One-piece colorful positioning concentric lens hot stamping film and manufacturing method thereof

Abstract

The present invention belongs to the technical field of holographic anti-counterfeiting, and specifically discloses an integrated colorful positioning concentric lens hot stamping film and a manufacturing method thereof, the manufacturing method comprising the following steps: coating a release coating liquid on a PET base film to obtain a release layer; positioningly coating a color coating on the release layer to obtain a colorful pattern layer; positioningly coating a UV coating on the colorful pattern layer and drying to obtain a UV information layer; transferring a pre-semi-cured concentric lens micro-nano structure special edition pattern to the UV information layer by UV molding and curing to obtain a transparent holographic image micro-nano structure layer; coating a metal reflective layer on the holographic image micro-nano structure layer; coating a hot stamping glue layer on the metal reflective layer and drying, thereby obtaining an integrated colorful positioning concentric lens hot stamping film from bottom to top. The hot stamping film manufactured by the present invention has distinct layers, rich colors, multiple anti-counterfeiting functions, and can adapt to various hot stamping methods.

Description

Technical Field

[0001] The present invention belongs to the technical field of holographic anti-counterfeiting, and more specifically, relates to an integrally formed colorful positioning concentric circle lens hot stamping film and a manufacturing method thereof. Background Art

[0002] At present, the production process of holographic positioning printing anti-counterfeiting labels generally involves pre-coating and then embossing a laser pattern on the surface of the base film, and then printing the pattern for a second time. The printed pattern is generally a random color holographic electroplated aluminum with no fixed size. For example, patent document CN206186577U discloses a colorful electroplated aluminum, which is mainly made by bonding a substrate layer, a release layer and a hot stamping adhesive layer, and a dynamic printing layer is set between the release layer and the hot stamping adhesive layer. The color and shape of the pattern on the dynamic printing layer are randomly set by a controller. This process is ordinary hot stamping colorful electroplated aluminum, which is not suitable for products with high-precision positioning size requirements, and the finished product is randomly printed with irregular colors, does not have the corresponding effect of positioning special patterns or patterns, and its printing and holographic replication cannot be produced in an integrated manner.

[0003] At present, patent document CN216849098U discloses a holographic positioning printed anti-counterfeiting label, which can be peeled off and is divided into a peeling part and a bottom part. The peeling part is composed of a plastic film layer, a laser coating, a positioning molded information layer, a positioning printed layer and a metal protective layer from top to bottom; the bottom part is composed of a release layer, an adhesive layer and a silicone oil paper layer from top to bottom. The production process of the anti-counterfeiting mark is to pre-coat a laser layer on a coater, and then use an embossing and printing all-in-one machine to process the printing and anti-counterfeiting information, that is, the processing order is embossing first and then printing, and the printing layer is located on the surface of the embossed information layer. This processing method will cause the printing layer to partially block the embossed holographic layer, causing it to lose its holographic gloss and affect the product layering effect. In the method of first embossing the positioning holographic pattern and then overprinting it with the printing layer, the plastic film after embossing is easy to deform, and its overprinting accuracy is difficult to control. The overprinted pattern will be misaligned and unclear, and this printing method uses functional magnetic ink, and the output product effect is poor. Summary of the invention

[0004] In response to the above defects or improvement needs of the prior art, the present invention provides an one-piece molded colorful positioning concentric lens hot stamping film and a method for producing the same. By first coating a colored proprietary pattern and then performing UV holographic replication on the one-piece production line, the produced hot stamping film has distinct layers, rich colors and patterns, avoiding the need for subsequent dyeing after hot stamping to form a pattern, resulting in unclear printing layers.

