Uncovering type anti-transfer anti-counterfeit label and preparation method thereof

Abstract

The invention relates to an anti-counterfeit label, in particular to an uncovering type anti-transfer anti-counterfeit label and a preparation method thereof. The invention relates to an uncovering type anti-transfer anti-counterfeit label. Comprising a first thermal shrinkage film layer, a first pressure-sensitive adhesive layer, a first printing layer, a second thermal shrinkage film layer, a second pressure-sensitive adhesive layer, an aluminum washing film layer, a third glue layer, a laser hiding layer, a local release coating, a second printing layer, a fourth glue layer, a transfer holographic rainbow aluminum plating layer, a fifth glue layer, a base material layer, a third pressure-sensitive adhesive layer and a release paper layer which are sequentially arranged from top to bottom. The uncovering type anti-transfer anti-counterfeit label is high in anti-transfer performance, easy to open during use, high in anti-counterfeit grade, easy to identify and not prone to upwarp when being pasted; the preparation method of the label is scientific, reasonable, simple and easy to implement.

Description

Technical Field

[0001] The invention relates to an anti-counterfeiting mark, in particular to a peel-off anti-transfer anti-counterfeiting label and a preparation method thereof. Background Art

[0002] With the development of society, product anti-counterfeiting is becoming more and more important. Customers not only require each label to be different, but also require the aesthetics of the label. The surface properties of the customer's objects are varied, among which various shapes of personalized objects are widely used. At present, in the field of anti-counterfeiting labels, peel-off anti-counterfeiting labels are widely used and have high anti-counterfeiting strength. However, they have the following problems during use, which brings great inconvenience to customers.

[0003] 1) When the label is attached to a curved surface or sealed at a right angle, the label has poor flatness and excessive tension, which can easily cause warping.

[0004] 2) Although the label can be peeled off and destroyed, the viscosity of the pressure-sensitive adhesive decreases after the label is heated, and the label can be transferred and used again.

[0005] 3) Many peel-off labels have too large a breaking force, which may cause problems in the market such as labels being difficult to peel off or hidden variable information being incomplete after peeling off, affecting consumers' reading.

[0006] How to prepare a peel-off anti-transfer anti-counterfeiting label with hidden information that has good anti-transfer performance and can be completely peeled off is a problem that needs to be solved urgently at this stage.

[0007] Chinese patent CN208027644U discloses a multi-layer adhesive-free and adhesive combined special label, including a release paper and a label body adhered to the release paper, wherein the label body includes a transparent film, an adhesive-free folding inner core and a bottom layer from the outside to the inside; the transparent film is attached to the upper surface of the adhesive-free folding inner core, and the two ends of the transparent film extending out of the inner core are adhered to the bottom layer, and the surface of the bottom layer away from the adhesive-free folding inner core is coated with an adhesive layer, and the bottom layer is attached to the release paper through the adhesive layer; the width of the tail of the label body and the peeling part of the label body is adjusted according to the number of layers of the adhesive-free folding inner core, so that the label will not curl up when attached to a curved surface, and the peeling part of the label body is easy to peel and stick, which is more convenient to use.

[0008] However, although this label solves the problem of the label warping on the curved surface, it is necessary to strictly control the width of the tail of the label body and the peeling portion of the label body, which is not conducive to industrial promotion. Summary of the invention

[0009] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a peel-off anti-transfer anti-counterfeiting label with strong anti-transfer performance, easy to open when in use, high anti-counterfeiting level, easy to identify, and not prone to warping when attached; the present invention also provides a preparation method thereof, which is scientific, reasonable, simple and easy to implement.

[0010] The peel-off anti-transfer anti-counterfeiting label of the present invention comprises a first heat shrinkable film layer, a first pressure-sensitive adhesive layer, a first printing layer, a second heat shrinkable film layer, a second pressure-sensitive adhesive layer, an aluminum-washed film layer, a third glue layer, a laser stealth layer, a local release coating, a second printing layer, a fourth glue layer, a transfer holographic rainbow aluminum-plated layer, a fifth glue layer, a substrate layer, a third pressure-sensitive adhesive layer and a release paper layer, which are arranged in sequence from top to bottom.

