Double-code uncovering type sealing anti-counterfeiting mark

Abstract

The utility model relates to an anti-counterfeiting mark, in particular to a double-code uncovering type sealing anti-counterfeiting mark. The double-code uncovering type sealing anti-counterfeiting mark comprises a first printing layer, a thermal shrinkage film layer, a first pressure-sensitive adhesive layer, an aluminum washing film layer, a first glue layer, a laser hiding layer, a local release coating, a second printing layer, a second glue layer, a base material layer, a second pressure-sensitive adhesive layer and a release paper layer which are sequentially arranged from top to bottom. The double-code uncovering type sealing anti-counterfeiting mark is strong in anti-transfer performance, easy to open when in use, high in anti-counterfeiting grade, easy to identify, and not easy to upwarp when being pasted.

Description

Technical Field

[0001] The utility model relates to an anti-counterfeiting mark, in particular to a double-code uncovering sealing anti-counterfeiting mark. Background Art

[0002] With the development of modern society, product anti-counterfeiting is becoming increasingly important. Customers not only require each label to be unique but also aesthetically pleasing. The surface properties of the objects being labeled vary, and personalized shapes are widely used. Currently, peel-off anti-counterfeiting labels are widely used in the field of anti-counterfeiting identification and offer high security. However, they present the following issues during use, causing significant 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 the labels to be difficult to peel off or the hidden variable information to be incomplete, affecting consumers' reading ability.

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

[0007] Chinese patent CN208027644U discloses a multi-layer adhesive-free and adhesive combination 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, 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 are adjusted according to the number of layers of the adhesive-free folding inner core, so that the label will not warp when attached to a curved surface, and the peeling part of the label body is easy to peel and stick, making it more convenient to use.

[0008] However, although this label solves the problem of the label warping on a 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. Utility Model Content

[0009] In view of the shortcomings of the existing technology, the purpose of the utility model is to provide a double-code peel-off sealing anti-counterfeiting label with strong anti-transfer performance, easy to open when used, high anti-counterfeiting level, easy to identify, and not easy to curl up when attached.

[0010] The dual-code peel-off sealing anti-counterfeiting label described in the present invention includes a first printing layer, a heat shrinkable film layer, a first pressure-sensitive adhesive layer, an aluminum-washed film layer, a first glue layer, a laser stealth layer, a local release coating, a second printing layer, a second glue layer, a substrate layer, a second 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 printing layer, heat shrink film layer, first pressure-sensitive adhesive layer, aluminum-washing film layer, first glue layer, laser stealth layer, and second printing layer from top to bottom; the bottom part is composed of a local release coating, a second printing layer, a second glue layer, a substrate layer, a second pressure-sensitive adhesive layer, and a release paper layer from top to bottom.

[0013] The heat shrinkable film layer is one of PP, PE, PVC, and POF, and has a thickness of 10-50 μm, preferably 10-24 μm.

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

[0015] The first glue layer, the second glue layer, and the third glue layer are pressure-sensitive adhesives or non-pressure-sensitive adhesives, such as commercially available two-component pressure-sensitive adhesives.

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

[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 the role of covering the variable information.

[0018] The aluminum-washed film layer includes a holographic white area, which corresponds to the position of the variable information on the first printed layer. When the variable information on the first printed 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 second 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] A holographic coating layer and a third glue layer are arranged between the second glue layer and the base material layer.

[0021] Preferably, the method for preparing the dual-code peel-off sealing anti-counterfeiting mark comprises the following steps:

[0022] 1) Use a composite glue coating machine to apply glue on the plastic film surface of the laser hidden layer, and then pass it through an oven to laminate 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 lamination;

[0023] If the unwinding tension of the aluminum-wash film layer is too low, it will cause the film to bend and curl, resulting in wrinkling of the lamination. If it is too high, the aluminum-wash film will be severely stretched, causing curling and preventing lamination. The unwinding tension of the laser covert layer should be 130-150% of the unwinding tension of the aluminum-wash film layer. If the tension is too low, the film surface may be flat after lamination or bend towards the aluminum-wash film layer. During post-processing, this will cause the film to bend towards the aluminum-wash film layer, causing the label to bend towards the back of the adhered object, which can easily cause warping and make it unsuitable for bending labeling. If the unwinding tension of the laser covert layer is too high, it will cause curling after lamination, making subsequent processing difficult.

