Laser anti-counterfeiting composite film

Abstract

The utility model discloses a laser anti -fake composite film relates to laser film technical field, including base material still includes laser mechanism and discrete mechanism, laser mechanism includes aluminize layer, aluminize layer composite bonding is in the top of base material, aluminize layer top composite bonding has laser anti -fake layer, laser anti -fake layer top equidistance is equipped with a plurality of light -reflecting ball, the outside bonding of light -reflecting ball top has reinforcing layer, reinforcing layer top composite bonding has surface printing layer, laser anti -fake layer surface is equipped with the anti -fake pattern formed by micro -nano structure, the depth of micro -nano structure is 50 500nm, and the anti -fake pattern is the dominant pattern that naked eye can see. The utility model discloses through the anti -fake pattern of micro -nano structure makes laser film have good anti -fake effect, and reinforcing layer can reinforce light -reflecting ball, can avoid the ink drop of laser anti -fake layer surface simultaneously, through the setting through optical reflection principle enhancement laser film's visual effect of light -reflecting ball.

Description

Technical Field

[0001] This utility model relates to the field of laser film technology, specifically to a laser anti-counterfeiting composite film. Background Technology

[0002] Laser composite film is a thin-film packaging material with a laser-like surface. Materials include PET, OPP, BOPP, and PVC, with main types including laser-metallized film, laser dielectric film, laser transparent film, and laser rainbow film. This material is coated and then molded to create specific laser effects. The pattern is determined by the molding die on the molding machine. It is widely used in the packaging of products such as candy, food, toys, gifts, clothing, tobacco and alcohol, pharmaceuticals, and cosmetics.

[0003] A laser anti-counterfeiting composite film, disclosed in CN210590903U, includes an aluminum-plated layer, with PE film layers at both the top and bottom of the aluminum-plated layer. A PET film layer is placed on top of the PE film layer, and a coating layer is placed at the bottom of the PET film layer. A paper layer is placed at the bottom of the PE film layer, also at the bottom of the aluminum-plated layer. This invention provides double-layer protection and insulation for food by placing PE film layers on top of the aluminum-plated layer, preventing external heat from easily affecting the object. This results in better heat insulation and insulation, solving the problem that existing laser anti-counterfeiting composite films, which only rely on a PET layer for protection and while offering good airtightness and aroma retention, have poor heat insulation and insulation effects, reducing their practicality. Furthermore, this laser anti-counterfeiting composite film also has excellent heat and cold resistance, making it convenient for users.

[0004] The existing technology has the following shortcomings: the reflective effect of the existing laser composite film is not good during use, which will affect the visual effect of the laser composite film. Moreover, in actual use, the laser film does not have good anti-counterfeiting technology, which makes it easy for defective or counterfeit products to be packaged when the laser film is used in the packaging field. Utility Model Content

[0005] The purpose of this invention is to provide a laser anti-counterfeiting composite film. The anti-counterfeiting pattern with micro-nano structure gives the laser film a good anti-counterfeiting effect. The reinforcing layer can reinforce the reflective ball and prevent the ink on the surface of the laser anti-counterfeiting layer from falling off. The reflective ball enhances the visual effect of the laser film through the principle of optical reflection, thereby solving the above-mentioned shortcomings in the technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a laser anti-counterfeiting composite film, comprising a substrate, and further comprising: A laser mechanism located on the top of the substrate and a discrete mechanism located on the bottom of the substrate; The laser mechanism includes an aluminum-plated layer, which is bonded to the top of a substrate. A laser anti-counterfeiting layer is bonded to the top of the aluminum-plated layer. Multiple reflective spheres are fixedly installed at equal intervals on the top of the laser anti-counterfeiting layer. A reinforcing layer is bonded to the outer side of the top of each reflective sphere. A surface printing layer is bonded to the top of the reinforcing layer. The surface of the laser anti-counterfeiting layer has an anti-counterfeiting pattern formed by a micro-nano structure. The depth of the micro-nano structure is 50-500nm. The anti-counterfeiting pattern is set as a visible pattern.

[0007] Preferably, the discrete mechanism includes an adhesive layer, which is fixedly coated on the bottom of the substrate, and the discrete layer is movably bonded to the bottom of the adhesive layer.

[0008] Preferably, a traction belt is fixedly connected to one side of the outer wall of the discrete layer, the adhesive layer is a polyurethane adhesive layer with a thickness of 2-5 μm, and the discrete layer is made of polypropylene.

[0009] Preferably, the laser anti-counterfeiting layer is made of UV-curable resin with a thickness of 1-5 μm. The UV-curable resin comprises the following components by weight: 50-70 parts of acrylate prepolymer, 20-30 parts of reactive diluent, 3-5 parts of photoinitiator, and 1-3 parts of nano-metal particles.