[0011] in:

[0012] The anti-counterfeiting mark can be peeled off and is divided into a peeling part and a bottom part. The peeling part is composed of the first heat shrinkable film layer, the first pressure-sensitive adhesive layer, the first printing layer, the second heat shrinkable film layer, the second pressure-sensitive adhesive layer, the aluminum-washing film layer, the third glue layer, the laser stealth layer, and the second printing layer from top to bottom; the bottom part is composed of the local release coating, the second printing layer, the fourth glue layer, the transfer holographic rainbow aluminum-plated layer, the fifth glue layer, the substrate layer, the third pressure-sensitive adhesive layer, and the release paper layer from top to bottom.

[0013] The first heat shrinkable film layer and the second heat shrinkable film layer are one of PP, PE, PVC, and POF, and have a thickness of 10-50 μm, preferably 10-24 μm.

[0014] The first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer are one of hot-melt pressure-sensitive adhesive, oil-based pressure-sensitive adhesive, water-based pressure-sensitive adhesive and UV pressure-sensitive adhesive, with a thickness of 3-15 μm. Preferably, the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer are both UV pressure-sensitive adhesive.

[0015] The third glue layer, the fourth glue layer and the fifth glue layer are pressure-sensitive adhesive or non-pressure-sensitive adhesive, such as commercially available two-component pressure-sensitive adhesive.

[0016] The first printing layer and the second printing layer contain variable information, such as a one-dimensional barcode, a two-dimensional code, a variable digital code, etc.

[0017] The aluminum-washed film layer includes an unwashed aluminum area, and the unwashed aluminum area covers the variable information on the second printing layer, thereby playing a role in covering the variable information.

[0018] The aluminum-washed film layer includes a holographic white area, and the holographic white area corresponds to the variable information position of the first printing layer. When the variable information of the first printing layer is a two-dimensional code or a one-dimensional barcode, the reading level can be effectively improved.

[0019] The substrate layer can be a substrate such as fragile paper, plastic film, coated paper, etc. The self-adhesive layer is composed of the substrate layer, the third pressure-sensitive adhesive layer and the release paper layer. The substrate layer can be die-cut to improve the anti-transfer effect. Preferably, the substrate layer is fragile paper.

[0020] The method for preparing the peel-off anti-transfer anti-counterfeiting label comprises the following steps:

[0021] 1) Use a composite glue coating machine to apply glue on the plastic film surface of the laser hidden layer, and pass it through an oven to composite it with the washed aluminum film layer. The unwinding tension of the washed aluminum film layer is 150-250N, and the unwinding tension of the laser hidden layer is 130-150% of the unwinding tension of the washed aluminum film layer. The purpose is to make the film surface bend towards the laser hidden layer after composite;

[0022] If the unwinding tension of the aluminum film layer is too low, it will cause the aluminum film to bend and curl, causing wrinkles on the film. If it is too high, the aluminum film will be stretched severely, causing curling and making it impossible to laminate. The unwinding tension of the laser hidden layer is 130-150% of the unwinding tension of the aluminum film layer. If the tension is too low, the film surface can be flat or bend toward the aluminum film layer after lamination, which will cause the film to bend toward the aluminum film layer in the post-processing process, causing the label to bend toward the back of the object being labeled, which is easy to cause warping and is not suitable for bending labeling. If the unwinding tension of the laser hidden layer is too high, it will cause curling after lamination, making subsequent processes difficult to process.

