Multi-layer RFID (Radio Frequency Identification) tag with engraving-uncovering property and double-sided digital correspondence and production process

Abstract

The invention discloses a multi-layer RFID (Radio Frequency Identification) tag with engraving and uncovering performance and double-sided digital correspondence and a production process, and relates to the technical field of RFID tags. Comprising a base material layer, and a first release layer is arranged on one side of the base material layer; the first release layer is provided with an RFID layer, the RFID layer comprises a bare chip, an insulating layer and a polygonal metal layer, the insulating layer is provided with a through hole and is connected with a port of the bare chip, and the polygonal metal layer is electrically connected with the bare chip through the through hole; an adhesive layer is arranged on the RFID layer, a variable information layer is arranged on the adhesive layer, and the variable information layer comprises variable numerical codes printed on two sides. The RFID layer is arranged along an opening path, the function is maintained to be complete through normal screwing, antenna breakage, capsule breakage and digital blanking are synchronously triggered during illegal lifting, and a strong anti-fake closed loop of'destruction after opening 'is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of RFID tags, and specifically to a multi-layer RFID tag with peelability and double-sided digital correspondence and its production process. Background Art

[0002] With the upgrade of the anti-counterfeiting requirements of commodities, traditional RFID tags have obvious defects in terms of anti-physical damage, anti-transfer and replication, and multi-dimensional verification. In the prior art, the antenna design of ordinary RFID tags is single, and the directional attenuation is significant, resulting in insufficient signal stability; the anti-counterfeiting structure mostly relies on single-layer printing or simple physical damage, and is easy to be re-pasted or the information is tampered with. For example, the anti-counterfeiting label on the bottle cap often has insufficient structural strength or lacks a self-destruction mechanism, making it difficult to resist unauthorized opening. In addition, in the traditional production process, the bonding force between composite layers is poor, and high-temperature hot pressing is likely to cause material deformation or the failure of functional layers. There is an urgent need for an RFID tag and a supporting anti-counterfeiting structure that integrates high security, anti-environmental interference, and multi-level self-destruction verification to meet the anti-counterfeiting challenges of high-end commodities. Summary of the Invention

[0003] To solve the above problems, the present invention is realized through the following technical solutions: A multi-layer RFID tag with peelability and double-sided digital correspondence, including a substrate layer, and a first release layer is provided on one side of the substrate layer; an RFID layer is provided on the first release layer, and the RFID layer includes a chip die, an insulating layer, and a polygonal metal layer. The insulating layer is provided with through holes and is connected to the ports of the chip die, and the polygonal metal layer is electrically connected to the chip die through the through holes; an adhesive layer is provided on the RFID layer, a variable information layer is provided on the adhesive layer, and the variable information layer contains double-sided printed variable digits; a second release layer is provided on the variable information layer; and an anti-counterfeiting layer is provided on the surface of the second release layer, and the anti-counterfeiting layer includes a hollow structure and a one-time destruction mark.

[0004] Further, the shape of the polygonal metal layer is a symmetric polygon, and the polygonal metal layer is a composite structure of a copper layer, a nickel layer, and a gold layer.

[0005] Further, the anti-counterfeiting layer includes anti-detection lines, and the anti-detection lines are coplanar with the antenna of the RFID layer. When the anti-detection lines are broken, the radio frequency signal of the RFID tag is interrupted and a warning prompt is triggered.

[0006] Further, a partial glue removal layer is provided between the adhesive layer and the substrate layer, and the partial glue removal layer causes selective damage when the label is peeled off, exposing the anti-counterfeiting digits of the variable information layer.

[0007] Furthermore, the double-sided numbers of the variable information layer are symmetrically printed QR codes or digital codes, and the corresponding numbers on both sides are associated and verified through a cloud database.

[0008] A production process of the above-mentioned multi-layer RFID tag with removable and double-sided digital correspondence includes the following steps: S1, die-cutting on the substrate layer to form a first release layer; S2, forming a polygonal metal layer on the surface of the insulating layer by sputtering or electroplating, and connecting the ports of the chip die through through holes; S3, laminating the RFID layer, the adhesive layer and the variable information layer layer by layer through a hot pressing laminating machine; S4. A hollow structure of an anti-counterfeiting layer and a one-time destruction mark are printed on the surface of the variable information layer.

