Anti-fake shrinkable cap body structure and preparation method

Abstract

The present application discloses a counterfeit-proof shrinkable plastic cap body structure, which is an integrated and non-peeling composite structure, comprising, from outside to inside, a heat-shrinkable base material layer, an outer graphic layer, a base ink layer I, a composite holographic functional layer, and a base ink layer II. The present application also discloses a preparation method of the counterfeit-proof shrinkable plastic cap body structure. The combination of the composite holographic structure and the precision printing layer significantly improves the comprehensive performance of the counterfeit-proof plastic cap. The dynamic holographic, laser anodizing, and external printing are effectively integrated to form a multiple counterfeit-proof verification system, greatly enhancing the security of the counterfeit-proof. Meanwhile, the high-precision register process realizes the integration of brand color, metal luster, and dynamic visual effect, greatly optimizing the appearance quality of the product.

Description

Technical Field

[0001] This invention belongs to the field of anti-counterfeiting cap technology, specifically relating to the structure of an anti-counterfeiting shrink-fit cap, and also to a method for preparing the structure of an anti-counterfeiting shrink-fit cap. Background Technology

[0002] High-end liquor is not only a consumer product, but also a luxury item with profound cultural connotations and financial attributes. Its brand value highly depends on market reputation and consumer trust. However, the industry has long suffered from the erosion of counterfeit and substandard products, resulting in a predicament where brands invest heavily in combating counterfeiting, counterfeiters persist despite repeated crackdowns, and consumers struggle to distinguish genuine products from fakes. Anti-counterfeiting caps, as the first line of defense and visual focal point of packaging, have become a core component of brand anti-counterfeiting and decoration, but their technological development still lags behind market demand.

[0003] Currently, most anti-counterfeiting caps on the market employ a single technology, such as ordinary holography or color printing. However, these technologies have significant drawbacks. First, their anti-counterfeiting performance is insufficient: ordinary holographic effects are easily copied, while printed anti-counterfeiting measures are even easier to imitate, making it difficult to effectively curb counterfeiting. Second, there is a disconnect between visual effects and anti-counterfeiting functions: the common combination of "cap + self-adhesive holographic label" is not only easy to imitate but also disrupts the integrated aesthetics of the packaging, making it appear cheap. Third, existing technologies struggle to balance multiple anti-counterfeiting measures with high-end visual effects: either full-page holography results in a chaotic and unfocused design, or static printing appears monotonous and flat, failing to meet brands' dual demands for ultimate anti-counterfeiting and artistic expression. Therefore, there is an urgent need for an innovative cap solution that integrates high security, exquisite visuals, and anti-counterfeiting features. Summary of the Invention

[0004] The purpose of this invention is to provide a structure for the body of an anti-counterfeiting shrink-fit cap, which solves the problem that the anti-counterfeiting mark in the structure of the anti-counterfeiting shrink-fit cap is easily counterfeited.

[0005] The purpose of this invention is to provide a method for preparing the structure of an anti-counterfeiting shrink-fit cap.

[0006] The technical solution adopted in this invention is: an anti-counterfeiting shrinkable cap body structure, wherein the cap body is an integrated, non-removable composite structure, which includes, from the outside to the inside: a heat-shrinkable substrate layer, an outer graphic layer, a base ink layer I, a composite holographic functional layer, and a base ink layer II. The order of each layer from the inside to the outside can be adjusted according to actual needs.

[0007] The invention is further characterized in that, Optionally, the outer graphic layer is formed through a printing process and is used to carry brand logos, text, or graphic information; it includes one or more of brand logos, text information, decorative patterns, and data coding; the outer graphic layer is printed on the base ink layer by gravure printing, screen printing, or letterpress printing; thereby, on the basis of realizing brand logo and information display, it further provides tactile and visual multi-dimensional anti-counterfeiting features, and together with the lower holographic functional layer, it constitutes a multi-layer anti-counterfeiting system.

[0008] Optionally, the base ink layer I and base ink layer II can be coated with single-color or multi-color translucent or colored inks with specific light transmittance through a high-precision gravure printing process; the printing pattern is controlled by an optical registration system so that the base ink layer can accurately reserve a transparent window area while forming an overall color background. This transparent window area corresponds to the anti-counterfeiting graphic area in the lower composite holographic functional layer.

