Anti-counterfeiting substrate, anti-counterfeiting label, and preparation method of anti-counterfeiting substrate

Abstract

This invention relates to an anti-counterfeiting substrate, an anti-counterfeiting label, and a method for preparing the anti-counterfeiting substrate. The anti-counterfeiting substrate includes: a substrate layer made of an opaque material having multiple micropores; and a filler material dispersed within the micropores. The filler material has a specific melting point; when the temperature is above the melting point, the filler material is a transparent liquid; when the temperature is below the melting point, the filler material is granular. In this anti-counterfeiting substrate, when the temperature is below the melting point of the filler material, the filler material dispersed within the micropores of the substrate layer is granular, and the substrate layer appears opaque; when the temperature is above the melting point of the filler material, the substrate layer appears transparent. Therefore, by changing the temperature, the anti-counterfeiting substrate can switch between transparent and opaque states, thereby enabling the anti-counterfeiting substrate to function as an anti-counterfeiting agent.

Description

Technical Field

[0001] This invention relates to the field of anti-counterfeiting substrate technology, and in particular to an anti-counterfeiting substrate, an anti-counterfeiting label, and a method for preparing the anti-counterfeiting substrate. Background Technology

[0002] Currently, most anti-counterfeiting labels on the market use destructive verification methods for identification. This means that while verifying the authenticity of the anti-counterfeiting label, its structure is destroyed to prevent it from being reused. However, this verification method has a problem: users can only verify its authenticity after they have decided to buy it. If they decide not to buy it after verification, the anti-counterfeiting label cannot be verified again, which will affect its resale. Summary of the Invention

[0003] Therefore, it is necessary to provide an anti-counterfeiting substrate that can be repeatedly verified.

[0004] In addition, a method for preparing anti-counterfeiting labels and anti-counterfeiting substrates is also provided.

[0005] An anti-counterfeiting substrate, comprising:

[0006] A substrate layer, made of an opaque material, having multiple micropores; and

[0007] A filler material is dispersed within the micropores. The filler material has a specific melting point. When the temperature is above the melting point, the filler material is a transparent liquid. When the temperature is below the melting point, the filler material is granular.

[0008] In one embodiment, the filler material is a crystalline material or an amorphous self-cracking material.

[0009] In one embodiment, the crystalline material is selected from either sodium acetate or sodium thiosulfate.

[0010] In one embodiment, the amorphous self-cracking material is stearic acid or palmitic acid.

[0011] In one embodiment, the melting point is 40°C to 80°C.

[0012] In one embodiment, the substrate layer is paper.

[0013] In the aforementioned anti-counterfeiting substrate, when the temperature is below the melting point of the filler material, the filler material dispersed in the micropores of the substrate layer is granular. At this time, light undergoes diffuse reflection on the pore walls and the outer surface of the filler material, and cannot penetrate the substrate layer, making the substrate layer opaque. When the temperature is above the melting point of the filler material, the filler material dispersed in the micropores of the substrate layer is a transparent liquid, and light can penetrate the liquid filler material, making the substrate layer transparent. Therefore, by changing the temperature, the anti-counterfeiting substrate can switch between transparent and opaque states, thus giving it anti-counterfeiting functionality. When used to prepare anti-counterfeiting labels, it can be used to verify authenticity multiple times.

[0014] An anti-counterfeiting label includes:

[0015] An anti-counterfeiting substrate, wherein the anti-counterfeiting substrate has the same structure as the anti-counterfeiting substrate described in any one of claims 1-6, and the anti-counterfeiting substrate includes a substrate layer;

[0016] Anti-counterfeiting graphics are set on one side of the substrate layer.

[0017] In one embodiment, a first protective layer is also stacked on the side of the anti-counterfeiting graphic away from the substrate layer.

[0018] In one embodiment, a second protective layer is further stacked on the side of the substrate layer away from the first protective layer.