[0023] 2) The aluminum-washed film layer of the composite film obtained in step 1) is laminated with the second heat shrinkable film layer using glue. During the lamination, the tension of the composite film is set to 150-180N, and the tension of the second heat shrinkable film layer is set to 6-10% of the tension of the composite film; the purpose is to keep the composite film surface still bent toward the laser stealth layer;

[0024] The tension of the composite film is set to 150-180N. If the tension is too low, the aluminum-washed film will bend and curl, causing wrinkles on the film. If it is too high, the film will be stretched severely, causing curling and failure to laminate. The unwinding tension of the second heat shrink film layer is 6-10% of the tension of the composite film. If the tension is too low, the heat shrink film cannot be straightened and is prone to wrinkling during lamination. If the tension is too high, such as 15%, although it still bends toward the composite film surface after lamination in this process, after the post-processing, it will cause the label to bend toward the heat shrink film surface, and the label will easily warp, which is not suitable for bending labeling. If the tension continues to increase, such as more than 30%, the heat shrink film will be stretched and deformed excessively and cannot be laminated.

[0025] 3) Position printing on the second heat shrinkable film layer to form the first printing layer, and print using a digital printer. When applying the digital coating liquid, the temperature is set to 60-65°C; after the heat shrinkable film is heated, the surface tension of the heat shrinkable film increases, making the composite film flat during printing;

[0026] 4) Compounding the first pressure-sensitive adhesive layer and the first heat shrinkable film layer on the first printed layer;

[0027] 5) locally applying a release coating on the laser stealth layer to form a local release coating;

[0028] 6) Printing is performed on the partial release coating surface to form a second printing layer, and a digital printing machine is used for printing. When the digital coating liquid is applied, the temperature is set to 60-65°C; after the heat shrink film is heated, the surface tension of the heat shrink film increases, so that the composite film is flat when printing;

[0029] 7) Compounding the second printing layer and the aluminum-plated layer of the transfer holographic rainbow aluminum-plated layer material together by using glue;

[0030] 8) peeling off the PET film of the transferred holographic rainbow aluminized layer material in step 7);

[0031] 9) Die-cutting the adhesive substrate layer to form an anti-transfer pattern knife, compounding the transfer holographic rainbow aluminum-plated layer in step 8) with the substrate layer, setting the oven temperature to 30-50° C., and die-cutting to form a peel-off anti-transfer anti-counterfeiting label;

[0032] Wherein, the self-adhesive adhesive comprises a fifth glue layer, a substrate layer, a pressure-sensitive adhesive layer and a release paper layer.

[0033] Before preparing the logo, the following basic raw materials need to be prepared.

[0034] The preparation process of the washed aluminum film layer is as follows:

[0035] A molded coating is applied to the plastic film layer to form a molded coating layer. After the coating is completed, a molded holographic plate is prepared. The molded holographic plate is used to mold to form a molded information layer. Local water-based aluminum-washing ink is printed to obtain a local positioning aluminum-washing ink layer. Aluminum is plated in a vacuum aluminum plating machine. Then, a fine aluminum-washing process is performed to wash away the local positioning aluminum-washing ink layer and the corresponding aluminum layer. The remaining aluminum layer is the positioning aluminum-washing layer.

[0036] Preparation process of embossed holographic plate: Use laser etching equipment to etch on the photoresist plate, where the holographic white area adopts a precision of 200nm, a photolithography speed of 1 square centimeter / hour, and an exposure time of 50ms to make a holographic embossed plate;

[0037] The preparation process of the laser stealth layer is as follows:

[0038] A coating is applied under the plastic film layer, and molded on the coating to form a molded holographic information layer. After the molded holographic information layer of the laser stealth layer is coated with a local release coating, laser information hiding can be achieved. When the laser stealth layer is separated from the local release coating, the molded holographic information can be presented. The local release coating plays the role of hiding the information of the laser stealth layer. At the same time, the peel-off mark is separated from the laser stealth layer and the local release coating, and the laser secret information is presented on both the laser stealth layer and the release coating. After re-combination, the laser secret information cannot disappear, which plays the role of preventing transfer and secondary use and a warning role.

[0039] The preparation process of the transfer holographic rainbow aluminum coating is as follows:

[0040] A. Apply transfer laser aluminum coating on the PET film, and use a embossing printing machine to emboss the film to obtain a laser embossed information layer;

[0041] B. Use vacuum aluminizing technology to perform full-plate aluminizing to obtain an aluminizing layer, and then obtain a transfer holographic rainbow embossed aluminizing film material, wherein the transfer laser aluminizing coating layer, the laser embossed information layer and the aluminizing layer constitute the transfer holographic rainbow aluminizing layer, and the transfer laser aluminizing coating layer can be peeled off from the PET film.