[0009] Optionally, the function of the base ink layer I is that its ink-covered area can show the metallic luster of the underlying aluminum-plated layer through the ink, while the reserved transparent window area is used to fully expose the holographic dynamic and three-dimensional visual effects of the underlying layer, thereby achieving multiple integrations and contrasts of brand color consistency, metallic texture and holographic effect, significantly improving anti-counterfeiting recognition and overall aesthetics.

[0010] Optionally, the composite holographic functional layer includes an aluminum-plated layer and a holographic laser layer; the microstructure material in the composite holographic functional layer is a UV-curable resin; the composite holographic functional layer forms a holographic laser layer containing micro-nano structures, dynamic optical effects, or three-dimensional embossed patterns on a PET film through photolithography and molding processes; after aluminum deposition, a laser aluminum removal process is used to remove part of the plating layer, forming an anti-counterfeiting graphic area with a holographic laser pattern; the anti-counterfeiting graphic area includes elements such as holographic visual variable information, microtext, verification codes, star patterns, or QR codes.

[0011] Optionally, the heat-shrinkable substrate layer mainly provides the main support and heat-shrinkable properties, and the material of the heat-shrinkable substrate layer can be any one of polyvinyl chloride (PVC) and polyethylene terephthalate (PET).

[0012] The second solution adopted in this invention is a method for preparing the anti-counterfeiting shrink-fit cap body structure, and the specific operation steps are as follows: Step 1: Select heat-shrinkable film as the base material for the cap body. The base material can be any one of PET or PVC heat-shrinkable film, and the thickness of the base film is 0.08mm-0.10mm. Step 2: Prepare the aluminum-plated cold hot stamping transfer film; Step 3: Use a laser to clean the aluminum in a designated area of ​​the aluminum-plated cold hot stamping transfer film, and use micro-nano laser engraving technology to precisely process and form micron and nano-level high-precision micro-nano optical structures, while simultaneously preparing micro text, micro QR codes and optical anti-counterfeiting micro graphics; The micro-nano optical structure can rely on the dynamic point light source refraction principle and the white light interference imaging principle to produce interference, diffraction and refraction coupling effects under ordinary white light and point light source illumination. It presents a unique optical anti-counterfeiting effect with dynamic color change, light and shadow floating and texture gradient that changes with the light source angle and observation angle. It can be intuitively identified by the naked eye and accurately verified by the equipment, thus preparing a composite holographic functional layer with multiple optical anti-counterfeiting properties. Step 4: Overlay the outer graphic layer onto the surface of the substrate film using a screen printing process to complete the decorative graphic printing operation; Step 5: Print the base ink layer I on the surface of the printed outer graphic layer, and use the CCD optical registration system to precisely control the position of the white space in the transparent window area to ensure accurate alignment of the subsequent holographic structure; Step 6: The prepared aluminum-plated cold foil transfer film, which has undergone laser anti-counterfeiting processing, is precisely laminated onto the surface of the base ink layer I through a molding mirror transfer process, thereby achieving a precise composite of the holographic anti-counterfeiting structure and the printing layer; Step 7: Using a printing process, print the base ink layer II again on the inner surface of the composite holographic functional layer; Step 8: Finally, dry and cure, then cut and roll to obtain the finished anti-counterfeiting heat shrink cap.

[0013] Step 2 is as follows: Step 2.1: Precisionly coat a release layer onto the corona-treated substrate film and dry and cure it; the release layer is a colloidal material, which facilitates the subsequent peeling and separation of the holographic layer; Step 2.2: Apply an aluminum plating layer and a protective layer sequentially onto the release layer. The protective layer is a colloidal material used to isolate external friction damage and ensure that the cold stamping effect is not affected by scratches. Step 2.3: Coat the protective layer with transparent thermoplastic molding resin as a molding layer. After drying, heat the molding plate to imprint a grating structure on the surface of the molding layer to form a holographic laser layer. Step 2.4: Place the rolled film with the imprinted pattern into a vacuum metallizing machine. Under a high vacuum environment, heat the aluminum wire to an evaporation state, causing aluminum atoms to be uniformly sprayed and deposited on the surface of the molded layer, forming an aluminum-plated layer on the surface of the holographic laser layer of the molded layer; wherein, the vacuum degree of vacuum metallization is 10. - ³-10 -4 Pa, aluminum wire is instantly vaporized at 1200-1400℃ and condenses on the surface of the substrate to form a mirror-finish aluminum plating layer with a thickness of 30nm-50nm, and finally cold hot stamping transfer film is prepared. The overall thickness of the cold hot stamping transfer film is controlled at 19μm±3μm, which ensures that the aluminum layer sublimates rapidly during the subsequent laser engraving process, guaranteeing a clear and complete engraved pattern.

