Multi-anti-counterfeiting mark, preparation method, anti-counterfeiting method and application of multi-anti-counterfeiting mark in cigarette packaging

Abstract

The invention discloses a multi-anti-counterfeiting mark, a preparation method, an anti-counterfeiting method and application of the multi-anti-counterfeiting mark in cigarette packaging, and belongs to the technical field of tobacco anti-counterfeiting. The multi-anti-counterfeiting mark comprises a substrate layer, an anti-counterfeiting layer and a transparent protective film layer. The core is that five anti-counterfeiting patterns of temperature variation, light variation, fluorescence, phosphorescence and thermally-induced delayed fluorescence are integrated on the anti-counterfeiting layer. The five patterns are respectively printed by corresponding functional ink and can generate independent and multi-mode physical response to different excitations such as temperature and illumination, and particularly, phosphorescence and thermally induced delayed fluorescence patterns provide dynamic verification characteristics in time dimension. By combining the space-time response characteristics of the five materials, a physical anti-counterfeiting system which is highly complex and difficult to imitate is constructed, and the problems that a traditional anti-counterfeiting technology is solidified in logic and easy to crack are fundamentally solved. The identification can be applied to high-value products such as cigarette packages, and efficient and reliable technical support is provided for brand protection.

Description

Technical Field

[0001] The present invention belongs to the technical field of tobacco anti-counterfeiting, and in particular relates to a multiple anti-counterfeiting mark, a preparation method, an anti-counterfeiting method and an application in cigarette packaging. Background Art

[0002] With the rapid development and globalization of the commodity economy, counterfeit and substandard products are becoming increasingly prevalent, posing a serious threat to brand reputation and consumer rights. Anti-counterfeiting technology is particularly crucial in high-value, high-counterfeit industries like tobacco. Traditional anti-counterfeiting technologies, such as QR codes, microprinting, holographic patterns, or color-shifting inks, rely on simple security logic and are easily deciphered and copied.

[0003] To raise the bar for anti-counterfeiting, the industry has developed combined anti-counterfeiting technologies that superimpose multiple layers of features, such as integrated holographic layers, fluorescent coding layers, and digital watermarks. The core of these technologies lies in increasing complexity by overlaying multiple physical or digital features. However, this static overlay anti-counterfeiting logic also exposes a series of limitations. First, the verification process is often complex, requiring consumers to perform multiple steps, which is not only time-consuming but also can lead to misjudgments due to improper operation, resulting in a poor user experience. Second, despite the numerous features, the overlay patterns and logic are fixed, allowing counterfeiters to analyze each layer through reverse engineering and replicate them with high precision. Once these static anti-counterfeiting rules are cracked, the entire anti-counterfeiting system is at risk of failure. Furthermore, the physical overlay of multiple materials can cause optical interference or material stress changes, affecting the integrity and clarity of the feature information, thereby weakening the overall anti-counterfeiting effectiveness.

[0004] Emerging dynamic encryption strategies, such as periodically updated cloud-based verification codes, introduce dynamic changes, but are mostly limited to the digital realm and fail to deeply integrate with the physical materials of the packaging. While color-changing materials (such as thermochromics and photochromics) can provide intuitive and dynamic physical responses, they typically have a single response mode, making it difficult to build a multi-dimensional, highly secure verification system.

[0005] Therefore, how to provide a method that can realize dynamic encryption of anti-counterfeiting rules at the physical level while maintaining the intuitiveness and convenience of consumer verification, while solving the technical problems of anti-counterfeiting strategies being solidified and easily cracked, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] The purpose of the present invention is to provide a multiple anti-counterfeiting mark, a preparation method and application thereof, aiming to solve the technical problems in the prior art of rigid anti-counterfeiting logic and easy reverse copying.

[0007] To achieve the above object, the application discloses a multi-redundant anti-counterfeiting mark, comprising a substrate layer, an anti-counterfeiting layer arranged on the substrate layer, and a transparent protective film layer covering the anti-counterfeiting layer.

