A roll of tape

Abstract

A roll of adhesive tape includes: adhesive tape; the adhesive tape comprises, in sequence, an adhesive backing layer, a base layer, an anti-counterfeiting layer, and a release layer; wherein, the base layer is strip-shaped, the release layer is transparent, and the anti-counterfeiting layer has an anti-counterfeiting mark on the side facing the release layer; the adhesive tape is wound into a roll, and the adhesive backing layer is located inside the base layer. After the adhesive tape is wound together layer by layer, the adhesive backing layer of the outer layer of adhesive tape contacts the release layer of the inner layer of adhesive tape, but the adhesive backing layer of the outer layer of adhesive tape does not directly contact the anti-counterfeiting layer on the inner layer of adhesive tape. When the user tears the tape from the roll, the adhesive backing layer of the outer layer of adhesive tape will not stick to the anti-counterfeiting layer on the inner layer of adhesive tape during the process of detaching from the adjacent inner layer of adhesive tape. Therefore, the anti-counterfeiting layer on the adjacent inner layer of adhesive tape will not be damaged, ensuring that the anti-counterfeiting mark on the inner layer of adhesive tape remains intact.

Description

Technical Field

[0001] This article discusses anti-counterfeiting technology, particularly a type of tape roll. Background Technology

[0002] In modern commodity circulation, packaging boxes serve as crucial carriers for product transportation and storage, making the security of their sealing and the anti-counterfeiting requirements paramount. Adhesive tape rolls, a commonly used packaging material, are increasingly being printed with anti-counterfeiting information on the side away from the adhesive backing to meet these requirements. This ensures that the anti-counterfeiting information adheres to the packaging box along with the tape, providing a certain level of protection against counterfeiting.

[0003] However, current anti-counterfeiting tapes have a significant problem in practical applications. Due to the strong adhesive force of the backing, when a user tears the tape from the roll, the adhesive often peels off portions of the anti-counterfeiting information from adjacent inner layers of tape. This severely damages the anti-counterfeiting information on these inner layers, rendering it incomplete or ineffective during subsequent use. This not only reduces the overall anti-counterfeiting effect of the tape but also creates opportunities for counterfeiters, increasing the risk of product counterfeiting and harming the brand image of companies and the interests of consumers. Therefore, a new technical solution is urgently needed to address this problem. Utility Model Content

[0004] This application provides a tape roll, which includes: tape;

[0005] The tape comprises an adhesive backing layer, a base layer, an anti-counterfeiting layer, and a release layer stacked in sequence;

[0006] The substrate layer is strip-shaped, the isolation layer is transparent, the anti-counterfeiting layer has an anti-counterfeiting mark on the side facing the isolation layer, the tape is wound into a roll, and the adhesive backing layer is located inside the substrate layer.

[0007] In one illustrative embodiment, the anti-counterfeiting mark is a 3D code.

[0008] In one illustrative embodiment, multiple anti-counterfeiting labels are provided, and the multiple anti-counterfeiting labels are arranged sequentially at intervals along the extension direction of the substrate layer.

[0009] In one illustrative embodiment, both the substrate layer and the isolation layer are biaxially oriented polypropylene films;

[0010] The area of ​​the anti-counterfeiting layer is smaller than the area of ​​the base layer, and the isolation layer is pasted on the part of the anti-counterfeiting layer and the base layer that is not covered by the anti-counterfeiting layer on the side closest to the anti-counterfeiting layer.

[0011] In one illustrative embodiment, the anti-counterfeiting layer is a metal layer attached to the substrate layer by a hot stamping process.

[0012] In one illustrative embodiment, graphic information is printed on the side of the substrate layer adjacent to the anti-counterfeiting layer.

[0013] In one illustrative embodiment, the substrate layer is a biaxially oriented polypropylene film, and the anti-counterfeiting layer is a laser-coated aluminum film.

[0014] In one illustrative embodiment, the insulating layer is a silicone oil layer.

[0015] After the tape is wound together layer by layer, the adhesive backing of the outer tape comes into contact with the separating layer of the inner tape. The adhesive backing of the outer tape does not come into direct contact with the anti-counterfeiting layer on the inner tape. When the user tears the tape off the roll, the adhesive backing of the outer tape will not stick to the anti-counterfeiting layer on the inner tape as it separates from the adjacent inner tape. As a result, the anti-counterfeiting layer on the adjacent inner tape will not be damaged, ensuring that the anti-counterfeiting label on the inner tape remains intact.

