Unveiling verification information anti-counterfeiting card and preparation method thereof

Abstract

The present invention belongs to the technical field of anti-counterfeiting labels, and specifically relates to an anti-counterfeiting card with information that can be peeled off and verified, and a method for preparing the same. The card comprises a plastic film layer, a coating layer, a molded holographic information layer, a transfer coating layer, a polyamide layer, a first printing layer, a pressure-sensitive adhesive layer, a holographic rainbow transfer layer, a first glue layer, and a substrate layer, arranged sequentially from top to bottom. The holographic rainbow transfer layer comprises a laser-molded information layer and an aluminum-plated layer, with the laser-molded information layer located above the aluminum-plated layer. The anti-counterfeiting card can be peeled off and is divided into a peeling portion and a bottom portion. The peeling portion is the portion above the transfer coating layer, and the bottom portion is the portion below the transfer coating layer. After the anti-counterfeiting card of the present invention is peeled off, both the upper and lower surfaces of the peeling portion display a hidden laser effect, while the bottom portion displays a rainbow holographic effect and a hidden laser effect. Consumers can identify the hidden information and determine the authenticity of the label. When the label is glued together again, the hidden laser information remains visible. The preparation method is simple and easy.

Description

Technical Field

[0001] The invention belongs to the technical field of anti-counterfeiting marks, and in particular relates to an anti-counterfeiting card for revealing verification information and a preparation method thereof. Background Art

[0002] Counterfeit and shoddy goods cause significant harm and losses to businesses and consumers. Anti-counterfeiting technology is one way to prevent counterfeiting. The development of anti-counterfeiting technology can help purify the market by providing labels and security cards that are difficult to forge and can quickly verify product authenticity, thereby protecting the legitimate rights and interests of authentic product manufacturers and consumers.

[0003] Most of the anti-counterfeiting cards on the market today are of a relatively simple form and have a relatively simple manufacturing process, making them easy to be counterfeited or transferred for secondary use.

[0004] CN202601083U announced a submersible laser-type plastic film anti-counterfeiting label, which includes, from top to bottom, a scraping ink layer, a plastic film substrate layer, an information layer, a separation layer, a digital printing layer, and an adhesive layer. The information layer is prepared on the bottom surface of the plastic film substrate layer by a mold embossing process. The surface of the information layer has regular or irregular concave and convex patterns, and is tightly pressed against the separation layer. The submersible laser-type plastic film anti-counterfeiting label embeds laser information into the label body. The information is not visible before it is uncovered, and only appears after it is uncovered. In this way, counterfeiters do not know what anti-counterfeiting technology is in the label body from the outside, making it difficult to counterfeit. After it is uncovered, the laser information remains on the surface of the object to be attached and cannot be transferred as a whole. The label can be scratched for anti-counterfeiting query or uncovered for anti-counterfeiting query in a variety of ways.

[0005] Furthermore, the anti-counterfeiting information on the label is relatively simple, resulting in limited anti-counterfeiting effectiveness. Currently available peel-off anti-counterfeiting cards are easily peeled off from the base paper layer when peeled off, resulting in a chaotic layering of the card and making it impossible to break the transfer layer. This prevents the laser information and hidden variable information from being displayed. Summary of the Invention

[0006] In view of the deficiencies of the above-mentioned prior art, the present invention provides an anti-counterfeiting card with information that can be peeled off for verification. The card has a laser concealment effect, is difficult to forge and can be quickly identified. When peeled off for verification, the anti-counterfeiting card is destroyed in layers, which can effectively prevent secondary use. After the anti-counterfeiting card is peeled off, both the upper and lower sides of the peeled-off part show a hidden laser effect, and the remaining part shows a rainbow holographic effect and hidden laser information. Consumers can judge the authenticity of the label by identifying the hidden information. At the same time, when the card is glued together again, the hidden laser information is still displayed, making the anti-counterfeiting card exclusive. The present invention also provides a preparation method thereof, which is scientific, reasonable, simple and easy to implement.

