CN110591451A - Reflective anti-counterfeiting ink and preparation method and application thereof - Google Patents
Reflective anti-counterfeiting ink and preparation method and application thereof Download PDFInfo
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- CN110591451A CN110591451A CN201910871161.0A CN201910871161A CN110591451A CN 110591451 A CN110591451 A CN 110591451A CN 201910871161 A CN201910871161 A CN 201910871161A CN 110591451 A CN110591451 A CN 110591451A
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- counterfeiting ink
- counterfeiting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
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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
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
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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
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
-
- 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
- C09D11/50—Sympathetic, colour changing or similar inks
Abstract
The invention discloses a reflective anti-counterfeiting ink and a preparation method and application thereof, wherein the reflective anti-counterfeiting ink comprises the following components in percentage by weight: 6-18% of glass beads, 36-60% of waterborne polyurethane, 6-10% of purified water, 10-40% of absolute ethyl alcohol, 1-5% of dispersing agent, 2-3% of defoaming agent and 1-3% of anti-settling agent; weighing, preparing a solvent, stirring for the first time and stirring for the second time to obtain the reflective anti-counterfeiting ink; the light-reflecting anti-counterfeiting ink prepared by the invention can be applied to the aspect of screen printing. According to the invention, the glass beads are added into the reflective anti-counterfeiting ink, and the reflective anti-counterfeiting ink has a retro-reflection characteristic by utilizing the physical structure of the glass beads with high refractive index, so that the anti-counterfeiting effect is achieved. When the mobile phone flash shooting identification method is used, the printed image and text can be identified through the mobile phone flash shooting function, and the identification method is convenient and rapid and has interactivity.
Description
Technical Field
The invention relates to the technical field of printing ink, in particular to reflective anti-counterfeiting printing ink and a preparation method and application thereof.
Background
With the great improvement of social productivity level, the imitation technology is continuously developed, which causes various fake and fake products of mixed fish eyes to flow into the market, causes great influence on the good enterprises and seriously damages the order of market economy.
In order to attack the illegal behaviors of counterfeiting and counterfeiting, maintain the legitimate rights and interests of enterprises and consumers, promote the economic and healthy development of the market and establish the atmosphere of honest transactions, the anti-counterfeiting technology needs to be improved. The key of the anti-counterfeiting technology is to prolong the timeliness and uniqueness of the anti-counterfeiting technology, which is also the target of the pursuit of the anti-counterfeiting technology. Nowadays, various novel printing anti-counterfeiting technologies are continuously developed, and anti-counterfeiting measures also tend to be diversified. At present, printing anti-counterfeiting technologies such as ink anti-counterfeiting technology, printing material anti-counterfeiting technology, process anti-counterfeiting technology, digital anti-counterfeiting technology and the like are widely applied to the market. The anti-counterfeiting printing technology can be classified into dominant printing technology and recessive printing technology according to whether the anti-counterfeiting printing technology can be seen by naked eyes or not.
However, due to the improvement of the imitation technology and the popularization of the anti-counterfeiting ink in the market, the dominant anti-counterfeiting technology is likely to be imitated, and the invisible anti-counterfeiting technology is not convenient and quick enough because infrared and ultraviolet identification methods are mostly used.
Disclosure of Invention
The invention aims to provide a reflective anti-counterfeiting ink aiming at the defects in the prior art, the anti-counterfeiting ink has an anti-counterfeiting function by adding glass beads in the reflective anti-counterfeiting ink, and the identification method is convenient and rapid.
The invention also aims to provide a preparation method of the light-reflecting anti-counterfeiting ink.
The invention also aims to provide the application of the light-reflecting anti-counterfeiting ink in screen printing.
The purpose of the invention is realized by the following technical scheme:
the light-reflecting anti-counterfeiting ink comprises the following components in percentage by weight: 6-18% of glass beads, 36-60% of waterborne polyurethane, 6-10% of purified water, 10-40% of absolute ethyl alcohol, 1-5% of dispersing agent, 2-3% of defoaming agent and 1-3% of anti-settling agent.
