parts of solvent, wherein the base ink comprises pigment, grinding resin, defoaming agent, wetting dispersant and first deionized water.
Description
Technical Field
The invention belongs to the technical field of printing ink, and particularly relates to a flexographic plate water-based scraping black ink for instant billing and a preparation method and application thereof.
Background
With the development of the internet era, instant lottery tickets, called instant tickets for short, are used as special valuable tickets, and are combined with e-commerce, mobile games, shared bicycles and the like to gradually form novel cross-industry interactive products, and the diversification of the playing methods thereof promotes the continuous expansion of the industries. The amount of scratch-off ink used as a key material essential for printing of instant invoices is also increasing.
At present, scratch-off ink on the market is various, and has wide application in the fields of network cards, learning cards, telephone cards and the like, but is influenced by the attribute of the instant billing product, the success cases of the existing scratch-off ink application on the instant billing are few, and most scratch-off ink cannot meet the special requirements of easy scratch-off, good covering, strong adhesion and high and low temperature resistance of the instant billing. Therefore, there is a need to develop a flexographic aqueous scratch-off ink suitable for use in drop-to-bill printing to make up for the technical gap in the ink industry in this field.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a flexographic water-based scratch-off black ink for instant billing.
The invention also aims to provide a preparation method of the flexographic water-based scraping black ink for instant billing.
The purpose of the invention is realized by the following technical scheme.
An instant ticket flexographic aqueous scratch-off black ink comprising: 40-70 parts by mass of base ink, 30-50 parts by mass of film-forming emulsion, 2-4 parts by mass of auxiliary agent and 1-4 parts by mass of solvent, wherein,
the base ink is composed of pigment, grinding resin, a defoaming agent, a wetting dispersant and first deionized water, and the ratio of the pigment, the grinding resin, the defoaming agent, the wetting dispersant and the first deionized water is (25-40): (35-60): (1-3): (2-5): (20-40), the grinding resin is polyurethane resin, acrylic resin, modified acrylic resin, polystyrene acrylate or polyamide resin, the defoaming agent is polyether siloxane or siloxane organic matter, the wetting dispersant is copolymer aqueous solution containing high pigment affinity group,
the film-forming emulsion is acrylic acid film-forming emulsion, styrene-acrylic acid film-forming emulsion, alkyd film-forming emulsion or synthetic fatty acid film-forming emulsion,
the auxiliary agent is a sodium diisooctyl sulfosuccinate solution, a polyether siloxane copolymer or a siloxane double-effect surfactant,
the solvent is one or more of glycerol, a polyvinyl alcohol aqueous solution, ethanol, n-butanol, triethanolamine and ammonia water, wherein the concentration of polyvinyl alcohol in the polyvinyl alcohol aqueous solution is 8-15 wt%.
In the technical scheme, the base ink is 50-60 parts by mass, and the film-forming emulsion is 35-45 parts by mass.
In the technical scheme, the ratio of the pigment, the grinding resin, the defoaming agent, the wetting dispersant and the first deionized water is (30-40): (35-45): (1-3): (2-5): (30-40).
In the above technical solution, the pigment is a carbon black pigment.
The preparation method of the flexographic plate water-based scraping black ink for billing comprises the following steps:
1) preparation of base ink
The defoaming agent is added in two times, and the defoaming agent added in two times is as follows: mixing and uniformly dispersing grinding resin and the defoaming agent of the first part, adding pigment, wetting dispersant, first deionized water and the defoaming agent of the second part, and grinding until the particle size is less than or equal to 10 mu m to obtain the base ink, wherein the ratio of the defoaming agent of the first part to the defoaming agent of the second part is 1:1 in parts by mass
In the step 1), zirconia beads with the particle size of 0.8-1.2 mm are adopted for grinding and dispersing for 1-3 h at the speed of 1800 plus 2500rad/min until the particle size is less than or equal to 10 μm.
2) And uniformly stirring the base ink, the film-forming emulsion and the auxiliary agent, adding the solvent to adjust the pH to 8.5-9.5, and adding second deionized water to adjust the viscosity to 40-60 s to obtain the flexographic plate water-based scraping black ink for billing.
In the step 2), stirring at 800-.
In the technical scheme, the ratio of the second deionized water to the first deionized water is (0-4) in parts by mass: (15-19).
The preparation method is applied to improving the stability of the printing ink.
The preparation method is applied to improving the covering property of the printing ink.
The preparation method is applied to improving the adhesive force of the printing ink.
The preparation method is applied to improving the scraping performance of the ink.