[0016] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. Other advantages of this application can be realized and obtained by means of the embodiments described in the description and the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings are used to provide an understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0018] Figure 1 This is a schematic diagram of an adhesive tape roll according to Embodiment 1 of this application;

[0019] Figure 2 This is a schematic diagram of the unfolded tape in Embodiment 1 of this application;

[0020] Figure 3 This is a cross-sectional schematic diagram of the tape in Embodiment 1 of this application;

[0021] Figure 4 This is a schematic diagram of an adhesive tape roll according to Embodiment 2 of this application;

[0022] Figure 5 This is a schematic diagram of the unfolded tape in Embodiment 2 of this application;

[0023] Figure 6 This is a cross-sectional schematic diagram of the tape in Embodiment 2 of this application. Detailed Implementation

[0024] This application describes several embodiments, but these descriptions are exemplary and not limiting, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with, or may replace, any feature or element of any other embodiment.

[0025] This application includes and contemplates combinations of features and elements known to those skilled in the art. The embodiments, features, and elements disclosed in this application can also be combined with any conventional features or elements to form unique inventive solutions. Any feature or element of any embodiment can also be combined with features or elements from other inventive solutions to form another unique inventive solution. Therefore, it should be understood that any feature shown and / or discussed in this application can be implemented individually or in any suitable combination. Therefore, the embodiments are not limited except by the limitations imposed by the appended claims and their equivalents. Furthermore, various modifications and changes can be made within the scope of the appended claims.

[0026] Furthermore, in describing representative embodiments, the specification may have presented methods and / or processes as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described herein, to the extent that it does not depend on such a specific order. As will be understood by those skilled in the art, other sequences of steps are also possible. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation of the claims. Moreover, the claims concerning the method and / or process should not be limited to the steps performed in the written order, and those skilled in the art will readily understand that these orders can be varied and still remain within the spirit and scope of the embodiments of this application.

[0027] Example 1

[0028] like Figure 1 As shown, an adhesive tape roll 100 according to Embodiment 1 of this application. The adhesive tape roll 100 includes an adhesive tape 2 and a support cylinder 1. The adhesive tape is wound around the support cylinder 1. Figure 2 , 3 As shown, the tape 2 includes an adhesive backing layer 21, a base layer 22, an anti-counterfeiting layer 23, and a release layer 24 stacked in sequence.

[0029] The substrate layer 22 has a flexible, strip-like structure. The substrate layer 22 can be made of a polymer material.

[0030] The adhesive backing layer 21 is made of adhesive. The adhesive backing layer 21 completely covers one side of the substrate layer 22. The adhesive can be water-based or oil-based. The adhesive adheres to other items through interfacial adhesion and cohesion. The adhesive can be epoxy resin adhesive, acrylic adhesive, polyurethane adhesive, etc.

[0031] An anti-counterfeiting layer 23 covers the side of the substrate layer 22 facing away from the adhesive layer 21. The anti-counterfeiting layer 23 can be plated onto the substrate layer 22 or printed onto it. An anti-counterfeiting label 231 is provided on the side of the anti-counterfeiting layer 23 facing the release layer 24. The anti-counterfeiting label 231 has specific anti-counterfeiting information used to verify the authenticity of the product. The anti-counterfeiting label 231 can be an anti-counterfeiting code, which can be a one-dimensional barcode, a two-dimensional barcode, or a three-dimensional barcode. The anti-counterfeiting layer 23 can be configured as a strip structure, with its extension direction being the same as that of the substrate layer 22. The width of the anti-counterfeiting layer 23 can be less than the width of the substrate layer 22, and the anti-counterfeiting layer 23 cannot completely cover the substrate layer 22. The anti-counterfeiting layer 23 can be located in the central area of ​​the substrate layer 22.

