Infrared anti-counterfeiting structure

Abstract

The utility model discloses an infrared anti-counterfeiting structure. The infrared anti-counterfeiting structure comprises a transparent protective layer, a temperature-sensitive ink layer, a long-wave-pass filtering layer, a photo-thermal conversion layer and a lower protective layer which are arranged from outside to inside. According to the infrared anti-fake structure, the transparent protective layer, the temperature-sensitive ink layer, the long-wave-pass filtering layer, the photo-thermal conversion layer and the lower protective layer are arranged, visible light can be filtered through the long-wave-pass filtering layer, infrared light passes through the long-wave-pass filtering layer and irradiates the photo-thermal conversion layer, the temperature of the photo-thermal conversion layer rises, the temperature-sensitive ink layer is heated, and the infrared anti-fake effect is achieved. The temperature of the temperature-sensitive ink layer rises, the color of the temperature-sensitive ink layer is changed, the anti-fake identification effect is achieved, infrared light and visible light are needed in the anti-fake process to not identify fake, the temperature-sensitive ink layer can respond only after irradiation is conducted for a certain time, and therefore the safety of the anti-fake structure is improved in the time dimension, and the imitation difficulty is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-counterfeiting, in particular to an infrared anti-counterfeiting structure. Background Art

[0002] Optical anti-counterfeiting technology is an anti-counterfeiting technology designed and manufactured using optical principles. By utilizing the characteristics of optical effects, the product or object has unique optical characteristics, thereby achieving an anti-counterfeiting effect.

[0003] The most widely used anti-counterfeiting method is to use the fluorescence phenomenon of certain substances under light of a specific wavelength to prevent counterfeiting. Through pre-designed patterns, under light of a specific wavelength, fluorescence will be directly generated in a short period of time to achieve the purpose of counterfeiting.

[0004] However, the above anti-counterfeiting methods have low security and are relatively easy to imitate.

[0005] Therefore, it is necessary to provide an infrared anti-counterfeiting structure to solve the above technical problems. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an infrared anti-counterfeiting structure which can improve the security of the anti-counterfeiting structure.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] The infrared anti-counterfeiting structure includes: a transparent protective layer, a temperature-sensitive ink layer fixedly connected to the bottom of the transparent protective layer, a long-wave pass filter layer fixedly connected to the bottom of the temperature-sensitive ink layer, a photothermal conversion layer fixedly connected to the bottom of the long-wave pass filter layer, and a lower protective layer fixedly connected to the bottom of the photothermal conversion layer.

[0009] Preferably, the transparent protective layer is made of transparent PE or PET material.

[0010] Preferably, the lower protective layer is made of plastic material, and an adhesive layer is arranged at the bottom thereof.

[0011] Preferably, the temperature-sensitive ink layer is an anti-counterfeiting pattern composed of temperature-sensitive ink.

[0012] Preferably, the long-wave pass filter layer is composed of a composite of polyurethane and chalcogenide glass.

[0013] Preferably, the light-to-heat conversion layer consists of lignin.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The utility model is provided with a transparent protective layer, a temperature-sensitive ink layer, a long-wave filter layer, a photothermal conversion layer and a lower protective layer. The long-wave filter layer can filter visible light, and infrared light passes through and irradiates the photothermal conversion layer. The temperature of the photothermal conversion layer rises, and the temperature-sensitive ink layer is heated. The temperature of the temperature-sensitive ink layer rises, and the color changes, which plays an anti-counterfeiting identification effect. The anti-counterfeiting process requires infrared light, and visible light cannot be used for counterfeiting. In addition, a certain amount of irradiation time is required to make the temperature-sensitive ink layer respond. Therefore, the security of the anti-counterfeiting structure is also improved in the time dimension, and the difficulty of counterfeiting is increased;

[0016] (2) The utility model provides a photothermal conversion layer composed of lignin, so that the photothermal conversion layer can absorb infrared light and increase the temperature;

[0017] (3) The utility model provides a long-wave filter layer composed of a composite of polyurethane and chalcogenide glass, which can effectively attenuate visible light and efficiently pass infrared light;

[0018] (4) The present invention provides a temperature-sensitive ink layer composed of non-fully covered temperature-sensitive ink, which facilitates the passage of infrared light. When the temperature rises, the color of the ink changes and a specific pattern is formed, thereby achieving a dual anti-counterfeiting effect of color and pattern.

[0019] (5) The utility model provides a transparent protective layer made of transparent PE or PET material, which facilitates the passage of light and effectively protects the temperature-sensitive ink layer;

[0020] (6) The utility model provides a lower protective layer of plastic material and an adhesive layer at the bottom thereof, thereby protecting the light-to-heat conversion layer and facilitating the structure to be attached to other objects for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of the infrared anti-counterfeiting structure provided by the utility model.

[0022] Among them, the names corresponding to the figure marks are: 1-transparent protective layer, 2-temperature sensitive ink layer, 3-long wave pass filter layer, 4-photothermal conversion layer, 5-lower protective layer. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0024] Embodiment 1:

[0025] like Figure 1As shown, the infrared anti-counterfeiting structure provided by the utility model comprises: a transparent protective layer 1, a temperature-sensitive ink layer 2 is fixedly connected to the bottom of the transparent protective layer 1, a long-wave pass filter layer 3 is fixedly connected to the bottom of the temperature-sensitive ink layer 2, a light-to-heat conversion layer 4 is fixedly connected to the bottom of the long-wave pass filter layer 3, and a lower protective layer 5 is fixedly connected to the bottom of the light-to-heat conversion layer 4. When in use, infrared light is irradiated inward from one side of the transparent protective layer 1. Since the temperature-sensitive ink layer 2 is not completely covered by the long-wave pass filter layer 3, the infrared light irradiates the long-wave pass filter layer 3 from the gap of the temperature-sensitive ink layer 2, and passes through the long-wave pass filter layer 3 to irradiate the light-to-heat conversion layer 4. The light-to-heat conversion layer 4 absorbs infrared light, converts light energy into heat energy, and conducts it upward to the temperature-sensitive ink layer 2, so that the temperature of the temperature-sensitive ink layer 2 gradually increases. After a certain period of time, the temperature-sensitive ink layer 2 changes into a specific color and pattern, thereby achieving a double anti-counterfeiting recognition effect.

