High-transparency naked-eye three-dimensional anti-counterfeiting adhesive tape and preparation method thereof

Abstract

The invention belongs to the technical field of anti-counterfeiting, and particularly relates to a high-transparency naked-eye three-dimensional anti-counterfeiting adhesive tape and a preparation method thereof. The adhesive tape comprises a silicone oil layer, a film layer, a local separation layer, a coating imaging layer, an aluminum plating layer, a printing layer and an adhesive layer from top to bottom, the coating imaging layer comprises a modified acrylic resin mixture, and the silicone oil layer is modified silicone oil. In order to solve the problems that in the prior art, the holographic effect of the surface of an adhesive tape is limited, and the stereoscopic impression is not high, the high-transparency naked-eye stereoscopic anti-fake adhesive tape and the preparation method thereof are provided, the holographic effect with the depth of 3-10 micrometers is achieved through the UV mold pressing technology, the stereoscopic impression and the dynamic effect are remarkably enhanced, and the high-transparency naked-eye stereoscopic anti-fake adhesive tape has the advantage of being high in transparency and good in anti-fake effect. And the aesthetic property and the anti-counterfeiting strength are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of anti-counterfeiting, and particularly relates to a highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape and a preparation method thereof. Background Art

[0002] The packaging of a product is usually divided into multiple levels, from the inner packaging that directly contacts the product to the outer transportation packaging. For alcoholic products, the wine bottle is usually regarded as the primary packaging, while the wine box is the outermost packaging, that is, the fourth-level packaging. The wine box is not only an important tool to protect the wine bottle from physical damage, but also a key link in brand display and anti-counterfeiting. With the increase of counterfeit and shoddy products, anti-counterfeiting technology has become increasingly important. Especially in the wine market, due to its high value and brand effect, alcoholic products are often one of the main targets of counterfeiters. Therefore, how to ensure that the wine box will not be opened without permission and can be easily identified once opened has become one of the core challenges of anti-counterfeiting technology. Adhesive tape, as an important tool to connect the various parts of the wine box, plays a key role in anti-counterfeiting. On the one hand, the adhesive tape needs to be strong enough to ensure that the wine box will not be accidentally opened during transportation; on the other hand, the adhesive tape also needs to have certain anti-counterfeiting functions to prevent malicious opening.

[0003] Holographic technology is an advanced technology widely used in the field of anti-counterfeiting. By adding holographic images to labels or other carriers, the anti-counterfeiting performance of products can be significantly improved. However, there are some limitations in traditional holographic embossing technology, especially the limited depth of the holographic effect, which is usually only 1-2 microns, which results in the holographic image not having a strong three-dimensional sense and the anti-counterfeiting effect is limited to a certain extent. Although holographic technology has been widely used in the field of anti-counterfeiting, its limitations are still obvious. Ordinary embossing methods can only produce a shallow holographic effect on the surface of the label. This shallow effect is not only visually unattractive, but also needs to be improved in terms of anti-counterfeiting performance. This is because the shallow holographic effect is easy to copy, which reduces the effectiveness of anti-counterfeiting. This shallow holographic effect not only has a weak three-dimensional sense, but also has an insufficient dynamic effect. When consumers try to distinguish the authenticity, this relatively bland visual effect may not be enough to provide enough clues to help them make judgments. Summary of the invention

[0004] In order to solve the problems of limited holographic effect and weak three-dimensional sense on the surface of adhesive tapes in the prior art, the present invention provides a highly transparent naked-eye three-dimensional anti-counterfeiting adhesive tape and a preparation method thereof. The adhesive tape achieves a holographic effect with a depth of 3-10 microns through UV molding technology, and the three-dimensional sense and dynamic effect are significantly enhanced. It has the characteristics of high transparency, and improves the aesthetics and anti-counterfeiting strength.