[0005] To achieve the above object, the present invention provides a method for manufacturing an integrally formed colorful positioning concentric lens hot stamping film, the manufacturing method comprising the following steps:

[0006] S1, coating a release coating liquid on a PET base film and drying the film to obtain a release layer;

[0007] S2, coating the release layer with a color coating in a color sequence and drying the coating to obtain a colorful pattern layer with a preset color special pattern;

[0008] S3, coating UV coating on the colorful pattern layer and drying it to obtain a UV information layer;

[0009] S4, transferring the pre-cured concentric lens micro-nano structure special pattern onto the UV information layer by UV molding and curing it again to obtain a transparent holographic image micro-nano structure layer;

[0010] S5, coating a metal reflective layer on the holographic image micro-nano structure layer;

[0011] S6, coating a hot stamping glue layer on the metal reflective layer and drying it, so as to obtain a colorful positioning concentric circle lens hot stamping film integrally formed from bottom to top.

[0012] Furthermore, in step S2, when the colored coating is applied on the release layer in a positional manner according to the color sequence, the coatings of different colors are applied in an overlapping manner or in a staggered manner.

[0013] Furthermore, in step S3, the first positioning accuracy of the UV information layer and the colorful pattern layer is not greater than 0.01 mm; preferably, the first positioning accuracy includes a first transverse positioning accuracy and a first longitudinal positioning accuracy, and both the first transverse positioning accuracy and the first longitudinal positioning accuracy are not greater than 0.01 mm.

[0014] Furthermore, in step S4, the second positioning accuracy of the concentric lens micro-nano structure special pattern and the UV information layer is not greater than 0.01 mm; preferably, the second positioning accuracy includes a second transverse positioning accuracy and a second longitudinal positioning accuracy, and the second transverse positioning accuracy and the second longitudinal positioning accuracy are both not greater than 0.01 mm.

[0015] Furthermore, in step S2, the applied color coating is dried by infrared hot air at 70°C-100°C; preferably, when drying the color coating, the temperature of the infrared hot air is first increased and then decreased within the range of 70°C-100°C.

[0016] Furthermore, in step S3, infrared hot air and ultraviolet light are used together to pre-dry the UV information layer; preferably, the temperature of the infrared hot air for drying the UV information layer is 70°C-100°C, and the wavelength of the ultraviolet light is 365nm; more preferably, the temperature of the infrared hot air for drying the UV information layer is first increased and then decreased within the range of 70°C-100°C.

[0017] Furthermore, in step S4, when the concentric lens micro-nano structure special pattern is transferred to the UV information layer by UV molding, the transfer speed is 70m / min-90m / min; preferably, the transfer speed is 80m / min.

[0018] Furthermore, in step S6, the hot stamping glue layer is dried in infrared hot air at 80°C-140°C; preferably, when drying the hot stamping glue layer, the infrared hot air is first increased and then decreased within the range of 80°C-140°C, and more preferably, the hot air speed for drying the hot stamping glue layer is 70m / min-90m / min.

[0019] Furthermore, the thickness of the release layer is 3μm-5μm, the thickness of the UV information layer is 4μm-8μm, the thickness of the metal protection layer is 200 angstroms-400 angstroms, and the thickness of the hot stamping glue layer is 5μm-8μm; preferably, the thickness of the UV information layer is 5μm-7μm.

[0020] According to another aspect of the present invention, there is provided an integrally formed colorful positioning concentric lens hot stamping film, wherein the colorful positioning concentric lens hot stamping film is made by any of the methods described above, and the colorful positioning concentric lens hot stamping film comprises a PET base film, a release layer, a colorful pattern layer, a UV information layer, a holographic image micro-nano structure layer, a metal protective layer and a hot stamping glue layer which are tightly combined from bottom to top.

[0021] In general, the above technical solution conceived by the present invention has the following technical advantages compared with the prior art:

[0022] 1. In the method for making the one-piece molded colorful positioning concentric lens hot stamping film provided by the present invention, the release layer coating, colorful pattern positioning coating, UV coating positioning coating and UV holographic replication can be completed in sequence on an integrated online device, and the colorful pattern positioning coating is carried out before the UV coating positioning coating, thereby avoiding the need to replace the equipment again to apply the colorful pattern after the subsequent hot stamping, so that the colorful pattern and anti-counterfeiting pattern of the produced hot stamping film are accurately registered, clearly layered and colorful; specifically, the UV coating positioning coating process can ensure that the pattern on the colorful pattern layer coated in the previous step is accurately registered, and the special version anti-counterfeiting background pattern (i.e., the concentric lens micro-nano structure special version pattern) is superimposed on the colorful pattern layer with a preset color special version pattern to achieve multiple anti-counterfeiting effects, greatly improving the anti-counterfeiting level; in addition, since the colorful pattern layer is coated before the UV holographic replication process, it is avoided that the downstream production line still needs to print the colorful pattern after hot stamping on the packaging and other items that need to be hot stamped, thereby causing the problem of the holographic anti-counterfeiting pattern on the hot stamping film being blocked.