[0032] The isolation layer 24 is made of a transparent material. The isolation layer 24 is transparent. The isolation layer 24 covers the side of the anti-counterfeiting layer 23 away from the substrate layer 22, and also covers areas of the substrate layer 22 not covered by the anti-counterfeiting layer 23. The isolation layer 24 is also constructed as a thin, strip-shaped structure. The thickness of the isolation layer 24 can be less than the thickness of the substrate layer 22. The width of the isolation layer 24 can be the same as the width of the substrate layer 22.

[0033] The support tube 1 can be constructed as a cylinder. The support tube 1 can be a paper tube or a plastic tube. The tape roll 100 is wound around the support tube 1, and the adhesive backing layer 21 is located inside the base layer 22.

[0034] In this way, after the tape 2 is wound together layer by layer, the adhesive backing layer 21 of the outer tape 2 comes into contact with the separating layer 24 of the inner tape 2. The adhesive backing layer 21 of the outer tape 2 does not come into direct contact with the anti-counterfeiting layer 23 on the inner tape 2. When the user tears the tape 2 off the tape roll 100, the adhesive backing of the outer tape 2 will not stick off the anti-counterfeiting layer 23 on the inner tape 2 during the process of separating from the adjacent inner tape 2. As a result, the anti-counterfeiting layer 23 on the adjacent inner tape 2 will not be damaged, and the anti-counterfeiting mark 231 on the inner tape 2 can be kept intact.

[0035] In one illustrative embodiment, the anti-counterfeiting mark 231 is a three-dimensional code.

[0036] Users can scan the 3D code using their mobile phones or tablets. The phone then sends the 3D code to an anti-counterfeiting server. Upon receiving the 3D code, the server verifies its authenticity and sends confirmation that the product is genuine to the user's phone. For example, if the anti-counterfeiting code database contains the same 3D code, and the code is genuine, then the server will confirm that the product is authentic.

[0037] In one illustrative embodiment, multiple anti-counterfeiting labels 231 are provided, and the multiple anti-counterfeiting labels 231 are arranged sequentially at intervals along the extension direction of the substrate layer 22.

[0038] Anti-counterfeiting labels 231 are arranged sequentially along the extension direction of tape 2, and one label can be placed at equal intervals on tape 2. The spacing between anti-counterfeiting labels 231 on tape 2 can be determined according to specific needs. The anti-counterfeiting labels 231 on tape 2 can be identical or different.

[0039] In an illustrative embodiment, both the substrate layer 22 and the separator layer 24 are biaxially oriented polypropylene (BOPP) films. BOPP films are multilayer co-extruded films, produced by co-extruded polypropylene granules into sheets, followed by stretching in both longitudinal and transverse directions. Due to the oriented molecular structure during stretching, BOPP films exhibit good physical stability, mechanical strength, airtightness, high transparency and gloss, and are tough and wear-resistant. The thickness of the substrate layer 22 can be 25 μm, and the thickness of the separator layer 24 can be 15 μm. The widths of the substrate layer 22 and the separator layer 24 are approximately the same, and their widths can be completely equal. The lengths of the substrate layer 22 and the separator layer 24 can also be completely equal.

[0040] The substrate layer 22 can be a pretreated biaxially oriented polypropylene film to ensure a strong bond between the substrate layer 22 and the adhesive layer 21. The release layer 24 can be an untreated biaxially oriented polypropylene film, making it difficult for the adhesive layer 21 to adhere firmly to the release layer 24. When the tape 2 is peeled off, the adhesive backing of the outer tape 2 can be more easily separated from the release layer 24 of the inner tape 2.

[0041] The area of ​​the anti-counterfeiting layer 23 is smaller than the area of ​​the substrate layer 22 and smaller than the area of ​​the isolation layer 24. The isolation layer 24 is used to adhere the anti-counterfeiting layer 23 and the portion of the substrate layer 22 that is not covered by the anti-counterfeiting layer 23 on the side closest to the anti-counterfeiting layer 23.

[0042] The anti-counterfeiting layer 23 is located between the substrate layer 22 and the isolation layer 24 as an interlayer, and its area is smaller than both the substrate layer 22 and the isolation layer 24. The anti-counterfeiting layer 23 can be completely sandwiched between the isolation layer 24 and the anti-counterfeiting layer 23, making it difficult to be damaged.