[0024] 2) Laminating the aluminum-washed film layer of the composite film obtained in step 1) with the heat shrink film layer using glue. During lamination, the tension of the composite film is set to 150-180N, and the tension of the heat shrink film layer is set to 6-10% of the tension of the composite film. The purpose is to ensure that the composite film surface is still curved toward the laser stealth layer.

[0025] The laminating film tension is set at 150-180N. Too low a tension will cause the aluminum-washing film to bend and curl, resulting in wrinkling during lamination. Too high a tension will cause severe stretching, curling, and lamination failure. The unwinding tension of the heat shrink film layer is 6-10% of the laminating film tension. If the tension is too low, the heat shrink film cannot be straightened and wrinkles are likely to form during lamination. If the tension is too high, for example 15%, although the label will still bend toward the laminating film surface after lamination, it will bend toward the heat shrink film surface after subsequent processing, causing the label to warp easily and making it unsuitable for bending labeling. If the tension continues to increase, such as above 30%, the heat shrink film will be excessively stretched and deformed, making lamination failure.

[0026] 3) Positioning printing on the heat shrink film layer to form the first printing layer, using a digital printing machine for printing, and setting the temperature to 60-65°C when applying the digital coating liquid; after the heat shrink film is heated, the surface tension of the heat shrink film increases, making the composite film flat during printing;

[0027] 4) Applying a release coating locally on the laser stealth layer to form a local release coating;

[0028] 5) Printing is performed on the partial release coating surface to form a second printing layer. A digital printing machine is used for printing. When applying the digital coating liquid, the temperature is set to 60-65°C. When the heat shrink film is heated, the surface tension of the heat shrink film increases, making the composite film flat during printing.

[0029] 6) Compounding the second printed layer and the holographic coating material with glue;

[0030] 7) peeling off the holographic coating material PET film from step 6);

[0031] 8) Die-cutting the adhesive substrate layer to form an anti-transfer pattern, laminating the holographic coating layer from step 7) with the substrate layer, setting the oven temperature to 30-50° C., and die-cutting to form a double-code peel-off seal anti-counterfeiting mark;

[0032] Wherein, the self-adhesive adhesive comprises a third glue layer, a base material 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, and 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.

[0036] Preparation process of molded 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 the holographic molded plate;

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

[0038] A coating is applied beneath the plastic film layer, and then embossed onto the coating to form an embossed holographic information layer. The laser information is hidden when the embossed holographic information layer of the laser stealth layer is coated with a local release coating. When the laser stealth layer and the local release coating are separated, the embossed holographic information is revealed. The local release coating conceals the information in the laser stealth layer, while the peel-off mark separates from the laser stealth layer and the local release coating. The laser stealth information is visible on both the laser stealth layer and the release coating. After recombination, the laser stealth information persists, preventing secondary use and providing a warning.

[0039] The preparation process of holographic coating is as follows:

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

[0041] B. Use vacuum aluminizing technology to perform full-plate aluminizing to obtain an aluminized layer, and then obtain a transfer holographic rainbow embossed aluminized film material, wherein the transfer laser aluminized coating layer, the laser embossed information layer and the aluminized layer constitute the holographic coating layer, and the transfer laser aluminized 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 die-cut with a pattern knife. When the label substrate is peeled off, it can be peeled off and damaged from the pattern knife 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 pattern knife of the substrate, ensuring that the bottom layer is easy to peel off from the surface layer.

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

[0046] (3) When heat shrink film is used, the heat shrink film and the first printed layer shrink and deform under the action of hot air, 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 hidden variable information being unable to be peeled off and viewed or being peeled off incompletely. The utility model 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-cut, 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 QR 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 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a schematic structural diagram of a double-code peel-off sealing anti-counterfeiting mark according to Example 1 of the present utility model;

[0052] Figure 2This is a schematic structural diagram of a double-code peel-off sealing anti-counterfeiting mark according to Example 2 of the present utility model;

[0053] In the figure: 1. First printing layer; 2. Heat shrink film layer; 3. First pressure-sensitive adhesive layer; 4. Aluminum-washed film layer; 5. First glue layer; 6. Laser stealth layer; 7. Local release coating; 8. Second printing layer; 9. Second glue layer; 10. Base material layer; 11. Second pressure-sensitive adhesive layer; 12. Release paper layer; 13. Holographic coating layer; 14. Third glue layer. DETAILED DESCRIPTION

[0054] The present invention will be further described below with reference to the embodiments.