[0008] The anti-counterfeiting layer is provided with a temperature change anti-counterfeiting pattern, a light change anti-counterfeiting pattern, a fluorescent anti-counterfeiting pattern, a phosphorescent anti-counterfeiting pattern, and a thermochromic delayed fluorescent anti-counterfeiting pattern.

[0009] Preferably, the temperature change anti-counterfeiting pattern is printed by temperature change ink, and the temperature change ink is thermochromic ink and / or thermolysis ink.

[0010] Preferably, the light change anti-counterfeiting pattern is printed by light change ink, and the light change ink is ink that changes color under ultraviolet light, infrared light, or visible light irradiation.

[0011] Preferably, the fluorescent anti-counterfeiting pattern is printed by fluorescent ink, and the fluorescent ink is ink that emits fluorescence under excitation light irradiation and immediately disappears after the irradiation is stopped.

[0012] Preferably, the phosphorescent anti-counterfeiting pattern is printed by phosphorescent ink, and the phosphorescent ink is ink that can emit afterglow after the excitation light irradiation is stopped.

[0013] Preferably, the thermochromic delayed fluorescent anti-counterfeiting pattern is printed by thermochromic delayed fluorescent ink, and the thermochromic delayed fluorescent ink is ink that can emit afterglow after the excitation light irradiation is stopped, and the characteristics of the afterglow are regulated by temperature.

[0014] The application discloses a multi-redundant anti-counterfeiting mark, comprising a substrate layer, an anti-counterfeiting layer arranged on the substrate layer, and a transparent protective film layer covering the anti-counterfeiting layer.

[0015] The temperature change anti-counterfeiting pattern, the light change anti-counterfeiting pattern, the fluorescent anti-counterfeiting pattern, the phosphorescent anti-counterfeiting pattern, and the thermochromic delayed fluorescent anti-counterfeiting pattern are sequentially or in any order formed on the substrate layer by a printing process to jointly constitute the anti-counterfeiting layer, and the transparent protective film layer is formed on the surface of the anti-counterfeiting layer.

[0016] The application discloses a multi-redundant anti-counterfeiting mark, comprising a substrate layer, an anti-counterfeiting layer arranged on the substrate layer, and a transparent protective film layer covering the anti-counterfeiting layer.

[0017] At least one excitation is applied to the multi-redundant anti-counterfeiting mark, and the excitation is selected from temperature change or light irradiation.

[0018] The response states of at least two anti-counterfeiting patterns on the multi-redundant anti-counterfeiting mark under the excitation are collected, and whether the combination of the collected response states is consistent with standard information is judged according to a preset verification rule, so that the authenticity is determined.

[0019] Preferably, the response state includes the color state, the fluorescence state, and the state of the afterglow at a specific time point after the illumination is stopped of the anti-counterfeiting pattern.

[0020] A fourth aspect of the present invention provides a cigarette package provided with the multiple anti-counterfeiting marks described in any one of the first aspects.

[0021] The technical content disclosed in the present invention has the following beneficial effects:

[0022] The present invention provides a multiple anti-counterfeiting mark that integrates five anti-counterfeiting patterns with different response mechanisms. By combining five materials with independent physical response characteristics, namely temperature-variable, light-variable, fluorescent, phosphorescent and thermo-induced delayed fluorescence, on an anti-counterfeiting layer, a multi-dimensional physical anti-counterfeiting system is constructed. Unlike traditional static superposition anti-counterfeiting technology, the present invention utilizes the dynamic response characteristics of phosphorescent and thermo-induced delayed fluorescence materials in the time dimension (i.e., afterglow), combined with the state changes of temperature-variable, light-variable and fluorescent materials under specific excitation, to form a complex information carrier coupled in time and space. This multi-modal response combination determined by the physical nature of the material greatly increases the complexity and threshold of anti-counterfeiting, and it is difficult for counterfeiters to imitate through simple physical copying or digital simulation, thereby fundamentally improving the security and reliability of anti-counterfeiting marks and solving the problem that the traditional anti-counterfeiting logic is solidified and easy to crack.