[0043] In one illustrative embodiment, the anti-counterfeiting layer 23 is a metal layer attached to the substrate layer 22 using a hot stamping process. Attaching the anti-counterfeiting layer 23 to the substrate layer 22 using hot stamping ensures a tight bond between the anti-counterfeiting layer 23 and the substrate layer 22, preventing it from easily falling off. Simultaneously, the anti-counterfeiting layer 23 and the anti-counterfeiting mark 231 on it have a metallic texture, making them more aesthetically pleasing.

[0044] In one illustrative embodiment, graphic information is printed on the side of the substrate layer 22 that is close to the anti-counterfeiting layer 23.

[0045] The graphic information can include anti-counterfeiting label 231, instructions for use, website address, trademark, production date, shelf life, advertising slogans, etc. In a market of homogeneous products, the unique tape 2 printed with graphic information can become a brand differentiation highlight, attracting consumers. Before printing the graphic information, a base color can be printed on the substrate layer 22. This base color can be white or black, which can cover the gaps in the packaging box, making the packaging box more aesthetically pleasing.

[0046] This embodiment also discloses a method for manufacturing a roll of adhesive tape 100, which includes the following steps:

[0047] Step S1: Cover one side of the base layer 22 with the anti-counterfeiting layer 23, and set the anti-counterfeiting mark 231 on the side of the anti-counterfeiting layer 23 facing away from the base layer 22;

[0048] The anti-counterfeiting layer 23 can be prefabricated and then transferred to the substrate layer 22; or the anti-counterfeiting layer 23 can be directly fabricated on the substrate layer 22. The anti-counterfeiting layer 23 is placed over one side of the substrate layer 22 and connected to the substrate layer 22.

[0049] Step S2: Cover the side of the anti-counterfeiting layer 23 that faces away from the substrate layer 22 with the isolation layer 24;

[0050] The isolation layer 24 can be prefabricated and then attached to the anti-counterfeiting layer 23; or the isolation layer 24 can be directly fabricated on the anti-counterfeiting layer 23. The isolation layer 24 covers the side of the anti-counterfeiting layer 23 facing away from the substrate layer 22, so that the isolation layer 24 connects the anti-counterfeiting layer 23 and the substrate layer 22.

[0051] Step S3: Apply adhesive to the side of the substrate layer 22 away from the anti-counterfeiting layer 23 to form an adhesive backing layer 21, thereby producing the tape 2.

[0052] The adhesive is uniformly applied to the substrate layer 22 to form a backing layer 21 of uniform thickness on the substrate layer 22.

[0053] Step S4: Cut the tape 2 into sections and wrap it around the support cylinder 1.

[0054] The prepared tape 2 is divided into sections, and the divided tape 2 is wound around the outer periphery of the support cylinder 1, with the adhesive backing of the tape 2 facing inwards during winding. The length of tape 2 in a roll of tape 100 can be 180 meters.

[0055] When tape roll 100 is manufactured using this method, after the tape 2 is wound together layer by layer, the adhesive backing layer 21 of the outer tape 2 comes into contact with the separating layer 24 of the inner tape 2. The adhesive backing layer 21 of the outer tape 2 does not come into direct contact with the anti-counterfeiting layer 23 on the inner tape 2. When the user tears the tape 2 off the tape roll 100, the adhesive backing of the outer tape 2 will not stick to the anti-counterfeiting layer 23 on the inner tape 2 during the process of separating from the adjacent inner tape 2. As a result, the anti-counterfeiting layer 23 on the adjacent inner tape 2 will not be damaged, and the anti-counterfeiting mark 231 on the inner tape 2 can be kept intact.

[0056] In one illustrative embodiment, step S1 includes steps S11 and S12.

[0057] Step S11: Make anti-counterfeiting hot foil, which has an anti-counterfeiting mark 231.

[0058] The process for producing anti-counterfeiting hot stamping foil is as follows:

[0059] The PET base film is cleaned to remove grease and dust, increase surface tension, and enhance coating adhesion. A thin layer of acrylic primer is then applied to the PET base film to improve interlayer bonding.

[0060] Using gravure coating or comma roller coating, the silicone release agent is evenly coated on the surface of the PET base film. A high-temperature oven is used to heat the film to crosslink the siloxane, forming a low surface energy release layer on the PET base film surface, ensuring that it can be easily peeled off during hot stamping.