[0014] Step 3 is as follows: Step 3.1: Use a laser to precisely clean the aluminum layer of the pre-set transparent window area of ​​the cold foil transfer film, removing the aluminum layer in the designated area to form a transparent window structure; Step 3.2: Using micro-nano laser engraving technology, microtext, micro-QR codes and other optical anti-counterfeiting micro-graphics are processed on the surface of the film to give the film multiple laser anti-counterfeiting features.

[0015] Step 6 is as follows: Step 6.1: Apply a layer of UV adhesive to the substrate film from Step 1 to form an adhesive layer; Step 6.2: Bring the aluminized cold foil transfer film protective layer into contact with the substrate film adhesive layer, and press it tightly with a pressure roller to allow the adhesive to penetrate the protective layer; Step 6.3: Use a UV lamp to instantly irradiate the PET substrate film, causing the UV adhesive underneath to quickly solidify from a liquid state to a solid state, generating strong adhesion. Step 6.4: Quickly peel off the PET film, with the peeling position controlled by the release layer, so that the molding layer, metallized layer and protective layer are transferred as a whole to the PET substrate film; Step 6.5: In the molding unit, the pattern on the printing roller is mirrored and transferred to the film using a constant tension control system.

[0016] The beneficial effects of this invention are as follows: This invention significantly enhances the overall performance of anti-counterfeiting caps by combining a composite holographic structure with a precision printing layer. It effectively integrates dynamic holography, laser-washed aluminum windows, and external printing to form a multi-layered anti-counterfeiting verification system, greatly strengthening anti-counterfeiting security. Simultaneously, the high-precision registration process achieves a unified fusion of brand colors, metallic luster, and dynamic visual effects, significantly optimizing the product's appearance quality. The selected heat-shrinkable substrate has excellent adaptability, ensuring a tight seal on different bottle types. Furthermore, the preparation method has clear steps, mature technology, and is easy to scale up for stable production, possessing significant industrialization advantages. This invention constructs a functional layered structure on the heat-shrinkable substrate through a series of specific, irreversible precision processing steps. This structure itself is the final product and a direct embodiment of its anti-counterfeiting and aesthetic functions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the hat body structure of the present invention.

[0018] In the figure, 1 is the heat-shrinkable substrate layer; 2 is the outer graphic layer; 3 is the base ink layer I; 4 is the composite holographic functional layer; and 5 is the base ink layer II. Detailed Implementation

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Embodiment 1 The anti-counterfeiting shrinkable cap structure of the present invention is an integrated, non-removable composite structure, which includes, from the outside to the inside, a heat-shrinkable substrate layer 1, an outer graphic layer 2, a base ink layer I 3, a composite holographic functional layer 4, and a base ink layer II 5.

[0020] Example 2 The anti-counterfeiting shrinkable cap structure of the present invention is an integrated, non-removable composite structure, which includes, from the outside to the inside, a heat-shrinkable substrate layer 1, an outer graphic layer 2, a base ink layer I 3, a composite holographic functional layer 4, and a base ink layer II 5.

[0021] The outer graphic layer 2 includes one or more of the following: brand logo, text information, decorative patterns, and data coding; the outer graphic layer is printed on the base ink layer I 3 by gravure printing, screen printing, or letterpress printing; the base ink layer I is a translucent ink layer.

[0022] Example 3 Based on Example 2, a transparent window area is reserved on the base ink layer I, and this transparent window area is aligned and fitted with part of the anti-counterfeiting graphic area on the composite holographic functional layer 4.

[0023] The composite holographic functional layer 4 is formed by embossing a holographic laser layer containing micro-nano structures on a PET substrate film through photolithography and molding processes; after depositing an aluminum plating layer on the holographic laser layer, part of the aluminum plating layer is removed by a laser aluminum washing process to form an anti-counterfeiting graphic area containing holographic laser patterns.

[0024] Example 4 Based on Example 3, the material of the heat-shrinkable substrate layer can be either polyvinyl chloride (PVC) or polyethylene terephthalate (PET).

