RFID antenna
By designing an RFID antenna structure with a fragile layer and silicon carbide film, the problems of existing RFID tag antennas being difficult to break and anti-counterfeiting are solved. This enables easy peeling and directional breaking, ensuring antenna damage and improving anti-counterfeiting effectiveness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-17
AI Technical Summary
Existing RFID tag antennas are difficult to break in one go and are easily damaged during transportation, making them ineffective in preventing counterfeiting.
An RFID antenna structure comprising release paper, a fragile layer, and an antenna layer was designed. The fragile layer has a fragile line and an extension, and can be easily peeled off through a clearance groove. Combined with a silicon carbide film and a protective layer, the fragility and anti-counterfeiting effects are improved.
It enables convenient lifting and directional breaking of RFID antennas, ensuring complete damage to the antenna upon lifting, avoiding damage during transportation, and achieving anti-counterfeiting effect.
Smart Images
Figure CN224006129U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of antenna technology, and specifically relates to an RFID antenna. Background Technology
[0002] An RFID tag antenna is a transponder antenna for RFID electronic tags. It is a type of communication induction antenna and is generally used with a chip to form a complete RFID electronic tag transponder. Due to differences in materials and manufacturing processes, RFID tag antennas are divided into several types, such as metal etched antennas, printed antennas, copper-plated antennas, and die-cut antennas.
[0003] RFID tag antennas, as data carriers, serve the functions of identification, item tracking, and information collection. By attaching RFID tag antennas to products, they identify specific items. However, existing RFID tag antennas are not easily damaged, allowing them to be reattached to counterfeit products for resale, thus failing to provide effective anti-counterfeiting protection.
[0004] While existing technologies include designs with serrated edges and fragile lines on the edges of RFID tag antennas, these designs present challenges. Because RFID tag antennas are typically adhered to objects with adhesive, they adhere tightly to the surface during attachment, making them difficult to peel off. Furthermore, if the adhesive is weak, the serrated edges can easily break or tear during transport, further complicating removal. Conversely, if the adhesive is too strong, the stress points on the serrated edges may tear without causing the main antenna body to tear. Additionally, it's difficult to control the direction of fragility using the serrated edges, making it impossible to guarantee that most of the antenna can be peeled off or torn in one go. Utility Model Content
[0005] Therefore, the purpose of this utility model is to provide an RFID antenna that addresses the problem of the lack of a convenient and fragile RFID antenna in the prior art.
[0006] The RFID antenna proposed in this utility model includes release paper, a fragile layer disposed on the release paper, and an antenna layer disposed on the fragile layer. An RFID antenna is disposed on the antenna layer. An extension portion extends outward from one side of the release paper and the fragile layer. An avoidance groove is provided on the extension portion. Two symmetrically arranged fragile lines are provided on the fragile layer. The fragile lines divide the fragile layer into a main body portion connected to the extension portion and a separate portion not connected to the extension portion.
[0007] The aforementioned RFID antenna, by incorporating release paper and an antenna layer on the release paper, allows the antenna layer to adhere to the product after the release paper is removed, thus achieving the RFID antenna's identification function. Furthermore, the inclusion of a fragile layer ensures that the RFID antenna breaks when removed from the label, thereby achieving the anti-counterfeiting purpose. Specifically, the fragile layer and the outward extension of the release paper, with a relief groove on the extension, allow the RFID antenna to be easily peeled off by inserting a finger into the relief groove when attached to the product, making removal easier. Because the antenna is positioned on the inside, compared to the serrated peel-off point on the outside, it is more resistant to damage caused by external friction during transport. In addition, the larger extension provides a larger stress area when peeling off the RFID antenna, preventing breakage of the extension and ensuring the antenna can be easily removed. Furthermore, because the fragile layer is divided into a main body and a secondary body by a fragile line, and the main body is connected to the extension, when the RFID antenna is lifted through the extension, the RFID antenna will break along the fragile line, achieving directional breakage of the RFID antenna and ensuring complete damage to the RFID antenna to achieve the purpose of anti-counterfeiting. Therefore, this utility model solves the problem of the lack of a convenient and fragile RFID antenna in the prior art.
[0008] In addition, the RFID antenna proposed according to this utility model may also have the following additional technical features:
[0009] Preferably, the cross-sectional area of the main body gradually increases from one end near the extension to the other end.
