Preparation method of reflective colorful anti-counterfeiting pattern on surface of packaging product and packaging product thereof

Abstract

The invention relates to the technical field of packaging anti-counterfeiting, in particular to a preparation method of a reflective colorful anti-counterfeiting pattern on the surface of a packaging product and the packaging product thereof.The preparation method comprises the steps that S1, a base film is selected, the surface of the base film is coated with a layer of bead planting glue, then a layer of glass beads are evenly scattered on the surface of the bead planting glue, and after the glass beads are cured, a bead planting film is obtained; s2, the bead planting film is fed into vacuum coating equipment, the surface of the bead planting film is coated with a vacuum coating, and the reflective colorful film is obtained after the vacuum coating is cured; s3, uniformly coating the surface of the vacuum plating layer of the reflective colorful film with a layer of transfer printing glue; s4, the reflective colorful film is transferred to the surface of the packaging product; according to the preparation method of the reflective colorful anti-counterfeiting pattern, a traditional gold stamping mode is abandoned, a plating layer with an interference effect on light is evaporated on the surface of a plant film, then the plant film is transferred to the surface of a packaging product, the appearance grade of the packaging product is greatly improved, and the anti-counterfeiting effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging anti-counterfeiting, and in particular to a method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a package and a packaged product thereof. Background Art

[0002] When designing some high-end gift boxes, wine boxes, cigarette boxes and other packaging products on the market, it is necessary to hot-stamp an anti-counterfeiting pattern on the outer surface. On the one hand, it can improve the appearance of the entire packaging box, and on the other hand, it can increase the technical difficulty of counterfeiting the packaging box, thereby achieving an anti-counterfeiting effect.

[0003] At present, most of the anti-counterfeiting patterns on social packaging products in my country are realized by hot stamping film technology. The hot stamping film uses laser hot stamping paper as raw material, and transfers the pattern or text to the surface of the packaging by combining heating and pressurization. There are many types of hot stamping paper materials in laser hot stamping film, including not only monochrome laser hot stamping paper, but also multi-color or colorful laser hot stamping paper.

[0004] For example, the invention patent with application number 2022106721198 discloses a method for hot stamping a multi-color rainbow gradient pattern effect on paper packaging, which method includes: (1) after the laser hot stamping film is produced, use a gravure printing machine to print multi-color ink on the laser hot stamping film; (2) use a screen printing machine to print embossed ink on the surface of the paper product and semi-curing; (3) install the hot stamping film with multi-color rainbow gradient colors on the laminating machine, and then put the paper product printed with embossed ink on the laminating machine and press and feed the paper to complete the hot stamping. The hot stamping film anti-counterfeiting technology disclosed in this patent is to perform a deep color treatment on the laser hot stamping film based on the existing technology, that is, to print multi-color ink on the laser hot stamping film, so that the laser hot stamping film can have a multi-color rainbow gradient effect, which increases the appearance of the packaging product to a certain extent. However, the multi-color rainbow gradient of the pattern is achieved based on the absorption and reflection of light by the multi-color ink itself, resulting in its color being limited to the color rendered by the ink itself, and being unable to show the appearance of more colors. In addition, the multi-color rainbow gradient pattern is limited by the laser hot stamping film itself and does not have a reflective and colorful effect, resulting in the rainbow gradient color rendered under poor lighting conditions not being obvious, ultimately making it not very ideal in improving the appearance of the packaged product and increasing the difficulty of anti-counterfeiting. Therefore, in view of the shortcomings of the existing hot stamping film technology in improving the appearance of the packaged product and increasing the difficulty of anti-counterfeiting, the present application proposes a new method for preparing a reflective and colorful anti-counterfeiting pattern on the surface of the packaged product and a packaged product using the anti-counterfeiting pattern. Summary of the invention

[0005] The technical problem to be solved by the present invention is to address the shortcomings of the existing social packaging products that use laser hot stamping technology to manufacture packaging anti-counterfeiting patterns, and provide a new method for preparing a reflective and colorful anti-counterfeiting pattern on the surface of packaging products and packaging products using the anti-counterfeiting pattern.