[0055] Example 1

[0056] The dual-code peel-off seal anti-counterfeiting label comprises, from top to bottom, a first printed layer 1, a heat shrink film layer 2, a first pressure-sensitive adhesive layer 3, an aluminum-washed film layer 4, a first glue layer 5, a laser-stealth layer 6, a partial release coating 7, a second printed layer 8, a second glue layer 9, a substrate layer 10, a second pressure-sensitive adhesive layer 11, and a release paper layer 12. The anti-counterfeiting label can be peeled off and is divided into a peelable portion and a retaining portion. The peelable portion comprises, from top to bottom, the first printed layer 1, the heat shrink film layer 2, the first pressure-sensitive adhesive layer 3, the aluminum-washed film layer 4, the first glue layer 5, the laser-stealth layer 6, and the second printed layer 8; the retaining portion comprises, from top to bottom, a partial release coating 7, the second printed layer 8, the second glue layer 9, the substrate layer 10, the second pressure-sensitive adhesive layer 11, and the release paper layer 12.

[0057] The heat shrinkable film layer 2 is made of PP film with a thickness of 20 μm.

[0058] The first pressure-sensitive adhesive layer 3 is UV pressure-sensitive adhesive with a thickness of 10 μm.

[0059] The first printed layer 1 and the second printed layer 8 contain variable information. The variable information on the first printed layer 1 is a QR code; the information on the second printed layer 8 is a variable digital code. The washed aluminum film layer 4 includes an unwashed aluminum area that obscures the variable digital code on the second printed layer 8. The washed aluminum film layer 4 also includes a holographic white area that corresponds to the QR code on the first printed layer 1, effectively improving the QR code's readability.

[0060] The method for preparing the dual-code peel-off sealing anti-counterfeiting label comprises the following steps:

[0061] 1) Using a composite glue coating machine, glue is applied to the plastic film surface of the laser hidden layer 6, and then passed through an oven to be laminated with the washed aluminum film layer 4 to obtain a composite film; wherein, the unwinding tension of the washed aluminum film layer 4 is 200N, and the unwinding tension of the laser hidden layer 6 is 140% of the unwinding tension of the washed aluminum film layer 4; the purpose is to make the composite film bend towards the laser hidden layer 6 after lamination;

[0062] 2) The aluminum-washed film layer 4 of the composite film obtained in step 1 is laminated with the heat shrink film layer 2 using glue. During the lamination, the tension of the composite film is set to 165N, and the tension of the heat shrink film layer 2 is set to 8% of the tension of the composite film; the purpose is to keep the composite film surface still curved toward the laser stealth layer 6;

[0063] 3) Positioning and printing on the heat shrinkable film layer 2 to form a first printed layer 1; 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, making the composite film flat during printing;

[0064] 4) Applying a release coating to a portion of the laser stealth layer 6 to form a partial release coating 7;

[0065] 5) Printing is performed on the partial release coating 7 to form a second printed layer 8; a digital printing machine is used for printing, and the temperature is set to 62° C. when applying the digital coating liquid; 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;

[0066] 6) Die-cutting the substrate layer 10 of the self-adhesive label to form an anti-transfer pattern, laminating the second printed layer 8 with the substrate layer 10, setting the oven temperature to 40°C, and die-cutting to form a double-code peel-off seal anti-counterfeiting mark; wherein the self-adhesive label includes a second glue layer 9, a substrate layer 10, a second pressure-sensitive adhesive layer 11, and a release paper layer 12.

[0067] The preparation process of the aluminum film layer 4 is as follows:

[0068] 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 for mold forming 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 the 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.

[0069] The preparation process of the laser stealth layer 6 is as follows:

[0070] 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.

[0071] The preparation process of the holographic coating 13 is as follows:

[0072] A. Apply transfer laser aluminizing coating on PET film and use embossing printing machine to emboss to obtain laser embossed information layer;

[0073] B. Use vacuum aluminizing technology to perform full-plate aluminizing to obtain an aluminized layer, and then obtain a transfer holographic rainbow embossed aluminized film material, wherein the transfer laser aluminized coating layer, the laser embossed information layer and the aluminized layer constitute the holographic coating layer 13, and the transfer laser aluminized coating layer can be peeled off from the PET film.

[0074] Example 2

[0075] The dual-code peel-off seal anti-counterfeiting mark described above is different from that of Example 1 in that:

[0076] A holographic coating layer 13 and a third glue layer 14 are provided between the second glue layer 9 and the base material layer 10 .