[0042] In summary, the beneficial effects of the present invention are as follows:

[0043] 1. Strong anti-transfer performance: multiple measures are taken to increase the difficulty of transfer for secondary use.

[0044] (1) The bottom substrate is processed with a die-cutting knife. When the label substrate is peeled off, it can be peeled off and damaged from the die to prevent the label from transferring. At the same time, after the label substrate is damaged, it is easy to cause the peeling layer to separate from the die of the substrate, ensuring that the bottom layer is easy to peel off from the surface layer.

[0045] (2) The partial unveiling process is combined with the laser stealth process. The logo can be destroyed in layers, while the hidden laser information is revealed, which serves as a warning.

[0046] (3) Multiple heat shrink film process: Under the action of hot air, the heat shrink film and the first printing layer shrink and deform due to heat, resulting in damage to the logo pattern and structure, making it impossible to use it a second time.

[0047] 2. The peel-off label has the problem that the release layer is difficult to break, which easily leads to the problem that the hidden variable information cannot be peeled off for viewing or is peeled off incompletely. The present invention adopts the bottom substrate die-cutting process, which can make the release layer at the place where the label substrate is damaged by the die-cutting, and the substrate is left at the bottom position to ensure that the hidden information inside the label is fully displayed.

[0048] 3. A holographic white area is set on the washed aluminum film layer, and the variable information on the first printing layer can be printed on the holographic white area. When the variable information of the first printing layer is a two-dimensional code or a one-dimensional barcode, the reading level can be effectively improved. After testing, the level can reach A, which is much higher than the industry standard requirement of D and above, meeting the needs of industrial production.

[0049] 4. The substrate adopts die-cutting technology, such as checkered pattern knife, which can make the entire logo easy to bend and the label is not easy to warp. It is especially suitable for 90° sealing labeling and curved surface labeling. At the same time, it solves the problem that the hidden information cannot be fully revealed when the bent sealing label is opened.

[0050] 5. Transfer holographic rainbow die-cast aluminum gives the logo a better aesthetics.

[0051] 6. The preparation method is scientific, reasonable, simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a structural schematic diagram of the peel-off anti-transfer anti-counterfeiting label of the present invention;

[0053] Figure 2 The surface effect, holographic effect, effect of irrecoverable peeling layer (i.e. peeled portion) and peeling back effect of the peeling anti-transfer anti-counterfeiting label prepared in Example 1 of the present invention are shown;

[0054] Figure 3 The surface effect, holographic effect, effect of irrecoverable peeling layer and bottom leaving effect of the peeling anti-transfer anti-counterfeiting label prepared in Example 2 of the present invention are shown;

[0055] Figure 4 The surface effect, holographic effect, effect of irrecoverable peeling layer and bottom leaving effect of the peeling anti-transfer anti-counterfeiting label prepared in Example 3 of the present invention are shown;

[0056] In the figure: 1. First heat shrink film layer; 2. First pressure-sensitive adhesive layer; 3. First printing layer; 4. Second heat shrink film layer; 5. Second pressure-sensitive adhesive layer; 6. Aluminum-washing film layer; 7. Third glue layer; 8. Laser stealth layer; 9. Local release coating; 10. Second printing layer; 11. Fourth glue layer; 12. Transfer holographic rainbow aluminum-plated layer; 13. Fifth glue layer; 14. Base material layer; 15. Third pressure-sensitive adhesive layer; 16. Release paper layer. DETAILED DESCRIPTION

[0057] The present invention will be further described below in conjunction with the embodiments.