[0007] The anti-counterfeiting card of the present invention includes, arranged in order from top to bottom, a plastic film layer, a coating layer, a molded holographic information layer, a transfer coating layer, a polyamide layer, a first printing layer, a pressure-sensitive adhesive layer, a holographic rainbow transfer layer, a first glue layer, and a substrate layer; the holographic rainbow transfer layer includes a laser molded information layer and an aluminum-plated layer, wherein the laser molded information layer is located above the aluminum-plated layer;

[0008] The anti-counterfeiting card can be opened and is divided into a peeling part and a bottom part. The peeling part is the part above the transfer coating, and the bottom part is divided into the transfer coating and the part below the transfer coating.

[0009] in:

[0010] The plastic film layer is a 12-38 μm plastic film, which is one of PP film, PET film or holographic washed aluminum film.

[0011] The coating is a transparent layer, which is a colorless transparent layer or a light transparent layer, preferably a light transparent layer (the light transparent layer is more prominent than the colorless transparent layer in the embossed holographic information display), and a embossed holographic information layer is formed on the surface after embossing.

[0012] The transfer coating has a thickness of 0.8-3 microns. The transfer coating is coated below the embossed holographic information layer, and the embossed holographic information is hidden.

[0013] The polyamide layer improves the adhesion of the printed layer. The transfer coating is a local coating, and the embossed holographic information not covered by the transfer coating is further covered by the polyamide layer, thereby hiding the embossed holographic information.

[0014] The first printed layer information includes graphics and variable information, and the variable information can be a two-dimensional code, a one-dimensional code, a variable number, etc.

[0015] Preferably, a partial covering layer is provided above the plastic film layer at a position corresponding to the variable information of the first printing layer, so as to partially or completely cover the variable information.

[0016] Preferably, a prompt graphic layer is provided above the local covering layer.

[0017] The substrate layer is one of cardboard, coated paper or synthetic paper, with a thickness of 30-350g / m 2 .

[0018] Preferably, a second printing layer is provided below the substrate layer.

[0019] The method for preparing the anti-counterfeiting card for uncovering and verifying information of the present invention comprises the following steps:

[0020] 1) coating a transfer laser aluminized coating on a PET film, and performing embossing using an embossing and printing all-in-one machine to obtain a laser embossed information layer;

[0021] 2) Full-plate aluminum plating is performed using vacuum aluminum plating technology to obtain an aluminum plating layer, and the laser molded information layer and the aluminum plating layer constitute a holographic rainbow transfer layer;

[0022] 3) The holographic rainbow transfer layer is compounded with the substrate layer, and the PET layer is peeled off to form a substrate layer with a holographic rainbow effect;

[0023] 4) applying a coating below the plastic film layer;

[0024] 5) performing embossing on the coating to form an embossed holographic information layer;

[0025] 6) Applying a transfer coating on the embossed holographic information layer, after which the embossed holographic information disappears;

[0026] 7) applying a polyamide layer on the transfer coating;

[0027] 8) printing on the polyamide layer to form a first printed layer, wherein information on the first printed layer includes variable information;

[0028] 9) Compounding the variable information surface with the rainbow holographic effect surface of the base material layer with the rainbow holographic effect, and die-cutting the surface to form an anti-counterfeiting card with information to be opened and verified.

[0029] In step 1), the coating amount of the transfer laser coating is 1.2-1.3g / m 2 The T-peel strength between the transfer laser coating and the PET film is less than 0.0015 N / mm (GB / T2791-1995 Adhesive T-peel Strength Test Method Flexible Material to Flexible Material). If the T-peel strength is greater than 0.0015 N / mm, it is easy to cause incomplete transfer or blistering during peeling, affecting the surface effect of the finished logo and the secondary use of the PET film. Preferably, in step 1), the transfer laser aluminum coating used is BH-1001C transfer laser aluminum coating, purchased from Shanghai Weikai Optoelectronic New Materials Co., Ltd.