[0026] By setting the transparent protective layer 1, the temperature-sensitive ink layer 2, the long-wave pass filter layer 3, the photothermal conversion layer 4 and the lower protective layer 5, the long-wave pass filter layer 3 can be used to filter visible light, and infrared light can pass through and irradiate the photothermal conversion layer 4. The temperature of the photothermal conversion layer 4 increases, heating the temperature-sensitive ink layer 2. The temperature of the temperature-sensitive ink layer 2 increases and changes color, which has an anti-counterfeiting identification effect. The anti-counterfeiting process requires infrared light, and visible light cannot be used for identification, and a certain amount of irradiation time is required to make the temperature-sensitive ink layer 2 respond. Therefore, the security of the anti-counterfeiting structure is also improved in the time dimension, and the difficulty of imitation is increased.

[0027] Embodiment 2:

[0028] The light-to-heat conversion layer 4 is composed of lignin. When in use, under the irradiation of infrared light, the lignin can convert the light energy of the infrared light into heat energy, thereby increasing its temperature.

[0029] By configuring the photothermal conversion layer 4 to be composed of lignin, the photothermal conversion layer 4 can absorb infrared light and increase in temperature.

[0030] Embodiment 3:

[0031] The long-wave filter layer 3 is composed of a composite of polyurethane and chalcogenide glass. The chalcogenide glass is evenly dispersed in the polyurethane as a powder, which can effectively attenuate visible light and efficiently pass infrared light.

[0032] By arranging the long-wave pass filter layer 3 to be composed of a composite of polyurethane and chalcogenide glass, the long-wave pass filter layer 3 can effectively attenuate visible light and efficiently pass infrared light.

[0033] Embodiment 4:

[0034] The temperature-sensitive ink layer 2 is an anti-counterfeiting pattern composed of temperature-sensitive ink. The anti-counterfeiting pattern can be designed according to actual needs and will not be elaborated here. The design of the anti-counterfeiting pattern makes the temperature-sensitive ink layer 2 not completely cover the surface of the long-wave pass filter layer 3. The gaps in the anti-counterfeiting pattern allow infrared light to pass through, so that the infrared light can pass through the temperature-sensitive ink layer 2 and be absorbed by the photothermal conversion layer 4. When the temperature of the temperature-sensitive ink layer 2 changes, the temperature-sensitive ink will change color, thereby achieving an anti-counterfeiting effect.

[0035] By providing a temperature-sensitive ink layer 2 composed of non-fully covered temperature-sensitive ink, infrared light can pass through easily, and when the temperature rises, its own color changes to form a specific pattern, thereby achieving a dual anti-counterfeiting effect of color and pattern.

[0036] Embodiment 5:

[0037] The transparent protective layer 1 is made of transparent PE or PET material. When in use, the transparent protective layer 1 can effectively protect the temperature-sensitive ink layer 2 and facilitate the passage of light.

[0038] By providing a transparent protective layer 1 made of transparent PE or PET material, light can pass through easily and the temperature-sensitive ink layer 2 can be effectively protected.

[0039] Embodiment 6:

[0040] The lower protective layer 5 is made of plastic material. When in use, the lower protective layer 5 plays a role in protecting the light-to-heat conversion layer 4. An adhesive layer is arranged at the bottom thereof to facilitate pasting the structure on other objects.

[0041] By providing a lower protective layer 5 made of plastic material and providing an adhesive layer at the bottom thereof, the light-to-heat conversion layer 4 can be protected, and the structure can be conveniently attached to other objects for use.

[0042] Working principle: When in use, infrared light of a specific intensity will irradiate the structure. The infrared light irradiates inward from one side of the transparent protective layer 1. Since the temperature-sensitive ink layer 2 is not completely covered by the long-wave pass filter layer 3, the infrared light irradiates the long-wave pass filter layer 3 from the gap in the temperature-sensitive ink layer 2, and passes through the long-wave pass filter layer 3 to irradiate the photothermal conversion layer 4. The photothermal conversion layer 4 absorbs infrared light, converts light energy into heat energy, and conducts it upward to the temperature-sensitive ink layer 2, so that the temperature of the temperature-sensitive ink layer 2 gradually increases. After a certain period of irradiation, the temperature-sensitive ink layer 2 changes to a specific color and pattern, thereby achieving a double anti-counterfeiting identification effect.

Claims

1. An infrared anti-counterfeiting structure, characterized in that: include: Arranged from the outside to the inside are a transparent protective layer (1), a temperature-sensitive ink layer (2), a long-wave pass filter layer (3), a light-to-heat conversion layer (4), and a lower protective layer (5).

2. The infrared anti-counterfeiting structure according to claim 1, characterized in that: The transparent protective layer (1) is made of PE or PET material.

3. The infrared anti-counterfeiting structure according to claim 1, characterized in that: The temperature-sensitive ink layer (2) is an anti-counterfeiting pattern composed of temperature-sensitive ink.

4. The infrared anti-counterfeiting structure according to claim 1, characterized in that: The light-to-heat conversion layer (4) is composed of lignin.

5. The infrared anti-counterfeiting structure according to claim 1, characterized in that: The lower protective layer (5) is made of plastic material, and an adhesive layer is provided at the bottom of the lower protective layer (5).

Images