Double-layer coated holographic positioning hot stamping mark and its production method

Abstract

The present invention belongs to the technical field of holographic hot stamping, and specifically relates to a double-layer coated holographic positioning hot stamping mark and a method for making the same. The method comprises the following steps: coating a release layer on the film layer in full; coating a first color layer on the release layer with a screen roller; coating a second color layer on the blank area of ​​the obtained first color layer with a screen roller; making a holographic positioning plate, setting a cursor and a holographic pattern on the holographic positioning plate, and rolling the holographic positioning plate onto a holographic positioning molding machine; using the obtained holographic positioning plate to position and mold a holographic pattern on the coated film, the cursor is molded on the first color layer, and the holographic pattern is molded on the second color layer; digitally printing the obtained holographic film; coating the obtained holographic film; coating the obtained coated film with a backing layer, and positioning and cutting to obtain the product. The present invention adopts a double-layer coating method, and the positioning hot stamping has high precision and uniform coating.

Description

Technical Field

[0001] The invention belongs to the technical field of holographic hot stamping, and in particular relates to a double-layer coated holographic positioning hot stamping mark and a manufacturing method thereof. Background Art

[0002] Laser holographic materials are high-tech products that combine molded holographic technology with optical, chemical, mechanical and vacuum technologies. They use laser holography and a variety of encryption technologies, special equipment, and laser holographic principles. They use 2D / 3D dynamic effects, dot matrix lithography, micro-encryption, 2D / 3D laser true color, circular grid (CD) pattern, isotope, dynamic synthesis and other personalized special anti-counterfeiting products. New holographic technologies are used to make laser holographic anti-counterfeiting packaging materials, which present three-dimensionality on a plane and create dynamic technology in stillness. However, in the process of using the holographic positioning anti-counterfeiting hot stamping film in the existing technology, due to inaccurate positioning, the production efficiency of the subsequent production process is low and the hot stamping accuracy is poor, which has not been effectively solved.

[0003] A Chinese patent with announcement number CN202641036U discloses a multi-color positioning coated anti-counterfeiting electroplated aluminum, including a base film layer, a release layer, a color layer, an aluminum plating layer and an adhesive layer. The color layer is coated with a dye into a preset color background and has a uniformly arranged area one for coating a color pattern. The area one is uniformly coated with a preset holographic pattern and has a reserved area two for coating a positioning hot stamping mark or an anti-counterfeiting mark. The area two is coated with a preset positioning hot stamping pattern or an anti-counterfeiting pattern. The Chinese invention patent application with publication number CN115946466A discloses a production process for a multi-color, multi-pattern, precise positioning holographic positioning electrochemical aluminum hot stamping film, and the production steps are as follows: S1 makes a holographic positioning nickel plate; S2 fully coats a release layer on a BOPET film; S3 partially coats the first color layer on the release layer with an anilox roller, and coats the first color layer with a fixed length stretching position; S4 partially coats the second color layer on the release layer with an anilox roller, and coats the second color layer with a fixed length stretching position ; S5 uses an anilox roller to partially coat the third color layer on the release layer, and the third color layer is positioned by fixed-length stretch coating; S6 rolls the holographic positioning nickel plate made by S1 on the holographic positioning sleeve molding machine; S7 positions and molds the coating film made by S5 on the holographic positioning sleeve molding machine; S8 aluminum-plates the holographic positioning sleeve laser film made by S7 on a vacuum aluminum plating machine; S9 fully coats the backing layer on the holographic positioning sleeve laser aluminum-plated film made by S8 on the positioning stretch coating machine. However, the above patents are prone to overlap due to the leveling of the coating, and the brightness of the molding is uneven at the overlapping position due to the large coating thickness. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a double-layer coated holographic positioning hot stamping mark and a production method thereof, which adopts a double-layer coating method, has high positioning hot stamping accuracy and uniform coating.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A method for making a double-layer coated holographic positioning hot stamping mark comprises the following steps:

[0007] S1. Fully coat the release layer on the film layer;