[0030] In step 4), the coating is applied with laser aluminizing paint, and the laser aluminizing paint is preferably FL-7104B composite laser aluminizing paint, which is purchased from Shanghai Weikai Chemical Co., Ltd. The coating process is: 150-250 mesh electro-engraving roller coating, and the coating amount is 0.5-0.8g / m 2 , drying temperature: 90-120-180-180-140℃, speed: 70m / min.

[0031] In step 5), embossing is performed using an embossed information plate. Preferably, the embossed information plate is prepared using point light source encryption technology. After embossing, the laser information cannot be observed under natural light, but can be observed using a point light source such as a mobile phone light. Specifically, when observing the surface of the sign, the embossed laser information is not visible. After the sign is uncovered, the hidden embossed laser information is also not visible. Only after uncovering and illuminating with a point light source can the embossed laser information be made visible.

[0032] In step 6), the transfer coating is applied using UV coating liquid, brand 1580, purchased from Shanghai Yima Industrial Co., Ltd. The coating process is anilox roller coating, mesh size is 180-360 mesh, and UV light curing.

[0033] In step 7), the coating amount of the polyamide layer is 1.0-3.5 g / m 2 . The coating process is: the polyamide material is dissolved in isopropyl alcohol and then coated, the coating temperature is 70-90℃, the mesh number of the anilox roller is 100-250 mesh, the coating viscosity (coating-4 cups): 13-20″, and the vehicle speed is 50m / min. When there is no polyamide layer, the printed graphics on the first printing layer are easy to fall off from the transfer coating when it is peeled off, resulting in no laser information display in part when it is peeled off. After the polyamide layer is coated, the T-peel strength between the transfer coating and the molded holographic information layer is: 0.0010-0.0030N / mm (GB / T2791-1995 Adhesive T-peel strength test method flexible material to flexible material). When the T-peel strength is less than 0.0010, it is easy to stick back during printing. When the T-peel strength is greater than 0.0030N / mm, it is easy to cause the first printing layer to be damaged when it is peeled off.

[0034] In step 9), the variable information surface and the rainbow holographic effect surface of the substrate layer with a rainbow holographic effect are compounded together using pressure-sensitive adhesive. Preferably, the pressure-sensitive adhesive is applied in a local coating manner, which may be that one of the edges is not coated, or that the entire surface is coated in a dot-like or stripe-like manner, to achieve local compounding. After local compounding using UV pressure-sensitive adhesive, it is cured by UV light, with a process parameter of 115 mesh and positioning plate printing. The reason for this design is that when the card logo is uncovered, it is easy to peel off from the substrate paper layer, causing the card to be chaotically layered and unable to be destroyed from the transfer layer, resulting in the logo uncovering the laser information and the hidden variable information being unable to be displayed.

[0035] When consumers identify authenticity:

[0036] 1. Observe the surface of the anti-counterfeiting card, which has a metallic luster and rainbow holographic effect, and the hidden holographic laser effect is not displayed; when peeled off, the anti-counterfeiting card is divided into a peeling part and a bottom part. The front and back of the peeling part show the hidden transparent laser information, and the bottom part shows the hidden aluminum-plated holographic laser information; when it is reassembled, the laser information is still displayed and cannot be restored.

[0037] 2. Scanning the variable information on the first printed layer can achieve functions such as anti-counterfeiting, traceability, and prize redemption. Scanning the variable information on the first printed layer can prompt verification of laser information.

[0038] 3. For the technical solution where a partial covering layer is provided above the plastic film layer at the position corresponding to the variable information on the first printed layer, the variable information on the first printed layer is revealed after being uncovered, thereby realizing functions such as anti-counterfeiting, traceability, and prize redemption. Scanning the variable information on the first printed layer will prompt verification of the laser information.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. Adopt covert anti-counterfeiting technology, easy to identify: the laser embossed information will not be displayed before it is peeled off. After the anti-counterfeiting card is peeled off, the laser embossed information can be displayed on the upper and lower surfaces of the peeled part and the surface of the bottom part.