[0006] The present invention is achieved through the following technical solutions: A method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a packaged product, comprising the following steps: S1: Select a base film, evenly stick a layer of glass beads on the surface of the base film, and wait for it to solidify to obtain a bead-embedded film; S2: sending the bead-planted film into a vacuum coating device, coating the surface of the bead-planted film with a vacuum coating layer that has an interference effect on light, and obtaining a reflective colorful film; S3: evenly apply a layer of transfer glue on the vacuum-plated surface of the reflective colorful film, and wait for it to solidify and set; S4: The transfer glue layer on the reflective colorful film is brought into contact with the surface of the packaged product to complete the pattern transfer. After the transfer is completed, the base film can be torn off.

[0007] As a further configuration of the above scheme, a layer of transparent glue is first evenly coated on the surface of the bead-planting film prepared in step 1, and then the transparent glue is sent to the vacuum coating equipment after solidification, and then a vacuum coating is plated on the surface of the transparent glue layer, and a reflective colorful film is obtained after solidification. The above method of coating a layer of transparent glue on the surface of the glass bead layer before vacuum coating can make the surface of the entire bead-planting film smoother, and make the coating thickness in the subsequent vacuum coating process easier to control and adjust, so that the prepared reflective colorful film has better effect, and various colorful patterns of film surfaces can be made according to requirements.

[0008] As a further configuration of the above scheme, the glass beads in step 1 are bonded to the glass beads after being melted by hot air through the plant glue or PE film. The above are two methods of planting bead film plants, but are not limited to the above two methods.

[0009] As a further configuration of the above scheme, the bead-embedding glue, transparent glue and transfer glue are cured by drying or ultraviolet radiation. The above specific glue is selected according to the curing process equipment.

[0010] As a further configuration of the above scheme, the pattern transfer method in step 4 includes one of screen printing, relief printing, convex roller printing, gravure printing, concave roller printing or three-dimensional printing. In addition, other methods that can transfer the coating on the film material to the substrate can replace the pattern transfer methods such as screen printing, relief printing or gravure printing.

[0011] As a further configuration of the above scheme, the material of the vacuum coating is one of zinc sulfide, silicon dioxide, magnesium fluoride, tin oxide, tantalum pentoxide, pure aluminum, pure silver, pure gold, brass or copper. The specific material selection of the vacuum coating includes but is not limited to the above-mentioned ones.

[0012] As a further configuration of the above scheme, the base film is one of PET film, PE film, PP film, PVC film, and EVA film, and the specific material selection of the base film includes but is not limited to the above-mentioned ones.

[0013] As a further configuration of the above scheme, the refractive index of the glass microbeads in step 1 is 1.90-1.93, and the size of the glass microbeads is controlled between 300-400 meshes.

[0014] The present invention also discloses a packaged product with a reflective colorful anti-counterfeiting pattern. The reflective colorful anti-counterfeiting pattern on the surface of the packaged product is prepared by the above-mentioned preparation method.

[0015] Specifically, the packaging product is any one of a cigarette box, a wine box, a tea box, an electronic product packaging box, a jewelry gift box, a medicine box or a cosmetic packaging box. The types of specific packaging products include but are not limited to the above-mentioned types.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The method for preparing a reflective colorful anti-counterfeiting pattern disclosed in the present invention abandons the traditional laser hot stamping method, and adopts the method of vapor-depositing a coating that interferes with light on the surface of a plant film, and then transferring it to the surface of a packaged product according to the shape of the pattern, so that the transferred pattern not only has a multi-color colorful appearance effect, but also has good reflective brightening properties under the action of glass microbeads, so that in weak light conditions, it can show an appearance effect that the hot stamping method does not have. It not only greatly improves the appearance grade of the packaged product, but also has great difficulty in imitation technology and better anti-counterfeiting effect.

[0017] 2. The present invention further optimizes the design of the method for preparing reflective colorful anti-counterfeiting patterns. Before the vacuum evaporation of the bead film, a layer of transparent glue is first applied to make the film surface smoother, and then the coating is vacuum evaporated on the surface of the transparent glue. This effectively solves the problem that the thickness of the coating cannot be accurately controlled due to the uneven surface of the glass beads, so that the effect of the anti-counterfeiting pattern finally transferred to the packaging can be adjusted according to customer needs, with better and more color rendering effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 The present invention is a process flow chart of the method for preparing the reflective colorful anti-counterfeiting pattern on the surface of the packaged product. DETAILED DESCRIPTION

[0020] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0021] Example 1 discloses a method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a wine box, and the specific steps thereof consist of two major steps: preparing a reflective colorful film and transfer-molding the reflective colorful anti-counterfeiting pattern.

