Medicine aluminum foil based on infrared wave anti-fake technology

Abstract

The utility model provides a kind of medicinal aluminum foil based on infrared wave anti-fake technology, the medicinal aluminum foil sequentially includes heat-sealing layer, aluminum foil substrate layer, infrared anti-fake layer and protective layer;From the direction of aluminum foil substrate layer to protective layer, the infrared anti-fake layer sequentially includes reflecting layer, interval layer and rare earth material layer.Can improve the anti-fake effect of medicine.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical aluminum foil technology, and in particular to a pharmaceutical aluminum foil based on infrared anti-counterfeiting technology. Background Technology

[0002] Drug safety is of paramount importance. As a key material for drug packaging, pharmaceutical aluminum foil must not only have good barrier properties to prevent drugs from getting damp, oxidized, and contaminated by microorganisms, but also have reliable anti-counterfeiting characteristics to effectively curb the circulation of counterfeit drugs.

[0003] The most basic anti-counterfeiting measures for pharmaceutical aluminum foil are achieved through printing patterns such as backgrounds and micro-text, but these are easily cracked and counterfeited, and their security is insufficient.

[0004] Therefore, it is necessary to develop new pharmaceutical aluminum foil to improve anti-counterfeiting effects. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pharmaceutical aluminum foil based on infrared anti-counterfeiting technology, which has better anti-counterfeiting effect and is more stable.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a pharmaceutical aluminum foil based on infrared anti-counterfeiting technology. The pharmaceutical aluminum foil sequentially includes a heat-sealing layer, an aluminum foil substrate layer, an infrared anti-counterfeiting layer, and a protective layer. From the direction of the aluminum foil substrate layer toward the protective layer, the infrared anti-counterfeiting layer sequentially includes a reflective layer, a spacer layer, and a rare earth material layer. The surface roughness of the aluminum foil substrate layer is 0.1 to 0.2 μm.

[0008] The pharmaceutical aluminum foil based on infrared anti-counterfeiting technology provided by this utility model includes the above-mentioned layers and has excellent anti-counterfeiting effect, as detailed below:

[0009] A. Infrared anti-counterfeiting technology utilizes infrared light, which is invisible to the human eye. It has strong concealment of anti-counterfeiting information, effectively improves the anti-counterfeiting capability of drug packaging, and provides reliable protection for drug safety.

[0010] B. By controlling the surface roughness of the aluminum foil substrate layer within the aforementioned range, a strong bond can be formed between the aluminum foil substrate layer and the infrared anti-counterfeiting layer. This ensures that the infrared anti-counterfeiting pharmaceutical aluminum foil maintains stable infrared anti-counterfeiting performance and physical properties under different environmental conditions, such as significant variations in temperature and humidity. This guarantees that the anti-counterfeiting effect and protective function of the packaging remain unaffected during the storage and transportation of the medicine.

[0011] C. Using infrared detection equipment, counterfeit pharmaceutical aluminum foil can be identified quickly and accurately. In the production, distribution, and sales of pharmaceuticals, this convenient identification method helps improve the efficiency of anti-counterfeiting detection, promptly identify counterfeit drugs, and maintain market order.

[0012] Compared to ultraviolet anti-counterfeiting, this application uses infrared anti-counterfeiting, which has the following advantages: First, the fluorescent markings in ultraviolet anti-counterfeiting are easily cracked by reverse engineering, while the spectral characteristics of infrared are difficult to replicate; long-term exposure to ultraviolet light may cause fluorescence decay, while infrared materials have higher stability; moreover, the technical threshold for using infrared anti-counterfeiting is high, making it difficult to counterfeit.