[0010] Preferably, the fragile layer has a plurality of micropores, and the plurality of micropores are arranged in a straight line to form the fragile line.
[0011] Preferably, the fragile line includes multiple horizontal lines and multiple vertical lines, which are interconnected, such that the fragile layer forms a main body and multiple sub-parts, and the area of the main body is greater than the sum of the areas of the multiple sub-parts.
[0012] Preferably, the fragile layer is provided with adhesive, and the adhesive on the main body is less viscous than the adhesive on the separate parts.
[0013] Preferably, the antenna layer is provided with linearly distributed silicon carbide thin films, the positions of which coincide with the positions of the fragile wires.
[0014] Preferably, the RFID antenna further includes a protective layer disposed on the antenna layer, and the silicon carbide film is located between the protective layer and the antenna layer.
[0015] Preferably, the RFID antenna further includes a reinforcing layer disposed on the release paper, the reinforcing layer being located between the fragile layer and the release paper, and the reinforcing layer also having the extension portion and a clearance groove disposed on the extension portion.
[0016] Preferably, the ratio of the thickness of the silicon carbide thin film to the thickness of the antenna layer is greater than a preset value.
[0017] Preferably, the centrifugal paper is coated with silicone oil, and the silicone oil concentration in the area of the release paper corresponding to the main body is different from the silicone oil concentration in the area of the release paper corresponding to the split part. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of an RFID antenna proposed in one embodiment of the present invention;
[0019] Figure 2 This is a schematic diagram of the reinforcing layer structure proposed in one embodiment of the present invention;
[0020] Figure 3 This is a schematic diagram of the reinforcing layer structure proposed in one embodiment of the present invention;
[0021] Figure 4 This is a schematic diagram of the antenna layer structure proposed in one embodiment of the present invention;
[0022] Explanation of key component symbols:
[0023] Release paper 10 fragile layer 20 Antenna layer 30 extension 21 clearance slot 22 fragile thread 23 Main body 24 Split body part 25 micropores 26 Horizontal line 231 Vertical section 232 silicon carbide thin film 40 protective layer 50 Reinforcement layer 60
[0024] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation
[0025] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.
[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0028] Please see Figures 1 to 4 The image shows an RFID antenna according to an embodiment of the present invention, comprising release paper 10, a fragile layer 20 disposed on the release paper 10, and an antenna layer 30 disposed on the fragile layer 20, wherein:
[0029] An RFID antenna is provided on the antenna layer 30. An extension 21 extends outward from one side of the release paper 10 and the fragile layer 20. An avoidance groove 22 is provided on the extension 21. Two symmetrically arranged fragile lines 23 are provided on the fragile layer 20. The fragile lines 23 divide the fragile layer 20 into a main body 24 connected to the extension 21 and a separate part 25 not connected to the extension 21.
[0030] Understandably, by setting the release paper 10 and the antenna layer 30 on the release paper 10, the antenna layer 30 can be adhered to the product after the release paper 10 is peeled off, realizing the identification function of the RFID antenna. Furthermore, by setting the fragile layer 20, the RFID antenna breaks when it is peeled off the label, thus achieving the purpose of anti-counterfeiting. Specifically, the fragile layer 20 and the extension portion 21 extending outward from the release paper 10, with a relief groove 22 on the extension portion 21, allow the RFID antenna to be easily peeled off by inserting a finger into the relief groove 22 when it is attached to the product, making it easier to remove. Since the RFID antenna is peeled off from the inside, compared to the serrated peeling point on the outside, it is more likely to avoid damage caused by external friction during transport. In addition, the larger extension portion 21 also provides a larger force-bearing area when peeling off the RFID antenna, preventing the extension portion 21 from breaking and making the RFID antenna difficult to peel off. Furthermore, since the fragile layer 20 is divided into a main body 24 and a split part 25 by a fragile line 23, and the main body 24 is connected to the extension part 21, when the RFID antenna is lifted through the extension part 21, the RFID antenna will break along the fragile line 23, achieving directional breakage of the RFID antenna and ensuring complete damage to the RFID antenna to achieve the purpose of anti-counterfeiting. Therefore, this utility model solves the problem of the lack of a convenient and fragile RFID antenna in the prior art.