Further, the weight percentages of the components are as follows: 6-10% of glass beads, 36-50% of waterborne polyurethane, 6-8% of purified water, 25-40% of absolute ethyl alcohol, 1-5% of dispersing agent, 2-3% of defoaming agent and 1-3% of anti-settling agent.
Further, the particle size of the glass beads is 350 ~ 500 meshes.
Further, the anti-settling agent is fumed silica.
In the invention, the fumed silica is added as an anti-settling agent, so that the glass beads can be prevented from settling or layering in the preparation process, and the texture of the reflective anti-counterfeiting ink is uniform.
Further, the dispersing agent is a sodium diisooctyl sulfosuccinate anionic surfactant.
The preparation method of the light-reflecting anti-counterfeiting ink is characterized by comprising the following steps:
s1, weighing: weighing the components of the reflective anti-counterfeiting ink according to a proportion;
s2, preparing a solvent: mixing purified water and absolute ethyl alcohol to obtain a solvent, adding waterborne polyurethane, and uniformly mixing;
s3, primary stirring: adding glass beads into the solution prepared in the step S1, and then stirring for the first time;
s4, secondary stirring: and (5) adding a dispersing agent, a defoaming agent and an anti-settling agent into the solution stirred in the step S2, and stirring for the second time to obtain the light-reflecting anti-counterfeiting ink.
Further, the process parameters of the primary stirring in the step S3 are that the stirring speed is 500 ~ 600r/min, and the stirring time is 20 ~ 30 min.
Further, the process parameters of the secondary stirring in the step S4 are that the stirring speed is 800 ~ 1000r/min, and the stirring time is 20 ~ 30 min.
An application of the light-reflecting anti-counterfeiting ink in screen printing.
Further, the mesh number of the screen in the screen printing is 100 ~ 300 meshes.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the glass beads are added into the reflective anti-counterfeiting ink, and the reflective anti-counterfeiting ink has a retro-reflection characteristic by utilizing the physical structure of the glass beads with high refractive index, so that the anti-counterfeiting effect is achieved.
The smaller the mesh number of the glass beads is, the larger the particle size is, and the better the light reflecting effect of the glass beads is; the smaller the particle size of the glass beads is, the poorer the light reflecting effect of the glass beads is; the visibility of the reflective anti-counterfeiting ink is influenced by the reflective effect of the glass beads. The invention adopts the invisible anti-counterfeiting technology, and adjusts the light reflection effect by controlling the particle size of the glass beads, so that the light reflection anti-counterfeiting ink can achieve the effects of being invisible under normal light and being visible under strong light irradiation such as flash lamp shooting. When the mobile phone flash shooting identification method is used, the printed image and text can be identified through the mobile phone flash shooting function, and the identification method is convenient and rapid and has interactivity.
According to the invention, the water-based dispersing agent and the anti-settling agent are added into the reflective anti-counterfeiting ink, so that the glass beads are uniformly dispersed in the ink, the regularity of the arrangement of the glass beads is improved, and the glass beads are prevented from being coagulated to influence the effect of subsequent screen printing. The anti-settling agent can effectively improve the settling problem of the glass beads after standing, so that the dispersibility of the glass beads in the ink is kept stable.