[0013] Preferably, the surface roughness of the aluminum foil substrate layer is 0.1 to 0.2 μm, for example, it can be 0.001 μm, 0.002 μm, 0.003 μm, 0.004 μm, 0.005 μm, 0.006 μm, 0.007 μm, 0.008 μm, 0.009 μm or 0.01 μm, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0014] Preferably, the thickness of the heat-sealing film is 3 to 10 μm, for example, it can be 3 μm, 3.8 μm, 4.6 μm, 5.4 μm, 6.2 μm, 6.9 μm, 7.7 μm, 8.5 μm, 9.3 μm or 10 μm, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0015] Preferably, the thickness of the aluminum foil substrate layer is 20 to 50 μm, for example, it can be 20 μm, 24 μm, 27 μm, 30 μm, 34 μm, 37 μm, 40 μm, 44 μm, 47 μm or 50 μm, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0016] Preferably, the thickness of the infrared anti-counterfeiting layer is 0.1 to 0.5 μm, for example, it can be 0.1 μm, 0.15 μm, 0.19 μm, 0.24 μm, 0.28 μm, 0.33 μm, 0.37 μm, 0.42 μm, 0.46 μm or 0.5 μm, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0017] Preferably, the thickness ratio of the reflective layer, the spacer layer, and the rare earth material layer in the infrared anti-counterfeiting layer is (1.2-1.8):(2-3):1, wherein the number of reflective layers is 1.2, 1.3, 1.35, 1.4, 1.45, 1.5, 1.55, 1.6, 1.65, 1.7, 1.75, or 1.8, etc.; the number of spacer layers can be, for example, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, or 3.0, etc.

[0018] The preferred infrared anti-counterfeiting layer of this invention includes the above-mentioned layer, which has better anti-counterfeiting stability.

[0019] The reflective layer includes an Au reflective layer; the spacer layer includes a ZnS spacer layer.

[0020] Preferably, the thickness of the protective layer is 5 to 10 μm, for example, it can be 5 μm, 5.5 μm, 6 μm, 6.5 μm, 7 μm, 7.5 μm, 8 μm, 8.5 μm, 9 μm, 9.5 μm or 10 μm.

[0021] Preferably, the protective layer comprises a polyurethane layer and / or an acrylate layer.

[0022] Commonly used coating materials include polyurethane and acrylic. Polyurethane coatings have excellent abrasion resistance and flexibility, effectively protecting printed patterns from damage caused by friction and scratches; acrylic coatings have good transparency and chemical corrosion resistance, do not affect the appearance of aluminum foil and infrared anti-counterfeiting effects, and can resist the corrosion of chemicals that may be encountered during pharmaceutical packaging.

[0023] The protective layer is made by using coating processes such as roller coating, spray coating or curtain coating to ensure that the coating is evenly covered on the aluminum foil surface.

[0024] Preferably, the protective layer has anti-slip textures on the surface away from the infrared anti-counterfeiting layer.

[0025] The preferred anti-slip texture of this invention enables the pharmaceutical aluminum foil to have an anti-slip effect when held.

[0026] Preferably, the anti-slip texture includes spaced grooves.

[0027] Preferably, the depth of the groove is 0.01 to 0.1 μm, for example, it can be 0.01 μm, 0.02 μm, 0.03 μm, 0.04 μm, 0.05 μm, 0.06 μm, 0.07 μm, 0.08 μm, 0.09 μm or 0.1 μm, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0028] Preferably, the spacing between the grooves is 0.1 to 0.2 μm, for example, it can be 0.1 μm, 0.12 μm, 0.13 μm, 0.14 μm, 0.15 μm, 0.16 μm, 0.17 μm, 0.18 μm, 0.19 μm or 0.2 μm, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0029] The depth of the grooves and the spacing between the grooves are preferably set within the above-mentioned range. Since the setting of the grooves may affect the recognition of the anti-counterfeiting pattern of the infrared anti-counterfeiting layer, by setting the depth and spacing of the grooves within the above-mentioned range, the recognition effect of the infrared anti-counterfeiting pattern can be further improved while achieving the anti-slip effect.

[0030] It is worth noting that the preparation method of the pharmaceutical aluminum foil based on infrared anti-counterfeiting technology provided by this utility model can be carried out using conventional preparation processes for each layer in the field, without any special limitations.

[0031] Generally, the aluminum foil substrate layer undergoes pretreatment, which includes surface cleaning and roughening. Surface cleaning involves a combination of chemical cleaning and physical wiping to remove impurities such as oil, dust, and oxides from the aluminum foil surface. Chemical cleaning uses well-known aluminum cleaning agents, immersing the aluminum foil in the solution under appropriate temperature and time conditions, allowing the cleaning agent to react chemically with the impurities and remove them. Physical wiping uses soft non-woven cloths or sponges to further wipe the aluminum foil surface after cleaning, ensuring surface cleanliness and providing a good foundation for subsequent printing and coating processes. Roughening includes any one of mechanical polishing, chemical etching, or electrochemical treatment. Mechanical polishing uses sandpaper or grinding wheels to evenly create a fine, uneven structure on the aluminum foil surface; chemical etching uses a specific etching solution to etch tiny pits on the aluminum foil surface; electrochemical treatment utilizes the principle of electrolysis to form a rough oxide film layer on the aluminum foil surface. After roughening treatment, the surface roughness of the aluminum foil increases, the contact area between the ink and the aluminum foil increases, thereby improving the adhesion of the ink.