The water-based scratch-off black ink for the flexible plate for invoicing can be well adapted to the flexible plate printing mode adopted by lottery printing, and has the following effects:
(1) has good dispersion stability and no precipitation during storage.
(2) The ink layer has good covering performance, and can effectively cover information below the ink layer.
(3) Has stronger adhesive force and ensures the safety of the scraping layer.
(4) Has better scraping performance, and the scraping performance after off-machine scraping and high-temperature and high-humidity treatment can meet the technical requirements.
(5) The ink is not scattered and the plate is not pasted during printing, and the transfer performance and the printability are good.
(6) Does not contain volatile organic solvent, and is green and environment-friendly.
Drawings
FIG. 1 is a graph showing the particle size distribution of particles in an aqueous scratch-off black ink for a flexographic plate obtained in example 5 of the present invention;
FIG. 2 is a graph showing the particle size distribution of the waterborne scratch-off black ink for an instant flexographic plate obtained in example 5 of the present invention after standing for 30 days.
Detailed Description
The technical scheme of the invention is further explained by combining specific examples.
Examples 1 to 5
A preparation method of the flexographic plate water-based scraping black ink for instant billing comprises the following steps:
1) preparation of base ink
The defoaming agent is added in two times, and the defoaming agent added in two times is: the first part of defoaming agent and the second part of defoaming agent are prepared by mixing grinding resin and the first part of defoaming agent, pre-dispersing for 30min at 1000rad/min by using a D2400W digital display electric stirrer (Shanghai Huyuoming instruments Co., Ltd.), transferring to an IGT-2S type high-speed stirring disperser (Shanghai Splende instruments Co., Ltd.) after dispersion, adding pigment, wetting dispersant, first deionized water and the second part of defoaming agent, grinding and dispersing for 2h at 1800rad/min by using zirconia beads with the particle size of 0.8-1.2 mm until the particle size is less than or equal to 10 mu m to obtain base ink, wherein the ratio of the first part of defoaming agent to the second part of defoaming agent is 1:1 in parts by mass
2) Transferring the base ink to a D2400W digital display electric stirrer, adding the film-forming emulsion and the auxiliary agent, stirring for 30min at 1000rad/min, adding the solvent to adjust the pH to 8.5-9.5, adding second deionized water to adjust the viscosity to 40-60 s (Tan cup 2#), and obtaining the flexographic plate water-based scraping black ink for billing, wherein the adjusting parameters of the pH and the viscosity are shown in table 2.
The raw materials and the mass (unit: g) in examples 1 to 5 are shown in Table 1.
TABLE 1
According to the formula weight ratio of the examples 1 to 5 in the table 1, the flexographic plate water-based scratch-off black ink for the instant billing is prepared according to the preparation method, does not contain volatile organic solvent, and has the advantage of environmental protection.
The performance of the instant flexographic water-based scratch-off black ink is tested according to the relevant national standards and industrial requirements. Before testing, a pre-prime was performed by first printing a UV release oil (U.S. Vickers lottery special release oil) with a size of 40mm x 200mm and a gram weight of 200g/m using an IGT-F1 printability tester (IGT, Netherlands)2The thickness of the sample is 3 μm. And after curing and drying, printing the flexographic plate water-based scraping black ink for the instant billing, wherein the thickness of a proofing ink layer of the flexographic plate water-based scraping black ink for the instant billing is 8 mu m. Then, the sample sheet was tested for covering, adhesion and scratch-off.
In Table 2, the scratch resistance was evaluated and four indexes were included, that is, the scratch resistance after the off-machine in Table 2 was scratched and heated at 100 ℃ for 1 hour, heated at 100 ℃ for 2 hours and subjected to each treatment at 80% relative humidity &80 ℃ for 24 hours.
TABLE 2 results of ink Performance test of each example
The particle distribution of the flexographic water-based scratch-off black ink of example 5, i.e. for invoicing, is shown in figures 1 and 2:
as can be seen from fig. 1 and 2, the particle size of the primary pigment of the flexographic water-based scratch-off black ink for ticketing has a narrow distribution and is smaller; after standing for 30 days, the distribution of the pigment particles is not changed greatly, the particle size is still uniform, and no large particles appear, namely no pigment particle sedimentation phenomenon occurs. Thus, the flexographic aqueous scratch-off black ink for immediate invoicing prepared in example 5 had better dispersion stability.