[0077] The method for preparing the dual-code peel-off sealing anti-counterfeiting label comprises the following steps:

[0078] 1) Using a composite glue coating machine, glue is applied to the plastic film surface of the laser hidden layer 6, and then passed through an oven to be laminated with the washed aluminum film layer 4 to obtain a composite film; wherein, the unwinding tension of the washed aluminum film layer 4 is 200N, and the unwinding tension of the laser hidden layer 6 is 140% of the unwinding tension of the washed aluminum film layer 4; the purpose is to make the composite film bend towards the laser hidden layer 6 after lamination;

[0079] 2) The aluminum-washed film layer 4 of the composite film obtained in step 1 is laminated with the heat shrink film layer 2 using glue. During the lamination, the tension of the composite film is set to 165N, and the tension of the heat shrink film layer 2 is set to 8% of the tension of the composite film; the purpose is to keep the composite film surface still curved toward the laser stealth layer 6;

[0080] 3) Positioning and printing on the heat shrinkable film layer 2 to form a first printed layer 1; 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, making the composite film flat during printing;

[0081] 4) Applying a release coating to a portion of the laser stealth layer 6 to form a partial release coating 7;

[0082] 5) Printing is performed on the partial release coating 7 to form a second printed layer 8; a digital printing machine is used for printing, and the temperature is set to 62° C. when applying the digital coating liquid; 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;

[0083] 6) Compounding the second printed layer 8 and the aluminum-plated layer of the holographic coating 13 material with glue;

[0084] 7) peeling off the PET film of the holographic coating 13 material in step 6);

[0085] 8) Die-cutting the substrate layer 10 of the self-adhesive label to form an anti-transfer pattern, laminating the holographic coating 13 from step 7) with the substrate layer 10, setting the oven temperature to 40° C., and die-cutting to form a double-code peel-off seal anti-counterfeiting mark; wherein the self-adhesive label includes a third glue layer 14, the substrate layer 10, the second pressure-sensitive adhesive layer 11, and the release paper layer 12.

[0086] The rest is the same as in Example 1.

[0087] The present invention is not limited to the embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Without departing from the scope of protection of the present invention, those skilled in the art may make various modifications based on the teachings of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A double-code peel-off seal anti-counterfeiting label, characterized by: The invention comprises a first printing layer (1), a heat shrinkable film layer (2), a first pressure-sensitive adhesive layer (3), an aluminum-washing film layer (4), a first glue layer (5), a laser stealth layer (6), a local release coating (7), a second printing layer (8), a second glue layer (9), a substrate layer (10), a second pressure-sensitive adhesive layer (11) and a release paper layer (12), which are arranged in sequence from top to bottom.

2. The dual-code peel-off seal 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 a first printing layer (1), a heat shrinkable film layer (2), a first pressure-sensitive adhesive layer (3), an aluminum-washing film layer (4), a first glue layer (5), a laser stealth layer (6), and a second printing layer (8) from top to bottom; the bottom part is composed of a local release coating (7), a second printing layer (8), a second glue layer (9), a substrate layer (10), a second pressure-sensitive adhesive layer (11), and a release paper layer (12) from top to bottom.

3. The dual-code peel-off seal anti-counterfeiting label according to claim 1, characterized in that: The heat shrinkable film layer (2) is one of PP, PE, PVC and POF, and has a thickness of 10-50 μm.

4. The dual-code peel-off seal anti-counterfeiting label according to claim 1, characterized in that: The first pressure-sensitive adhesive layer (3) is one of hot-melt pressure-sensitive adhesive, oil-based pressure-sensitive adhesive, water-based pressure-sensitive adhesive, and UV pressure-sensitive adhesive, and has a thickness of 3-15 μm.

5. The dual-code peel-off seal anti-counterfeiting label according to claim 1, characterized in that: The first printed layer (1) and the second printed layer (8) contain variable information.

6. The dual-code peel-off seal anti-counterfeiting label according to claim 5, characterized in that: The aluminum-washed film layer (4) includes an unwashed aluminum area, and the unwashed aluminum area covers the variable information on the second printing layer (8).

7. The dual-code peel-off seal anti-counterfeiting label according to claim 5, characterized in that: The aluminum-washed film layer (4) includes a holographic white area, and the holographic white area corresponds to the variable information position of the first printing layer (1).

8. The dual-code peel-off seal anti-counterfeiting label according to claim 1, characterized in that: A holographic coating layer (13) and a third glue layer (14) are provided between the second glue layer (9) and the base material layer (10).

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