[0023] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0025] Figure 1 Schematic diagram of the structure of a multiple anti-counterfeiting mark in an embodiment of the present invention.

[0026] Figure 2 1 is a top view of a multiple anti-counterfeiting mark in an embodiment of the present invention.

[0027] Figure 3 Schematic diagram of the state of an anti-counterfeiting layer of a multiple anti-counterfeiting mark under different conditions in an embodiment of the present invention.

[0028] Figure 4 The figure is a schematic diagram of the anti-counterfeiting logic flow of a multiple anti-counterfeiting mark in an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Base layer; 2. Anti-counterfeiting layer; 3. Transparent protective film layer; 4. Temperature-variable anti-counterfeiting pattern; 5. Fluorescent anti-counterfeiting pattern; 6. Thermo-induced delayed fluorescent anti-counterfeiting pattern; 7. Phosphorescent anti-counterfeiting pattern; 8. Optically variable anti-counterfeiting pattern. DETAILED DESCRIPTION

[0031] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0033] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0034] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0035] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0036] The present invention provides a multi-anti-counterfeiting mark and its application. The core concept is to integrate five anti-counterfeiting patterns based on different physical principles (temperature, light, time delay after excitation, etc.) into a unified mark to construct a multi-modal, spatiotemporally coupled physical information carrier. The overall structure of the mark is as follows: Figure 1 As shown in FIG, it mainly includes a base layer 1, an anti-counterfeiting layer 2 arranged on the base layer 1, and a transparent protective film layer 3 covering the anti-counterfeiting layer 2. Among them, the anti-counterfeiting layer 2 is the core of realizing the anti-counterfeiting function, such as Figure 2 As shown, it is printed with a temperature-variable anti-counterfeiting pattern 4, a fluorescent anti-counterfeiting pattern 5, a thermo-induced delayed fluorescent anti-counterfeiting pattern 6, a phosphorescent anti-counterfeiting pattern 7, and a light-variable anti-counterfeiting pattern 8. These five patterns can be distributed on the anti-counterfeiting layer 2 independently or partially overlapped to form a complex composite pattern.

[0037] The technical solution of the present invention will be described in detail below through specific embodiments.

[0038] Example 1:

[0039] The first aspect of the present invention discloses a multiple anti-counterfeiting mark, comprising a base layer 1, an anti-counterfeiting layer 2 disposed on the base layer 1, and a transparent protective film layer 3 covering the anti-counterfeiting layer 2; the anti-counterfeiting layer 2 is provided with a temperature-variable anti-counterfeiting pattern 4, a light-variable anti-counterfeiting pattern 8, a fluorescent anti-counterfeiting pattern 5, a phosphorescent anti-counterfeiting pattern 7, and a thermo-induced delayed fluorescent anti-counterfeiting pattern 6. The temperature-variable anti-counterfeiting pattern 4 is printed with a temperature-variable ink, which is a thermochromic ink and / or a thermochromic ink. The light-variable anti-counterfeiting pattern 8 is printed with a light-variable ink, which is an ink that changes color under ultraviolet light, infrared light, or visible light. The fluorescent anti-counterfeiting pattern 5 is printed with a fluorescent ink, which is an ink that emits fluorescence under excitation light and disappears immediately after the excitation light stops. The phosphorescent anti-counterfeiting pattern 7 is printed with a phosphorescent ink, which is an ink that can emit an afterglow after the excitation light stops. The thermally delayed fluorescent anti-counterfeiting pattern 6 is printed with thermally delayed fluorescent ink. The thermally delayed fluorescent ink is an ink that can emit afterglow after the excitation light stops irradiating, and the characteristics of the afterglow are regulated by temperature.

[0040] Specifically, a multiple anti-counterfeiting mark has a structure comprising, from bottom to top, a base layer 1, an anti-counterfeiting layer 2 and a transparent protective film layer 3.

[0041] The base layer 1 can be made of materials commonly used in cigarette packaging, such as white cardboard, white board paper, coated paper or aluminum foil paper, to provide support for the entire label.