[0019] The aforementioned anti-counterfeiting label includes an anti-counterfeiting substrate and anti-counterfeiting graphics. When the temperature is below the melting point of the filler material, the filler material dispersed in the micropores of the substrate layer is granular. At this time, light undergoes diffuse reflection on the pore walls of the micropores and the outer surface of the filler material, and cannot penetrate the substrate layer. The substrate layer appears opaque, and the anti-counterfeiting graphics behind the anti-counterfeiting substrate are not visible. When the temperature is above the melting point of the filler material, the filler material dispersed in the micropores of the substrate layer is transparent liquid. Light can penetrate the liquid filler material, and the substrate layer appears transparent. The anti-counterfeiting graphics behind the anti-counterfeiting substrate are visible. Therefore, by changing the temperature, the anti-counterfeiting graphics can switch between visible and invisible states, thereby enabling the anti-counterfeiting label to have anti-counterfeiting function and allowing for multiple verifications of authenticity.

[0020] A method for preparing an anti-counterfeiting substrate, used to prepare the anti-counterfeiting substrate described in any one of the above-mentioned methods, includes the following steps:

[0021] The filler material is heated to change from a granular state to a liquid state, thus obtaining a liquid filler material.

[0022] The liquid-form filler material is coated onto a substrate layer having multiple micropores, and the micropores are filled with the liquid-form filler material to obtain the anti-counterfeiting substrate. Attached Figure Description

[0023] Figure 1 A schematic diagram of the anti-counterfeiting substrate structure according to one embodiment;

[0024] Figure 2 A schematic diagram of an anti-counterfeiting label structure according to one embodiment;

[0025] Figure 3 A schematic diagram of an anti-counterfeiting label structure according to another embodiment;

[0026] Figure 4 A schematic diagram of an anti-counterfeiting label structure according to another embodiment;

[0027] Figure 5 This is a flowchart illustrating one embodiment of a method for preparing an anti-counterfeiting substrate. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is considered to be "connected" or "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "upper," "lower," "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] The anti-counterfeiting substrate 10 will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Please see Figure 1 An anti-counterfeiting substrate 10 according to one embodiment includes: a substrate layer 101 and a filler material 102.

[0032] The substrate layer 101 serves as a carrier for the filler material 102. The substrate layer 101 has multiple micropores inside. Due to the presence of micropores, light can undergo diffuse reflection within the micropores, preventing light from penetrating the substrate layer 101 and thus making the substrate layer 101 appear opaque.

[0033] Optionally, the substrate layer 101 is selected from either a microporous membrane or a fiber material.

[0034] In this embodiment, the substrate layer 101 is a fibrous material, with micropores formed between the interlaced fibers. The fibrous material includes plant fibers and synthetic fibers. Optional synthetic fiber paper includes, but is not limited to, glass fibers, ceramic fibers, polyester fibers, aramid fibers, and nylon fibers.

[0035] Preferably, the substrate layer 101 is made of paper, and the fiber material is plant fiber. The plant fiber includes main fibers and a large number of fiber fibers. Micropores are formed between the interlaced main fibers, and the fiber fibers extend into the micropores. Due to the presence of the fiber fibers, on the one hand, when the filling material 102 is in a liquid state, the fiber fibers help to increase the contact area between the filling material 102 and the plant fibers, and through capillary force, the liquid filling material 102 quickly wets the fiber fibers and fills the micropores. This helps to shorten the state transition time of the substrate layer 101 from opaque to transparent, and improve the transparency of the substrate layer 101 when it is transparent. On the other hand, during the solidification process of the filling material 102, stress concentration is easily formed at the contact points between the filling material 102 and the fiber fibers, causing the filling material 102 to break at the fiber fibers, which greatly increases the number of particles and the surface area, thereby increasing the degree of diffuse reflection of light and further reducing the opacity of the substrate layer 101 when it is opaque.