[0061] A metal layer is deposited on the release layer using vapor deposition. The PET base film is fed into a vacuum coating machine, and aluminum wire is heated to 1200-1400℃ in a resistance furnace to evaporate into a gaseous state. The aluminum vapor is deposited on the surface of the release layer to form a metal layer. Alternatively, multiple metal layers are deposited on the release layer using magnetron sputtering.

[0062] An anti-counterfeiting label 231 is created on the metal layer. This can be achieved by laser engraving, chemical etching, printing, or photolithography.

[0063] An adhesive is applied to a metal layer to form an adhesive layer, thus creating anti-counterfeiting hot stamping foil. This adhesive can be an acrylic pressure-sensitive adhesive, suitable for bonding plastic films such as BOPP.

[0064] Step S12: The metal layer of the anti-counterfeiting hot foil is attached to one side of the base layer 22 using a hot foil stamping process to form an anti-counterfeiting layer 23.

[0065] The substrate layer 22 and the anti-counterfeiting hot stamping foil are fed into the hot stamping station, where a hot press plate is used to hot press the anti-counterfeiting hot stamping foil onto the substrate layer 22. Hot pressing separates the metal layer on the anti-counterfeiting hot stamping foil from the release layer, allowing the metal layer to adhere to the substrate layer 22. Thus, the metal layer is transferred to the substrate layer 22, serving as the anti-counterfeiting layer 23 on the substrate layer 22. This anti-counterfeiting layer 23 is firmly fixed to the substrate layer 22.

[0066] In one illustrative embodiment, the method for manufacturing the tape roll 100 further includes step S0 prior to step S1;

[0067] Step S0: Print graphic information on the side of the substrate layer 22 where the anti-counterfeiting layer 23 is set.

[0068] The graphic information can include anti-counterfeiting label 231, instructions for use, website address, trademark, production date, shelf life, advertising slogans, etc. In a market of homogeneous products, the unique tape 2 printed with graphic information can become a brand differentiation highlight, attracting consumers. Before printing the graphic information, a base color can be printed on the substrate layer 22. This base color can be white or black, which can cover the gaps in the packaging box, making the packaging box more aesthetically pleasing.

[0069] In one illustrative embodiment, in step S2, the isolation layer 24 is adhered to the side of the anti-counterfeiting layer 23 facing away from the substrate layer 22.

[0070] The isolation layer 24 is pasted onto the anti-counterfeiting layer 23 by an adhesive method. The connection between the isolation layer 24 and the anti-counterfeiting layer 23, as well as between the isolation layer 24 and the base layer, is tighter, making it difficult to separate the isolation layer 24 from the anti-counterfeiting layer 23.

[0071] In one illustrative embodiment, the manufacturing method further includes step S30. Step S30 occurs after step S2 or step S3 and before step S4.

[0072] Step S30: Collect an image of the anti-counterfeiting label 231.

[0073] Machine vision technology can be used to acquire images of tape 2, and artificial intelligence image recognition technology can be used to identify the anti-counterfeiting mark 231 image on tape 2 from the tape 2 image and store the anti-counterfeiting mark 231 image.

[0074] Example 2

[0075] like Figure 4As shown, an adhesive tape roll 100a according to Embodiment 1 of this application. The adhesive tape roll 100a includes an adhesive tape 2a and a support cylinder 1a. The adhesive tape 2a is wound around the support cylinder 1a. Figure 5 , 6 As shown, the tape 2a includes an adhesive backing layer 21a, a base layer 22a, an anti-counterfeiting layer 23a, and a release layer 24a stacked in sequence.

[0076] The substrate layer 22a has a flexible, strip-like structure. The substrate layer 22a can be made of a polymer material. Specifically, the substrate layer 22a is a biaxially oriented polypropylene film.

[0077] The adhesive backing layer 21a is made of adhesive. The adhesive backing layer 21a completely covers one side of the substrate layer 22a. The adhesive can be water-based or oil-based. The adhesive adheres to other objects through interfacial adhesion and cohesion. The adhesive can be epoxy resin adhesive, polyacrylic adhesive, polyurethane adhesive, etc.