[0042] The anti-counterfeiting layer 2 is the core of the technology, on which five different anti-counterfeiting patterns are formed through a printing process.

[0043] The temperature-changing anti-counterfeiting pattern 4 is printed with temperature-changing ink. Temperature-changing ink is an ink whose color changes at a specific temperature. Depending on the application requirements, thermochromic ink (changing from colorless to colored) or thermochromic ink (changing from colored to colorless) can be selected, and the color change can be reversible or irreversible. In this embodiment, a thermochromic ink is selected, and its color change temperature is set at higher than 50°C (for example, 60°C) to avoid false triggering caused by daily ambient temperature changes. The mass ratio of the thermochromic pigment in the ink is preferably 1030%, and the pigment can be one or more of liquid crystal, spironolactone, spiropyran and other compounds.

[0044] The optically variable anti-counterfeiting pattern 8 is printed using optically variable ink. Optically variable ink changes color under specific lighting conditions (such as ultraviolet light, infrared light, or visible light). In this embodiment, an ultraviolet-responsive optically variable ink is used, with a preferred optically variable pigment weight ratio of 520%. The pigment can be one or more compounds such as spiropyran, azobenzene, and diarylethenes.

[0045] The fluorescent anti-counterfeiting pattern 5 is printed using fluorescent ink. Fluorescent ink emits visible fluorescence when exposed to specific excitation light (usually ultraviolet light), which disappears immediately upon cessation of exposure. Colored fluorescent ink (which exhibits color under ordinary light) or colorless fluorescent ink (which is invisible under ordinary light and only appears under excitation light) can be used. In this embodiment, colored fluorescent ink is used, and the weight ratio of the colored fluorescent pigment is preferably 530%. The pigment can be one or more compounds such as rhodamine, coumarin, and tetraphenylethylene.

[0046] The phosphorescent anti-counterfeiting pattern 7 is printed using phosphorescent ink. Similar to fluorescent ink, phosphorescent ink can continue to emit light for a period of time after the excitation light ceases, producing an afterglow. This time-delay characteristic is one of the keys to achieving dynamic anti-counterfeiting. In this embodiment, a colored phosphorescent ink is used, preferably containing 530% by weight of a colored phosphorescent pigment. The pigment can be one or more of zinc sulfide, strontium aluminate, or a rare earth-doped silicate.

[0047] The thermally delayed fluorescent anti-counterfeiting pattern 6 is printed using thermally delayed fluorescent ink. This ink is unique in that its delayed luminescence (afterglow) properties are temperature-regulated. Specifically, at a specific temperature, the intensity or lifetime of the afterglow changes significantly after the light is removed, thus introducing a dual verification dimension of "temperature" and "time." In this embodiment, the delayed fluorescent pigment preferably has a mass ratio of 530%, and the pigment can be one or more organic compounds such as carbazole, phenoxazine, and phenothiazine.

[0048] The transparent protective film layer 3 covers the topmost layer of the anti-counterfeiting layer 2, protecting the underlying anti-counterfeiting pattern and preventing wear and oxidation. This film layer can be a layer of cured colorless UV varnish or a laminated transparent polymer film, such as polyethylene terephthalate (PET) film.

[0049] Example 2:

[0050] A second aspect of the present invention provides a method for preparing a multiple anti-counterfeiting mark, which is applied to any of the multiple anti-counterfeiting marks described in the first aspect, and comprises the following steps:

[0051] On the base layer (1), the temperature-variable anti-counterfeiting pattern (4), the light-variable anti-counterfeiting pattern (8), the fluorescent anti-counterfeiting pattern (5), the phosphorescent anti-counterfeiting pattern (7) and the thermally delayed fluorescent anti-counterfeiting pattern (6) are formed sequentially or in any order through a printing process, and together constitute the anti-counterfeiting layer (2); and the transparent protective film layer (3) is formed on the surface of the anti-counterfeiting layer (2).

