A holographic film with a double-layer laser structure

Abstract

The present application relates to a holographic film with a double-layer laser structure, and relates to the technical field of laser anti-counterfeiting; it includes a first laser structure, a second laser structure and an intermediate base film, and the first laser structure and the second laser structure are respectively compounded on opposite sides of the intermediate base film; the first laser structure includes a first base film, a first transfer coating, a first laser information layer containing ordinary laser information, and a first dielectric layer compounded in sequence; the second laser structure includes a second base film, a second transfer coating, a second laser information layer containing deep structure laser information, and a second dielectric layer compounded in sequence; and the first base film and the second base film are arranged away from the intermediate base film. The present application has the function of further improving the anti-counterfeiting effect.

Description

Technical Field

[0001] The present application relates to the technical field of laser anti-counterfeiting, and in particular to a holographic film with a double-layer laser structure. Background Art

[0002] With the development of science and technology, anti-counterfeiting technology has become increasingly important in terms of product protection, security verification and intellectual property protection. Although traditional anti-counterfeiting methods, such as watermarks and thermal labels, have certain anti-counterfeiting effects, they are often easily copied or imitated, which reduces their security. At present, holographic laser anti-counterfeiting methods are widely used in the market. Holographic laser anti-counterfeiting patterns can be used to display brand patterns such as logos, which have the effect of beautifying the appearance of products. At the same time, anti-counterfeiting functions are achieved through holographic effects such as isotope, miniature, lens, and dynamic in the pattern.

[0003] However, with the improvement of technology, existing holographic laser anti-counterfeiting patterns can also be imitated, resulting in the difficulty in distinguishing counterfeit and shoddy products. Utility Model Content

[0004] In order to further improve the anti-counterfeiting effect, the present application provides a holographic film with a double-layer laser structure.

[0005] The holographic film with a double-layer laser structure provided in this application adopts the following technical solution:

[0006] A holographic film with a double-layer laser structure includes a first laser structure, a second laser structure and an intermediate base film, wherein the first laser structure and the second laser structure are respectively compounded on opposite sides of the intermediate base film; the first laser structure includes a first base film, a first transfer coating layer, a first laser information layer containing ordinary laser information, and a first dielectric layer compounded in sequence; the second laser structure includes a second base film, a second transfer coating layer, a second laser information layer containing deep structure laser information, and a second dielectric layer compounded in sequence; and the first base film and the second base film are arranged away from the intermediate base film.

[0007] By adopting the above-mentioned technical solution, using the first laser information layer containing ordinary laser information and the second laser information layer containing deep structure laser information, the first laser structure and the second laser can produce different laser effects, and through the first medium layer and the second medium layer, different laser effects can be presented at the same time, thereby increasing the visual three-dimensional effect of the anti-counterfeiting pattern for easy identification.

[0008] Preferably, the ordinary laser information is set as a double-beam interference shallow-grain laser, and the first transfer coating is formed by transferring the release coating onto the first base film, and the first laser information layer is formed by embossing the ordinary laser information onto the first transfer coating.

[0009] By adopting the above technical solution, the first laser information layer can produce a colorful effect through diffraction, and ordinary laser information can be imprinted on the first film by transferring the release coating.

[0010] Preferably, the deep structure laser information is set to single-beam direct-writing deep grain laser, and the second transfer coating is a release UV coating applied on the second base film and connected by molding, and the second laser information layer is formed by embossing the deep structure laser information on the second transfer coating.

[0011] By adopting the above technical solution, the pattern on the second laser information layer can have a concave-convex three-dimensional effect, and the deep structure laser information can be embossed on the second film through the release UV coating.

[0012] Preferably, the first dielectric layer is formed by vacuum plating zinc sulfide on a side of the first laser information layer away from the first base film using a vacuum plating machine.

[0013] By adopting the above technical solution, the first medium layer can protect the ordinary laser information, and the laser effect of the ordinary laser information can be enhanced by enhancing reflection.

[0014] Preferably, the second dielectric layer is formed by vacuum plating zinc sulfide on a side of the second laser information layer away from the second base film using a vacuum plating machine.

[0015] By adopting the above technical solution, the second dielectric layer can protect the deep structure laser information, and can enhance the laser effect of the deep structure laser information by enhancing reflection.

[0016] Preferably, the intermediate base film is a PET film, and the thickness of the intermediate base film is set to 40-50 μm.