[0008] S2, coating the first color layer on the release layer in step S1 with a mesh roller;

[0009] S3, coating the blank area of ​​the first color layer obtained in step S2 with a screen roller to form a second color layer;

[0010] S4, making a holographic positioning plate, setting a cursor and a holographic pattern on the holographic positioning plate, and rolling the holographic positioning plate onto a holographic positioning molding machine;

[0011] S5, using the holographic positioning plate obtained in step S4 to position and mold a holographic pattern on the coating film obtained in step S3, wherein the cursor is molded on the first color layer, and the holographic pattern is molded on the second color layer;

[0012] S6, digitally printing the holographic film obtained in step S5;

[0013] S7, coating the holographic film obtained in step S6;

[0014] S8, coating the coating obtained in step S7 with a back adhesive layer, and then positioning and cutting to obtain the coating.

[0015] Preferably, in step S2, the first color layer is partially coated longitudinally, and in step S3, the second color layer is partially coated longitudinally, and the first color layer and the second color layer are overprinted with each other.

[0016] Preferably, in step S2, the screen roller for coating the first color layer is divided into several longitudinal units, both sides of each unit are transition zones, and the coating amount in the transition zone is 40-60% less than that in the center position; in step S3, the screen roller for coating the second color layer is divided into several longitudinal units, both sides of each unit are transition zones, and the coating amount in the transition zone is 40-60% less than that in the center position, and the first color layer and the second color layer overlap in the transition zone.

[0017] Preferably, the width of the transition zone is 2-3 mm.

[0018] Preferably, in step S2, the first color layer includes a light-colored color paste, and the thickness of the first color layer is 0.5-0.8 μm.

[0019] Preferably, in step S3, the second color layer includes a dark or light color paste, and the thickness of the second color layer is 0.7-1.0 μm.

[0020] Preferably, the film layer in step S1 is a biaxially stretched PET film of 15-20 μm.

[0021] Preferably, the release layer in step S1 is water wax, and the thickness of the release layer is 0.01-0.02 μm.

[0022] A double-layer coated holographic positioning hot stamping mark produced by the method.

[0023] The positive beneficial effects of the present invention are:

[0024] 1. The present invention provides a method for making a double-layer coated holographic positioning hot stamping mark, wherein the first color layer and the second color layer are overprinted with each other, and the second color layer is located in the blank area of ​​the first color layer, so as to reduce the interference of the color layer on the cursor. In the first color layer, a light color paste is added, and the cursor is molded in the first color layer during molding, so that the positioning hot stamping cursor and the background color are more obviously contrasted, and the interference of the color paste on the cursor is reduced. The positioning hot stamping precision is high, and the holographic pattern is molded in the second color layer. The color paste of the second color layer is a dark or light color paste, which maximizes the presentation of the holographic effect, and further enhances the holographic effect and improves the anti-counterfeiting strength through the positioning overprinting of digital printing. By adding variable information printing in digital printing, each mark is unique, and the anti-counterfeiting performance of the mark is high. The cursor and holographic pattern of the holographic positioning hot stamping mark made by the present invention are arranged in different areas, which can avoid the interference of the color paste in the color layer on the cursor, improve the accuracy of positioning hot stamping, and the coating is uniform, and the production efficiency is high.

[0025] 2. The first color layer and the second color layer of the present invention are both partially coated longitudinally, and the two are overprinted with each other, which can avoid the deformation of the film during the coating process and improve the accuracy of subsequent holographic positioning molding and digital overprinting. The first color layer and the second color layer are on both sides of the transition zone, and the coating amount in the transition zone is 40-60% less than that in the center position. The first color layer and the second color layer overlap only in the transition zone, making the transition between the color layers smoother, and the thickness of the combined part of the first color layer and the second color layer more uniform, reducing the damage to the holographic positioning plate caused by thickness changes, and the brightness of the resulting logo is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the first color layer screen roller of Example 1;

[0027] Figure 2 This is a schematic diagram of the structure of the second color layer screen roller of Example 1;