[0078] An anti-counterfeiting layer 23a covers the side of the substrate layer 22a facing away from the adhesive layer 21a. The anti-counterfeiting layer 23a is a laser-coated aluminum film. An anti-counterfeiting label 231a is provided on the side of the anti-counterfeiting layer 23a facing the release layer 24a. The anti-counterfeiting label 231a has specific anti-counterfeiting information used to verify the authenticity of the product. The anti-counterfeiting label 231a can be an anti-counterfeiting code, which can be a one-dimensional barcode, a two-dimensional barcode, or a three-dimensional barcode. The anti-counterfeiting layer 23a can be configured as a strip structure, with its extension direction being the same as that of the substrate layer 22a. The width of the anti-counterfeiting layer 23a can be smaller than the width of the substrate layer 22a, and the anti-counterfeiting layer 23a cannot completely cover the substrate layer 22a. The anti-counterfeiting layer 23a can be located in the central area of ​​the substrate layer 22a.

[0079] The isolation layer 24a is made of a transparent material. The isolation layer 24a is transparent. The isolation layer 24a covers the side of the anti-counterfeiting layer 23a that is away from the substrate layer 22a. The isolation layer 24a is a silicone oil layer.

[0080] The isolation layer 24a is also constructed as a strip-shaped thin layer structure. The thickness of the isolation layer 24a can be less than the thickness of the substrate layer 22a. The width of the isolation layer 24a can be the same as the width of the substrate layer 22a.

[0081] The support tube 1a can be constructed as a cylinder. The support tube 1a can be a paper tube or a plastic tube. The tape is wound around the support tube 1a into a roll, and the adhesive layer 21a is located inside the base layer 22a.

[0082] In this way, after the tape 2a is wound together layer by layer, the adhesive backing layer 21a of the outer tape 2a comes into contact with the separating layer 24a of the inner tape 2a. The adhesive backing layer 21a of the outer tape 2a does not directly contact the anti-counterfeiting layer 23a on the inner tape 2a. When the user tears the tape 2a from the tape roll 100a, the adhesive backing of the outer tape 2a will not stick to the anti-counterfeiting layer 23a on the inner tape 2a during the process of separating from the adjacent inner tape 2a. Therefore, the anti-counterfeiting layer 23a on the adjacent inner tape 2a will not be damaged, ensuring that the anti-counterfeiting mark 231a on the inner tape 2a remains intact. Furthermore, since the anti-counterfeiting layer 23a is a laser-coated aluminum film, it produces a rainbow reflective effect when light shines on the anti-counterfeiting mark 231a on the laser-coated aluminum film, making it more aesthetically pleasing. At the same time, the micro-nano structure of the anti-counterfeiting mark 231a is difficult to replicate, allowing for the customization of exclusive anti-counterfeiting patterns, resulting in better anti-counterfeiting effects.

[0083] This embodiment also discloses a method for manufacturing tape roll 100a, which includes the following steps:

[0084] Step S1: Cover one side of the base layer 22a with the anti-counterfeiting layer 23a, and set the anti-counterfeiting mark 231a on the side of the anti-counterfeiting layer 23a that is opposite to the base layer 22a;

[0085] In this embodiment, step S1 includes steps S11a to S15a.

[0086] Step S11a: Use a laser engraving machine to engrave a raised laser anti-counterfeiting pattern on the original plate to form a laser master plate;

[0087] Step S12a: Use a laser master to hot press one side of the substrate layer 22a to print a laser anti-counterfeiting pattern with diffraction function on the substrate layer 22a.

[0088] When light shines on the laser anti-counterfeiting pattern, it produces a rainbow reflective effect.

[0089] Step S13a: Vacuum aluminum plating is performed on the side of the substrate layer 22a with the laser anti-counterfeiting pattern to form an aluminum film on the surface of the substrate layer 22a.

[0090] The substrate layer 22a is placed inside the cavity of the vacuum aluminum plating machine, and the cavity is evacuated to prevent the aluminum from reacting with the air during evaporation. An aluminum wire is heated or vaporized under electron beam bombardment to form aluminum vapor, which fills the cavity. The aluminum vapor is uniformly deposited on the side of the substrate layer 22a with the laser anti-counterfeiting pattern, forming a uniform aluminum film. The thickness of the aluminum film can be 50~200nm.