[0025] Example 5 This embodiment provides a structure for an anti-counterfeiting shrinkable cap, which, from the outside to the inside, consists of: a heat-shrinkable substrate layer, an outer graphic layer (screen-printed logo), a base ink layer (with a reserved transparent window), a composite holographic functional layer (containing anti-counterfeiting graphics), and a base ink layer II; the specific preparation method of the anti-counterfeiting shrinkable cap structure includes: Step 1: Select a 0.08mm thick PVC substrate film as the heat-shrinkable substrate layer; Step 2: Prepare the aluminized cold foil transfer film, including the following specific operations: Step 2.1: Precisionly coat a release layer onto the corona-treated PVC substrate film and dry and cure it; the release layer is a colloidal material that facilitates the peeling off of the holographic layer; Step 2.2: Apply an aluminum plating layer and a protective layer sequentially onto the release layer. The protective layer is a colloidal material used to ensure that the cold stamping effect is not affected by scratches.

[0026] Step 2.3: Apply transparent thermoplastic molding resin to the protective layer, and after drying, grating structures are imprinted on the surface of the molding layer by heating the molding plate to form a holographic laser layer.

[0027] Step 2.4: Place the patterned film roll into a vacuum metallizing machine. Under a high vacuum environment, heat the aluminum wire until it evaporates, and aluminum atoms are uniformly sprayed and deposited on the surface of the molded layer. A layer of aluminum plating is then applied to the holographic laser layer of the molded layer. The vacuum degree of the vacuum metallization is 10. - ³Pa, aluminum wire vaporizes instantaneously at 1200℃ and condenses into a mirror-finish aluminum plating layer on the substrate surface. The aluminum plating layer is 40nm thick, resulting in a cold hot stamping transfer film. Step 3: Use a dedicated laser to perform aluminum washing treatment on the designated area, and use micro-nano laser writing technology to process and form a high-precision micro-nano optical structure as a composite holographic functional layer. The micro-nano optical structure includes micro text, micro QR codes and other optical anti-counterfeiting micro graphics. The thickness of the cold foil transfer film is controlled at 19μm ±3μm to ensure rapid sublimation of the laser-engraved portion and clear visibility of the pattern; the micro-nano laser engraving precision can reach a line width of 0.008 mm, and the minimum QR code side length is 1 mm, which can be recognized by conventional barcode scanning software.

[0028] Step 4: Use screen printing to overlay the outer graphic layer on the surface of the PVC substrate film to complete the printing of decorative graphics on the outer layer of the cap; Step 5: Print base ink layer I on the surface of the printed outer graphic layer, and precisely control the position of the white space in the transparent window area using a CCD optical registration system; Step 6: The pattern on the prepared and laser-anti-counterfeiting aluminum-plated cold foil transfer film is precisely laminated onto the surface of the base ink layer I through a molding process to form the composite holographic functional layer. Step 6.1: Apply a layer of UV adhesive to the PVC substrate film from Step 1 to form an adhesive layer; Step 6.2: Bring the aluminized cold foil transfer film protective layer into contact with the PVC substrate film adhesive layer, and press them tightly together with a pressure roller to allow the adhesive to penetrate the protective layer; Step 6.3: Use a UV lamp to instantly irradiate the PVC substrate film, causing the UV adhesive underneath to quickly solidify from a liquid state to a solid state, generating strong adhesion. Step 6.4: Quickly peel off the PVC film, with the peeling position controlled by the release layer, so that the molding layer, aluminum plating layer and protective layer are transferred as a whole to the PVC substrate film; Step 6.5: In the molding unit, the pattern on the printing roller is mirrored and transferred to the film using a constant tension control system.

[0029] Step 7: Using a printing process, print the base ink layer II again on the inner surface of the composite holographic functional layer; Step 8: Finally, dry and cure, then cut and roll to obtain the finished anti-counterfeiting heat shrink cap.

[0030] Example 6 This embodiment provides a structure for an anti-counterfeiting shrinkable cap, which, from the outside to the inside, consists of: a heat-shrinkable substrate layer, an outer graphic layer (screen-printed logo), a base ink layer I (with a reserved transparent window), a composite holographic functional layer (containing anti-counterfeiting graphics), and a base ink layer II. The specific preparation method for the anti-counterfeiting shrinkable cap structure includes: Step 1: Select a 0.10mm thick PET substrate film as the heat-shrinkable substrate layer.

[0031] Step 2: Prepare the aluminized cold foil transfer film, including the following specific operations: Step 2.1: Precisionly coat a release layer onto the corona-treated PET substrate film and dry and cure it; the release layer is a colloidal material that facilitates the peeling off of the holographic layer; Step 2.2: Apply an aluminum plating layer and a protective layer sequentially onto the release layer. The protective layer is a colloidal material used to ensure that the cold stamping effect is not affected by scratches.