[0005] The invention provides a high-transparency naked-eye three-dimensional anti-counterfeiting adhesive tape, which comprises from top to bottom a silicone oil layer, a film layer, a local separation layer, a coating imaging layer, an aluminum-plated layer, a printing layer, and an adhesive layer, wherein the local separation layer comprises 10%-25% of an acrylic polymer, 40%-60% of butyl acetate, and 15%-35% of butanone, the coating imaging layer comprises a UV curing adhesive of a modified acrylic resin mixture, the silicone oil layer comprises 35%-40% of a light release agent, 25%-30% of a release agent, 20%-25% of an anchoring agent, 1%-2% of a photoinitiator, and 5%-10% of a diluent.

[0006] The film layer is a polypropylene film or a polyester film.

[0007] The silicone oil layer adopts environmentally friendly UV-curable release silicone oil. The free radical-initiated curing silicone oil is cured by a mercury lamp under nitrogen protection conditions. The release force value reaches a light peeling force value of 1-3g by adjusting the amount of light release agent and release agent in the UV silicone oil formula.

[0008] The dry silicon content of the silicone oil layer is 1.0-1.5 g / ㎡.

[0009] The adhesive tape uses a plastic roll core with an embedded RFID tag, and each roll of adhesive tape has a unique ID number, which is convenient for collecting in-and-out data, inventory counting, and client-side collection management.

[0010] The adhesive tape is provided with tear lines, and there is a complete data information between adjacent tear lines. There is a variable data information within the fixed length of the adhesive tape. To ensure that there is only one variable data information on a box, a tear line is added to the adhesive tape according to the length of the sealing tape. When sealing the box, the adhesive tape will break at the tear line position, ensuring that there is a complete data information on the sealing tape of each box.

[0011] The present invention also provides a method for preparing the above-mentioned highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape, comprising the following steps:

[0012] S1. The deep micro-nano structure is etched on the photoresist by photolithography. The thickness of the photoresist is 3-10 microns. Then the pattern is transferred to the nickel plate by electroplating. The holographic effects of the deep micro-nano structure include crystal relief effect, high-brightness cat's eye effect, donut effect, etc.

[0013] S2, using a gravure printing machine to print a local separation layer at a specific position of the film layer, the printing plate roller is an anilox roller that applies ink to a specific position, and hot air drying is performed to form a local separation layer;

[0014] S3, coating the modified acrylic resin mixture on the film layer to form a pre-dried coating imaging layer, the coating roller is 100-300 mesh, the deep grain micro-nano structure on the nickel plate in step S1 is pressed on the pre-dried coating imaging layer by means of compression molding, UV curing is performed by a high-pressure mercury lamp, and then the water-washable ink is printed inline;

[0015] S4, aluminum plating is performed on a vacuum evaporation device, the aluminum plating square resistance is 0.6-2.0Ω, and after the aluminum plating is completed, the aluminum layer covering the printed water-washed ink is removed, leaving the required text content to form an aluminum plating layer;

[0016] S5. Positioning printing is performed in the de-aluminized area of ​​the aluminized surface. The positioning printing adopts multi-color registration gravure printing and parallel line printing of data information to achieve multi-color registration, with a registration accuracy of ≤0.2mm, and online positioning coding;

[0017] S6. Online coating of UV modified silicone oil and hot melt adhesive to form silicone oil layer and adhesive layer. The silicone oil layer and adhesive layer are coated using an all-in-one machine. First, the silicone oil layer is coated on the surface of the film, and then the adhesive layer is coated on the other side of the film by changing the film surface through paper feeding. Then, the film is slit into rolls and positioned to form easy-tear lines.

[0018] Preferably, when slitting into rolls, a plastic roll core with an embedded RFID is used for reeling, and the plastic roll core has a unique ID number.

[0019] When in use, the adhesive tape is torn off through the tear line and stuck to the opening of the object to be adhered. When it is peeled off, the adhesive tape can be destroyed, and the silicone oil layer, the film layer and part of the coated imaging layer are peeled off. The remaining part of the coated imaging layer, the graphic content on the printed layer and the adhesive layer remain on the object to be adhered. The texture structure of the coated imaging layer is destroyed and cannot be restored, thereby playing an anti-counterfeiting role.