[0022] First, the preparation of the reflective colorful film includes the following steps: A metallocene PE film is selected as the base film, and a layer of bead-embedded glue is evenly coated on its surface by a glue coating machine during the traction process of the base film. After the bead-embedded glue is coated and a layer of glass beads is evenly sprinkled on the surface during the continued traction process, the base film is finally sent to a drying channel for drying and curing, and then rolled up to obtain the bead-embedded film; the refractive index of the glass beads is 1.90-1.93, and the size of the glass beads is controlled between 300-400 meshes.

[0023] The roll of implanted bead film is placed on the discharge roller of the vacuum coating equipment, and then pulled into the vacuum evaporation chamber. Zinc sulfide is used as a target material to be plated on the surface of the glass beads of the implanted bead film through vacuum evaporation technology. Finally, after cooling and solidification, the reflective colorful film is obtained.

[0024] Second, the reflective colorful anti-counterfeiting pattern transfer molding steps are as follows: The reflective colorful film is pulled through the glue coating machine, and a layer of transfer glue is evenly coated on its surface. Then it is dried and solidified in the drying channel and then cut to obtain a finished reflective colorful film material similar to double-sided glue.

[0025] Select the silk screen screen with the corresponding pattern, put the finished reflective colorful film into the silk screen screen, put the substrate (i.e. the wine box cover) under the silk screen screen, start the silk screen printing machine to complete the transfer and forming of the anti-counterfeiting pattern, and finally tear off the base film.

[0026] Compared with the traditional hot stamping anti-counterfeiting pattern, the wine box prepared in Example 1 and the reflective colorful anti-counterfeiting pattern on its surface can not only show different colors at different angles, with a very colorful effect, but also have a reflective brightening effect in a weak light environment, and can show an appearance effect that traditional hot stamping film does not have, and has extremely high anti-counterfeiting performance. Example 2

[0027] Example 2 discloses a method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a cigarette box, and the specific steps thereof consist of two major steps: preparing a reflective colorful film and transfer-molding the reflective colorful anti-counterfeiting pattern.

[0028] First, the preparation of the reflective colorful film includes the following steps: A PET film is selected as the base film, and after being compounded with a PE film, the PET film is pulled together into a hot air device for hot air heating to melt the PE film. Then, during the pulling process, a layer of glass beads is evenly sprinkled on the molten surface of the PE film, and finally, the bead-planted film is obtained after cooling and solidification. The refractive index of the glass beads is 1.90-1.93, and the size of the glass beads is controlled between 300-400 meshes.

[0029] Before the plant film is cured and rolled up, a layer of transparent glue is evenly coated on the surface of the glass beads using a glue coating machine, and then the film is cured by ultraviolet radiation and rolled up for use. It should be noted that the transparent glue in this embodiment 2 is UV glue.

[0030] c. Place the bead-planting film roll onto the discharge roller of the vacuum coating equipment, and then pull it into the vacuum evaporation chamber. Use vacuum evaporation technology to coat magnesium fluoride as a target material on the surface of the glass beads of the bead-planting film. Finally, after cooling and solidification, the reflective colorful film is obtained.

[0031] Second, the reflective colorful anti-counterfeiting pattern transfer molding steps are as follows: d. The reflective colorful film is pulled through the glue coating machine, and a layer of transfer glue is evenly coated on its surface. Then it is dried and solidified in the drying channel and then cut to obtain a finished reflective colorful film material similar to double-sided glue.

[0032] e. Select the silk screen printing screen with the corresponding pattern, put the finished reflective colorful film into the silk screen printing screen, then put the substrate (i.e. the paper surface of the cigarette box) under the silk screen printing screen, and then start the silk screen printing machine to complete the transfer and molding of the anti-counterfeiting pattern, and finally tear off the base film.

[0033] Compared with Example 1, before evaporating the vacuum coating on the surface of the bead-planting film, this Example 2 first applies a layer of transparent glue and solidifies it, so that the surface of the bead-planting film is flat and smooth, and then in the subsequent vacuum coating process, the thickness of the vacuum coating can be more easily controlled and adjusted. According to the interference effect of the magnesium fluoride coating on light, the desired reflective and colorful effect can be more easily achieved by adjusting the thickness of the vacuum coating. Example 3

[0034] Example 3 discloses a method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a jewelry gift box, and the specific steps thereof consist of two major steps: preparing a reflective colorful film and transferring and molding the reflective colorful anti-counterfeiting pattern.