[0032] Compared with the prior art, the present invention has at least the following beneficial effects:

[0033] The anti-counterfeiting pattern in the pharmaceutical aluminum foil based on infrared anti-counterfeiting technology provided by this utility model is completely invisible to the naked eye in natural environments such as sunlight. It can only be observed under the detection of professional infrared equipment, thus providing higher concealment. At the same time, the infrared anti-counterfeiting layer has better weather resistance, which can better maintain the anti-counterfeiting effect. Moreover, through the design of heat-sealing layer, aluminum foil substrate layer, infrared anti-counterfeiting layer and protective layer, the water vapor barrier performance and strength requirements of pharmaceutical aluminum foil can be guaranteed, and the application prospects are broad. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of pharmaceutical aluminum foil based on infrared anti-counterfeiting technology provided in Embodiment 1 of this utility model.

[0035] In the diagram: 1. Heat-sealing layer; 2. Aluminum foil substrate layer; 3. Infrared anti-counterfeiting layer; 4. Protective layer. Detailed Implementation

[0036] To facilitate understanding of this utility model, the following embodiments are provided. Those skilled in the art should understand that these embodiments are merely illustrative and should not be construed as specific limitations on this utility model.

[0037] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Example 1

[0039] This embodiment provides a pharmaceutical aluminum foil based on infrared anti-counterfeiting technology. The pharmaceutical aluminum foil based on infrared anti-counterfeiting technology includes, in sequence, a heat-sealing layer, an aluminum foil substrate layer, an infrared anti-counterfeiting layer, and a protective layer. From the direction of the aluminum foil substrate layer toward the protective layer, the infrared anti-counterfeiting layer includes, in sequence, a reflective layer, a spacer layer, and a rare earth material layer.

[0040] The heat-sealing film has a thickness of 5 μm and is made of polyolefin resin.

[0041] The surface roughness of the aluminum foil substrate layer is 0.15 μm. The thickness of the aluminum foil substrate layer is 35 μm.

[0042] The thickness of the infrared anti-counterfeiting layer is 0.2 μm. The thickness ratio of the reflective layer, spacer layer, and rare earth material layer in the infrared anti-counterfeiting layer is 1.5:2.5:1. The reflective layer includes an Au reflective layer; the spacer layer includes a ZnS spacer layer; and the rare earth material layer contains NaYF4:Yb. 3+ / Er 3+ .

[0043] The protective layer has a thickness of 8 μm; the protective layer includes a polyurethane layer.

[0044] The protective layer has anti-slip textures on its surface away from the infrared anti-counterfeiting layer. The anti-slip textures include spaced grooves. The depth of each groove is 0.05 μm; the spacing between the grooves is 0.15 μm.

[0045] Example 2

[0046] This embodiment provides a pharmaceutical aluminum foil based on infrared anti-counterfeiting technology. The pharmaceutical aluminum foil based on infrared anti-counterfeiting technology includes, in sequence, a heat-sealing layer, an aluminum foil substrate layer, an infrared anti-counterfeiting layer, and a protective layer. From the direction of the aluminum foil substrate layer toward the protective layer, the infrared anti-counterfeiting layer includes, in sequence, a reflective layer, a spacer layer, and a rare earth material layer.

[0047] The heat-sealing film has a thickness of 10 μm and is made of polyolefin resin.

[0048] The surface roughness of the aluminum foil substrate layer is 0.1 μm. The thickness of the aluminum foil substrate layer is 50 μm.

[0049] The thickness of the infrared anti-counterfeiting layer is 0.5 μm. The thickness ratio of the reflective layer, spacer layer, and rare earth material layer in the infrared anti-counterfeiting layer is 1.2:3:1. The reflective layer includes an Au reflective layer; the spacer layer includes a ZnS spacer layer; and the rare earth material layer contains NaYF4:Yb. 3+ / Er 3+ .

[0050] The protective layer has a thickness of 10 μm; the protective layer includes a polyurethane layer.

[0051] The protective layer has anti-slip textures on its surface away from the infrared anti-counterfeiting layer. The anti-slip textures include spaced grooves. The depth of each groove is 0.01 μm; the spacing between the grooves is 0.1 μm.