Drawings
FIG. 1 is an effect diagram of the printed image and text obtained in example 1 photographed under a flash lamp;
FIG. 2 is an effect diagram of the printed image and text obtained in example 1 taken under normal light;
FIG. 3 is an effect diagram of the printed image and text obtained in example 7 photographed under a flash lamp;
FIG. 4 is an image of the printed image obtained in example 7 taken under normal light;
FIG. 5 is a diagram showing the effect of the printed image and text obtained in comparative example 1 taken by a flash lamp;
fig. 6 is a graph showing the effect of the printed image obtained in comparative example 1 taken under normal light.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited to the following specific examples.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
Example 1
The embodiment provides a preparation method and application of reflective anti-counterfeiting ink, which specifically comprise the following steps:
s1, weighing: weighing the components of the light-reflecting anti-counterfeiting ink in proportion, wherein the weight percentage of each component is as follows: 6% of 500-mesh glass beads, 46% of waterborne polyurethane, 7% of purified water, 30% of absolute ethyl alcohol, 5% of diisooctyl sulfosuccinate sodium anionic surfactant, 3% of defoaming agent and 3% of fumed silica;
s2, preparing a solvent: mixing purified water and absolute ethyl alcohol to obtain a solvent, adding waterborne polyurethane, and uniformly mixing;
s3, primary stirring: adding glass beads into the solution prepared in the step S1, and then carrying out primary stirring at the stirring speed of 600r/min for 30 min;
s4, secondary stirring: adding a sodium diisooctyl sulfosuccinate anionic surfactant, a defoaming agent and an anti-settling agent into the solution stirred in the step S2, and stirring for a second time at the stirring speed of 1000r/min for 30min to obtain the light-reflecting anti-counterfeiting ink;
s5, applying the light-reflecting anti-counterfeiting ink prepared in the step S4 to screen printing, wherein the mesh number of the used screen is 300.
The printed images and texts obtained after the screen printing in this embodiment are respectively photographed under the irradiation of the flash lamp of the mobile phone and under the normal light, and the invisible effect of the reflective anti-counterfeiting ink under the normal light and the visible effect of the reflective anti-counterfeiting ink under the shooting of the flash lamp of the mobile phone are observed, and the results are respectively shown in fig. 1 and fig. 2.
Example 2
The embodiment provides a preparation method and application of reflective anti-counterfeiting ink, which specifically comprise the following steps:
s1, weighing: weighing the components of the light-reflecting anti-counterfeiting ink in proportion, wherein the weight percentage of each component is as follows: 10% of 400-mesh glass beads, 50% of waterborne polyurethane, 10% of purified water, 20% of absolute ethyl alcohol, 5% of diisooctyl sulfosuccinate sodium anionic surfactant, 3% of defoaming agent and 2% of fumed silica;
s2, preparing a solvent: mixing purified water and absolute ethyl alcohol to obtain a solvent, adding waterborne polyurethane, and uniformly mixing;
s3, primary stirring: adding glass beads into the solution prepared in the step S1, and then carrying out primary stirring at the stirring speed of 600r/min for 30 min;
s4, secondary stirring: adding a sodium diisooctyl sulfosuccinate anionic surfactant, a defoaming agent and an anti-settling agent into the solution stirred in the step S2, and stirring for a second time at a stirring speed of 800r/min for 20min to obtain the light-reflecting anti-counterfeiting ink;
s5, applying the light-reflecting anti-counterfeiting ink prepared in the step S4 to screen printing, wherein the mesh number of the used screen is 300.
Example 3
The embodiment provides a preparation method and application of reflective anti-counterfeiting ink, which specifically comprise the following steps:
s1, weighing: weighing the components of the light-reflecting anti-counterfeiting ink in proportion, wherein the weight percentage of each component is as follows: 18% of 450-mesh glass beads, 60% of waterborne polyurethane, 6% of purified water, 22% of absolute ethyl alcohol, 1% of diisooctyl sulfosuccinate sodium anionic surfactant, 2% of defoaming agent and 1% of fumed silica;
s2, preparing a solvent: mixing purified water and absolute ethyl alcohol to obtain a solvent, adding waterborne polyurethane, and uniformly mixing;
s3, primary stirring: adding glass beads into the solution prepared in the step S1, and then carrying out primary stirring at the stirring speed of 500r/min for 20 min;
s4, secondary stirring: adding a sodium diisooctyl sulfosuccinate anionic surfactant, a defoaming agent and an anti-settling agent into the solution stirred in the step S2, and stirring for a second time at the stirring speed of 1000r/min for 30min to obtain the light-reflecting anti-counterfeiting ink;
s5, applying the light-reflecting anti-counterfeiting ink prepared in the step S4 to screen printing, wherein the mesh number of the used screen is 300.