[0028] Figure 3 This is a schematic diagram of the structure of the first color layer screen roller of Example 2;

[0029] Figure 4 This is a schematic diagram of the structure of the second color layer screen roller of Example 2;

[0030] Figure 5 It is a schematic diagram of the structure of the double-layer coated holographic positioning hot stamping mark of the present invention;

[0031] In the figure: 1- first color layer screen roller coating area, 2- second color layer screen roller coating area, 3- first color layer screen roller transition area, 4- second color layer screen roller transition area, 5- cursor, 6- first color layer, 7- second color layer, 8- holographic pattern, 9- image and text. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with some specific embodiments.

[0033] Example 1

[0034] See also Figure 1-5 A method for making a double-layer coated holographic positioning hot stamping mark comprises the following steps:

[0035] S1. Coating a release layer on a 20 μm biaxially oriented PET film, wherein the release layer is water wax and has a thickness of 0.01 μm;

[0036] S2, coating the first color layer 6 on the release layer in step S1 with a screen roller, the first color layer screen roller is as follows Figure 1 As shown, the first color layer includes a light color paste, the coating thickness is 0.5 μm, the first color layer 6 is partially coated longitudinally, and five first color layer screen roller coating areas 1 are arranged longitudinally;

[0037] S3, the blank area of ​​the first color layer obtained in step S2 is coated with a second color layer 7 by a screen roller, and the screen roller of the second color layer is as follows: Figure 2 As shown, the second color layer includes a dark color paste, the coating thickness is 1.0 μm, the second color layer and the information layer of the first color layer are the same coating, and the color paste is the same system, the second color layer 7 is partially coated longitudinally, during coating, the first color layer screen roller and the second color layer screen roller are overprinted with each other, the second color layer is coated on the blank area of ​​the first color layer, the first color layer and the second color layer are arranged crosswise, the second color layer includes five second color layer screen roller coating areas 2, the first color layer and the second color layer are separately cross-coated, so as to avoid the interference of the color paddle in the second color layer on the cursor and improve the hot stamping accuracy;

[0038] S4, making a holographic positioning plate, setting a cursor 5 and a holographic pattern 8 on the holographic positioning plate, and keeping a radial pattern deviation of ≤0.1mm;

[0039] S5, using the coating film prepared in step S3 to emboss a holographic pattern on a holographic positioning embossing machine using the holographic positioning plate obtained in step S4, adjusting the tension of the machine and the thickness of the holographic positioning plate to make the cursor spacing equal, embossing the cursor 5 on the first color layer, and embossing the holographic pattern 8 on the second color layer;

[0040] S6, printing the holographic film obtained in step S5 with a digital printing machine to produce graphics 9, and adding variable information printing to digital printing will make each logo unique, and the anti-counterfeiting performance of the logo is high;

[0041] S7, the holographic film obtained in step S6 is aluminum-plated in a vacuum aluminum coating machine, and the thickness of the aluminum layer is 30nm;

[0042] S8, coating the aluminized film obtained in step S7 with a hot stamping adhesive layer, and then positioning and cutting the film to obtain the aluminized film.

[0043] A double-layer coated holographic positioning hot stamping mark made by the above method, see Figure 5 .

[0044] When in use, install the whole roll of logo on the fully automatic hot stamping machine, place the cursor on the electric eye of the fully automatic positioning hot stamping machine, adjust the electric eye recognition, set the hot stamping parameters, complete the hot stamping, and peel off the PET film at the same time. If the electric eye has a low recognition of the cursor, adjust the type and content of the color paste in the first color layer to improve the recognition of the cursor, thereby improving the accuracy of hot stamping.