[0052] Specifically, this embodiment provides a method for preparing the multiple anti-counterfeiting mark described in Example 1, and the specific steps are as follows:

[0053] (1) Temperature-Shift Pattern Printing: Using a precision screen printer, temperature-shift ink was printed onto the substrate layer 1 according to a predetermined pattern. The printing pressure was set to 0.20.8 MPa and the printing speed was set to 515 m / min. After printing, the substrate was dried at 2050°C for 210 min to form the temperature-shift anti-counterfeiting pattern 4.

[0054] (2) Optically variable pattern printing: Use a precision screen printer to print the optically variable ink at a designated location on the substrate layer 1. The process parameters are similar to those in step (1). After printing, the substrate is dried at 2050°C for 210 minutes to form an optically variable anti-counterfeiting pattern 8.

[0055] (3) Fluorescent pattern printing: Use a precision screen printer to print fluorescent ink on a designated location on the substrate layer 1. The process parameters are similar to those in step (1). After printing, the substrate is dried at 2050°C for 515 minutes to form a fluorescent anti-counterfeiting pattern 5.

[0056] (4) Phosphorescent Pattern Printing: Using a precision screen printer, phosphorescent ink was printed on the designated location of the substrate layer 1. The printing pressure was 0.20.8 MPa and the printing speed was 1015 m / min. After printing, the substrate was dried at 3080°C for 515 min to form the phosphorescent anti-counterfeiting pattern 7.

[0057] (5) Thermally delayed fluorescent pattern printing: Using a precision screen printer, thermally delayed fluorescent ink is printed on a designated location on the substrate layer 1. The process parameters are similar to those in step (1). After printing, the thermally delayed fluorescent anti-counterfeiting pattern 6 is formed by drying at 2050°C for 515 minutes.

[0058] The order of the above steps (1) to (5) can be adjusted according to the actual production process. These five patterns together constitute the anti-counterfeiting layer 2.

[0059] (6) Protective Layer Coating: Using a coating machine, evenly apply a layer of transparent protective material, such as UV varnish, to the surface of the anti-counterfeiting layer 2. The coating speed is 1030 m / min, and the coating thickness is 0.05-0.08 mm. After coating, the layer is completely cured by UV irradiation or thermal drying (drying time 120 min) to form a transparent protective film layer 3.

[0060] Example 3:

[0061] A third aspect of the present invention provides an anti-counterfeiting method, which uses the multiple anti-counterfeiting marks described in any one of the first aspects to perform anti-counterfeiting verification, the method comprising:

[0062] applying at least one stimulus to the multiple anti-counterfeiting marks, wherein the stimulus is selected from temperature change or light;

[0063] collecting response states of at least two anti-counterfeiting patterns on the multiple anti-counterfeiting marks under the stimulus;

[0064] According to the preset verification rules, it is judged whether the collected combination of the response states is consistent with the standard information, thereby determining the authenticity.

[0065] The response state includes the color state, the fluorescence state, and the state of the afterglow at a specific time point after the illumination is stopped.

[0066] Specifically, this embodiment shows the response characteristics of the multiple anti-counterfeiting marks prepared according to Examples 1 and 2, such as Figure 3 shown.

[0067] Temperature-changing anti-counterfeiting pattern 4: Printed using thermochromic ink with a color change temperature of 60°C. At room temperature (e.g., 25°C), the pattern is white or colorless; when the temperature rises above 60°C, the pattern turns red; and when the temperature drops back to room temperature, the pattern returns to white.

[0068] Optically variable anti-counterfeiting pattern 8: Under visible light, the pattern is white; after being irradiated with 365nm ultraviolet light, the pattern turns yellow; after the ultraviolet light is removed and irradiated with white light, the pattern returns to white.

[0069] Fluorescent anti-counterfeiting pattern 5: Printed with colored fluorescent ink. Under visible light, the pattern itself appears red. Under ultraviolet light, the pattern emits a bright red fluorescence. When the ultraviolet light is turned off, the fluorescence disappears immediately.

[0070] Phosphorescent anti-counterfeiting pattern 7: Printed with colored phosphorescent ink. Under visible light, the pattern appears green. Under ultraviolet light, it emits a bright green fluorescence. When the UV light is turned off, the pattern continues to emit a green afterglow, which gradually decreases in brightness over time until it disappears.