[0058] Example 1

[0059] The peel-off anti-transfer anti-counterfeiting label includes a first heat shrinkable film layer 1, a first pressure-sensitive adhesive layer 2, a first printing layer 3, a second heat shrinkable film layer 4, a second pressure-sensitive adhesive layer 5, an aluminum-washed film layer 6, a third glue layer 7, a laser stealth layer 8, a local release coating 9, a second printing layer 10, a fourth glue layer 11, a transfer holographic rainbow aluminum-plated layer 12, a fifth glue layer 13, a substrate layer 14, a third pressure-sensitive adhesive layer 15 and a release paper layer 16, which are arranged in sequence from top to bottom. The anti-counterfeiting mark can be peeled off and is divided into a peeling part and a bottom part. The peeling part is, from top to bottom, the first heat shrinkable film layer 1, the first pressure-sensitive adhesive layer 2, the first printing layer 3, the second heat shrinkable film layer 4, the second pressure-sensitive adhesive layer 5, the aluminum-washing film layer 6, the third glue layer 7, the laser stealth layer 8, and the second printing layer 10; the bottom part is, from top to bottom, the local release coating 9, the second printing layer 10, the fourth glue layer 11, the transfer holographic rainbow aluminum-plated layer 12, the fifth glue layer 13, the substrate layer 14, the third pressure-sensitive adhesive layer 15, and the release paper layer 16.

[0060] The first heat shrinkable film layer 1 and the second heat shrinkable film layer 4 are made of PP film with a thickness of 20 μm.

[0061] The first pressure-sensitive adhesive layer 2 and the second pressure-sensitive adhesive layer 5 are UV pressure-sensitive adhesives with a thickness of 10 μm.

[0062] The first printing layer 3 and the second printing layer 10 contain variable information. The variable information of the first printing layer 3 is a two-dimensional code; the information of the second printing layer 10 is a variable digital number. The washed aluminum film layer 6 includes an unwashed aluminum area, and the unwashed aluminum area covers the variable digital number on the second printing layer 10. The washed aluminum film layer 6 includes a holographic white area, which corresponds to the position of the two-dimensional code of the first printing layer 3, and can effectively improve the reading level of the two-dimensional code.

[0063] The method for preparing the peel-off anti-transfer anti-counterfeiting label comprises the following steps:

[0064] 1) Use a composite glue coating machine to apply glue on the plastic film surface of the laser hidden layer 8, and pass it through an oven to composite it with the washed aluminum film layer 6 to obtain a composite film; wherein, the unwinding tension of the washed aluminum film layer 6 is 200N, and the unwinding tension of the laser hidden layer 8 is 140% of the unwinding tension of the washed aluminum film layer 6; the purpose is to make the composite film surface bend towards the laser hidden layer 8;

[0065] 2) The aluminum-washed film layer 6 of the composite film obtained in step 1 is laminated with the second heat shrinkable film layer 4 using glue. During the lamination, the tension of the composite film is set to 165N, and the tension of the second heat shrinkable film layer 4 is set to 8% of the tension of the composite film; the purpose is to keep the film surface after lamination still bent toward the laser stealth layer 8;

[0066] 3) Positioning and printing on the second heat shrinkable film layer 4 to form a first printing layer 3; using a digital printing machine for printing, the temperature is set to 62° C. when applying the digital coating liquid; after the heat shrinkable film is heated, the surface tension of the heat shrinkable film increases, so that the composite film is flat during printing;

[0067] 4) Compounding the first pressure-sensitive adhesive layer 2 and the first heat shrinkable film layer 1 on the first printed layer 3;

[0068] 5) partially coating the laser stealth layer 8 with a release coating to form a local release coating 9;

[0069] 6) Printing is performed on the partial release coating 9 to form a second printing layer 10; a digital printing machine is used for printing, and the temperature is set to 62° C. when the digital coating liquid is applied; after the heat shrink film is heated, the surface tension of the heat shrink film increases, so that the composite film is flat during printing;

[0070] 7) Compounding the second printed layer 10 and the aluminum-plated layer of the transfer holographic rainbow aluminum-plated layer 12 material together using glue;

[0071] 8) peeling off the PET film of the transferred holographic rainbow aluminized layer 12 in step 7;

[0072] 9) Die-cut the substrate layer 14 of the self-adhesive label to form an anti-transfer pattern, compound the transfer holographic rainbow aluminum-plated layer 12 of step 8 with the substrate layer 14, set the oven temperature to 40°C, and die-cut to form a peel-off anti-transfer anti-counterfeiting label; wherein the self-adhesive label includes a fifth glue layer 13, a substrate layer 14, a third pressure-sensitive adhesive layer 15 and a release paper layer 16.

