阅读说明：本技术 一种反光防伪油墨及其制备方法和应用 (Reflective anti-counterfeiting ink and preparation method and application thereof ) 是由 钟云飞 崔子杰 刘丹飞 尚咪 游诗英 于 2019-09-16 设计创作，主要内容包括：本发明公开了一种反光防伪油墨及其制备方法和应用,反光防伪油墨包括以下重量百分比的组分：玻璃微珠6～18%、水性聚氨酯36～60%、纯净水6～10%,无水乙醇10～40%、分散剂1～5%、消泡剂2～3%、防沉剂1～3%；经称重、制备溶剂、一次搅拌、二次搅拌后得反光防伪油墨；本发明制备的反光防伪油墨可应用于丝网印刷方面。本发明在反光防伪油墨中加入玻璃微珠,利用玻璃微珠具有高折射率的物理结构,使反光防伪油墨具有回归反射的特性,达到防伪的效果。在使用时,通过手机闪光拍摄功能即可识别印刷图文,鉴定方法方便快捷,具有互动性。(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.)

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.

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.