[0035] First, the preparation of the reflective colorful film includes the following steps: a. PP film is selected as the base film. During the traction process of the base film, a layer of bead glue is evenly coated on its surface by a glue coating machine. After the bead glue coating is completed and during the traction process, a layer of glass beads is evenly sprinkled on the surface, and finally sent to the drying channel for drying and curing; the refractive index of the glass beads is 1.90-1.93, and the size of the glass beads is controlled between 300-400 meshes.

[0036] b. Before the plant film is dried, solidified and rolled up, use the glue coating machine to evenly apply a layer of transparent glue on the surface of the glass beads, and then dry and solidify it in the drying channel and roll it up for use.

[0037] c. Place the bead-planting film roll onto the discharge roller of the vacuum coating equipment, and then pull it into the vacuum evaporation chamber. Use vacuum evaporation technology to coat tantalum pentoxide as a target material on the surface of the glass beads of the bead-planting film. Finally, after cooling and solidification, the reflective colorful film is obtained.

[0038] Second, the reflective colorful anti-counterfeiting pattern transfer molding steps are as follows: d. The reflective colorful film is pulled through the glue coating machine, and a uniform layer of transfer glue is coated on its surface. Then, it is dried and solidified in the drying channel to obtain a reflective colorful film product similar to double-sided glue.

[0039] e. Select the corresponding pattern of the printing convex plate, place the substrate (i.e. the jewelry gift box cardboard) in the convex plate printing machine, and then pull the finished reflective colorful film material between the printing convex plate and the substrate for convex plate printing. After the anti-counterfeiting pattern is transferred and formed, tear off the base film.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a packaged product, characterized in that: The steps include: S1: Select a base film, evenly stick a layer of glass beads on the surface of the base film, and wait for it to solidify to obtain a bead-embedded film; S2: sending the bead-planted film into a vacuum coating device, coating the surface of the bead-planted film with a vacuum coating layer that has an interference effect on light, and obtaining a reflective colorful film; S3: evenly apply a layer of transfer glue on the vacuum-plated surface of the reflective colorful film, and wait for it to solidify and set; S4: The transfer glue layer on the reflective colorful film is brought into contact with the surface of the packaged product to complete the pattern transfer. After the transfer is completed, the base film can be torn off.

2. The method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a packaged product according to claim 1, characterized in that: A layer of transparent glue is evenly coated on the surface of the bead-planting film prepared in step 1, and then the transparent glue is sent to a vacuum coating device after solidification, and then a vacuum coating is coated on the surface of the transparent glue layer to obtain a reflective colorful film.

3. The method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a packaged product according to claim 2, characterized in that: The glass microbeads in step 1 are bonded to the glass microbeads after being melted by hot air through the plant glue or PE film.

4. The method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a packaged product according to claim 3, characterized in that: The bead-embedding glue, transparent glue and transfer glue are cured by drying or ultraviolet radiation.

5. The method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a packaged product according to claim 1, characterized in that: The pattern transfer method in step 4 includes one of screen printing, relief printing, convex roller printing, gravure printing, concave roller printing or three-dimensional printing.

6. The method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a packaged product according to claim 1, characterized in that: The material of the vacuum coating is one of zinc sulfide, magnesium fluoride, silicon dioxide, tin oxide, tantalum pentoxide, pure aluminum, pure silver, pure gold, brass or copper.

7. The method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a packaged product according to claim 1, characterized in that: The base film is one of PET film, PE film, PP film, PVC film and EVA film.

8. The method for preparing a reflective colorful anti-counterfeiting pattern on the surface of a packaged product according to claim 1, characterized in that: The refractive index of the glass microspheres in step 1 is 1.90-1.93, and the size of the glass microspheres is controlled between 300-400 meshes.

9. A packaged product with a reflective colorful anti-counterfeiting pattern, characterized in that: The reflective colorful anti-counterfeiting pattern on the surface of the packaged product is prepared by the preparation method described in any one of claims 1 to 8.

10. The packaged product according to claim 9, characterized in that: The packaged product is any one of a cigarette box, a wine box, a tea box, an electronic product box, a jewelry gift box, a medicine box or a cosmetics box.

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