[0031] Specifically, the cross-sectional area of the main body 24 gradually increases from one end near the extension 21 to the other. In practice, by adjusting the shape of the main body 24, the contact area between the main body 24 and the extension 21 is made smaller and then gradually increased. This reduces the adhesive force required to peel off the RFID antenna through the extension 21, making it easier to peel off. As the peeling process progresses, the area of the main body 24 gradually increases, ensuring that most of the RFID antenna is peeled off or damaged. This reduces the difficulty of peeling off the RFID antenna while ensuring that damage after peeling achieves an anti-counterfeiting effect. Thus, a convenient and fragile RFID antenna is achieved.
[0032] Furthermore, the fragile layer 20 is provided with multiple micropores 26, which are arranged in a straight line to form a fragile line 23. In specific implementation, the fragile line 23 can be formed by cutting grooves, thereby realizing the structure of the main body 24 and the split part 25 of the fragile layer 20 and achieving the directional fragile effect of the fragile layer 20. Alternatively, the fragile line 23 can be formed by grooves of multiple equidistantly distributed micropores 26 arranged in a straight line. By setting the fragile line 23 with micropores 26, the overall structural strength of the fragile layer 20 can be better guaranteed than that of grooves, making it less prone to damage when subjected to external friction and impact. The fragile layer 20 is only easily broken along the micropores 26 when subjected to directional lifting force.
[0033] Specifically, the fragile line 23 includes multiple horizontal lines 231 and multiple vertical lines 232, which are interconnected, forming a main body 24 and multiple sub-parts 25 in the fragile layer 20. The area of the main body 24 is larger than the sum of the areas of the sub-parts 25. In practical implementation, various types of fragile lines 23 with different distributions can be set, dividing the fragile layer 20 into main bodies 24 and sub-parts 25 of different shapes. This allows the fragile layer 20 to be adjusted reasonably according to the distribution of the antenna layer 30, ensuring that when the RFID antenna is lifted, specific areas and most of it will be damaged, thereby achieving an anti-counterfeiting effect.
[0034] Additionally, the fragile layer 20 is coated with adhesive, and the adhesive on the main body 24 is less viscous than the adhesive on the split part 25. In practical implementation, by using adhesives with different viscosities, the forces exerted on different parts of the RFID antenna are different when it is lifted. This difference in forces between adjacent areas makes it easier for different areas of the RFID antenna to separate and be damaged.
[0035] Specifically, the antenna layer 30 has linearly distributed silicon carbide thin films 40, the positions of which coincide with the positions of the fragile wires 23. Since the antennas in the antenna layer 30 are typically made of copper foil, and copper foil is highly ductile and therefore difficult to tear, tearing may result in micron-level necking rather than a complete break, thus preserving the antenna's original function and preventing damage. However, by using silicon carbide thin films 40, due to their inherent properties, they are brittle and easily broken, leading to stress concentration at these points. This causes greater shear force on the copper foil at these points, making it easier to break. Furthermore, the hygroscopic nature of silicon carbide makes oxidation more likely at the breakage point, further enhancing the anti-counterfeiting effect of RFID antenna damage.
[0036] Additionally, the RFID antenna also includes a protective layer 50 disposed on the antenna layer 30, with a silicon carbide film 40 located between the protective layer 50 and the antenna layer 30. In practical implementation, to prevent damage to the silicon carbide film 40 and the antenna from external friction and collisions, and to ensure the normal operation of the RFID antenna, a protective layer 50 is provided to protect the interior of the RFID antenna. Furthermore, product information can also be marked on the protective layer 50, serving the function of a paper label.
[0037] Specifically, the RFID antenna also includes a reinforcing layer 60 disposed on the release paper 10. The reinforcing layer 60 is located between the fragile layer 20 and the release paper 10. The reinforcing layer 60 also has an extension portion 21 and a relief groove 22 disposed on the extension portion 21. In practical implementation, by adding the reinforcing layer 60, when the RFID antenna is adhered to the object, it adheres to the object through the reinforcing layer 60, rather than the fragile layer 20 directly adhering to the object. This avoids the fragile layer 20 from separating its main body 24 and separate parts 25 due to friction caused by changes in the shape of the back of the object, thus preventing damage to the RFID antenna. This ensures the normal use of the RFID antenna and prevents breakage when the RFID antenna is peeled off.
[0038] Furthermore, the ratio of the thickness of the silicon carbide thin film 40 to the thickness of the antenna layer 30 is greater than a preset value. In specific implementations, the ratio of the thickness of the silicon carbide thin film 40 to the thickness of the antenna copper foil needs to be greater than 0.05 so that when the silicon carbide thin film 40 breaks, it can generate sufficient shear force to destroy the antenna copper foil.