[0036] Preferably, the substrate layer 101 is made of writing paper, which is made of plant fibers and contains few fillers. Most of the plant fibers are exposed and stretched. This further helps to shorten the time for the substrate layer 101 to switch from opaque to transparent, and improves the transparency of the substrate layer 101 when it is transparent. On the other hand, it further reduces the opacity of the substrate layer 101 when it is opaque, making the anti-counterfeiting effect more obvious.

[0037] The filler material 102 is dispersed in the micropores of the substrate layer 101 and is used to change the transparency of the filler material 102 under certain conditions.

[0038] Specifically, the filler material 102 has a specific melting point. When the temperature is higher than the melting point of the filler material 102, the filler material 102 melts into a transparent liquid. The liquid filler material 102 has an affinity with the substrate layer 101 material, which can completely fill the pores of the micropores. At this time, light can penetrate the liquid filler material 102 to reach the back side of the substrate layer 101, thus making the substrate layer 101 transparent. When the temperature is lower than the melting point of the filler material 102, the filler material 102 solidifies from liquid to solid. During the solidification process, under its own stress, it separates from the pore walls of the micropores and breaks into particles. This causes light to be diffusely reflected on the pore walls of the micropores and the outer surface of the fragment particles, preventing light from penetrating the substrate layer 101, thus making the substrate layer 101 opaque.

[0039] Preferably, the melting point of the filler material 102 is 40℃~80℃. This melting point allows the filler material 102 to remain solid at room temperature, preventing users from seeing the anti-counterfeiting graphics 20 through the substrate layer 101. In use, users can easily heat the filler material 102 through simple methods, such as friction heating, to change it from a solid to a liquid state, thereby changing the substrate layer 101 from opaque to transparent, thus achieving the anti-counterfeiting effect.

[0040] Optionally, the filler material 102 is a crystalline material or an amorphous self-cracking material.

[0041] In this embodiment, the filler material 102 is a crystalline material. The crystalline material can break into numerous regularly shaped crystal particles during the solidification process. When light is incident, it is refracted and reflected on the crystal surface, and diffuse reflection occurs on the pore walls of the micropores. Therefore, it cannot penetrate the substrate layer 101, thus making the substrate layer 101 opaque.

[0042] Optionally, the crystalline material is selected from either sodium acetate or sodium thiosulfate. Sodium acetate has a melting point of 58°C, and sodium thiosulfate has a melting point of 48°C. The crystalline material can be transformed from a granular solid to a transparent liquid by simple heating.

[0043] In another embodiment, the filler material 102 is an amorphous self-cracking material. During the solidification process, the amorphous self-cracking material can split into irregular fragments. When light is incident, diffuse reflection occurs on the surface of the fragments and the pore walls of the micropores, thus preventing it from penetrating the substrate layer 101 and making the substrate layer 101 opaque.

[0044] It is worth noting that, due to the irregular surface of the fragment particles formed after the amorphous self-cracking material splits, the diffuse reflection of incident light is further enhanced. Therefore, when the amorphous self-cracking material is in the fragment particle state, the anti-counterfeiting substrate achieves better opacity.

[0045] Optionally, the amorphous self-cracking material is selected from either stearic acid or palmitic acid. Stearic acid has a melting point of 70°C, and palmitic acid has a melting point of 61°C. The aforementioned self-cracking material can be transformed from an amorphous granular solid to a transparent liquid state by simple heating.

[0046] The aforementioned anti-counterfeiting substrate 10, when the temperature is below the melting point of the filler material 102, the filler material 102 dispersed in the micropores of the substrate layer 101 is granular. At this time, light undergoes diffuse reflection on the pore walls of the micropores and the outer surface of the filler material 102, and cannot penetrate the substrate layer 101, making the substrate layer 101 opaque. When the temperature is above the melting point of the filler material 102, the filler material 102 dispersed in the micropores of the substrate layer 101 is transparent liquid, and light can penetrate the liquid filler material 102, making the substrate layer 101 transparent. Therefore, by changing the temperature, the anti-counterfeiting substrate 10 can switch between transparent and opaque states, thereby giving the anti-counterfeiting substrate 10 an anti-counterfeiting function. When used to prepare anti-counterfeiting labels, it can be used to verify authenticity multiple times.