[0020] The beneficial effects of the present invention are:

[0021] The present invention realizes a 3-10 micron depth holographic effect through UV molding technology. Compared with the 1-2 micron depth in traditional technology, the three-dimensional sense and dynamic effect are significantly enhanced. This high-definition holographic effect not only increases the visual appeal, but more importantly, increases the difficulty of anti-counterfeiting. Due to the complexity and uniqueness of the deep stripe information, it is difficult for counterfeiters to accurately copy this holographic effect, thereby effectively preventing the occurrence of counterfeiting. When the adhesive tape is removed, the graphic content will be destroyed and left on the adhered object, further enhancing the anti-counterfeiting effect.

[0022] The present invention uses environmentally friendly UV modified silicone oil, which produces fewer harmful substances during the curing process than traditional silicone oil. In addition, by adjusting the formula of UV modified silicone oil, the release force value is 1.0-3.0g, and the residual adhesion rate is ≥85%, which solves the problem of pattern damage due to excessive unwinding force when the adhesive tape containing a local separation layer is unwound.

[0023] The integrated production of the silicone oil layer and the adhesive layer of the present invention not only simplifies the production process, but also significantly improves production efficiency. This efficient and environmentally friendly production method reduces energy consumption and waste of raw materials, and helps to reduce production costs. The positioning gravure printing method is used to achieve multi-color overprinting, and the overprinting accuracy reaches ≤0.2mm, which means that even very fine designs can be accurately copied to the adhesive tape. In addition, variable data information such as QR codes can be printed online to ensure that the information on each section of adhesive tape is unique. By positioning the printing of aluminum-washing ink, followed by aluminum plating and water-washing aluminum-dealuminization, aluminum-dealuminization of local areas can be achieved, leaving specific text or patterns. This method not only increases the flexibility of the design, but also further enhances the anti-counterfeiting function.

[0024] The adhesive tape of the present invention has an RFID tag built into it, which makes it easier to track the adhesive tape throughout the supply chain. RFID technology can monitor the location and status of the adhesive tape in real time, which helps inventory management and logistics tracking, and ensures the safe use of the adhesive tape. Assigning a unique ID number to each roll of adhesive tape can ensure full traceability from production to use. This is very important to prevent the adhesive tape from being abused or used for other purposes, especially in the field of anti-counterfeiting of high-value goods such as alcohol.

[0025] When the adhesive tape of the present invention is peeled off, the texture structure of the imaging layer will be destroyed and cannot be restored. This feature makes any attempt to reclose the package easily identifiable, thereby effectively preventing the product from being tampered with. By adding a tear line to the adhesive tape, it can be ensured that the adhesive tape will break at a predetermined position each time it is used, so that each adhesive tape on the box can contain a unique variable data information, which is convenient for subsequent product tracking and management.

[0026] Traditional embossing technology can only achieve shallow holographic effects, while UV embossing technology can achieve deeper and more three-dimensional holographic effects. This technological breakthrough not only improves the visual effect, but also provides stronger technical support for anti-counterfeiting. By using a modified acrylic resin mixture to make the coating imaging layer, the depth of the holographic effect can be better controlled. This material selection not only enhances the imaging quality, but also ensures that part of the graphic content can remain on the adhered object when the adhesive tape is peeled off. DETAILED DESCRIPTION

[0027] Example 1

[0028] A method for making a highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape is provided as follows:

[0029] S1. Select a photoresist plate with a thickness of 10 μm, etch the donut deep-groove micro-nano structure on the photoresist by photolithography, and then transfer the pattern to the nickel plate by electroplating.

[0030] S2. The film layer uses a 28μm BOPP film, and a gravure printing machine is used to print a local separation layer at a specific position of the BOPP film layer. The printing plate roller is an anilox roller that applies ink to a specific position, and hot air drying is used to form a local separation layer. The pattern on the printing plate roller is "turned on", and the temperature of the drying area is 60-65 degrees Celsius; the ink for the local separation layer is 15% acrylic polymer, 50% butyl acetate, and 35% butanone.