[0052] Example 3

[0053] This embodiment provides a pharmaceutical aluminum foil based on infrared anti-counterfeiting technology. The pharmaceutical aluminum foil based on infrared anti-counterfeiting technology includes, in sequence, a heat-sealing layer, an aluminum foil substrate layer, an infrared anti-counterfeiting layer, and a protective layer. From the direction of the aluminum foil substrate layer toward the protective layer, the infrared anti-counterfeiting layer includes, in sequence, a reflective layer, a spacer layer, and a rare earth material layer.

[0054] The heat-sealing film has a thickness of 3μm and is made of polyolefin resin.

[0055] The surface roughness of the aluminum foil substrate layer is 0.2 μm. The thickness of the aluminum foil substrate layer is 20 μm.

[0056] The thickness of the infrared anti-counterfeiting layer is 0.1 μm. The thickness ratio of the reflective layer, spacer layer, and rare earth material layer in the infrared anti-counterfeiting layer is 1.8:2:1. The reflective layer includes an Au reflective layer; the spacer layer includes a ZnS spacer layer; and the rare earth material layer contains NaYF4:Yb. 3+ / Er 3+ .

[0057] The protective layer has a thickness of 5 μm; the protective layer includes an acrylate layer.

[0058] The protective layer has anti-slip textures on its surface away from the infrared anti-counterfeiting layer. The anti-slip textures include spaced grooves. The depth of each groove is 0.1 μm; the spacing between the grooves is 0.2 μm.

[0059] Example 4

[0060] This embodiment provides a pharmaceutical aluminum foil based on infrared anti-counterfeiting technology. Except for the thickness ratio of the reflective layer, the spacer layer and the rare earth material layer in the infrared anti-counterfeiting layer being 3:2.5:1, the pharmaceutical aluminum foil based on infrared anti-counterfeiting technology is the same as that in Embodiment 1, and will not be described again here.

[0061] Example 5

[0062] This embodiment provides a pharmaceutical aluminum foil based on infrared anti-counterfeiting technology. Except for the thickness ratio of the reflective layer, spacer layer and rare earth material layer in the infrared anti-counterfeiting layer being 0.5:2.5:1, the pharmaceutical aluminum foil based on infrared anti-counterfeiting technology is the same as that in Embodiment 1, and will not be described again here.

[0063] Comparative Example 1

[0064] This comparative example provides a pharmaceutical aluminum foil based on infrared anti-counterfeiting technology. Except for the surface roughness of the aluminum foil substrate layer being 0.05 μm, the pharmaceutical aluminum foil based on infrared anti-counterfeiting technology is the same as that in Example 1, and will not be described again here.

[0065] Comparative Example 2

[0066] This comparative example provides a pharmaceutical aluminum foil based on infrared anti-counterfeiting technology. Except for the surface roughness of the aluminum foil substrate layer being 0.4 μm, the pharmaceutical aluminum foil based on infrared anti-counterfeiting technology is the same as that in Example 1, and will not be described again here.

[0067] Comparative Example 3

[0068] This comparative example provides a pharmaceutical aluminum foil based on infrared anti-counterfeiting technology. Except that the infrared anti-counterfeiting layer is replaced with an ultraviolet anti-counterfeiting layer, and the material used for the ultraviolet anti-counterfeiting layer is the UV ink provided in Example 1 of CN113619302A, the rest of the pharmaceutical aluminum foil is the same as that in Example 1, and will not be described again here.

[0069] The water vapor transmission rate was tested using a MOCON AQUATRAN Model 1 moisture translucency meter.

[0070] Peel strength was tested using the cross-cut test method. The test results were evaluated as excellent (no peeling of the grid), good (5% < peeling area at the crisscross edge and grid intersection ≤ 15%), medium (15% < peeling area at the crisscross edge and grid intersection ≤ 35%), and poor (peeling area at the crisscross edge and grid intersection > 35%).

[0071] Infrared anti-counterfeiting performance testing: The absorption and reflection characteristics of pharmaceutical aluminum foil in different infrared bands are accurately measured using an infrared spectrometer, and the appropriate excitation wavelength and whether the anti-counterfeiting mark is clear at the excitation wavelength are recorded.

[0072] The test results of the above embodiments and comparative examples are shown in Table 1.