[0047] Please see Figure 2 One embodiment of the anti-counterfeiting label includes an anti-counterfeiting substrate 10 and anti-counterfeiting graphics 20.

[0048] The anti-counterfeiting substrate 10 may have the same structure as any of the above-mentioned anti-counterfeiting substrates 10.

[0049] The anti-counterfeiting graphic 20 is set on one side of the substrate layer 101 and serves as an anti-counterfeiting mark. When the substrate layer 101 is opaque, the anti-counterfeiting graphic 20 is not visible, and when the substrate layer 101 is transparent, the anti-counterfeiting graphic 20 is visible.

[0050] Alternatively, the anti-counterfeiting graphic 20 can be obtained by offset printing, gravure printing, screen printing, spraying, or hot stamping.

[0051] In another implementation, please refer to Figure 3 The anti-counterfeiting graphic 20 is set on the lower side of the anti-counterfeiting substrate 10. A first protective layer 30 is also provided between the anti-counterfeiting graphic 20 and the anti-counterfeiting substrate 10. The first protective layer 30 is made of transparent material. By setting the first protective layer 30, the filling material 102 can be protected and prevent the filling material 102 from weathering and other phenomena.

[0052] Optionally, the material of the first protective layer 30 includes, but is not limited to: PP film, PE film, PET film, PVC film or UV varnish layer.

[0053] In the illustrated embodiment, a second protective layer 40 is also provided on the side of the substrate layer 101 away from the first protective layer 30. The second protective layer 40 is made of a transparent film. By providing the second protective layer 40, on the one hand, the filling material 102 can be prevented from weathering and deteriorating, and on the other hand, during the identification process, the user's finger can be prevented from directly contacting the filling material 102, thereby increasing process safety.

[0054] Optionally, the material of the second protective layer 40 includes, but is not limited to: PP film, PE film, PET film, PVC film or UV varnish layer.

[0055] In another implementation, please refer to Figure 4 The second protective layer 40 is provided with a conventional graphic layer 50 on the side away from the substrate layer 101. The conventional graphic layer 50 faces the user, and the user can see the conventional graphic layer 50 before and after verifying authenticity, thereby hiding the anti-counterfeiting graphic 20 behind the conventional graphic and further enhancing the anti-counterfeiting performance of the anti-counterfeiting label.

[0056] In another embodiment, on the side of the anti-counterfeiting graphic 20 away from the first protective layer 30, an adhesive layer (not shown in the figure) and a release layer (not shown in the figure) are also stacked. The adhesive layer allows the anti-counterfeiting label to be attached to the product packaging box or the outer surface of the product, and the release layer is used to protect the adhesive layer.

[0057] The aforementioned anti-counterfeiting label includes an anti-counterfeiting substrate 10 and anti-counterfeiting graphics 20. When the temperature is below the melting point of the filler material 102, the filler material 102 dispersed in the micropores of the substrate layer 101 is granular. At this time, light undergoes diffuse reflection on the pore walls of the micropores and the outer surface of the filler material 102, and cannot penetrate the substrate layer 101. The substrate layer 101 appears opaque, and the anti-counterfeiting graphics 20 behind the anti-counterfeiting substrate 10 is not visible. When the temperature is above the melting point of the filler material 102, the filler material 102 dispersed in the micropores of the substrate layer 101 is transparent liquid. Light can penetrate the liquid filler material 102, and the substrate layer 101 appears transparent. The anti-counterfeiting graphics 20 behind the anti-counterfeiting substrate 10 is visible. Therefore, by changing the temperature, the anti-counterfeiting graphics 20 can switch between visible and invisible states, thereby giving the anti-counterfeiting label an anti-counterfeiting function. Furthermore, its authenticity can be verified multiple times.