[0071] Thermally induced delayed fluorescence anti-counterfeiting pattern 6: Under visible light, the pattern is red; under ultraviolet light, it emits red fluorescence; after the UV light is turned off, it produces red delayed fluorescence (afterglow). Its key characteristic is that the intensity of its delayed fluorescence increases significantly when the ambient temperature rises from room temperature.

[0072] Example 4:

[0073] The fourth aspect of the present invention provides a cigarette package, on which the multiple anti-counterfeiting marks described in any one of the first aspects are provided. This embodiment proposes a dynamic anti-counterfeiting logic based on the multiple anti-counterfeiting marks, such as Figure 4 As shown in Figure 1, this logic overturns the traditional "what you see is what you get" static verification model and introduces the concept of "full-layer interference and subset encryption." This logic includes both encryption and verification processes.

[0074] Encryption process:

[0075] (1) Data Collection: First, the responses of a standard multi-anti-counterfeiting mark under various stimulus conditions are comprehensively collected to form a multi-dimensional raw database. The collection process includes: Temperature variation data stream: Images of the temperature variation pattern are captured at different temperatures (e.g., 30°C and 80°C).

[0076] Optically variable data stream: Capture images of the optically variable pattern before and after exposure to ultraviolet light.

[0077] Fluorescence data stream: Captures images of fluorescence patterns when illuminated by UV light.

[0078] Phosphorescence data stream: After turning off the UV light, images of the phosphorescence pattern are continuously captured at different time points (such as 0s, 1s, 2s, ...).

[0079] Thermally delayed fluorescence data stream: After turning off the UV light at different temperatures, images of the thermally delayed fluorescence pattern are continuously captured within a very short time (such as 0ms, 1ms, 2ms, ...).

[0080] All collected images are converted into standardized binary data through the image processing system, forming a huge dynamic binary data set.

[0081] (2) Rule setting and encryption:

[0082] Setting interference information: A data combination that displays all security patterns in their most highly excited state (e.g., temperature-dependent color development at high temperatures, light-dependent color development under UV irradiation, fluorescence color development, the brightest moment of phosphorescence, and the brightest moment of thermally delayed fluorescence at high temperatures) is preset as a publicly available, invalid "interference fake message." This is done to confuse potential counterfeiters into believing this is the verification standard.

[0083] Dynamically select the real information carrier: A programmable rule engine is established to dynamically select a specific data subset from a large dataset according to preset rules as the key that carries the real information. For example, the valid rules for a certain time period might be: "Temperature change state at 30°C" + "Light change state before UV irradiation" + "Fluorescence state under UV irradiation" + "Phosphorescence state 5 seconds after UV is turned off" + "Thermal delayed fluorescence state 3 milliseconds after UV is turned off at 80°C". This subset combination corresponds to unique plaintext information (such as "authentic" or batch number).

[0084] Encryption: Use the binary sequence corresponding to the subset combination as the key to encrypt the plaintext data and generate ciphertext data which is stored in the cloud server.

[0085] Verification process:

[0086] (1) User-side data collection: Consumers or auditors use dedicated equipment (or smartphone apps with corresponding functions) to scan the multiple anti-counterfeiting labels on cigarette packaging. The equipment automatically applies stimuli such as ultraviolet light and micro-heating, and collects multimodal response data of the labels according to a preset program.

[0087] (2) Data extraction and decryption: The verification terminal obtains the currently activated verification rules (i.e., the current valid subset combination definition) from the cloud. Then, it extracts the specific subset specified by the rules from the collected data and converts it into binary data.

[0088] (3) Comparison verification: Use the binary data as the key to try to decrypt the ciphertext obtained from the server. If the decryption is successful and the plaintext data obtained is consistent with the plaintext stored on the server, it is judged to be authentic; otherwise, it is a counterfeit.