[0023] 2. The first positioning accuracy of the UV information layer and the colorful pattern layer, as well as the second positioning accuracy between the concentric lens micro-nano structure special edition pattern and the colorful pattern layer of the present invention, are both less than or equal to 0.01 mm, which can ensure that the color pattern and the holographic anti-counterfeiting pattern on the produced hot stamping film are accurately positioned and have clear layers; and UV coating is applied on the color pattern layer, and then the concentric lens micro-nano structure special edition pattern is transferred to the obtained UV information layer to obtain a transparent holographic image micro-nano structure layer, which can ensure the color reproduction of the color pattern layer while ensuring the high lens effect of the holographic image micro-nano structure layer and the concave and convex three-dimensional sense of its pattern.

[0024] 3. In the present invention, the color pattern layer is dried in a hot air environment of corresponding temperature, and the UV coating is subjected to a comprehensive drying treatment in a hot air environment of corresponding temperature combined with ultraviolet light. Moreover, since the transferred concentric lens micro-nano structure special pattern is pre-cured, the obtained holographic image micro-nano structure layer is again cured with ultraviolet light after transfer, thereby avoiding the problems of heat shrinkage, deformation, reduced transparency, and distortion of holographic information of the PET base film caused by traditional high temperature and high pressure molding.

[0025] 4. The thickness of the hot stamping glue layer of the hot stamping film in the present invention is 5 μm-8 μm, which has the advantage that the thickness can ensure the lens circular reflectivity and hot stamping fastness. If it exceeds this range, the lens reflectivity will be affected and the fastness of subsequent hot stamping will be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the process of manufacturing a method for an integrated colorful positioning concentric lens hot stamping film provided by an embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of an integrated colorful positioning concentric circle lens hot stamping film provided by an embodiment of the present invention;

[0028] Figure 3 Schematic diagram of the coating structure at the coating station when preparing the colorful positioning concentric circle lens hot stamping film in the embodiment of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of a traditional hot stamping film and a colorful positioning concentric circle lens hot stamping film prepared in an embodiment of the present invention.

[0030] In the figure: 1-PET base film, 2-release layer, 3-colorful pattern layer, 4-UV information layer, 5-holographic image micro-nano structure layer, 6-metal protective layer, 7-hot stamping glue layer, 8-gravure roller, 9-liquid. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] like Figure 1 As shown, the present invention provides a process diagram of a method for manufacturing an integrated multi-colored positioning concentric lens hot stamping film, and the manufacturing method includes the following steps:

[0036] S1. Place the PET base film on the release layer coating station of the integrated in-line coating equipment, and use the coloring roller and the pressure roller at the station to coat the release layer on the PET base film. In a preferred embodiment, the PET base film is required to meet the following parameters: haze ≤ 0.5%; transverse shrinkage MD ≤ 1.5%, longitudinal shrinkage TD ≤ 0.15%;

[0037] S2, then the PET base film coated with the release layer is transferred to each color material tank position of the color coating station, and the color coating is sequentially positioned and coated with the color coating roller according to the color sequence required by the process, and then dried to obtain a colorful pattern layer, the pattern of the colorful pattern layer has a specific flower shape, such as lotus, etc., and a single flower shape can have multiple colors, and the colors coated at the corresponding positions of the flower shapes on the same version are the same;

[0038] S3, then transferring the PET base film coated with the multi-colored pattern layer to the UV coating station, and using an anilox roller to position and coat the UV coating on the multi-colored pattern layer to obtain a UV information layer. The UV coating is generally solvent-free, safe and environmentally friendly, and can reduce exhaust emissions;