Example 4
The embodiment provides a preparation method and application of reflective anti-counterfeiting ink, which specifically comprises the following steps of referring to embodiment 1: 10% of 500-mesh glass beads, 60% of waterborne polyurethane, 6% of purified water, 10% of absolute ethyl alcohol, 1% of diisooctyl sulfosuccinate sodium anionic surfactant, 2% of defoaming agent and 1% of fumed silica.
Example 5
The embodiment provides a preparation method and application of reflective anti-counterfeiting ink, which specifically comprises the following steps of referring to embodiment 1: 12% of 500-mesh glass beads, 45% of waterborne polyurethane, 8% of purified water, 25% of absolute ethyl alcohol, 4% of diisooctyl sulfosuccinate sodium anionic surfactant, 3% of defoaming agent and 3% of fumed silica.
Example 6
The embodiment provides a preparation method and application of a reflective anti-counterfeiting ink, which specifically comprises the following steps of referring to embodiment 1, and is different from embodiment 1 in that the used glass beads are 350 meshes.
Example 7
The embodiment provides a preparation method and application of a reflective anti-counterfeiting ink, which specifically comprises the following steps of referring to embodiment 1, and the difference from embodiment 1 is that the mesh number of a silk screen used in step S5 is 100 meshes.
The printed images and texts obtained after the screen printing in this embodiment are respectively photographed under the irradiation of the flash lamp of the mobile phone and under the normal light, and the invisible effect of the reflective anti-counterfeiting ink under the normal light and the visible effect of the reflective anti-counterfeiting ink under the shooting of the flash lamp of the mobile phone are observed, and the results are respectively shown in fig. 3 and fig. 4.
Comparative example 1
The comparison example provides a preparation method and application of a reflective anti-counterfeiting ink, and the specific steps refer to example 1, and the difference from example 1 is that the used glass beads are 300 meshes.
The printed images and texts obtained after the screen printing in the comparison are shot under the irradiation of a flash lamp of a mobile phone and under the normal light respectively, and the invisible effect of the reflective anti-counterfeiting ink under the normal light and the visible effect of the reflective anti-counterfeiting ink under the shooting of the flash lamp of the mobile phone are observed, and the results are respectively shown in fig. 5 and fig. 6.
Comparative example 2
The comparison example provides a preparation method and application of a reflective anti-counterfeiting ink, and the specific steps refer to example 1, and the difference from example 1 is that the used glass beads are 600 meshes.
Comparative example 3
The comparative example provides a preparation method of a reflective anti-counterfeiting ink, which specifically comprises the following steps of referring to example 1, and is different from example 1 in that no dispersant is added in the comparative example, and specifically, the mass percentages of the components are as follows: 6% of 500-mesh glass beads, 46% of waterborne polyurethane, 7% of purified water, 35% of absolute ethyl alcohol, 3% of defoaming agent and 3% of fumed silica;
in the preparation process of the comparative example, after one-time stirring, the stripped microspheres in the solution cannot be dispersed and coagulated, most of the stripped microspheres are precipitated at the bottom of the solution, and the glass microspheres are poor in dispersibility and cannot be applied to screen printing.
Comparative example 4
The comparative example provides a preparation method of a reflective anti-counterfeiting ink, which specifically comprises the following steps of referring to example 1, and is different from example 1 in that an anti-settling agent is not added in the comparative example, and specifically, the mass percentages of the components are as follows: 6% of 500-mesh glass beads, 46% of waterborne polyurethane, 10% of purified water, 30% of absolute ethyl alcohol, 5% of diisooctyl sulfosuccinate sodium anionic surfactant and 3% of defoaming agent;
after the light-reflecting anti-counterfeiting ink prepared by the comparative example is kept still for 2 hours, the stripped microspheres in the ink begin to settle, and the dispersibility of the glass microspheres in the ink is unstable, so that the light-reflecting anti-counterfeiting ink cannot be applied to screen printing.