[0017] By adopting the above technical solution, on the one hand, it can ensure that the holographic film is not prone to wrinkles or damage during use, and on the other hand, it can enable the first laser structure and the second laser structure with different laser effects to produce a sense of depth of field, thereby enhancing the visual three-dimensional effect of the anti-counterfeiting pattern.

[0018] Preferably, the first laser structure and the second laser structure are respectively composited on the intermediate base film via adhesive layers.

[0019] By adopting the above technical solution, the first laser structure and the second laser structure can be compounded on both sides of the intermediate base film by using the adhesive layer.

[0020] Preferably, the adhesive layer is formed by coating solvent-free dry glue on the first laser structure and the second laser structure.

[0021] By adopting the above technical solution, the first base film, the second base film and the intermediate base film can be composited by using solvent-free dry composite glue.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By using the first laser structure containing ordinary laser information and the second laser structure containing deep structure laser information, the holographic laser anti-counterfeiting pattern can have a three-dimensional visual effect on the holographic film, so that the anti-counterfeiting pattern can be easily identified;

[0024] 2. Ordinary laser information is formed by double-beam interference shallow-grain laser, and deep-structure laser information is formed by single-beam direct-writing deep-grain laser, so that the first laser structure and the second laser structure can present different laser effects, and both laser effects can be presented through the first medium layer and the second medium layer, increasing the depth of field so that the anti-counterfeiting pattern can be presented in three dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0026] Figure numerals: 1. first laser structure; 11. first base film; 12. first transfer coating layer; 13. first laser information layer; 14. first dielectric layer; 2. second laser structure; 21. second base film; 22. second transfer coating layer; 23. second laser information layer; 24. second dielectric layer; 3. intermediate base film; 4. adhesive layer. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 This application is described in further detail.

[0028] The embodiment of the present application discloses a holographic film with a double-layer laser structure.

[0029] Reference Figure 1 A holographic film with a double-layer laser structure includes a first laser structure 1, a second laser structure 2 and an intermediate base film 3, and the first laser structure 1 and the second laser structure 2 are respectively compounded on opposite sides of the intermediate base film 3, so that the upper and lower layers of laser can produce visual depth of field and increase the three-dimensional effect.

[0030] The first laser structure 1 includes a first base film 11, a first transfer coating 12, a first laser information layer 13 including ordinary laser information, and a first dielectric layer 14, which are compounded in sequence, and the first dielectric layer 14 is compounded on one side of the intermediate base film 3. The second laser structure 2 includes a second base film 21, a second transfer coating 22, a second laser information layer 23 including deep structure laser information, and a second dielectric layer 24, which are compounded in sequence, and the second dielectric layer 24 is compounded on the other side of the intermediate base film 3.

[0031] The structure of each layer is as follows:

[0032] The intermediate base film 3 has a certain thickness, and in this embodiment, the thickness of the intermediate base film 3 is set to 40-50 μm. On the one hand, it can ensure that the holographic film is not prone to wrinkles or damage during use, and on the other hand, by increasing the thickness, the first laser structure 1 and the second laser structure 2 with different laser effects can produce a sense of depth of field, thereby enhancing the visual three-dimensional effect of the anti-counterfeiting pattern.

[0033] The first base film 11 can be set to a transparent PVC film or PET film, etc. In this embodiment, a PET film is selected, and the thickness of the first base layer is 12~15μm. The ordinary laser information in the first laser structure 1 is set to a double-beam interference shallow laser, which can produce a colorful effect through diffraction, and the depth of the grating stripes is between 0.8~1.2μm. In order to achieve the imprinting of ordinary laser information, the release coating layer is formed by coating the transfer release coating on the first base film 11, and the dry coating amount is 1.1~1.5 g / m2, so that the first laser information layer 13 can be formed by imprinting the ordinary laser information on the side of the release coating layer away from the first base film 11.

[0034] The second base film 21 has the same structure as the first base film 11. The deep structure laser information in the second laser structure 2 is set to a single beam direct writing deep grain laser. The grating spacing is small so it can form a white light effect, and the pattern can have a concave and convex three-dimensional sense. The depth of this grating stripe is between 3 and 10 μm. In order to restore the deep structure laser information to the greatest extent, it is necessary to apply a release UV coating on the second base film 21 to form a second transfer coating 22 and connect the molding. The coating dry weight of the second transfer coating 22 is 8 to 10 g / m2, so that the deep structure laser information with a three-dimensional sense can be transferred to the second transfer coating.