[0010] Preferably, the nano-metal particles are aluminum, silver, or copper nanoparticles with a particle size of 20-100 nm, and the micro / nano structure is a grating structure, a holographic array, or a combination of both, with the grating structure having a line density of 500-2000 lines / mm.

[0011] Preferably, the substrate is a polyethylene terephthalate film with a thickness of 12-50 μm, the reflective spheres are configured as hemispherical structures, and the plurality of reflective spheres are configured as an array of glass microspheres with a refractive index of 1.9, and the top of the surface printing layer is coated with a wear-resistant coating.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: The anti-counterfeiting pattern formed by the micro-nano structure gives the laser film a good anti-counterfeiting effect, which can prevent the packaging of defective or counterfeit products when it is used in the packaging field, thus ensuring the quality of the packaged products. At the same time, the reflective ball can enhance the visual effect of the laser film, and the reinforcement layer can fix the reflective ball and prevent the ink on the surface of the laser anti-counterfeiting layer from peeling off. The traction belt allows the discrete layer of the laser composite film to be easily detached from the bottom of the adhesive layer during use. At the same time, the surface printing layer can create a color contrast with the laser area of ​​the laser anti-counterfeiting layer, which can enhance the visual effect of the laser film. Furthermore, the surface printing layer is coated with a wear-resistant coating, which can extend the service life of the laser film. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a partial sectional view of the present invention.

[0016] Figure 3 This utility model Figure 2 Enlarged view of part A in the image.

[0017] Figure 4 This is an exploded view of the internal structure of this utility model.

[0018] Explanation of reference numerals in the attached figures: Substrate; Laser mechanism; 201, aluminum plating layer; 202, laser anti-counterfeiting layer; 203, reflective ball; 204, reinforcing layer; 205, surface printing layer; 3. Discrete mechanism; 301. Adhesive layer; 302. Discrete layer; 303. Traction belt. Detailed Implementation

[0019] This utility model provides, for example Figure 1 The laser anti-counterfeiting composite film shown includes a substrate 1, and further includes: The laser mechanism 2 is located on the top of the substrate 1 and the discrete mechanism 3 is located on the bottom of the substrate 1.

[0020] To ensure that the laser composite film has good anti-counterfeiting and visual effects, such as Figure 1-4As shown, the laser mechanism 2 includes an aluminum-plated layer 201, which is bonded to the top of the substrate 1. A laser anti-counterfeiting layer 202 is bonded to the top of the aluminum-plated layer 201. Multiple reflective balls 203 are fixedly installed at equal intervals on the top of the laser anti-counterfeiting layer 202. A reinforcing layer 204 is bonded to the outer side of the top of the reflective balls 203. A surface printing layer 205 is bonded to the top of the reinforcing layer 204. The surface of the laser anti-counterfeiting layer 202 has an anti-counterfeiting pattern formed by a micro-nano structure. The depth of the micro-nano structure is... The wavelength is 50-500nm, and the anti-counterfeiting pattern is a visible pattern. The anti-counterfeiting pattern formed by the micro-nano structure gives the laser anti-counterfeiting layer 202 a good anti-counterfeiting effect. At the same time, the reflective ball 203 can enhance the reflective effect of the laser anti-counterfeiting layer 202, thereby enhancing the visual effect of the laser composite film. The reinforcing layer 204 is set as a butyraldehyde resin protective layer, which can fix the reflective ball 203 and prevent the ink on the surface of the laser anti-counterfeiting layer 202 from peeling off.

[0021] To facilitate the use of laser composite films, such as Figure 1-2 and Figure 4 As shown, the discrete mechanism 3 includes an adhesive layer 301, which is fixedly coated on the bottom of the substrate 1. A discrete layer 302 is movably bonded to the bottom of the adhesive layer 301. A traction belt 303 is fixedly connected to the outer wall of one side of the discrete layer 302. The adhesive layer 301 is a polyurethane adhesive layer with a thickness of 2-5 μm. The discrete layer 302 is made of polypropylene. The traction belt 303 can pull and stretch the discrete layer 302, so that the discrete layer 302 can be easily detached from the bottom of the adhesive layer 301. This allows the laser composite film to be easily fixed to the outside of the packaging box through the adhesive layer 301.

[0022] To ensure the anti-counterfeiting pattern on the laser film has a good anti-counterfeiting effect, such as Figure 2-4 As shown, the laser anti-counterfeiting layer 202 is made of UV-curable resin with a thickness of 1-5 μm. The UV-curable resin includes the following components by weight: 50-70 parts of acrylate prepolymer, 20-30 parts of reactive diluent, 3-5 parts of photoinitiator, and 1-3 parts of nano-metal particles. The nano-metal particles are aluminum, silver, or copper nanoparticles with a particle size of 20-100 nm. The micro-nano structure is a grating structure, a holographic array, or a combination of both. The linear density of the grating structure is 500-2000 lines / mm. The UV-curable resin can fix the micro-nano structure, making it stable inside the laser anti-counterfeiting layer 202, thereby giving the micro-nano structure a good anti-counterfeiting effect.