[0041] 2. A breakthrough in laser penetration technology has been achieved, achieving transparent laser hidden information display and aluminum-plated holographic (holographic rainbow) and laser hidden information display functions at the same time. Currently, aluminum-plated holographic laser hidden signs on the market are usually covered with an opaque substrate. When the substrate is peeled off, the obscured laser information can be seen, but no aluminum-plated information can be seen.

[0042] 3. It provides the process parameters for secondary use of laser transfer, which is environmentally friendly. Using this technology, the film used for transfer can theoretically be recycled indefinitely.

[0043] 4. The anti-counterfeiting card is destroyed after being peeled off. At the same time, the process provided solves the problem of incomplete printed images and texts after peeling off and the problem of no laser information after peeling off, and the product quality is stable.

[0044] 5. The holographic rainbow is integrated with the printed pattern, and it carries holographic anti-counterfeiting information. It is colorful and beautiful, with a metallic luster, a strong three-dimensional sense, and a strong visual impact. It is not easy to be imitated, has a good anti-counterfeiting effect, and is intuitively identified, with a good anti-counterfeiting effect. The anti-counterfeiting card is destroyed during the verification process, which can effectively prevent secondary use. It meets the enterprise's requirements for high anti-counterfeiting performance, improves the grade of the product and increases its aesthetics, and is suitable for high-end products.

[0045] 6. The preparation method of the present invention is scientific, reasonable, simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 1 is a schematic diagram of the layer structure of the anti-counterfeiting card for uncovering verification information according to embodiment 1 of the present invention;

[0047] Figure 2 Schematic diagram of the layer structure of the anti-counterfeiting card for uncovering verification information according to embodiment 2 of the present invention;

[0048] Figure 3The left side is a rendering of the present invention's unveiled verification information anti-counterfeiting card, the middle is a rendering of the present invention's unveiled verification information anti-counterfeiting card's bottom portion after being unveiled, and the right side is a rendering of the present invention's unveiled verification information anti-counterfeiting card's peeled portion after being unveiled. Figure 3 The logo shown does not have a prompt graphic layer, and the rest of the parts are the same as those in Example 2;

[0049] In the figure: 1. Plastic film layer; 2. Coating layer; 3. Embossed holographic information layer; 4. Transfer coating layer; 5. Polyamide layer; 6. First printing layer; 7. Pressure-sensitive adhesive layer; 8. Laser-embossed information layer; 9. Aluminum-plated layer; 10. First glue layer; 11. Base material layer; 12. Partial covering layer; 13. Prompt graphic layer; 14. Second printing layer. DETAILED DESCRIPTION

[0050] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0051] Unless otherwise specified, the raw materials used in the examples are common commercially available raw materials.

[0052] Example 1

[0053] like Figure 1 As shown, the anti-counterfeiting card with uncovered verification information includes, from top to bottom, a plastic film layer 1, a coating layer 2, an embossed holographic information layer 3, a transfer coating layer 4, a polyamide layer 5, a first printing layer 6, a pressure-sensitive adhesive layer 7, a holographic rainbow transfer layer, a first glue layer 10, and a substrate layer 11. The holographic rainbow transfer layer includes a laser-embossed information layer 8 and an aluminum-plated layer 9, and the laser-embossed information layer 8 is located above the aluminum-plated layer 9.

[0054] The anti-counterfeiting card can be opened and is divided into a peeling part and a bottom part. The peeling part is the part above the transfer coating 4, and the bottom part is divided into the transfer coating 4 and the part below the transfer coating 4.

[0055] in:

[0056] The plastic film layer 1 is a 12 μm plastic film, which is a PET film.

[0057] The coating layer 2 is a light-colored transparent layer, and after molding, a molded holographic information layer 3 is formed on the surface.

[0058] The thickness of the transfer coating 4 is 3 microns.

[0059] The information of the first printed layer 6 includes graphics and variable information (two-dimensional code).