[0089] Application advantages:

[0090] This anti-counterfeiting logic can be applied to cigarette packaging. Because the carrier of authentic information (the subset combination) is dynamically changeable (e.g., changing monthly or with each batch) and controlled by a backend system, tobacco companies can upgrade their anti-counterfeiting strategies simply through software updates, without having to alter the physical structure of the packaging. This fundamentally overcomes the fatal flaw of traditional anti-counterfeiting technology, which becomes completely ineffective once it is cracked.

[0091] The solution can also be integrated with a geographic information system (GIS) to prevent counterfeiting. For example, different activation rules can be set for different sales regions. If a cigarette pack sold in Beijing is brought to Shanghai for verification, the verification system will issue an alarm if the geographic location does not match the rules, effectively monitoring the product's distribution channels.

[0092] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A multiple anti-counterfeiting mark, characterized in that: It comprises a base layer (1), an anti-counterfeiting layer (2) arranged on the base layer (1), and a transparent protective film layer (3) covering the anti-counterfeiting layer (2); The anti-counterfeiting layer (2) is provided with a temperature-variable anti-counterfeiting pattern (4), a light-variable anti-counterfeiting pattern (8), a fluorescent anti-counterfeiting pattern (5), a phosphorescent anti-counterfeiting pattern (7), and a thermally delayed fluorescent anti-counterfeiting pattern (6).

2. The multiple anti-counterfeiting mark according to claim 1, characterized in that: The temperature-changing anti-counterfeiting pattern (4) is printed with temperature-changing ink, and the temperature-changing ink is a thermochromic ink and / or a thermochromic ink.

3. The multiple anti-counterfeiting mark according to claim 1 or 2, characterized in that: The optically variable anti-counterfeiting pattern (8) is printed with optically variable ink, which is an ink that changes color under ultraviolet light, infrared light or visible light.

4. The multiple anti-counterfeiting mark according to any one of claims 1 to 3, characterized in that: The fluorescent anti-counterfeiting pattern (5) is printed with fluorescent ink, which emits fluorescence when irradiated by excitation light and disappears immediately after the irradiation stops.

5. The multiple anti-counterfeiting mark according to any one of claims 1 to 4, characterized in that: The phosphorescent anti-counterfeiting pattern (7) is printed with phosphorescent ink, which is an ink that can emit afterglow after the excitation light stops irradiating.

6. The multiple anti-counterfeiting mark according to any one of claims 1 to 5, characterized in that: The thermally delayed fluorescent anti-counterfeiting pattern (6) is printed with thermally delayed fluorescent ink, which is an ink that can emit afterglow after the excitation light stops irradiating, and the characteristics of the afterglow are regulated by temperature.

7. A method for preparing a multiple anti-counterfeiting mark according to any one of claims 1 to 6, characterized in that: The following steps are involved: On the base layer (1), the temperature-variable anti-counterfeiting pattern (4), the light-variable anti-counterfeiting pattern (8), the fluorescent anti-counterfeiting pattern (5), the phosphorescent anti-counterfeiting pattern (7) and the thermally delayed fluorescent anti-counterfeiting pattern (6) are formed sequentially or in any order through a printing process, and together constitute the anti-counterfeiting layer (2); and the transparent protective film layer (3) is formed on the surface of the anti-counterfeiting layer (2).

8. An anti-counterfeiting method, characterized in that: Anti-counterfeiting verification is performed using the multiple anti-counterfeiting marks according to any one of claims 1 to 6, the method comprising: Apply at least one stimulus to the multiple anti-counterfeiting mark, wherein the stimulus is selected from temperature change or light; collect the response states of at least two anti-counterfeiting patterns on the multiple anti-counterfeiting mark under the stimulus; and judge whether the combination of the collected response states is consistent with the standard information according to preset verification rules, so as to determine the authenticity.

9. The anti-counterfeiting method according to claim 8, characterized in that: The response state includes the color state, the fluorescence state, and the state of the afterglow at a specific time point after the illumination is stopped.

10. A cigarette package, characterized in that: The multiple anti-counterfeiting marks as described in any one of claims 1 to 6 are arranged thereon.

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