As shown in fig. 1 and 2, the light-reflecting anti-counterfeiting ink prepared in example 1 is invisible under normal light after being subjected to screen printing, and is visible under strong light shooting with a flash lamp, and the invisible effect of the light-reflecting anti-counterfeiting ink under normal light is good.
As shown in fig. 3 and 4, in example 7, a 100-mesh screen was used, the mesh diameter was large, the printed ink was thick, the invisible effect of the ink under normal light was affected, and the anti-counterfeit function was slightly inferior to that of example 1.
In contrast, in the document 1, the glass beads with 300 meshes are used, so that the particle size is large, and the light reflection effect of the glass beads is good; as shown in fig. 5 and 6, the reflective anti-counterfeiting ink prepared in comparative example 1 can be seen under normal light irradiation after screen printing, and cannot realize an anti-counterfeiting function.
In comparative example 2, the 600-mesh glass beads are used, the light reflection effect is weak, the light reflection effect is not obvious under normal light and strong light of a flash lamp, the light reflection effect is invisible, and the anti-counterfeiting function cannot be realized.
It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The light-reflecting anti-counterfeiting ink is characterized by comprising the following components in percentage by weight: 6-18% of glass beads, 36-60% of waterborne polyurethane, 6-10% of purified water, 10-40% of absolute ethyl alcohol, 1-5% of dispersing agent, 2-3% of defoaming agent and 1-3% of anti-settling agent.
2. The light-reflecting anti-counterfeiting ink according to claim 1, wherein the weight percentage of each component is as follows: 6-10% of glass beads, 36-50% of waterborne polyurethane, 6-8% of purified water, 25-40% of absolute ethyl alcohol, 1-5% of dispersing agent, 2-3% of defoaming agent and 1-3% of anti-settling agent.
3. The light-reflecting anti-counterfeiting ink according to claim 1, wherein the particle size of the glass beads is 350 ~ 500 meshes.
4. The light-reflecting anti-counterfeiting ink according to claim 1, wherein the anti-settling additive is fumed silica.
5. The light-reflecting anti-counterfeiting ink according to claim 1, wherein the dispersant is diisooctyl sulfosuccinate sodium anionic surfactant.
6. A method for preparing the reflective anti-counterfeiting ink according to any one of claims 1 ~ 5, comprising the following steps:
s1, weighing: weighing the components of the reflective anti-counterfeiting ink according to a proportion;
s2, preparing a solvent: mixing purified water and absolute ethyl alcohol to obtain a solvent, adding waterborne polyurethane, and uniformly mixing;
s3, primary stirring: adding glass beads into the solution prepared in the step S1, and then stirring for the first time;
s4, secondary stirring: and (5) adding a dispersing agent, a defoaming agent and an anti-settling agent into the solution stirred in the step S2, and stirring for the second time to obtain the light-reflecting anti-counterfeiting ink.
7. The method for preparing the light-reflecting anti-counterfeiting ink according to claim 6, wherein the process parameters of the primary stirring in the step S3 are that the stirring speed is 500 ~ 600r/min, and the stirring time is 20 ~ 30 min.
8. The method for preparing the light-reflecting anti-counterfeiting ink according to claim 6, wherein the process parameters of the secondary stirring in the step S4 are that the stirring speed is 800 ~ 1000r/min, and the stirring time is 20 ~ 30 min.
9. Use of the reflective security ink of any one of claims 1 ~ 5 in screen printing.
10. The use according to claim 9, characterized in that the mesh number in the screen printing is 100 ~ 300 mesh.
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| 《神奇的科学奥秘》编委会: "《材料科学的奥秘》", 30 September 2016, 中国社会出版社 * |
| 刘波等: "玻璃微珠在纳米材料多通道激光成像技术中的性能分析", 《玻璃与搪瓷》 * |
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|---|---|
| CN110591451B (en) | 2022-05-31 |
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