[0060] The method for preparing the anti-counterfeiting card for uncovering and verifying information comprises the following specific steps:

[0061] 1) Coating a transfer laser aluminized coating on a PET film and embossing the film using an embossing and printing integrated machine to obtain a laser embossed information layer 8;

[0062] 2) Full-plate aluminum plating is performed using vacuum aluminum plating technology to obtain an aluminum plating layer 9. The laser molded information layer 8 and the aluminum plating layer 9 constitute a holographic rainbow transfer layer;

[0063] 3) The holographic rainbow transfer layer is compounded with the substrate layer 11, and the PET layer is peeled off to form the substrate layer 11 with a holographic rainbow effect;

[0064] 4) applying a coating layer 2 below the plastic film layer 1;

[0065] 5) performing embossing on the coating layer 2 to form an embossed holographic information layer 3;

[0066] 6) applying a transfer coating 4 on the surface of the embossed holographic information layer 3, after which the embossed holographic information disappears;

[0067] 7) applying a polyamide layer 5 on the transfer coating layer 4;

[0068] 8) Printing is performed on the polyamide layer 5 to form a first printed layer 6, wherein the information on the first printed layer 6 includes variable information;

[0069] 9) The variable information surface is laminated with the rainbow holographic effect surface of the base material layer 11 with the rainbow holographic effect, and die-cut to form an anti-counterfeiting card with information that can be opened and verified.

[0070] In step 1), the coating amount of the transfer laser coating is 1.3g / m 2 The transfer laser aluminum coating used is BH-1001C transfer laser aluminum coating.

[0071] In step 4), the coating 2 is coated with laser aluminizing paint, and the laser aluminizing paint is FL-7104B composite laser aluminizing paint. The coating process is: 250 mesh electro-engraving roller coating, the coating amount is 0.8g / m 2 , drying temperature: 90-120-180-180-140℃, speed: 70m / min.

[0072] In step 6), the transfer coating 4 is coated with a UV coating liquid, brand 1580, purchased from Shanghai Yima Industrial Co., Ltd. The coating process is anilox roller coating, mesh size is 180 mesh, and UV light curing.

[0073] In step 7), the coating amount of the polyamide layer 5 is 3.5 g / m 2The coating process was as follows: polyamide material (TECHNOMELT PA 6239) was dissolved in isopropyl alcohol and then applied at a coating temperature of 70°C, an anilox roller mesh size of 100 mesh, a coating viscosity (coating-4 cups) of 20", and a vehicle speed of 50 m / min. After the polyamide layer 5 was applied, the T-peel strength between the transfer coating layer 4 and the embossed holographic information layer 3 was 0.0010 N / mm.

[0074] Example 2

[0075] like Figure 2 As shown, the anti-counterfeiting card with information to be peeled off includes, arranged in order from top to bottom, a plastic film layer 1, a coating layer 2, an embossed holographic information layer 3, a transfer coating layer 4, a polyamide layer 5, a first printing layer 6, a pressure-sensitive adhesive layer 7 (UV pressure-sensitive adhesive is partially applied, with one edge left uncoated to ensure that there is no random delamination when peeling off), a holographic rainbow transfer layer, a first glue layer 10, and a substrate layer 11; the holographic rainbow transfer layer includes a laser-embossed information layer 8 and an aluminized layer 9, with the laser-embossed information layer 8 located above the aluminized layer 9;

[0076] The anti-counterfeiting card can be peeled off and is divided into a peeling part and a bottom part. The peeling part is the part above the transfer coating 4 and all layers above the local uncoated part of the pressure-sensitive adhesive layer 7, and the rest of the bottom is left.

[0077] in:

[0078] The plastic film layer 1 is a 38 μm plastic film, which is a PP film.

[0079] The coating layer 2 is a colorless and transparent layer, and after molding, a molded holographic information layer 3 is formed on the surface.

[0080] The thickness of the transfer coating 4 is 0.8 microns.

[0081] The information of the first printed layer 6 includes graphics and variable information (two-dimensional code). A local covering layer 12 is provided above the plastic film layer 1 at the position corresponding to the variable information of the first printed layer 6 .