[0039] S4, transferring the pre-cured concentric lens micro-nano structure special pattern onto the UV information layer by UV molding and curing it again to obtain a transparent holographic image micro-nano structure layer;

[0040] S5, coating the holographic image micro-nano structure layer with a metal reflective layer capable of reflecting the concentric lens micro-nano structure pattern;

[0041] S6. Apply a hot stamping glue layer on the metal reflective layer and dry it to obtain a colorful positioning concentric lens hot stamping film that is formed from bottom to top. This hot stamping film has a special edition color pattern and a special edition anti-counterfeiting holographic pattern, and is not a random, irregular monochrome pattern with no fixed size, so the anti-counterfeiting effect is better.

[0042] The one-piece colorful positioning concentric lens hot stamping film produced by the above production steps S1-S6 includes, from bottom to top, a PET base film, a release layer, a colorful pattern layer, a UV information layer, a holographic image micro-nano structure layer, a metal protective layer and a hot stamping glue layer which are tightly combined in sequence.

[0043] In a preferred embodiment, in step S2, when the colored coating is applied on the release layer according to the color sequence, the coatings of different colors are applied overlappingly or staggered. In this embodiment, when applying the colored coating, the coating roller is cycled multiple times to ensure uniform coating.

[0044] In a preferred embodiment, in the aforementioned step S3, before coating the UV information layer, the positioning size of the UV information layer is adjusted, that is, the positioning size of the anilox roller with UV coating is adjusted, so that the dots on the anilox roller with UV coating and the colorful pattern layer are accurately aligned, and thus the first alignment accuracy between the UV information layer and the colorful pattern layer is not greater than 0.01 mm; specifically, a microcomputer photoelectric eye can be used to detect the position of the dots with coating on the anilox roller at the UV coating station, and the movement speed of the servo motor can be controlled, so that the dots with UV coating on the anilox roller and the colorful pattern after coloring at the previous station (i.e., the colorful coating station) are accurately aligned (i.e., overlapped), so that the UV coating accurately falls on the substrate (i.e., the PET base film coated with the colorful pattern layer).

[0045] In a preferred embodiment, the aforementioned first positioning accuracy includes a first transverse positioning accuracy and a first longitudinal positioning accuracy, and both the first transverse positioning accuracy and the first longitudinal positioning accuracy are not greater than 0.01 mm. The specific accuracy can be 0.007 mm, 0.008 mm, 0.009 mm, etc., to ensure that the pattern of the hot stamping film is clear and the layers are distinct.

[0046] In a preferred embodiment, in step S4, when the concentric circular lens micro-nano structure special plate pattern is molded and transferred, the positioning size of the concentric circular lens micro-nano structure special plate pattern is first adjusted, that is, a microcomputer photoelectric eye is used to detect the size of the concentric circular lens micro-nano structure special plate pattern film on the plate roller at the holographic replication station, and the size is stretched to make the position of the concentric circular lens micro-nano structure special plate pattern and the UV information layer coated with UV coating accurately aligned, thereby making the color pattern layer and the concentric circular lens micro-nano structure special plate pattern to be coated accurately aligned, and the second alignment accuracy is not greater than 0.01mm; and the second alignment accuracy includes a second transverse alignment accuracy and a second longitudinal alignment accuracy, and the second transverse alignment accuracy and the second longitudinal alignment accuracy are both not greater than 0.01㎜.

[0047] In a preferred embodiment, in step S2, the applied colored coating is dried by infrared hot air at 70°C-100°C, such as 75°C, 80°C, 83°C, 88°C, 95°C, etc.; when drying the colored coating, the temperature of the infrared hot air is first increased and then decreased within the range of 70°C-100°C, for example, the temperature of the infrared hot air is first set to 75°C, and after drying at the lower temperature for a certain time, the temperature of the infrared hot air is increased to 95°C, and after drying at the higher temperature for a certain time, the temperature of the infrared hot air is reduced to 80°C and continued to dry until the actual demand is met; or the drying area can also be designed as a three-stage temperature drying area, first the PET base film to be dried coated with the colored coating is sent to a low-temperature drying area with a temperature of 75°C for drying for a certain time, and then sent to a high-temperature drying area with a temperature of 95°C for drying for a certain time, and finally sent to a higher temperature drying area of ​​80°C for drying.