[0073] The preparation process of the washed aluminum film layer 6 is as follows:

[0074] A molding coating is coated on the plastic film layer to form a molding coating layer. After the coating is completed, a molded holographic plate is prepared. The molded holographic plate is used to mold to form a molded information layer. Local water-based aluminum-washing ink is printed to obtain a local positioning aluminum-washing ink layer. Aluminum is plated in a vacuum aluminum plating machine, and then a fine aluminum washing process is performed to wash away the local positioning aluminum-washing ink layer and the corresponding aluminum layer. The remaining aluminum layer is the positioning aluminum-washing layer. The preparation process of the molded holographic plate: a laser etching device is used to etch on a photoresist plate, wherein the holographic white area adopts a precision of 200nm, a photolithography speed of 1 square centimeter / hour, and an exposure time of 50ms to form a holographic molded plate.

[0075] The preparation process of the laser stealth layer 8 is as follows:

[0076] A coating layer is applied below the plastic film layer, and embossing is performed on the coating layer to form an embossed holographic information layer.

[0077] The preparation process of the transfer holographic rainbow aluminum coating 12 is as follows:

[0078] A. Apply transfer laser aluminum coating on the PET film, and use a embossing printing machine to emboss the film to obtain a laser embossed information layer;

[0079] B. Full-plate aluminum plating is performed using vacuum aluminum plating technology to obtain an aluminum plating layer, and thus a transfer holographic rainbow embossed aluminum plating film material can be obtained, wherein the transfer laser aluminum plating coating layer, the laser embossed information layer and the aluminum plating layer constitute the transfer holographic rainbow aluminum plating layer 12, and the transfer laser aluminum plating coating layer can be peeled off from the PET film.

[0080] Example 2

[0081] The difference between the peel-off anti-transfer anti-counterfeiting label and the embodiment 1 is that the washed aluminum film layer 6 is not provided with a holographic white area.

[0082] The difference between the preparation methods is that the preparation process of the washed aluminum film layer 6 is as follows:

[0083] A molded coating is coated on the plastic film layer to form a molded coating layer. After the coating is completed, a molded holographic plate is prepared. The molded holographic plate is used to mold to form a molded information layer. Local water-based aluminum-washing ink is printed to obtain a local positioning aluminum-washing ink layer. Aluminum is plated in a vacuum aluminum plating machine, and then a fine aluminum washing process is performed to wash away the local positioning aluminum-washing ink layer and the corresponding aluminum layer. The remaining aluminum layer is the positioning aluminum-washing layer. When preparing the molded plate, the area corresponding to the holographic white area in Example 1 is no longer subjected to photolithography processing, and the aluminum-plated layer in this area is not washed away.

[0084] Example 3

[0085] The difference between the peel-off anti-transfer anti-counterfeiting label and the embodiment 1 is that the washed aluminum film layer 6 is not provided with an unwashed aluminum area and a holographic white area.

[0086] The difference between the preparation methods is that the preparation process of the washed aluminum film layer 6 is as follows:

[0087] A molding coating is coated on the plastic film layer to form a molding coating layer. After the coating is completed, a molded holographic plate is prepared. The molded holographic plate is used to mold to form a molded information layer. Local water-based aluminum-washing ink is printed to obtain a local positioning aluminum-washing ink layer. Aluminum is plated in a vacuum aluminum plating machine. Then, a fine aluminum washing process is performed to wash away the local positioning aluminum-washing ink layer and the corresponding aluminum layer. The remaining aluminum layer is the positioning aluminum-washing layer. When preparing the molded plate, the area corresponding to the holographic white area in Example 1 is no longer subjected to photolithography processing. When the positioning aluminum washing is performed, the aluminum-plated layer in the area corresponding to the holographic white area in Example 1 is washed away.