[0009] Furthermore, the hot pressing compound machine includes a hot pressing compound machine body, and the compound machine body includes an upper hot pressing roller and a lower hot pressing roller, the upper hot pressing roller and the lower hot pressing roller are arranged on the inner side of the compound machine body, and pressure regulating devices are arranged on the upper hot pressing roller and the lower hot pressing roller. A cooling roller and an air cooling device are arranged on the inner side of the compound machine body and at the position of the upper hot pressing roller and the lower hot pressing roller.

[0010] An application of a multi-layer RFID tag with peel-off properties and double-sided digital correspondence, comprising a cover body, and the tag is bonded to the inner side of the cover body by a structural adhesive; The RFID layer is arranged along the opening path of the cover body, remains intact when normally screwed, and breaks when pulled and damaged.

[0011] Furthermore, the bottle cap structure also includes a cap, a sealing cap and a cap body, the anti-counterfeiting layer is embedded in the cap, and when the bottle cap is pulled open, the anti-detection line is broken and the variable information layer is destroyed.

[0012] The present invention has the following beneficial effects: Active anti-tamper mechanism: The coplanar anti-detection line triggers chip self-check through impedance mutation, and uploads abnormal code to the cloud within 0.1 seconds to achieve real-time alarm; The local debonding layer is directionally broken when the label is removed, ensuring that 90% of the variable information layer is completely exposed, preventing hidden damage to the information layer.

[0013] Multimodal anti-counterfeiting verification: Double-sided symmetrical printed digital information is dynamically bound to the cloud database, and double-sided scanning and matching are required for verification, and the forgery tolerance rate is close to zero.

[0014] Integrated innovation of anti-counterfeiting bottle cap: RFID layers are arranged along the opening path, and normal twisting maintains complete functionality. Illegal pulling will simultaneously trigger antenna breakage, capsule rupture and digital blanking, realizing a strong anti-counterfeiting closed loop of "open and destroy". Description of the Drawings

[0015] Figure 1 This is an exploded view of the multi-layer RFID tag structure in the present invention; Figure 2 This is a schematic diagram of the cover body and the cap structure in the present invention; Figure 3 This is a schematic diagram of the internal structure of the cap in the present invention; Figure 4 This is a schematic diagram of the structure of the cap from another perspective in the present invention; Figure 5 This is a schematic diagram of the second release layer in the present invention; Figure 6 This is a schematic diagram of the connection of the structure of the hot pressing and laminating machine body in the present invention.

[0016] In the figure, 1, substrate layer; 2, first release layer; 3, RFID layer; 4, chip die; 5, insulating layer; 6, polygonal metal layer; 7, adhesive layer; 8, variable information layer; 9, second release layer; 10, anti-counterfeiting layer; 11, anti-detection line; 12, partial glue removal layer; 13, cover body; 14, RFID tag; 15, cap; 16, sealing cover; 17, hot pressing and laminating machine body; 18, upper hot pressing roller; 19, lower hot pressing roller; 20, pressure regulating device; 21, cooling roller; 22, air cooling device. Detailed Description of the Invention

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-5 , the embodiments of the present invention provide a technical solution: a multi-layer RFID tag with peelability and double-sided digital correspondence, including a substrate layer 1, and a first release layer 2 is provided on one side of the substrate layer 1.

[0019] A RFID layer 3 is provided on the first release layer 2. The RFID layer 3 includes a chip die 4, an insulating layer 5, and a polygonal metal layer 6. The insulating layer 5 is provided with through holes and is connected to the ports of the chip die 4. The polygonal metal layer 6 is electrically connected to the chip die 4 through the through holes.

[0020] An adhesive layer 7 is provided on the RFID layer 3, and a variable information layer 8 is provided on the adhesive layer 7. The variable information layer 8 contains double-sided printed variable digits.

[0021] A second release layer 9 is located on the variable information layer, and an anti-counterfeiting layer 10 is arranged on the surface of the second release layer. The anti-counterfeiting layer 10 includes a hollow structure and a one-time destruction mark.

[0022] Specifically, the polygonal metal layer 6 is in the shape of a symmetrical polygon, and the polygonal metal layer 6 is composed of at least one layer of metal. In the present embodiment, the polygonal metal layer 6 is a composite structure of a copper layer, a nickel layer and a gold layer.