[0039] Specifically, the release paper is coated with silicone oil, and the concentration of silicone oil on the release paper 10 corresponding to the main body 24 is different from the concentration on the release paper 10 corresponding to the split part 25. The silicone oil makes it easier to separate the release paper 10 from the reinforcing layer 60 and the fragile layer 20. Furthermore, by using silicone oil of different concentrations according to the different adhesion of the main body 24 and the split part 25, the difference in force experienced by the main body 24 and the split part 25 when the RFID antenna is lifted is enhanced, making the RFID antenna more easily damaged when lifted.
[0040] In summary, the RFID antenna in the above embodiments of this utility model, by setting release paper 10 and antenna layer 30 on release paper 10, allows antenna layer 30 to be adhered to the product after the release paper 10 is peeled off, thus realizing the identification function of the RFID antenna. Furthermore, by setting a fragile layer 20, the RFID antenna breaks when it is peeled off the label, thereby achieving the purpose of anti-counterfeiting. Specifically, the fragile layer 20 and the extension portion 21 extending outward from the release paper 10, with a relief groove 22 on the extension portion 21, allow the RFID antenna to be easily peeled off by inserting a finger into the relief groove 22 when it is attached to the product, making it easier to remove. Since the RFID antenna is peeled off from the inside, compared to the serrated peeling point on the outside, it is more likely to be damaged by external friction during transport. In addition, the larger extension portion 21 also provides a larger force-bearing area when the RFID antenna is peeled off, preventing the extension portion 21 from breaking and making the RFID antenna difficult to peel off. Furthermore, since the fragile layer 20 is divided into a main body 24 and a split part 25 by a fragile line 23, and the main body 24 is connected to the extension part 21, when the RFID antenna is lifted through the extension part 21, the RFID antenna will break along the fragile line 23, achieving directional breakage of the RFID antenna and ensuring complete damage to the RFID antenna to achieve the purpose of anti-counterfeiting. Therefore, this utility model solves the problem of the lack of a convenient and fragile RFID antenna in the prior art.
[0041] 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 the present invention. 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.
[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An RFID antenna, characterized by, The application relates to an RFID antenna, which comprises a release paper, a breakable layer arranged on the release paper, and an antenna layer arranged on the breakable layer, wherein the antenna layer is provided with an RFID antenna, the release paper and the breakable layer are outwardly extended with an extension part on one side, the extension part is provided with a avoiding slot, the breakable layer is provided with two symmetrical breakable lines, and the breakable lines divide the breakable layer into a main body part connected with the extension part and a separate part not connected with the extension part.
2. The RFID antenna of claim 1, wherein, The cross-sectional area of the main body part gradually increases from one end to the other end of the extension part.
3. The RFID antenna of claim 1, wherein, The breakable layer is provided with a plurality of micropores, and the micropores are arranged in a straight line to form the breakable lines.
4. The RFID antenna of claim 1, wherein, The breakable lines comprise a plurality of horizontal line parts and a plurality of vertical line parts, and the horizontal line parts and the vertical line parts are connected with each other, so that the breakable layer forms the main body part and the separate parts, and the area of the main body part is greater than the sum of the areas of the separate parts.
5. The RFID antenna of claim 1, wherein, The breakable layer is provided with glue, and the adhesion of the glue on the main body part is less than that on the separate parts.
6. The RFID antenna of claim 1, wherein, The antenna layer is provided with a linearly distributed silicon carbide film, and the position of the silicon carbide film coincides with that of the breakable lines.
7. The RFID antenna of claim 6, wherein, The RFID antenna further comprises a protective layer arranged on the antenna layer, and the silicon carbide film is located between the protective layer and the antenna layer.
8. The RFID antenna of claim 1, wherein, The RFID antenna further comprises a reinforcing layer arranged on the release paper, and the reinforcing layer is located between the breakable layer and the release paper, and the reinforcing layer is also provided with the extension part and the avoiding slot arranged on the extension part.
9. The RFID antenna of claim 7, wherein, The ratio of the thickness of the silicon carbide film to the thickness of the antenna layer is greater than a preset value.
10. The RFID antenna of claim 5, wherein, The release paper is coated with silicon oil, and the silicon oil concentration of the area corresponding to the main body part on the release paper is inconsistent with that of the area corresponding to the separate parts on the release paper.