[0088] 500 labels prepared in Examples 1-3 were respectively taken to test the QR code level. The test method was: using a barcode level tester LVS-9510, the QR code to be tested on the label was placed in the test area of ​​the barcode level tester for testing. The test results are shown in Table 1.

[0089] Table 1. Test results of QR code level

[0090]

[0091] According to GB / T 23704-2017 "Inspection of Printing Quality of Two-Dimensional Barcode Symbols", Grade F is a failure. The two-dimensional code grade tests in the embodiments are all above Grade D, which meets the national standard requirement of Grade D. However, with the requirements of industrial labeling, collection and reading, the two-dimensional code grade needs to reach Grade B or above to meet the requirements of high-speed collection and reading. In Example 1, a holographic white aluminum plating process is used at the corresponding position below the two-dimensional code. The barcode grade reaches Grade B or above, and the test data are all higher than 3.0, and Grade A accounts for more than 99%.

[0092] The present invention is not limited to the above-described embodiments. The above-described specific embodiments are merely illustrative and not restrictive. Without departing from the scope of protection of the claims of the present invention, those skilled in the art may also make many forms of changes under the guidance of the present invention, which are within the scope of protection of the present invention.

Claims

1. A peel-off anti-transfer anti-counterfeiting label, characterized by: The invention comprises, arranged in order from top to bottom, a first heat shrinkable film layer (1), a first pressure-sensitive adhesive layer (2), a first printing layer (3), a second heat shrinkable film layer (4), a second pressure-sensitive adhesive layer (5), an aluminum-washing film layer (6), a third glue layer (7), a laser stealth layer (8), a local release coating (9), a second printing layer (10), a fourth glue layer (11), a transfer holographic rainbow aluminum-plated layer (12), a fifth glue layer (13), a substrate layer (14), a third pressure-sensitive adhesive layer (15) and a release paper layer (16).

2. The peel-off anti-transfer anti-counterfeiting label according to claim 1, characterized in that: The anti-counterfeiting mark can be peeled off and is divided into a peeling part and a bottom part. The peeling part is composed of, from top to bottom, a first heat shrinkable film layer (1), a first pressure-sensitive adhesive layer (2), a first printing layer (3), a second heat shrinkable film layer (4), a second pressure-sensitive adhesive layer (5), an aluminum-washing film layer (6), a third glue layer (7), a laser stealth layer (8), and a second printing layer (10); and the bottom part is composed of, from top to bottom, a local release coating (9), a second printing layer (10), a fourth glue layer (11), a transfer holographic rainbow aluminum-plated layer (12), a fifth glue layer (13), a substrate layer (14), a third pressure-sensitive adhesive layer (15), and a release paper layer (16).

3. The peel-off anti-transfer anti-counterfeiting label according to claim 1, characterized in that: The first heat shrinkable film layer (1) and the second heat shrinkable film layer (4) are made of one of PP, PE, PVC and POF, and have a thickness of 10-50 μm.

4. The peel-off anti-transfer anti-counterfeiting label according to claim 1, characterized in that: The first pressure-sensitive adhesive layer (2) and the second pressure-sensitive adhesive layer (5) are one of hot-melt pressure-sensitive adhesive, oil-based pressure-sensitive adhesive, water-based pressure-sensitive adhesive and UV pressure-sensitive adhesive, and have a thickness of 3-15 μm.

5. The peel-off anti-transfer anti-counterfeiting label according to claim 1, characterized in that: The first printed layer (3) and the second printed layer (10) contain variable information.

6. The peel-off anti-transfer anti-counterfeiting label according to claim 5, characterized in that: The aluminum-washed film layer (6) includes an unwashed aluminum area, and the unwashed aluminum area covers the variable information on the second printing layer (10).

7. The peel-off anti-transfer anti-counterfeiting label according to claim 5, characterized in that: The aluminum-washed film layer (6) comprises a holographic white area, and the holographic white area corresponds to the variable information position of the first printing layer (3).