[0023] In this embodiment, a symmetrical polygonal design is adopted to enhance the uniformity of the antenna radiation field and reduce directional attenuation, wherein the copper layer provides the main current path, the nickel layer prevents oxidation, and the gold layer ensures the reliability of chip welding.

[0024] Specifically, the anti-counterfeiting layer 10 further includes an anti-detection line 11, which is coplanarly arranged with the antenna of the RFID layer 3. When the anti-detection line 11 is broken, the radio frequency signal of the RFID tag 14 is interrupted and a warning prompt is triggered.

[0025] In this embodiment, the anti-detection line 11 and the RFID antenna are formed synchronously by laser etching, and the coplanar spacing is controlled within 0.5mm. When the external force causes the break, the antenna loop impedance suddenly changes, and the abnormal code is triggered by the self-test circuit built into the tag chip and uploaded to the cloud alarm system.

[0026] Specifically, a local debonding layer 12 is provided between the adhesive layer 7 and the substrate layer 1 , and the local debonding layer 12 is selectively destroyed when the label is peeled off, exposing the anti-counterfeiting digital number of the variable information layer.

[0027] In this embodiment, when peeling off, the stress is concentrated in the weakened area, so that more than 90% of the adhesive layer is broken, ensuring that the variable information layer is completely exposed.

[0028] Specifically, the double-sided numbers of the variable information layer 8 are symmetrically printed QR codes or digital codes, and the corresponding numbers on both sides are associated and verified through a cloud database.

[0029] An anti-counterfeiting bottle cap structure with a multi-layer RFID tag with a removable and double-sided digital correspondence, comprising a cap body 13, and an RFID tag 14 bonded to the inner side of the cap body 13 by a structural adhesive; The RFID layer 3 is arranged along the opening path of the cover body 15, remains intact when normally screwed, and breaks when pulled and damaged.

[0030] The present invention also includes the application of a multi-layer RFID tag with a removable and double-sided digital corresponding function, which is specifically applied to an anti-counterfeit bottle cap structure, and also includes: Specifically, the bottle cap structure includes a cap 15 , a sealing cap 16 and a cap body 13 . The anti-counterfeiting layer 10 is embedded in the cap 15 , and when the bottle cap is pulled open, the anti-detection line 11 breaks and destroys the variable information layer 8 .

[0031] A production process of a multi-layer RFID tag with peelability and double-sided digital correspondence, comprising the following steps: S1. Die-cut a first release layer 2 on the substrate layer 1; S2. Form a polygonal metal layer 6 on the surface of the insulating layer 5 by sputtering or electroplating process, and connect the ports of the chip die 4 through through-holes; S3. Layer-by-layer laminate the RFID layer 3, the adhesive layer 7, and the variable information layer 8 by a hot pressing laminator; S4. Print the hollow structure and the one-time destruction mark of the anti-counterfeiting layer 10 on the surface of the variable information layer.

[0032] The hot pressing temperature in S3 is controlled in three stages, the PET of the substrate layer 1 is 80 - 100 °C, the PU hot melt adhesive of the adhesive layer 7 is 120 - 130 °C, and the PVC of the anti-counterfeiting layer 10 is 60 - 70 °C; the lamination speed is 2 - 4 m / min.

[0033] A hot pressing laminator, comprising a hot pressing laminator body 17, the laminator body 17 includes an upper hot pressing roller 18 and a lower hot pressing roller 19, the upper hot pressing roller 18 and the lower hot pressing roller 19 are arranged inside the laminator body 17, pressure regulating devices 20 are arranged on both the upper hot pressing roller 18 and the lower hot pressing roller 19, and a cooling roller 21 and an air cooling device 22 are arranged inside the laminator body 17 at the positions of the upper hot pressing roller 18 and the lower hot pressing roller 19.

[0034] In this embodiment, the cooling roller 21 uses circulating water with a cold water temperature of 10 - 15 °C, and the air cooling wind speed is 8 - 12 m / s. It should be noted that during the lamination process of the multi-layer RFID tag, the stacked layers are first aligned, and then the RFID tag 14 is processed by pressing through the upper hot pressing roller 18 and the lower hot pressing roller.

[0035] In this embodiment, the RFID tag 14 uses an anti-detection electronic tag. Adopting the anti-detection electronic tag technical solution can ensure that the original information can be verified when the genuine product is unopened, and at the same time, while retaining the core data interaction function after opening, it forcibly triggers an anti-counterfeiting warning, effectively eliminating the risk of recycling and counterfeiting.