[0091] Step S14a: Remove excess aluminum film, leaving the portion of the aluminum film covering the laser anti-counterfeiting pattern to form anti-counterfeiting layer 23a.

[0092] Excess aluminum film can be removed by laser irradiation or chemical etching.

[0093] Step S15a: A three-dimensional code is assigned at equal length intervals in the extension direction of the substrate layer 22a, and the three-dimensional code, which serves as the anti-counterfeiting mark 231a, is printed onto the anti-counterfeiting layer 23a.

[0094] The 3D code can be printed using a registration printing method, where the color of each pixel on the 3D code is random.

[0095] Step S2: Cover the side of the anti-counterfeiting layer 23a that faces away from the substrate layer 22a with the isolation layer 24a;

[0096] In this embodiment, silicone oil is coated on the side of the anti-counterfeiting layer 23a facing away from the substrate layer 22a to form a silicone oil layer as an isolation layer 24a.

[0097] Step S3: Apply adhesive to the side of the substrate layer 22a away from the anti-counterfeiting layer 23a to form a backing layer 21a, thereby producing tape 2a.

[0098] The adhesive is uniformly applied to the substrate layer 22a to form a backing layer 21a of uniform thickness on the substrate layer 22a.

[0099] Step S4: Wrap tape 2a around support cylinder 1a.

[0100] The prepared tape 2a is rolled into smaller rolls. The tape roll 100a is wound around the outer wall of the support cylinder 1a, with the adhesive backing of the tape 2a facing inwards during winding. The length of the tape 2a in a roll of tape 100a can be 180 meters.

[0101] Using this manufacturing method to produce tape roll 100a, after the tape 2a is wound together layer by layer, the adhesive backing layer 21a of the outer tape 2a comes into contact with the separating layer 24a of the inner tape 2a. The adhesive backing layer 21a of the outer tape 2a does not directly contact the anti-counterfeiting layer 23a on the inner tape 2a. When the user tears the tape 2a off the tape roll 100a, the adhesive backing of the outer tape 2a will not stick to the anti-counterfeiting layer 23a on the inner tape 2a during the process of separating from the adjacent inner tape 2a. Therefore, the anti-counterfeiting layer 23a on the adjacent inner tape 2a will not be damaged, and the anti-counterfeiting mark 231a on the inner tape 2a can be kept intact.

[0102] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0103] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of those features.

[0104] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0105] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0106] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0107] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0108] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A roll of adhesive tape, characterized in that, include: adhesive tape; The tape comprises an adhesive backing layer, a base layer, an anti-counterfeiting layer, and a release layer stacked in sequence; The substrate layer is strip-shaped, the isolation layer is transparent, the anti-counterfeiting layer has an anti-counterfeiting mark on the side facing the isolation layer, the tape is wound into a roll, and the adhesive backing layer is located inside the substrate layer.

2. The tape roll according to claim 1, characterized in that, The anti-counterfeiting mark is a 3D code.

3. The tape roll according to claim 1, characterized in that, Multiple anti-counterfeiting labels are provided, and the multiple anti-counterfeiting labels are arranged sequentially at intervals along the extension direction of the substrate layer.

4. The tape roll according to any one of claims 1 to 3, characterized in that, Both the substrate layer and the isolation layer are biaxially oriented polypropylene films. The area of ​​the anti-counterfeiting layer is smaller than the area of ​​the base layer, and the isolation layer is pasted on the part of the anti-counterfeiting layer and the base layer that is not covered by the anti-counterfeiting layer on the side closest to the anti-counterfeiting layer.

5. The tape roll according to claim 4, characterized in that, The anti-counterfeiting layer is a metal layer attached to the base layer using a hot stamping process.

6. The tape roll according to claim 4, characterized in that, The substrate layer has graphic information printed on the side closest to the anti-counterfeiting layer.

7. The tape roll according to any one of claims 1 to 3, characterized in that, The substrate layer is a biaxially oriented polypropylene film, and the anti-counterfeiting layer is a laser-coated aluminum film.

8. The tape roll according to any one of claims 1 to 3, characterized in that, The isolation layer is a silicone oil layer.

Images