[0073] Table 1

[0074]

[0075]

[0076] As can be seen from Table 1:

[0077] (1) As can be seen from the comprehensive examples 1 to 3, the pharmaceutical aluminum foil based on infrared anti-counterfeiting technology provided by this utility model has the advantages of higher concealment, better weather resistance of infrared anti-counterfeiting layer, better maintenance of anti-counterfeiting effect, and clear anti-counterfeiting mark under excitation wavelength.

[0078] (2) As can be seen from the combined examples 1 and 4-5, in example 1, the thickness ratio of the reflective layer, the spacer layer and the rare earth material layer in the infrared anti-counterfeiting layer is 1.5:2.5:1. Compared with the thickness ratios of 3:2.5:1 and 0.5:2.5:1 in example 4-5 respectively, the anti-counterfeiting mark in example 1 is very clear under the excitation wavelength, while the anti-counterfeiting mark in example 5 is only generally clear under the excitation wavelength. In addition, the weather resistance is relatively reduced in example 4. This shows that by using the preferred thickness ratio of the reflective layer, the spacer layer and the rare earth material layer, this utility model can further improve the identification performance and weather resistance of anti-counterfeiting.

[0079] (3) As can be seen from the combined examples 1 and 3, the surface roughness in 1 and 2 is too high or too low, which can easily lead to a decrease in anti-counterfeiting recognition performance or a decrease in the bonding strength between the infrared anti-counterfeiting layer and the aluminum foil substrate layer, resulting in a significant decrease in weather resistance. In 3, an ultraviolet anti-counterfeiting layer is used. In ultraviolet anti-counterfeiting, the fluorescent mark is easily cracked by reverse engineering, and long-term exposure to ultraviolet light may cause fluorescence decay, resulting in insufficient stability of the anti-counterfeiting mark.

[0080] This utility model has been described in detail through the above embodiments. However, this utility model is not limited to the above detailed features, that is, it does not mean that this utility model must rely on the above detailed features to be implemented. Those skilled in the art should understand that any improvements to this utility model, equivalent substitutions for the selected technical features, additions of auxiliary technical features, and selection of specific methods, etc., all fall within the protection scope and disclosure scope of this utility model.

Claims

1. A medicinal aluminum foil based on an infrared wave anti-counterfeiting technology, characterized in that, The pharmaceutical aluminum foil comprises, in sequence, a heat-sealing layer, an aluminum foil substrate layer, an infrared anti-counterfeiting layer, and a protective layer; From the direction of the aluminum foil substrate layer toward the protective layer, the infrared anti-counterfeiting layer sequentially includes a reflective layer, a spacer layer, and a rare earth material layer; The surface roughness of the aluminum foil substrate layer is 0.1 to 0.2 μm.

2. The medicine aluminum foil based on the anti-fake technology of infrared wave according to claim 1, characterized in that, The thickness of the heat-sealing layer is 3–10 μm.

3. The pharmaceutical aluminium foil based on the anti-counterfeiting technology of infrared wave according to claim 1 or 2, characterized in that, The thickness of the aluminum foil substrate layer is 20–50 μm.

4. The medicine aluminum foil based on the anti-fake technology of infrared wave according to claim 1, characterized in that, The thickness of the infrared anti-counterfeiting layer is 0.1–0.5 μm.

5. The medicine aluminum foil based on the anti-fake technology of infrared wave according to claim 1, characterized in that, The thickness ratio of the reflective layer, the spacer layer, and the rare earth material layer in the infrared anti-counterfeiting layer is (1.2~1.8):(2~3):

1.

6. The pharmaceutical aluminium foil based on the anti-counterfeiting technology of infrared wave according to claim 1 or 5, characterized in that, The reflective layer includes an Au reflective layer; And / or, the spacer layer includes a ZnS spacer layer.

7. The pharmaceutical aluminium foil based on the infrared wave anti-counterfeit technology according to claim 1, characterized in that, The thickness of the protective layer is 5–10 μm; The protective layer includes a polyurethane layer and / or an acrylate layer.

8. The pharmaceutical aluminium foil based on the infrared wave anti-counterfeit technology according to claim 1, characterized in that, The protective layer has anti-slip textures on its surface away from the infrared anti-counterfeiting layer.

9. The pharmaceutical aluminum foil based on infrared anti-counterfeiting technology according to claim 8, characterized in that, The anti-slip texture includes spaced grooves.

10. The pharmaceutical aluminum foil based on infrared anti-counterfeiting technology according to claim 9, characterized in that, The depth of the groove is 0.01 to 0.1 μm; the spacing between the grooves is 0.1 to 0.2 μm.

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