[0048] In a preferred embodiment, in step S3, infrared hot air and ultraviolet light are used together to dry the UV information layer; the temperature of the infrared hot air for drying the UV information layer is 70°C-100°C, and the wavelength of the ultraviolet light is 365nm; more preferably, the temperature of the infrared hot air for drying the UV information layer is first increased and then decreased within the range of 70°C-100°C, for example, the temperature of the infrared hot air is first set to 70°C, and after drying at the lower temperature for a certain period of time, the temperature of the infrared hot air is increased to 90°C, and after drying at the higher temperature for a certain period of time, the temperature of the infrared hot air is decreased to 70°C and continues to dry until the UV coating is evenly dried; similarly, drying can also be performed in different areas.

[0049] In a preferred embodiment, in step S4, when the concentric lens micro-nano structure special pattern is transferred to the UV information layer by UV molding, the transfer speed is 70m / min-90m / min, and the more preferred transfer speed is 80m / min to achieve a uniform coating effect.

[0050] In a preferred embodiment, in step S6, the hot stamping glue layer is dried in infrared hot air at 80°C-140°C, and the specific temperature can be selected from 80°C, 93°C, 100°C, 110°C, 125°C, etc.; when drying the hot stamping glue layer, the infrared hot air is also first increased and then decreased within the range of 80°C-140°C to ensure uniform drying; more preferably, the hot air speed for drying the hot stamping glue layer is 70m / min-90m / min.

[0051] In a preferred embodiment, the thickness of the release layer is 3μm-5μm, such as 3μm, 4μm, and 5μm; the thickness of the UV information layer is 4μm-8μm, such as 4μm, 5μm, 6μm, 7μm, 8μm, etc.; the thickness of the metal protective layer is 200 angstroms-400 angstroms, for example, the thickness of the metal protective layer can be 250 angstroms, 260 angstroms, 270 angstroms, 280 angstroms, 290 angstroms, 300 angstroms, 310 angstroms, 320 angstroms, etc.; and the thickness of the hot stamping glue layer is 5μm-8μm, such as 5μm, 6μm, 7μm, 8μm, etc.; the more preferred thickness of the UV information layer is 5μm-7μm, such as 5μm, 6μm, 7μm, etc.

[0052] In order to illustrate the present invention, the aforementioned method provided by the present invention is described in detail below in conjunction with examples, but the following examples cannot be understood as limiting the scope of protection of the present invention.

[0053] Example 1

[0054] Combination Figure 1 This embodiment provides a method for manufacturing an integrated multi-color positioning concentric lens hot stamping film. The hot stamping film manufactured by the method is as follows Figure 2As shown, from bottom to top, it includes a plastic film layer, a release layer, a colorful pattern layer, a UV information layer, a holographic image micro-nano structure layer, a metal protection layer and a hot stamping glue layer. In this embodiment, a multifunctional coating device with multiple coating stations that can be connected in one line is used to implement the production method according to the following steps:

[0055] Step 1: Transfer the PET base film to the release layer coating station and coat the release layer using gravure printing.

[0056] like Figure 3 As shown, a gravure roller 8 with a diameter of 161 mm is used to coat the liquid 9 in the liquid tank on the PET base film 1 with a thickness of 16 μm (i.e., the plastic film layer) at a coating substrate linear speed of 60 m / min-90 m / min (preferably 80 m / min). In the centrifugal layer coating station, the liquid 9 is a release layer liquid. After multiple cycles of coating, a release layer with a thickness of 3 μm-5 μm is formed. The coating amount of the release layer liquid is between 2.0 g / ㎡ and 3.0 g / ㎡. After coating, the coated PET base film 1 is sent to an oven for drying. The temperature in the oven is divided into three temperature zones. The temperature in the middle zone is as high as 100°C, and the temperature in the two end zones is low, both of which are 80°C. The drying temperature of each zone is mainly adjusted by adjusting the infrared hot air temperature of the corresponding zone. The PET base film with the release layer is first dried in the low-temperature zone, and then sent to the middle high-temperature zone for drying, and then sent to another low-temperature zone for drying. After leaving the oven, it reaches the color coating coating station.