[0035] Then, by using a vacuum plating machine, vacuum zinc sulfide is plated on the side of the first laser information layer 13 away from the first base film 11, thereby forming a first dielectric layer 14; and vacuum zinc sulfide is plated on the side of the second laser information layer 23 away from the second base film 21, thereby forming a second dielectric layer 24. The first dielectric layer 14 and the second dielectric layer 24 are used to protect the ordinary laser information and the deep structure laser information respectively, and can enhance the reflection to make the ordinary laser effect and the deep structure laser effect look brighter. At the same time, the first dielectric layer 14 and the second dielectric layer 24 can make the laser effects of the first laser structure 1 and the second laser structure 2 appear at the same time.

[0036] Adhesive layers 4 are provided on opposite sides of the intermediate base film 3. In this embodiment, the adhesive layers 4 are formed by coating solvent-free dry composite glue. The first base film 11 with ordinary laser information is composited on one side of the intermediate base film 3 through the adhesive layer 4, and the second base film 21 with deep structure laser information is composited on the other side of the intermediate base film 3 through the adhesive layer 4, and the first base film 11 and the second base film 21 are both located on the outside of the adhesive layer 4 away from the intermediate base film 3. The reason for using solvent-free dry composite glue in this embodiment is that ordinary composite water-based glue cannot penetrate into the interior of the PET film, so the purpose of composite PET film can be achieved through the self-adhesive chain generated inside the solvent-free dry composite glue.

[0037] After the first base film 11 with ordinary laser information and the second base film 21 with deep structure laser information are compounded to the intermediate base film 3, they are ripened. After the ripening is completed, the first base film 11 and the second base film 21 are peeled off.

[0038] The implementation principle of a holographic film with a double-layer laser structure in an embodiment of the present application is as follows: by arranging a first laser structure 1 containing ordinary laser information and a second laser structure 2 containing deep structure laser information on opposite sides of an intermediate base film 3, the holographic laser anti-counterfeiting pattern can have a three-dimensional visual effect on the holographic film, thereby facilitating the identification of the anti-counterfeiting pattern.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A holographic film with a double-layer laser structure, characterized in that: The invention comprises a first laser structure (1), a second laser structure (2) and an intermediate base film (3), wherein the first laser structure (1) and the second laser structure (2) are respectively compounded on opposite sides of the intermediate base film (3); the first laser structure (1) comprises a first base film (11), a first transfer coating (12), a first laser information layer (13) containing ordinary laser information, and a first dielectric layer (14) compounded in sequence; the second laser structure (2) comprises a second base film (21), a second transfer coating (22), a second laser information layer (23) containing deep structure laser information, and a second dielectric layer (24) compounded in sequence; and the first base film (11) and the second base film (21) are arranged away from the intermediate base film (3).

2. The holographic film with a double-layer laser structure according to claim 1, characterized in that: The common laser information is set as a double-beam interference shallow-grain laser, and the first transfer coating (12) is formed by coating a transfer release coating on the first base film (11), and the first laser information layer (13) is formed by embossing the common laser information on the first transfer coating (12).

3. The holographic film with a double-layer laser structure according to claim 1, characterized in that: The deep structure laser information is configured as a single beam direct writing deep grain laser, and the second transfer coating (22) is formed by coating a release UV coating on the second base film (21) and connecting and molding, and the second laser information layer (23) is formed by embossing the deep structure laser information on the second transfer coating (22).

4. The holographic film with a double-layer laser structure according to claim 1, characterized in that: The first dielectric layer (14) is formed by vacuum plating zinc sulfide on a side of the first laser information layer (13) away from the first base film (11) using a vacuum plating machine.

5. The holographic film with a double-layer laser structure according to claim 1, characterized in that: The second dielectric layer (24) is formed by vacuum plating zinc sulfide on a side of the second laser information layer (23) away from the second base film (21) using a vacuum plating machine.

6. The holographic film with a double-layer laser structure according to claim 1, characterized in that: The intermediate base film (3) is configured as a PET film, and the thickness of the intermediate base film (3) is configured to be 40-50 μm.

7. The holographic film with a double-layer laser structure according to claim 1, characterized in that: The first laser structure (1) and the second laser structure (2) are respectively composited on the intermediate base film (3) via an adhesive layer (4).

8. The holographic film with a double-layer laser structure according to claim 7, characterized in that: The adhesive layer (4) is configured to be formed by coating solvent-free dry adhesive on the first laser structure (1) and the second laser structure (2).

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