[0058] Please see Figure 5 One embodiment of the method for preparing the anti-counterfeiting substrate 10 includes the following steps:

[0059] Step S10: Heat the filler material 102 to change the filler material 102 from a granular state to a liquid state, and obtain a liquid form of filler material 102;

[0060] Step S20: The liquid-form filler material 102 is coated onto the substrate layer 101, which has multiple micropores, and the micropores are filled with the liquid-form filler material 102 to obtain the anti-counterfeiting substrate 10.

[0061] The coating operation is carried out in an environment with a melting point higher than that of the filler material 102, so that the filler material 102 remains liquid during the coating process. This allows the liquid filler material 102 to be adsorbed and dispersed into the micropores of the substrate layer 101. Then, the substrate layer 101 is rolled to remove the excess filler material 102 from the surface of the substrate, thus obtaining the anti-counterfeiting substrate 10.

[0062] The following are specific examples.

[0063] Example 1

[0064] Please see Figure 1 This embodiment provides an anti-counterfeiting substrate 10, which includes a substrate layer 101 and a filler material 102.

[0065] The substrate layer 101 has multiple micropores, and the filling material 102 is dispersed within the micropores of the substrate layer 101. In this embodiment, the substrate layer 101 is 80g writing paper, and the filling material 102 is sodium acetate.

[0066] When the temperature of the anti-counterfeiting substrate 10 is lower than the melting point of the filler material 102, the filler material 102 dispersed in the micropores of the substrate layer 101 is in granular form. At this time, light is diffusely reflected on the pore walls of the micropores and the outer surface of the filler material 102, and cannot penetrate the substrate layer 101, so the substrate layer 101 appears opaque. When the temperature is higher than the melting point of the filler material 102, the filler material 102 dispersed in the micropores of the substrate layer 101 is in a transparent liquid state, and light can penetrate the liquid filler material 102, so the substrate layer 101 appears transparent. Therefore, by changing the temperature, the anti-counterfeiting substrate 10 can switch between transparent and opaque states, thereby enabling the anti-counterfeiting substrate 10 to have anti-counterfeiting function.

[0067] In addition, please see Figure 2 This embodiment also provides an anti-counterfeiting label, which includes an anti-counterfeiting substrate 10 and anti-counterfeiting graphics 20. The anti-counterfeiting substrate 10 has the same structure as the anti-counterfeiting substrate 10 provided in this embodiment, and the anti-counterfeiting graphics 20 are disposed on the lower surface of the substrate layer 101.

[0068] The aforementioned anti-counterfeiting label includes an anti-counterfeiting substrate 10 and anti-counterfeiting graphics 20. When the temperature is below the melting point of the filler material 102, the filler material 102 dispersed in the micropores of the substrate layer 101 is granular. At this time, light undergoes diffuse reflection on the pore walls of the micropores and the outer surface of the filler material 102, and cannot penetrate the substrate layer 101. The substrate layer 101 appears opaque, and the anti-counterfeiting graphics 20 behind the anti-counterfeiting substrate 10 is not visible. When the temperature is above the melting point of the filler material 102, the filler material 102 dispersed in the micropores of the substrate layer 101 is transparent liquid. Light can penetrate the liquid filler material 102, and the substrate layer 101 appears transparent. The anti-counterfeiting graphics 20 behind the anti-counterfeiting substrate 10 is visible. Therefore, by changing the temperature, the anti-counterfeiting graphics 20 can be switched between visible and invisible, thereby giving the anti-counterfeiting label an anti-counterfeiting function. When used to prepare anti-counterfeiting labels, multiple verifications of authenticity can be performed.

[0069] Finally, please see Figure 5This embodiment also provides a method for preparing an anti-counterfeiting substrate 10, which includes the following steps:

[0070] (1) Heating the filler material 102 causes it to change from a particulate state to a liquid state, resulting in a liquid form of the filler material 102.