[0057] Step 2: Transfer the PET base film obtained in the previous step to the color coating station and apply the color pattern layer

[0058] The release layer is colored according to the designed color pattern to form a colorful pattern layer, which has no thickness requirement. Specifically, the color coating is also coated by gravure printing according to the preset color sequence. The diameter of the coating roller is 160 mm, and the coating substrate line speed is 80 m / min. The predetermined color sequence is: gold, black, special yellow, and special red. In this embodiment, the special red and the special yellow need to be overprinted, and the color after overprinting is orange. After coating, the colorful pattern layer is dried, and the drying temperature of the infrared hot air is 100°C and the hot air speed is 80 m / min.

[0059] Step 3: Transfer the PET base film obtained in the previous step to the UV coating station and coat the UV information layer.

[0060] First, a microcomputer photoelectric eye is used to detect the position of the coating dots on the anilox roller at the UV coating station, and the movement speed of the servo motor is controlled to accurately match the dots on the anilox roller with the color pattern painted at the previous station, and the positioning accuracy is maintained within 0.01mm in both the lateral and longitudinal accuracy, so that the UV coating can accurately fall on the substrate (i.e., the PET base film coated with a colorful pattern layer); then UV coating is applied on the colorful pattern layer to obtain a UV information layer with a thickness of 6μm. The UV information layer is dried by using infrared hot air at 80°C and ultraviolet light with a power of 40KW-80KW and a wavelength of 325nm to dry the UV information layer.

[0061] Step 4: Transfer the PET base film obtained in the previous step to the holographic replication station to transfer and replicate the concentric lens micro-nano structure special pattern

[0062] After the concentric lens micro-nano structure special edition pattern film is pre-cured, it is then connected to the laser embossing roller for in-line molding, that is, the cylinder pressure is used to make the pressure roller at this station position and overlap and replicate the UV information layer and the concentric lens micro-nano structure special edition pattern from top to bottom. The molding speed is consistent with the coating speed in the previous step, both of which are 80m / min. The cylinder pressure during embossing is 0.05MPa-0.1MPa, so as to transfer the specific concentric lens micro-nano structure pattern on the UV information layer. Finally, the UV coating after embossing is re-cured by irradiation with a UV lamp to obtain a fully cured transparent holographic image micro-nano structure layer.

[0063] Step 5: Aluminum is plated on the holographic image micro-nano structure layer of the PET base film obtained in the previous step by using a vacuum aluminum plater to form a metal protective layer, and the thickness of the metal protective layer is 200 angstroms;

[0064] Step 6: Apply glue on the metal protective layer to form a hot stamping glue layer

[0065] After the aluminum plating is completed, glue is applied on the metal protective layer to form a hot stamping glue layer with a thickness of 6 μm. The glue can be hot melt glue, glue or other sticky raw materials in the prior art; Figure 4 As shown, the diameter of the gravure roller for glue coating is 161mm, the coating substrate line speed is 80m / min, and the glue coating amount is 6g / m 2 -8g / m 2 and drying the glue layer in a drying tunnel with three ovens, the oven temperatures are 75°C, 95°C, and 75°C, respectively, and after drying, the following is obtained: Figure 4The bottom-up integrated colorful positioning concentric lens hot stamping film shown in Figure b has a colorful lotus flower pattern on it, and the colorful lotus flower pattern has a concentric lens holographic pattern, which has a clear texture and also makes the colorful lotus flower pattern emit colorful glare of traditional hot stamping film. Figure 4 Image a in the middle is a traditional hot stamping film, which has no colorful lotus flower pattern, but only colorful glare emitted by the concentric lens pattern.