[0031] S3, using an anilox roller with mesh number of 150 to apply modified acrylic resin mixture coating TB-006, purchased from Shanghai Weikai Optoelectronic New Materials Co., Ltd., using a nickel plate with donut deep micro-nano structure for pressing imaging, the molding speed is 25m / min, and UV curing is performed using a high-pressure mercury lamp. On one side of the coated imaging layer, a water-washable ink is printed, and the viscosity of the water-washable ink is 26s for coating-2 cups.

[0032] S4. Aluminum is plated on the coated imaging layer, and the aluminum plated square resistance is 0.6Ω, and then dealuminization is performed using a water washing machine.

[0033] S5. Use BOPP multi-color gravure printing machine to print graphic content, use bright red, yellow, black and white four-color registration to print graphic content, registration accuracy ≤ 0.2mm, online positioning printing QR code information. Production speed 60m / min, color sequence is white, black, yellow, bright red.

[0034] S6. Apply modified silicone oil with a dry silicone coating amount of 1.5g / m2. The modified silicone oil includes 40% Q001 light release agent from Changzhou Jie Tu Chemical Co., Ltd., 25% Q002 release agent from Changzhou Jie Tu Chemical Co., Ltd., 25% SK-M01 anchoring agent from Shenzhen Tianqi New Material Technology Co., Ltd., 2% photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, and 8% IF001 silicone oil thinner from Beijing Yuji Technology Development Co., Ltd. The vehicle speed is 150m / min. Nitrogen with a purity of 99.999% is used for protection. The oxygen content in the UV curing environment is ≤50ppm. Three groups of high-pressure mercury lamps are turned on, and the power of each group is 60%. Apply hot melt adhesive with a glue amount of 25g / m2 and a glue temperature of 175℃. To ensure that the film does not deform, the film-penetrating path passes through three groups of cold cylinders for cooling, one group is cooled by rubber rollers, and the remaining two groups are cooled by steel rollers. The slitting and positioning are carried out to form an easy-tear line. The slitting width is 60mm. To prevent the guide roller from sticking during the slitting process, the rubber surface contact roller is an anti-stick Teflon roller. Then a plastic roll core with an RFID tag with written information is used for winding.

[0035] Example 2

[0036] A method for making a highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape is provided as follows:

[0037] S1. Select a photoresist plate with a thickness of 10 μm, etch the crystal relief deep micro-nano structure on the photoresist by photolithography, and then transfer the pattern to the nickel plate by electroplating process.

[0038] S2. The film layer uses a 28μm BOPP film, and a local separation layer is printed at a specific position of the BOPP film layer using a gravure printing machine. The printing plate roller is an anilox roller that applies ink to a specific position, and hot air drying is used to form a local separation layer. The pattern on the printing plate roller is "uncovered", and the temperature of the drying area is 60-65 degrees Celsius; the ink for the local separation layer is 20% acrylic polymer, 50% butyl acetate, and 30% butanone.

[0039] S3, using an anilox roller with mesh number of 150 to apply modified acrylic resin mixture coating TB-006 purchased from Shanghai Weikai Optoelectronic New Materials Co., Ltd. on the local separation layer of the film layer; using a nickel plate with crystal relief deep micro-nano structure for pressing imaging, the molding speed is 25m / min, and high-pressure mercury lamp is used for UV curing. Print the set position water-washable ink on the imaging surface, and the viscosity of the water-washable ink is coated-2 cups 26s.

[0040] S4. Aluminum is plated on the imaging layer, and the aluminum plated square resistance is 2.0Ω, and then aluminum is removed by using a water washing machine.

[0041] S5. Use BOPP multi-color gravure printing machine to print the graphic content, use bright red, yellow, black and white four-color registration to print the graphic content, the registration deviation is ≤0.2mm, and print the QR code information online. The production speed is 60m / min, and the color sequence is white, black, yellow, and bright red.