[0082] A prompt graphic layer 13 is provided above the local covering layer 12 .

[0083] A second printing layer 14 is provided below the substrate layer 11 .

[0084] The method for preparing the anti-counterfeiting card for uncovering and verifying information comprises the following specific steps:

[0085] 1) coating a transfer laser aluminized coating on a PET film and embossing the film using an embossing and printing integrated machine to obtain a laser embossed information layer 8;

[0086] 2) Full-plate aluminum plating is performed using vacuum aluminum plating technology to obtain an aluminum plating layer 9. The laser molded information layer 8 and the aluminum plating layer 9 constitute a holographic rainbow transfer layer;

[0087] 3) The holographic rainbow transfer layer is compounded with the substrate layer 11, and the PET layer is peeled off to form the substrate layer 11 with a holographic rainbow effect;

[0088] 4) applying a coating layer 2 below the plastic film layer 1;

[0089] 5) performing embossing on the coating layer 2 to form an embossed holographic information layer 3;

[0090] 6) applying a transfer coating 4 on the surface of the embossed holographic information layer 3, after which the embossed holographic information disappears;

[0091] 7) applying a polyamide layer 5 on the transfer coating layer 4;

[0092] 8) Printing is performed on the polyamide layer 5 to form a first printed layer 6, wherein the information on the first printed layer 6 includes variable information;

[0093] 9) The variable information surface is laminated with the rainbow holographic effect surface of the base material layer 11 with the rainbow holographic effect, and die-cut to form an anti-counterfeiting card with information that can be opened and verified.

[0094] The local covering layer 12, the prompt graphic layer 13 and the second printing layer 14 are prepared by a common method in the prior art, which will not be described in detail here.

[0095] In step 1), the coating amount of the transfer laser coating is 1.2g / m 2 The transfer laser aluminum coating used is BH-1001C transfer laser aluminum coating.

[0096] In step 4), the coating 2 is coated with laser aluminizing paint, and the laser aluminizing paint is FL-7104B composite laser aluminizing paint. The coating process is: 150 mesh electric engraving roller coating, the coating amount is 0.5g / m 2 , drying temperature: 90-120-180-180-140℃, speed: 70m / min.

[0097] In step 6), the transfer coating 4 is coated with a UV coating liquid, brand 1580, purchased from Shanghai Yima Industrial Co., Ltd. The coating process is anilox roller coating, mesh size is 360 mesh, and UV light curing.

[0098] In step 7), the coating amount of the polyamide layer 5 is 1.0 g / m 2The coating process was as follows: polyamide material (TECHNOMELT PA 6239) was dissolved in isopropyl alcohol and then applied. The coating temperature was 90°C, the mesh size of the anilox roller was 250 mesh, the coating viscosity (coating-4 cup) was 13", and the vehicle speed was 50 m / min. After the polyamide layer 5 was applied, the T-peel strength between the transfer coating layer 4 and the embossed holographic information layer 3 was 0.0030 N / mm.