[0032] Step 2.3: Apply transparent thermoplastic molding resin to the protective layer, and after drying, grating structures are imprinted on the surface of the molding layer by heating the molding plate to form a holographic laser layer.

[0033] Step 2.4: Place the patterned film roll into a vacuum metallizing machine. Under a high vacuum environment, heat the aluminum wire until it evaporates, and aluminum atoms are uniformly sprayed and deposited on the surface of the molded layer. A layer of aluminum plating is then applied to the holographic laser layer of the molded layer. The vacuum degree of the vacuum metallization is 10. -4 Pa, aluminum wire instantly vaporizes at 1350℃ and condenses into a mirror-finish aluminum plating layer on the substrate surface. The aluminum plating layer is 50nm thick, thus obtaining a cold hot stamping transfer film. Step 3: Use a special laser to clean the aluminum in the designated area to create microtext, microQR codes and other anti-counterfeiting graphics.

[0034] Laser engraving consists of two parts: hardware and software. In terms of hardware: a self-developed dedicated laser generator stably outputs a specific wavelength, and the energy-concentrating cover rapidly gathers energy to accurately remove unwanted graphics and text in the design, ensuring that the substrate and unwritten parts are not damaged; Software-wise: It supports encryption algorithms and ultra-high-speed decoding processing to ensure that the target data is accurately presented on the anti-counterfeiting aluminum foil, with a maximum encryption capability of hundreds of millions per hour; The thickness of the cold foil transfer film is controlled at 19μm ±3μm to ensure rapid sublimation of the laser-engraved portion and clear visibility of the pattern; the micro-nano laser engraving precision can reach a line width of 0.008 mm, and the minimum QR code side length is 1 mm, which can be recognized by conventional barcode scanning software.

[0035] Step 6: Transfer the pattern on the aluminized cold foil transfer film to the PVC film using a cold foil stamping process; details are as follows: Step 6.1: Apply a layer of UV adhesive to the PET substrate film from step 1 to form an adhesive layer; Step 6.2: Bring the transfer film protective layer into contact with the PET substrate film adhesive layer, and press them tightly together using a pressure roller to allow the adhesive to penetrate the protective layer; Step 6.3: Use a UV lamp to instantly irradiate the PET substrate film, causing the UV adhesive underneath to quickly solidify from a liquid state to a solid state, generating strong adhesion. Step 6.4: Quickly peel off the PET substrate film, with the peeling position controlled by the release layer, so that the molding layer, metallized layer and protective layer are transferred as a whole onto the PET substrate film; Step 6.5: In the molding unit, the pattern on the printing roller is mirrored and transferred to the film using a constant tension control system.

[0036] Step 7: Using a printing process, print the base ink layer II again on the inner surface of the composite holographic functional layer; Step 8: Finally, dry and cure, then cut and roll to obtain the finished anti-counterfeiting heat shrink cap.

Claims

1. The anti-counterfeiting shrink-fit cap body structure, characterized in that, The cap body is an integrated, non-removable composite structure, which includes, from the outside to the inside, a heat-shrinkable substrate layer (1), an outer graphic layer (2), a base ink layer I (3), a composite holographic functional layer (4), and a base ink layer II (5). The outer graphic layer (2) includes one or more of brand logo, text information, decorative patterns and data inkjet printing; the outer graphic layer is printed on the base ink layer I (3) by gravure printing, screen printing or letterpress printing. A transparent window area is reserved on the base ink layer I (3), and the transparent window area corresponds to the anti-counterfeiting graphic area in the composite holographic functional layer (4).

2. The anti-counterfeiting shrink-fit cap body structure according to claim 1, characterized in that, The base ink layer I (3) and base ink layer II (5) are light-transmitting ink layers.

3. The anti-counterfeiting shrink-fit cap body structure according to claim 1, characterized in that, The composite holographic functional layer (4) is formed by photolithography and molding processes on the substrate ink layer I to form a holographic laser layer containing micro-nano optical structures; after depositing an aluminum plating layer on the holographic laser layer, a portion of the aluminum plating layer is removed by a laser aluminum washing process to form an anti-counterfeiting graphic area containing holographic laser patterns.