8. A method for preparing the peel-off anti-transfer anti-counterfeiting label according to any one of claims 1 to 7, characterized in that: The following steps are involved: 1) Using a composite glue coating machine, glue is applied on the plastic film surface of the laser hidden layer (8), and the glue is compounded with the washed aluminum film layer (6) through an oven to obtain a composite film; wherein the unwinding tension of the washed aluminum film layer (6) is 150-250N, and the unwinding tension of the laser hidden layer (8) is 130-150% of the unwinding tension of the washed aluminum film layer (6); 2) The aluminum-washed film layer (6) of the composite film obtained in step 1) is laminated with the second heat shrinkable film layer (4) using glue. During the lamination, the tension of the composite film is set to 150-180N, and the tension of the second heat shrinkable film layer (4) is set to 6-10% of the tension of the composite film; 3) Positioning and printing on the second heat shrinkable film layer (4) to form a first printing layer (3); using a digital printing machine for printing, and setting the temperature to 60-65° C. when applying the digital coating liquid; 4) Laminating the first pressure-sensitive adhesive layer (2) and the first heat shrinkable film layer (1) on the first printed layer (3); 5) locally coating the laser stealth layer (8) with a release coating to form a local release coating (9); 6) Overprinting on the partial release coating (9) to form a second printing layer (10); printing is performed using a digital printing machine, and the temperature is set to 60-65° C. when applying the digital coating liquid; 7) Compounding the second printed layer (10) and the aluminum-plated layer of the transferred holographic rainbow aluminum-plated layer (12) material together using glue; 8) peeling off the PET film of the transferred holographic rainbow aluminized layer (12) in step 7); 9) die-cutting the adhesive substrate layer (14) to form an anti-transfer pattern knife, compounding the transfer holographic rainbow aluminum-plated layer (12) of step 8) with the substrate layer (14), setting the oven temperature to 30-50° C., and die-cutting to form a peel-off anti-transfer anti-counterfeiting label; The self-adhesive adhesive comprises a fifth glue layer (13), a substrate layer (14), a third pressure-sensitive adhesive layer (15) and a release paper layer (16).

9. The method for preparing the peel-off anti-transfer anti-counterfeiting label according to claim 8, characterized in that: The preparation process of the aluminum-washing film layer (6) is as follows: A molded coating is applied to the plastic film layer to form a molded coating layer. After the coating is completed, a molded holographic plate is prepared. The molded holographic plate is used to mold to form a molded information layer. Local water-based aluminum-washing ink is printed to obtain a local positioning aluminum-washing ink layer. Aluminum is plated in a vacuum aluminum plating machine. Then, a fine aluminum-washing process is performed to wash away the local positioning aluminum-washing ink layer and the corresponding aluminum layer. The remaining aluminum layer is the positioning aluminum-washing layer. Preparation process of embossed holographic plate: Use laser etching equipment to etch on the photoresist plate, where the holographic white area adopts a precision of 200nm, a photolithography speed of 1 square centimeter / hour, and an exposure time of 50ms to make a holographic embossed plate; The preparation process of the laser stealth layer (8) is as follows: A coating layer is applied below the plastic film layer, and embossing is performed on the coating layer to form an embossed holographic information layer.

10. The method for preparing the peel-off anti-transfer anti-counterfeiting label according to claim 8, characterized in that: The preparation process of the transfer holographic rainbow aluminum coating (12) is as follows: A. Apply transfer laser aluminum coating on the PET film, and use a embossing printing machine to emboss the film to obtain a laser embossed information layer; B. Full-plate aluminum plating is performed using vacuum aluminum plating technology to obtain an aluminum plating layer, thereby obtaining a transfer holographic rainbow embossed aluminum plating film material, wherein the transfer laser aluminum plating coating layer, the laser embossed information layer and the aluminum plating layer constitute a transfer holographic rainbow aluminum plating layer (12), and the transfer laser aluminum plating coating layer can be peeled off from the PET film.

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