[0036] The above-disclosed preferred embodiments of the present invention are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A multi-layer RFID tag with peel-off and double-sided digital correspondence, characterized by: include A substrate layer (1), wherein a first release layer (2) is arranged on one side of the substrate layer (1); An RFID layer (3) is arranged on the first release layer (2), the RFID layer (3) comprising a chip die (4), an insulating layer (5) and a polygonal metal layer (6), the insulating layer (5) being provided with a through hole and connected to a port of the chip die (4), and the polygonal metal layer (6) being electrically connected to the chip die (4) via the through hole; An adhesive layer (7) is provided on the RFID layer (3), and a variable information layer (8) is provided on the adhesive layer (7), wherein the variable information layer (8) contains variable digital information printed on both sides; A second release layer (9) located on the variable information layer (8); And an anti-counterfeiting layer (10) arranged on the surface of the second release layer (9), wherein the anti-counterfeiting layer (10) comprises a hollow structure and a one-time destruction mark.

2. The multi-layer RFID tag with removable and double-sided digital correspondence according to claim 1, characterized in that: The shape of the polygonal metal layer (6) is a symmetrical polygon, and the polygonal metal layer (6) is a composite structure of a copper layer, a nickel layer and a gold layer.

3. The multi-layer RFID tag with removable and double-sided digital correspondence according to claim 1, characterized in that: The anti-counterfeiting layer (10) comprises an anti-detection line (11), and the anti-detection line (11) is arranged coplanar with the antenna of the RFID layer (3); when the anti-detection line (11) is broken, the radio frequency signal of the RFID tag is interrupted and a warning prompt is triggered.

4. The multi-layer RFID tag with removable and double-sided digital correspondence according to claim 1, characterized in that: A local debonding layer (12) is provided between the adhesive layer (7) and the substrate layer (1), and the local debonding layer (12) is selectively destroyed when the label is peeled off, thereby exposing the anti-counterfeiting digital number of the variable information layer (8).

5. The multi-layer RFID tag with removable and double-sided digital correspondence according to claim 1, characterized in that: The double-sided digital codes of the variable information layer (8) are symmetrically printed QR codes or digital codes, and the corresponding digital codes on both sides are associated and verified through a cloud database.

6. A production process for a multi-layer RFID tag with removable and double-sided digital correspondence according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, die-cutting a first release layer (2) on the substrate layer (1); S2, forming a polygonal metal layer (6) on the surface of the insulating layer (5) by sputtering or electroplating, and connecting the ports of the chip die (4) through through holes; S3, laminating the RFID layer (3), the adhesive layer (7), and the variable information layer (8) layer by layer through a hot pressing laminating machine; S4. Printing the hollow structure of the anti-counterfeiting layer (10) and the one-time destruction mark on the surface of the variable information layer (8).

7. The production process of a multi-layer RFID tag with removable and double-sided digital correspondence according to claim 6, characterized in that: The hot pressing compound machine comprises a hot pressing compound machine body (17), wherein the compound machine body (17) comprises an upper hot pressing roller (18) and a lower hot pressing roller (19), wherein the upper hot pressing roller (18) and the lower hot pressing roller (19) are arranged on the inner side of the compound machine body (17), and pressure regulating devices (20) are arranged on the upper hot pressing roller (18) and the lower hot pressing roller (19), and a cooling roller (21) and an air cooling device (22) are arranged on the inner side of the compound machine body (17) and at the positions of the upper hot pressing roller (18) and the lower hot pressing roller (19).

8. An application of the multi-layer RFID tag with removable and double-sided digital correspondence according to any one of claims 1 to 5, characterized in that: It comprises a cover body (13), wherein the label is bonded to the inner side of the cover body (13) by means of structural adhesive; The RFID layer (3) is arranged along the opening path of the cover body, remains intact when normally twisted, and breaks when pulled and damaged.

9. The use of the multi-layer RFID tag with removable and double-sided digital correspondence according to claim 8, characterized in that: The bottle cap structure further comprises a cap (15), a sealing cap (16) and a cap body (13); the anti-counterfeiting layer (8) is embedded in the cap (15); and when the bottle cap is pulled open, the anti-detection line (11) breaks and destroys the variable information layer (8).

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