[0045] Example 2

[0046] See also Figure 3-5 A method for making a double-layer coated holographic positioning hot stamping mark comprises the following steps:

[0047] S1. Coating a release layer on a 15 μm biaxially oriented PET film, wherein the release layer is water wax and has a thickness of 0.02 μm;

[0048] S2, coating the first color layer 6 on the release layer in step S1 with a screen roller, the first color layer screen roller is as follows Figure 3 As shown, the first color layer includes a light color paste, the coating thickness is 0.6 μm, the first color layer is partially coated longitudinally, and is longitudinally divided into five first color layer screen roller coating areas 1, and first color layer screen roller transition areas 3 are set on both sides of each area, with a width of 2 mm, and the dots at the first color layer screen roller transition area 3 are 50% printing dots, and the coating amount is 50% less than that at the center position;

[0049] S3, the blank area of ​​the first color layer obtained in step S2 is coated with a second color layer 7 by a screen roller, and the screen roller of the second color layer is as follows: Figure 4As shown, the second color layer includes a dark color paste, the coating thickness is 0.8μm, the second color layer and the information layer of the first color layer are the same coating, and the color paste is the same system, the second color layer is partially coated longitudinally, and the second color layer is longitudinally divided into five second color layer screen roller coating areas 2, and second color layer screen roller transition areas 4 are set on both sides of each area, with a width of 2mm, and the dots of the second color layer screen roller transition area 4 are 50% printing dots, and the coating amount is 50% less than that of the center position; during coating, the first color layer screen roller and the second color layer screen roller are overprinted with each other, the second color layer is coated on the blank area of ​​the first color layer, the first color layer and the second color layer are cross-coated, and each unit of the first color layer and the second color layer only overlaps the transition areas on both sides. After overprinting, even if there is swing during coating, the coating effect can be achieved, and the brightness during molding is improved;

[0050] S4, making a holographic positioning plate, keeping the radial pattern deviation ≤ 0.1 mm, and setting a cursor 5 and a holographic pattern 8 on the holographic positioning plate;

[0051] S5, using the holographic positioning plate of step S4 to emboss the holographic pattern on the coating film prepared in step S3 on a holographic positioning embossing machine, adjusting the tension of the machine and the thickness of the holographic positioning plate to make the cursor spacing equal, embossing the cursor 5 on the first color layer, and embossing the holographic pattern 8 on the second color layer;

[0052] S6, printing the holographic film obtained in step S5 with a digital printing machine to produce graphics 9, and adding variable information printing to digital printing will make each logo unique, and the anti-counterfeiting performance of the logo is high;

[0053] S7, the holographic film obtained in step S6 is aluminum-plated in a vacuum aluminum coating machine, and the thickness of the aluminum layer is 40nm;

[0054] S8, coating the aluminized film obtained in step S7 with a hot stamping adhesive layer, and then positioning and cutting the film to obtain the aluminized film.

[0055] A double-layer coated holographic positioning hot stamping mark made by the above method, see Figure 5 , see Example 1 for usage.

[0056] Example 3

[0057] See also Figure 3-5 A method for making a double-layer coated holographic positioning hot stamping mark comprises the following steps:

[0058] S1. Coating a release layer on a 18 μm biaxially oriented PET film, wherein the release layer is water wax and has a thickness of 0.02 μm;

[0059] S2, coating the first color layer 6 on the release layer in step S1 with a screen roller, the first color layer screen roller is as follows Figure 3As shown, the first color layer includes a light color paste, the coating thickness is 0.8 μm, the first color layer is partially coated longitudinally, and is longitudinally divided into five first color layer screen roller coating areas 1, and first color layer screen roller transition areas 3 are set on both sides of each area, with a width of 3 mm, and the dots in the transition area are 50% lighter than those in the middle, and the coating amount is 50% less than that in the center;

[0060] S3, the blank area of ​​the first color layer obtained in step S2 is coated with a second color layer 7 by a screen roller, and the screen roller of the second color layer is as follows: Figure 4 As shown, the second color layer includes a dark color paste, the coating thickness is 0.7μm, the second color layer and the information layer of the first color layer are the same coating, and the color paste is the same system, the second color layer is partially coated longitudinally, and the second color layer is longitudinally divided into five second color layer screen roller coating areas 2, and second color layer screen roller transition areas 4 are set on both sides of each area, with a width of 3mm, and the dots in the transition area are 50% lighter than those in the middle, and the coating amount is 50% less than that in the center; during coating, the first color layer screen roller and the second color layer screen roller are overprinted with each other, the second color layer is coated on the blank area of ​​the first color layer, the first color layer and the second color layer are cross-coated, and each unit of the first color layer and the second color layer only overlaps the transition areas on both sides. After overprinting, even if there is swing during coating, the coating effect can be achieved, and the brightness during molding is improved;