[0066] The gravure printing method used in the above steps 1 and 2 is as follows Figure 3 As shown, the liquid 9 in the liquid tank is in contact with the gravure roller 8, and multiple rollers move in coordination under the control of a servo motor to drive the PET base film 1 to rotate relative to the liquid tank storing the liquid 9 to be coated, and the liquid 9 to be coated is coated onto the circulating PET base film 1 at a certain speed.

[0067] The hot stamping film that has passed the inspection will be cut into pieces according to the designed size to suit various hot stamping equipment of downstream customers.

[0068] The above preparation method can be applied to multifunctional coating holographic replication equipment, and the color can be dyed with one or more different dye pastes according to the designed pattern, so as to avoid the problem that the downstream production line still needs to print color patterns after hot stamping, which may easily lead to the problem of blocking the holographic anti-counterfeiting pattern; in addition, the background pattern of the concentric lens micro-nanostructure special edition pattern film (i.e., the concentric lens special edition pattern) is accurately positioned with the color pattern on the special edition color pattern layer, so that the hot stamping film has clear layers, rich colors, and complex patterns, which can achieve multiple anti-counterfeiting and greatly improve the anti-counterfeiting level.

[0069] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for manufacturing an integrated colorful positioning concentric lens hot stamping film, characterized in that: The manufacturing method is carried out on an integrated wiring device and comprises the following steps: S1. Applying a release coating liquid on a PET base film by gravure printing and drying the film to obtain a release layer with a thickness of 3 μm to 5 μm; S2, coating the release layer with colored paint in a gravure printing manner according to the color sequence, and drying the colored paint with infrared hot air, wherein the temperature of the infrared hot air is first increased and then decreased within the range of 70° C. to 100° C. to obtain a colorful pattern layer with a preset color special edition pattern; S3, coating UV coating on the colorful pattern layer, and drying the UV coating by infrared hot air and ultraviolet light, wherein the temperature of the infrared hot air is first increased and then decreased within the range of 70°C to 100°C during drying, and the wavelength of the ultraviolet light is 365nm, so as to obtain a UV information layer with a thickness of 4μm to 8μm; the first transverse positioning accuracy and the first longitudinal positioning accuracy of the UV information layer and the colorful pattern layer are both not greater than 0.01mm; S4, transferring the pre-cured concentric lens micro-nano structure special pattern to the UV information layer by UV molding at a transfer speed of 70m / min to 90m / min and curing again to obtain a transparent holographic image micro-nano structure layer; the second transverse positioning accuracy and the second longitudinal positioning accuracy of the concentric lens micro-nano structure special pattern and the UV information layer are not greater than 0.01mm; S5, coating a metal reflective layer with a thickness of 200 angstroms to 400 angstroms on the holographic image micro-nanostructure layer; S6. Apply a 5μm to 8μm thick hot stamping glue layer on the metal reflective layer, and dry the hot stamping glue layer in infrared hot air at 93℃ to 110℃. During drying, the temperature of the infrared hot air first increases and then decreases. The wind speed of the infrared hot air is 70m / min to 90m / min, thereby obtaining a colorful positioning concentric lens hot stamping film that is integrally formed from bottom to top.

2. The method for manufacturing the integrated colorful positioning concentric lens hot stamping film according to claim 1, characterized in that: In step S2, when the colored coating is applied on the release layer in a positional manner according to the color sequence, the coatings of different colors are applied in an overlapping manner or in a staggered manner.

3. The method for manufacturing the integrated colorful positioning concentric lens hot stamping film according to claim 1, characterized in that: In step S4, when the concentric lens micro-nano structure special pattern is transferred to the UV information layer by UV molding, the transfer speed is 80m / min.

4. The method for manufacturing the integrated colorful positioning concentric lens hot stamping film according to claim 1, characterized in that: The thickness of the UV information layer is 5 μm-7 μm.

5. An integrated colorful positioning concentric lens hot stamping film, the colorful positioning concentric lens hot stamping film is made by the method according to any one of claims 1 to 4, characterized in that: The colorful positioning concentric circle lens hot stamping film comprises a PET base film, a release layer, a colorful pattern layer, a UV information layer, a holographic image micro-nano structure layer, a metal protection layer and a hot stamping glue layer which are tightly combined from bottom to top.

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