4. The anti-counterfeiting shrink-fit cap body structure according to claim 1, characterized in that, The material of the heat-shrinkable substrate layer (1) is selected from either polyvinyl chloride (PVC) or polyethylene terephthalate (PET).

5. A method for preparing the anti-counterfeiting shrink-fit cap body structure, characterized in that, The specific steps are as follows: Step 1: Select a heat-shrinkable film with a thickness of 0.08mm-0.10mm as the base film for the cap body; Step 2: Prepare the aluminum-plated cold hot stamping transfer film; Step 3: Use a laser to perform aluminum washing on a designated area of ​​the aluminum-plated cold hot stamping transfer film, and use micro-nano laser engraving technology to process a high-precision micro-nano optical structure as a composite holographic functional layer. The micro-nano optical structure includes micro text, micro QR codes and other optical anti-counterfeiting micro graphics. Step 4: Use screen printing to overlay the outer graphic layer on the surface of the substrate film to complete the printing of decorative graphics on the outer layer of the cap; Step 5: Print base ink layer I on the surface of the printed outer graphic layer, and precisely control the position of the white space in the transparent window area using a CCD optical registration system; Step 6: The pattern on the prepared and laser-anti-counterfeiting aluminum-plated cold foil transfer film is precisely laminated onto the surface of the base ink layer I through a molding process to form the composite holographic functional layer. Step 7: Using a printing process, print the base ink layer II again on the inner surface of the composite holographic functional layer; Step 8: Finally, dry and cure the product, then cut and roll it up to obtain the finished product.

6. The method for preparing the anti-counterfeiting shrink-fit cap body structure according to claim 5, characterized in that, The substrate film is selected from either PET or PVC heat-shrinkable film.

7. The method for preparing the anti-counterfeiting shrink-fit cap body structure according to claim 5, characterized in that, Step 2 is as follows: Step 2.1: Precisionly coat a release layer onto the corona-treated substrate film and dry and cure it; the release layer is a colloidal material, which facilitates the peeling off of the holographic layer; Step 2.2: Apply an aluminum plating layer and a protective layer sequentially onto the release layer. The protective layer is a colloidal material to ensure that the cold stamping effect is not affected by scratches. Step 2.3: Coat the protective layer with transparent thermoplastic molding resin as a molding layer. After drying, heat the molding plate to imprint a grating structure on the surface of the molding layer to form a holographic laser layer. Step 2.4: The rolled film with the imprinted pattern is placed into a vacuum metallizing machine. Under a high vacuum environment, the aluminum wire is heated to an evaporation state, and aluminum atoms are uniformly sprayed and deposited on the surface of the molded layer, thus covering the holographic laser layer of the molded layer with an aluminum plating layer; the vacuum degree of the vacuum metallization is 10. - ³-10 -4 Pa, aluminum wire is instantly vaporized at 1200-1400℃ and condenses into a mirror-finish aluminum plating layer on the surface of the substrate. The thickness of the aluminum plating layer is 30nm-50nm, and finally a cold hot stamping transfer film is prepared. The thickness of the cold foil transfer film is controlled at 19μm ±3μm.

8. The method for preparing the anti-counterfeiting shrink-fit cap body structure according to claim 7, characterized in that, Step 3 is as follows: Step 3.1: Use a laser to perform aluminum removal on the designated transparent window area of ​​the cold foil transfer film to remove the aluminum layer in the designated area and form a transparent window structure; Step 3.2: Use micro-nano lasers to engrave microtext, process microtext, micro-QR codes and various anti-counterfeiting graphics on the surface of the film, and give the film multiple laser anti-counterfeiting features.

9. The method for preparing the anti-counterfeiting shrink-fit cap body structure according to claim 8, characterized in that, Step 6 is as follows: Step 6.1: Apply a layer of UV adhesive to the substrate film from Step 1 to form an adhesive layer; Step 6.2: Bring the aluminized cold foil transfer film protective layer into contact with the substrate film adhesive layer, and press it tightly with a pressure roller to allow the adhesive to penetrate the protective layer; Step 6.3: Use a UV lamp to instantly irradiate the substrate film, causing the UV adhesive underneath to cure rapidly, changing from a liquid to a solid state; Step 6.4: Peel off the substrate film. The peeling position is controlled by the release layer, so that the molding layer, aluminum plating layer and protective layer are transferred as a whole onto the substrate film. Step 6.5: In the molding unit, the pattern on the printing roller is mirrored and transferred to the film using a constant tension control system.

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