[0023] To achieve better visual effects with laser film, such as Figure 2-4As shown, the substrate 1 is a polyethylene terephthalate film with a thickness of 12-50 μm. The reflective spheres 203 are configured as hemispherical structures, and multiple reflective spheres 203 are configured as an array of glass microspheres with a refractive index of 1.9. The top of the surface printing layer 205 is coated with a wear-resistant coating. The multiple reflective spheres 203 formed by the glass microsphere array can improve the reflective effect of the laser anti-counterfeiting layer 202, thereby enhancing the visual effect of the laser composite film.

[0024] In the production of the laser composite film, an aluminum-plated layer 201 is laminated and bonded to the top of a substrate 1 supported by a polyethylene terephthalate film. Then, a UV-curable resin is prepared according to the weight composition of 50-70 parts acrylate prepolymer, 20-30 parts reactive diluent, 3-5 parts photoinitiator, and 1-3 parts nano-metal particles. A micro-nano structured anti-counterfeiting pattern is then laminated onto the surface of the UV-curable resin to form a laser anti-counterfeiting layer 202. Simultaneously, multiple reflective spheres 203 formed by an array of glass microspheres with a refractive index of 1.9 are bonded to the top of the laser anti-counterfeiting layer 202. A reinforcing layer 204 made of butyraldehyde resin is then adhered to the outside of the reflective spheres 203 and the top of the laser anti-counterfeiting layer 202 to fix the reflective spheres 203 and prevent the ink on the surface of the laser anti-counterfeiting layer 202 from peeling off. Finally, a surface coating is bonded to the top of the reinforcing layer 204. A surface printing layer 205 is used to create a color contrast between the pattern on its surface and the pattern on the surface of the laser anti-counterfeiting layer 202. A wear-resistant coating is then applied to the surface of the surface printing layer 205 to protect the laser composite film and prevent damage to its surface. A polyurethane adhesive layer forming an adhesive layer 301 is then applied to the bottom of the substrate 1. A discrete layer 302 made of polypropylene is adhered to the bottom of the adhesive layer 301. A traction strap 303 extending beyond the substrate 1 is fixedly connected to one side of the discrete layer 302. When using the laser film, the discrete layer 302 can be easily detached from the bottom of the adhesive layer 301 using the traction strap 303, allowing the laser composite film to be easily installed onto the surface of the packaging box via the adhesive layer 301. This embodiment specifically solves the problem of poor anti-counterfeiting effect and visual effect of laser composite films in the prior art.

[0025] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A laser anti-counterfeiting composite film, comprising a substrate (1), characterized in that, Also includes: A laser mechanism (2) is provided on the top of the substrate (1) and a discrete mechanism (3) is provided on the bottom of the substrate (1). The laser mechanism (2) includes an aluminum-plated layer (201), which is bonded to the top of the substrate (1). A laser anti-counterfeiting layer (202) is bonded to the top of the aluminum-plated layer (201). Multiple reflective balls (203) are fixedly installed at equal intervals on the top of the laser anti-counterfeiting layer (202). A reinforcing layer (204) is bonded to the outer side of the top of the reflective balls (203). A surface printing layer (205) is bonded to the top of the reinforcing layer (204). The surface of the laser anti-counterfeiting layer (202) is provided with an anti-counterfeiting pattern formed by a micro-nano structure. The depth of the micro-nano structure is 50-500nm. The anti-counterfeiting pattern is set as a visible pattern.

2. The laser anti-counterfeiting composite film according to claim 1, characterized in that: The discrete mechanism (3) includes an adhesive layer (301), which is fixedly coated on the bottom of the substrate (1), and a discrete layer (302) is movably bonded to the bottom of the adhesive layer (301).

3. The laser anti-counterfeiting composite film according to claim 2, characterized in that: A traction belt (303) is fixedly connected to one side of the outer wall of the discrete layer (302), and the adhesive layer (301) has a thickness of 2-5 μm.

4. The laser anti-counterfeiting composite film according to claim 1, characterized in that: The thickness of the laser anti-counterfeiting layer (202) is 1-5μm.

5. The laser anti-counterfeiting composite film according to claim 1, characterized in that: The substrate (1) has a thickness of 12-50 μm, the reflective sphere (203) is configured as a hemispherical structure, and the top of the surface printing layer (205) is coated with a wear-resistant coating.

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