[0042] S6. Apply modified silicone oil with a dry silicone coating of 1.3g / m2. The modified silicone oil includes 38% Q001 light release agent from Changzhou Jietu Chemical Co., Ltd., 27% Q002 release agent from Changzhou Jietu Chemical Co., Ltd., 25% SK-M01 anchoring agent from Shenzhen Tianqi New Material Technology Co., Ltd., 1% photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, and 9% IF001 silicone oil diluent from Beijing Yuji Technology Development Co., Ltd. The vehicle speed is 150m / min, the release force is 2.0g, and nitrogen with a purity of 99.999% is used for protection. The oxygen content in the environment is ≤50ppm. Three groups of high-pressure mercury lamps are turned on, and the power of each group is 60%. Apply hot melt adhesive with a glue amount of 25g / m2 and a glue temperature of 175℃. To ensure that the film does not deform, the film-penetrating path passes through three groups of cold cylinders for cooling, one group is cooled by rubber rollers, and the remaining two groups are cooled by steel rollers. The slitting process is carried out with a slitting width of 60 mm. To prevent the guide roller from sticking during the slitting process, the rubber surface contact roller is an anti-stick Teflon roller, and a plastic roll core with an RFID tag with written information is used for winding.

[0043] Example 3

[0044] A method for making a highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape is provided as follows:

[0045] S1. Select a photoresist plate with a thickness of 3 μm, etch the high-brightness cat's eye deep-groove micro-nano structure on the photoresist by photolithography, and then transfer the pattern to the nickel plate by electroplating.

[0046] S2. The film layer uses a 28μm BOPP film, and a local separation layer is printed at a specific position of the BOPP film layer using a gravure printing machine. The printing plate roller is an anilox roller that applies ink to a specific position, and hot air drying is used to form a local separation layer. The pattern on the printing plate roller is "uncovered", and the temperature of the drying area is 60-65 degrees Celsius; the ink for the local separation layer is 20% acrylic polymer, 50% butyl acetate, and 30% butanone.

[0047] S3, online coating of UV-curable modified acrylic resin mixture coating TB-006 with an anilox roller with mesh number of 150, pressing imaging with a nickel plate with high-brightness cat's eye deep-grain micro-nano structure, molding speed of 25m / min, UV curing with high-pressure mercury lamp. Printing of set position water-washable ink on the imaging surface, the viscosity of water-washable ink is 26s for coating-2 cups.

[0048] S4. Aluminum is plated on the imaging layer, and the aluminum plated square resistance is 2.0Ω, and then aluminum is removed by using a water washing machine.

[0049] S5. Use BOPP multi-color gravure printing machine to print the graphic content, use bright red, yellow, black and white four-color registration to print the graphic content, the registration deviation is ≤0.2mm, and print the QR code information online. The production speed is 60m / min, and the color sequence is white, black, yellow, and bright red.

[0050] S6. Apply modified silicone oil with a dry silicone coating of 1.1g / m2. The modified silicone oil includes 35% Q001 light release agent from Changzhou Jietu Chemical Co., Ltd., 30% Q002 release agent from Changzhou Jietu Chemical Co., Ltd., 25% SK-M01 anchoring agent from Shenzhen Tianqi New Material Technology Co., Ltd., 1% photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, and 9% IF001 silicone oil diluent from Beijing Yuji Technology Development Co., Ltd. The vehicle speed is 150m / min, the release force is 2.8g, and nitrogen with a purity of 99.999% is used for protection. The ambient oxygen content is ≤50ppm, and 3 groups of high-pressure mercury lamps are turned on, with a power of 60% for each group. Apply hot melt adhesive with an adhesive amount of 25g / m2 and an adhesive temperature of 175℃. To ensure that the film does not deform, the film-penetrating path passes through 3 groups of cold cylinders for cooling, one group is cooled by rubber rollers, and the remaining two groups are cooled by steel rollers. The slitting process is carried out with a slitting width of 60 mm. To prevent the guide roller from sticking during the slitting process, the rubber surface contact roller is an anti-stick Teflon roller, and a plastic roll core with an RFID tag with written information is used for winding.

[0051] Comparative Example 1

[0052] A method for making a highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape is provided as follows:

[0053] S1. Select a photoresist plate with a thickness of 10 μm, etch the donut deep-groove micro-nano structure on the photoresist by photolithography, and then transfer the pattern to the nickel plate by electroplating.