As can be seen from table 2, the appearance, viscosity, pH and surface tension of the flexographic plate water-based scratch-off black ink for instant billing prepared according to the mixture ratio of the above examples 1 to 5 all meet the standard requirements, and the ink has good dispersion stability, hiding property, adhesion and scratch-off property.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (10)
1. An instant ticket flexographic aqueous scratch-off black ink, comprising: 40-70 parts by mass of base ink, 30-50 parts by mass of film-forming emulsion, 2-4 parts by mass of auxiliary agent and 1-4 parts by mass of solvent, wherein,
the base ink is composed of pigment, grinding resin, a defoaming agent, a wetting dispersant and first deionized water, and the ratio of the pigment, the grinding resin, the defoaming agent, the wetting dispersant and the first deionized water is (25-40): (35-60): (1-3): (2-5): (20-40), the grinding resin is polyurethane resin, acrylic resin, modified acrylic resin, polystyrene acrylate or polyamide resin, the defoaming agent is polyether siloxane or siloxane organic matter, the wetting dispersant is copolymer aqueous solution containing high pigment affinity group,
the film-forming emulsion is acrylic acid film-forming emulsion, styrene-acrylic acid film-forming emulsion, alkyd film-forming emulsion or synthetic fatty acid film-forming emulsion,
the auxiliary agent is a sodium diisooctyl sulfosuccinate solution, a polyether siloxane copolymer or a siloxane double-effect surfactant,
the solvent is one or more of glycerol, a polyvinyl alcohol aqueous solution, ethanol, n-butanol, triethanolamine and ammonia water, wherein the concentration of polyvinyl alcohol in the polyvinyl alcohol aqueous solution is 8-15 wt%.
2. The flexographic aqueous scratch-off black ink for an instant ticket as claimed in claim 1, wherein the base ink is 50 to 60 parts by mass and the film forming emulsion is 35 to 45 parts by mass.
3. The flexographic aqueous scratch-off black ink for an instant ticket according to claim 2, wherein the ratio of the pigment, the grinding resin, the defoamer, the wetting dispersant and the first deionized water is (30-40): (35-45): (1-3): (2-5): (30-40).
4. The on-demand flexographic aqueous scratch-off black ink of claim 3, wherein the pigment is a carbon black pigment.
5. The method for preparing the flexographic water-based scratch-off black ink for billing according to any one of claims 1 to 5, comprising the steps of:
1) preparation of base ink
The defoaming agent is added in two times, and the defoaming agent added in two times is as follows: mixing and uniformly dispersing grinding resin and the defoaming agent of the first part, adding pigment, wetting dispersant, first deionized water and the defoaming agent of the second part, and grinding until the particle size is less than or equal to 10 mu m to obtain the base ink, wherein the ratio of the defoaming agent of the first part to the defoaming agent of the second part is 1:1 in parts by mass
2) And uniformly stirring the base ink, the film-forming emulsion and the auxiliary agent, adding the solvent to adjust the pH to 8.5-9.5, and adding second deionized water to adjust the viscosity to 40-60 s to obtain the flexographic plate water-based scraping black ink for billing.
6. The method as claimed in claim 5, wherein in step 1), zirconia beads with a particle size of 0.8-1.2 mm are used for grinding and dispersing at 1800-;
in the step 2), stirring at 800-;
the ratio of the second deionized water to the first deionized water is (0-4) in parts by mass: (15-19).
7. Use of the preparation process as claimed in claim 5 or 6 for improving the stability of inks.
8. Use of the preparation process as claimed in claim 5 or 6 for improving the hiding power of inks.
9. Use of the preparation process according to claim 5 or 6 for improving the adhesion of inks.
10. Use of the process according to claim 5 or 6 for improving the scratch resistance of inks.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910860354.6A CN112480739A (en) | 2019-09-11 | 2019-09-11 | Flexographic plate water-based scraping black ink for instant billing and preparation method and application thereof |
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| CN201910860354.6A CN112480739A (en) | 2019-09-11 | 2019-09-11 | Flexographic plate water-based scraping black ink for instant billing and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114410150A (en) * | 2022-01-27 | 2022-04-29 | 广东阿诺捷喷墨科技有限公司 | UV-LED digital ink-jet silver scraping ink and spraying process thereof |
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2019
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| US5747555A (en) * | 1995-02-22 | 1998-05-05 | R. R. Donnelley & Sons Co. | Water-based publication gravure ink |
| CN1737068A (en) * | 2005-07-28 | 2006-02-22 | 中国印钞造币总公司 | Black fluorescent ink |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114410150A (en) * | 2022-01-27 | 2022-04-29 | 广东阿诺捷喷墨科技有限公司 | UV-LED digital ink-jet silver scraping ink and spraying process thereof |
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Application publication date: 20210312 |