Claims

1. A method for preparing an anti-counterfeiting card for revealing and verifying information, characterized in that: The invention comprises a plastic film layer (1), a coating layer (2), a molded holographic information layer (3), a transfer coating layer (4), a polyamide layer (5), a first printing layer (6), a pressure-sensitive adhesive layer (7), a holographic rainbow transfer layer, a first glue layer (10), and a substrate layer (11) which are arranged in sequence from top to bottom; the holographic rainbow transfer layer comprises a laser molded information layer (8) and an aluminum-plated layer (9), and the laser molded information layer (8) is located above the aluminum-plated layer (9); The anti-counterfeiting card can be peeled off and is divided into a peeling portion and a bottom portion. The peeling portion is the portion above the transfer coating (4), and the bottom portion is divided into the transfer coating (4) and the portion below the transfer coating (4). When observing the surface of the anti-counterfeiting card, it has a metallic luster holographic rainbow effect, and the hidden holographic laser effect is not visible; when peeled off, the front and back of the peeled part show the hidden transparent laser information, and the remaining part shows the hidden aluminum-plated holographic laser information; when it is put back together, the laser information is still visible and cannot be restored; The coating (2) is a transparent color layer, which is a colorless transparent color layer or a light-colored transparent color layer, and after molding, a molded holographic information layer (3) is formed on the surface; The polyamide layer (5) serves to improve the adhesion of the printed layer; the transfer coating (4) is a local coating, and the embossed holographic information not covered by the transfer coating (4) is further covered by the polyamide layer (5), thereby serving to hide the embossed holographic information; The method for preparing the anti-counterfeiting card for uncovering and verifying information comprises the following steps: 1) coating a transfer laser aluminum coating on a PET film, and performing embossing using an embossing and printing all-in-one machine to obtain a laser embossed information layer (8); 2) using vacuum aluminum plating technology to perform full-plate aluminum plating to obtain an aluminum plating layer (9), and the laser molded information layer (8) and the aluminum plating layer (9) constitute a holographic rainbow transfer layer; 3) the holographic rainbow transfer layer is laminated with the substrate layer (11), and the PET layer is peeled off to form a substrate layer (11) with a holographic rainbow effect; 4) applying a coating layer (2) below the plastic film layer (1); 5) performing embossing on the coating (2) to form an embossed holographic information layer (3), wherein the embossing is performed using an embossed information plate, and point light source encryption platemaking technology is used when preparing the embossed information plate; 6) applying a transfer coating (4) on the surface of the embossed holographic information layer (3), wherein the embossed holographic information disappears after the coating; 7) applying a polyamide layer (5) on the transfer coating (4); 8) Printing is performed on the polyamide layer (5) to form a first printing layer (6), wherein information on the first printing layer (6) includes variable information; 9) Compounding the variable information surface with the rainbow holographic effect surface of the base material layer (11) with the rainbow holographic effect, and die-cutting the surface to form an anti-counterfeiting card with information to be opened and verified; In step 4), the coating (2) is coated with laser aluminum coating, and the coating process is: 150-250 mesh electro-engraving roller coating, and the coating amount is 0.5-0.8g / m 2 , drying temperature: 90-120-180-180-140 ℃, speed: 70m / min; In step 6), the transfer coating is applied using a UV coating liquid; the coating process is an anilox roller coating with a mesh size of 180-360 mesh and UV light curing; In step 7), the coating amount of the polyamide layer (5) is 1.0-3.5 g / m 2 The coating process is as follows: the polyamide material is dissolved in isopropyl alcohol and then coated, the coating temperature is 70-90°C, the mesh number of the anilox roller is 100-250 mesh, the coating-4 cup viscosity is 13-20", and the vehicle speed is 50m / min; after the polyamide layer (5) is coated, the T-peel strength between the transfer coating (4) and the molded holographic information layer (3) is: 0.0010-0.0030N / mm; In step 9), the variable information surface and the rainbow holographic effect surface of the base material layer (11) with rainbow holographic effect are compounded together by using pressure-sensitive adhesive, and the pressure-sensitive adhesive is applied in a local coating manner.

2. The method for preparing an anti-counterfeiting card with uncovering verification information according to claim 1, characterized in that: The plastic film layer (1) is a 12-38 μm plastic film, which is one of PP film, PET film or holographic washed aluminum film.

3. The method for preparing an anti-counterfeiting card with uncovering verification information according to claim 1, characterized in that: The thickness of the transfer coating (4) is 0.8-3 microns.

4. The method for preparing an anti-counterfeiting card with uncovering verification information according to claim 1, characterized in that: The information of the first printing layer (6) includes graphics and variable information, and a local covering layer (12) is provided above the plastic film layer (1) corresponding to the position of the variable information of the first printing layer (6); and a second printing layer (14) is provided below the substrate layer (11).

5. The method for preparing an anti-counterfeiting card with uncovering verification information according to claim 4, characterized in that: A prompt graphic layer (13) is provided above the local covering layer (12).

Images