[0054] S2. The film layer uses a 28μm BOPP film, and a local separation layer is printed at a specific position of the BOPP film layer using a gravure printing machine. The printing plate roller is an anilox roller that applies ink to a specific position, and hot air drying is used to form a local separation layer. The pattern on the printing plate roller is "uncovered", and the temperature of the drying area is 60-65 degrees Celsius; the ink for the local separation layer is 20% acrylic polymer, 50% butyl acetate, and 30% butanone.

[0055] S3. Use an anilox roller with a mesh number of 150 to apply the modified acrylic resin mixture coating TB-006 on the local separation layer side of the film layer, and use a nickel plate with a donut deep micro-nano structure to press the image. The molding speed is 25m / min, and a high-pressure mercury lamp is used for curing. Print the set position water-washable ink on the imaging surface, and the viscosity of the water-washable ink is 26s for coating-2 cups.

[0056] S4. Aluminum is plated on the imaging layer, and the aluminum plated square resistance is 0.6Ω, and then the aluminum is removed by a water washing machine.

[0057] S5. Use BOPP multi-color gravure printing machine to print the graphic content, use bright red, yellow, black and white four-color registration to print the graphic content, the registration deviation is ≤0.2mm, and print the QR code information online. The production speed is 60m / min, and the color sequence is white, black, yellow, and bright red.

[0058] S6. Apply modified silicone oil with a dry silicone coating amount of 2.5g / m2. The modified silicone oil includes 50% Q001 light release agent from Changzhou Jietu Chemical Co., Ltd., 20% Q002 release agent from Changzhou Jietu Chemical Co., Ltd., 20% SK-M01 anchoring agent from Shenzhen Tianqi New Material Technology Co., Ltd., 1% photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, and 9% IF001 silicone oil diluent from Beijing Yuji Technology Development Co., Ltd. The vehicle speed is 150m / min, the release force is 0.5g, and nitrogen with a purity of 99.999% is used for protection. The dry environment has an oxygen content of ≤50ppm, and 3 groups of high-pressure mercury lamps are turned on, with a power of 60% for each group. Apply hot melt adhesive with an adhesive amount of 25g / m2 and an adhesive temperature of 175℃. To ensure that the film does not deform, the film-penetrating path passes through 3 groups of cold cylinders for cooling, one group is cooled by rubber rollers, and the remaining two groups are cooled by steel rollers. The slitting process is carried out with a slitting width of 60 mm. To prevent the guide roller from sticking during the slitting process, the rubber surface contact roller is an anti-stick Teflon roller. Then a plastic roll core with an RFID tag with written information is used for rewinding.

[0059] Comparative Example 2

[0060] A method for making a highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape is provided as follows:

[0061] S1. Select a photoresist plate with a thickness of 3 μm, etch the donut deep-groove micro-nano structure on the photoresist by photolithography, and then transfer the pattern to the nickel plate by electroplating.

[0062] S2. The film layer adopts 28μm BOPP film, and a local separation layer is printed at a specific position of the BOPP film layer using a gravure printing machine. The printing plate roller is an anilox roller with ink applied to a specific position, and hot air drying is used to form a local separation layer. The pattern on the printing plate roller is "uncovered", and the temperature of the drying area is 60-65 degrees Celsius; the local separation layer, the components of the local separation layer are 5% acrylic polymer, 60% butyl acetate, and 35% butanone.

[0063] S3, using an anilox roller with mesh number of 150, a nickel plate with donut deep micro-nano structure is used to press image on the local separation layer side of the film layer, the molding speed is 25m / min, and a high-pressure mercury lamp is used for curing. The water-washable ink is printed on the imaging surface, and the viscosity of the water-washable ink is 26s for coating-2 cups.

[0064] S4. Aluminum is plated on the imaging layer, and the aluminum plated square resistance is 2.0Ω, and then aluminum is removed by using a water washing machine.

[0065] S5. Use BOPP multi-color gravure printing machine to print the graphic content, use bright red, yellow, black and white four-color registration to print the graphic content, the registration deviation is ≤0.2mm, and print the QR code information online. The production speed is 60m / min, and the color sequence is white, black, yellow, and bright red.