[0071] (2) The liquid form of filler material 102 is coated onto the substrate layer 101, so that the micropores are filled with the liquid form of filler material 102, thereby obtaining the anti-counterfeiting substrate 10.

[0072] Example 2

[0073] The anti-counterfeiting substrate 10 provided in this embodiment is similar to the anti-counterfeiting substrate 10 provided in Embodiment 1, except that: (1) the substrate layer 101 is glass fiber paper; (2) the filler material 102 is sodium thiosulfate.

[0074] Please see Figure 3 This embodiment also provides an anti-counterfeiting label, which is similar to the anti-counterfeiting label provided in Embodiment 1, except that: (1) the anti-counterfeiting substrate 10 has the same structure as the anti-counterfeiting substrate 10 provided in this embodiment; (2) a first protective layer 30 is provided between the anti-counterfeiting substrate 10 and the anti-counterfeiting graphic 20, and a second protective layer 40 is provided on the side of the anti-counterfeiting substrate 10 layer 101 away from the first protective layer 30.

[0075] By setting the first protective layer 30 and the second protective layer 40, on the one hand, the filling material 102 can be prevented from weathering in high temperature or dry air, which is conducive to maintaining the stability of the anti-counterfeiting substrate 10; on the other hand, it can prevent users' fingers from directly contacting the filling material 102, thus enhancing process safety.

[0076] Example 3

[0077] The anti-counterfeiting substrate 10 provided in this embodiment is similar to the anti-counterfeiting substrate 10 provided in Embodiment 1, except that: (1) the substrate layer 101 is a polyvinyl fluoride microporous membrane; (2) the filler material 102 is stearic acid.

[0078] Please see Figure 4 This embodiment also provides an anti-counterfeiting label, which is similar to the anti-counterfeiting label provided in Embodiment 1, except that: (1) the anti-counterfeiting substrate 10 has the same structure as the anti-counterfeiting substrate 10 provided in this embodiment; (2) a conventional graphic layer 50 is also provided on the side of the second protective layer 40 away from the substrate layer 101.

[0079] Setting a standard graphic layer of 50 helps to further enhance the anti-counterfeiting performance of the anti-counterfeiting label.

[0080] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A security substrate, characterized in that, The application relates to a security substrate, comprising: a substrate layer made of an opaque material, the substrate layer having a plurality of micropores, the substrate layer being paper, the paper comprising plant fibers, the plant fibers comprising main fibers and a large amount of fiber fluff; and a filling material dispersed in the micropores, the filling material having a specific melting point, the filling material being in a transparent liquid state when the temperature is higher than the melting point, and the filling material being separated from the pore wall of the micropores and broken into granular form under self-stress when the temperature is lower than the melting point, the filling material being a crystal material or an amorphous self-cracking material, the crystal material being selected from any one of sodium acetate or sodium thiosulfate, and the amorphous self-cracking material being stearic acid or palmitic acid. The melting point is 40-80 DEG C.

2. The security substrate of claim 1, wherein The application relates to a security substrate, comprising:

3. A security tag, characterized in that a security substrate having the same structure as the security substrate in any one of claims 1-2, the security substrate comprising a substrate layer; security graphics arranged on one side of the substrate layer. The side of the security graphics away from the substrate layer is further provided with a first protective layer.

4. The anti-counterfeiting label according to claim 3, characterized in that, The side of the substrate layer away from the first protective layer is further provided with a second protective layer.

5. The security label according to claim 4, characterized in that The application further relates to a method for manufacturing the security substrate, comprising the following steps:

6. A method for producing a security substrate for use in the security substrate according to any one of claims 1 to 2, characterized by, heating the filling material to change the filling material from granular form into liquid form, so as to obtain liquid filling material; coating the liquid filling material on the substrate layer, the substrate layer having a plurality of micropores, so as to fill the micropores with the liquid filling material, thereby obtaining the security substrate. ​

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