[0061] S4, making a holographic positioning plate, keeping the radial pattern deviation ≤ 0.1 mm, and setting a cursor 5 and a holographic pattern 8 on the holographic positioning plate;

[0062] S5, using the holographic positioning plate of step S4 to emboss the holographic pattern on the coating film prepared in step S3 on a holographic positioning embossing machine, adjusting the tension of the machine and the thickness of the holographic positioning plate to make the cursor spacing equal, embossing the cursor 5 on the first color layer, and embossing the holographic pattern 8 on the second color layer;

[0063] S6, printing the holographic film obtained in step S5 with a digital printing machine to produce graphics 9, and adding variable information printing to digital printing will make each logo unique, and the anti-counterfeiting performance of the logo is high;

[0064] S7, the holographic film obtained in step S6 is aluminum-plated in a vacuum aluminum coating machine, and the thickness of the aluminum layer is 40nm;

[0065] S8, coating the aluminized film obtained in step S7 with a hot stamping adhesive layer, and then positioning and cutting the film to obtain the aluminized film.

[0066] A double-layer coated holographic positioning hot stamping mark made by the above method, see Figure 5 , see Example 1 for usage.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A method for making a double-layer coated holographic positioning hot stamping mark, characterized in that: The steps include: S1. Fully coat the release layer on the film layer; S2, coating the first color layer on the release layer in step S1 with a mesh roller; S3, coating the blank area of ​​the first color layer obtained in step S2 with a screen roller to form a second color layer; S4, making a holographic positioning plate, setting a cursor and a holographic pattern on the holographic positioning plate, and pasting the holographic positioning plate roll on a holographic positioning molding machine; S5, using the holographic positioning plate obtained in step S4 to position and mold a holographic pattern on the coating film obtained in step S3, wherein the cursor is molded on the first color layer, and the holographic pattern is molded on the second color layer; S6, digitally printing the holographic film obtained in step S5; S7, coating the holographic film obtained in step S6; S8, coating the coating obtained in step S7 with a back adhesive layer, and cutting the coating film in a fixed position to obtain the coating film; Step S2: partially coating the first color layer longitudinally, and step S3: partially coating the second color layer longitudinally, wherein the first color layer and the second color layer are overprinted with each other; In step S2, the screen roller for coating the first color layer is divided into a plurality of longitudinal units, and the two sides of each unit are transition zones, and the coating amount in the transition zone is 40-60% less than that in the center position; in step S3, the screen roller for coating the second color layer is divided into a plurality of longitudinal units, and the two sides of each unit are transition zones, and the coating amount in the transition zone is 40-60% less than that in the center position, and the first color layer and the second color layer overlap in the transition zone; The width of the transition zone is 2-3 mm; The first color layer includes a light color paste.

2. The method for making a double-layer coated holographic positioning hot stamping mark according to claim 1, characterized in that: In step S2, the thickness of the first color layer is 0.5-0.8 μm.

3. The method for making a double-layer coated holographic positioning hot stamping mark according to claim 1, characterized in that: In step S3, the second color layer includes a dark or light color paste, and the thickness of the second color layer is 0.7-1.0 μm.

4. The method for making a double-layer coated holographic positioning hot stamping mark according to claim 1, characterized in that: The film layer in step S1 is a biaxially stretched PET film of 15-20 μm.

5. The method for making a double-layer coated holographic positioning hot stamping mark according to claim 1, characterized in that: In step S1, the release layer is water wax, and the thickness of the release layer is 0.01-0.02 μm.

6. A double-layer coated holographic positioning hot stamping mark produced by the method according to any one of claims 1 to 5.

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