[0066] S6. Apply modified silicone oil with a dry silicone coating of 1.5g / m2. The modified silicone oil includes 40% Q001 light release agent from Changzhou Jietu Chemical Co., Ltd., 26% Q002 release agent from Changzhou Jietu Chemical Co., Ltd., 25% SK-M01 anchoring agent from Shenzhen Tianqi New Material Technology Co., Ltd., 1% photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, and 8% IF001 silicone oil diluent from Beijing Yuji Technology Development Co., Ltd. The vehicle speed is 150m / min, the release force is 1.0g, and nitrogen with a purity of 99.999% is used for protection. The dry environment has an oxygen content of ≤50ppm, and 3 groups of high-pressure mercury lamps are turned on, with a power of 60% for each group. Apply hot melt adhesive with an adhesive amount of 25g / m2 and an adhesive temperature of 175℃. To ensure that the film does not deform, the film-penetrating path passes through 3 groups of cold cylinders for cooling, one group is cooled by rubber rollers, and the remaining two groups are cooled by steel rollers. The slitting process is carried out with a slitting width of 60 mm. To prevent the guide roller from sticking during the slitting process, the rubber surface contact roller is an anti-stick Teflon roller, and a plastic roll core with an RFID tag with written information is used for rewinding.

[0067] The performance data of the products obtained in Examples 1-3 and Comparative Examples 1-2 are shown in the following table:

[0068]

[0069] The release force value is measured at 70±5°C and after 24h aging, and the residual adhesion rate is measured at 23±2°C and 50%±5% relative humidity.

Claims

1. Highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape, characterized by: The invention comprises from top to bottom a silicone oil layer, a film layer, a local separation layer, a coating imaging layer, an aluminum-plated layer, a printing layer, and a glue layer, wherein the local separation layer comprises 10%-25% of an acrylic polymer, 40%-60% of butyl acetate, and 15%-35% of butanone, the coating imaging layer comprises a UV-cured modified acrylic resin mixture, the silicone oil layer comprises 35%-40% of a light release agent, 25%-30% of a release agent, 20%-25% of an anchoring agent, 1%-2% of a photoinitiator, and 5%-10% of a diluent.

2. The highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape according to claim 1, characterized in that: The film layer is a polypropylene film or a polyester film.

3. The highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape according to claim 1, characterized in that: The dry silicon content of the silicone oil layer is 1.0-1.5 g / ㎡.

4. The highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape according to claim 1, characterized in that: The plastic roll core of the adhesive tape is provided with an embedded RFID chip.

5. The highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape according to claim 1, characterized in that: The adhesive tape is provided with tear lines, and a complete piece of data information is provided between adjacent tear lines.

6. The method for preparing the highly transparent naked eye three-dimensional anti-counterfeiting adhesive tape according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Etch a deep micro-nanostructure on a photoresist by photolithography, the thickness of the photoresist is 3-10 microns, and then transfer the pattern to a nickel plate by electroplating; S2, using a gravure printing machine to print a local separation layer at a specific position of the film layer, the printing plate roller is an anilox roller that applies ink to a specific position, and hot air drying is performed to form a local separation layer; S3, coating a modified acrylic resin mixture on one side of the local separation layer of the membrane layer to form a pre-dried coating imaging layer, the coating roller is 100-300 mesh, and is pressed on the pre-dried coating imaging layer by pressing and forming, and UV curing and drying is performed by a high-pressure mercury lamp to form a coating imaging layer, and then the water-washable ink is printed in-line; S4, aluminum plating is performed on a vacuum evaporation device, the aluminum plating square resistance is 0.6-2.0Ω, and after the aluminum plating is completed, the aluminum layer covering the printed water-washed ink is removed, leaving the required text content to form an aluminum plating layer; S5. Position printing is performed on the de-aluminized area of ​​the aluminized surface. The positioning printing adopts multi-color gravure printing and parallel line printing of data information; S6. Modified silicone oil and hot melt adhesive are coated on both sides of the film layer to form a silicone oil layer and an adhesive layer, and the film is cut into rolls and positioned to form easy-tear lines, and then rolled up using a plastic roll core with an RFID chip tag with embedded written information.

Images