Acoustic magnetic anti-theft label
By enhancing the adhesive layer thickness and resonant cavity shell design of the acousto-magnetic anti-theft tag, the problem of insufficient adhesive strength is solved, improving the tag's adhesion and peel resistance, and ensuring the anti-theft protection effect.
Patent Information
- Application Number
- CN202520072809.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-13
AI Technical Summary
Existing acousto-magnetic anti-theft tags have weak adhesive backing, making them easily damaged by external forces or torn off, thus affecting their anti-theft protection effect.
By increasing the thickness of the adhesive layer at the bottom of the acousto-magnetic anti-theft tag to over 0.5mm, combined with a high-hardness plastic resonant cavity shell and optimized resonant plate design, the adhesion and peel resistance are enhanced.
It effectively prevents acousto-magnetic anti-theft tags from being damaged by external force or easily torn off, ensuring the anti-theft protection effect of goods and reducing production costs.
Smart Images
Figure CN223897897U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-theft tag technology, and in particular to an acousto-magnetic anti-theft tag. Background Technology
[0002] Currently, the most common anti-theft technology used in supermarkets is acousto-magnetic tags, commonly known as "soft tags." The front can be printed with a deceptive barcode or manufacturer's logo, while the back has an adhesive backing. Internally, it contains a resonant plate and a biasing element, allowing it to be directly attached to merchandise for anti-theft protection. When a thief takes unpaid goods out of the store, the undemagnetized acousto-magnetic tag attached to the product will trigger an alarm when passing through the security gate. However, existing acousto-magnetic anti-theft tags suffer from weak adhesive strength, making them prone to peeling off due to external force or being easily torn off the product, severely impacting their anti-theft effectiveness. Utility Model Content
[0003] This invention provides an acousto-magnetic anti-theft tag to solve the technical problem of weak adhesive strength in existing acousto-magnetic anti-theft tags.
[0004] To solve the above-mentioned technical problems, this utility model provides an acousto-magnetic anti-theft tag, including an acousto-magnetic anti-theft tag body and an adhesive layer. The adhesive layer is disposed at the bottom of the acousto-magnetic anti-theft tag body, and the adhesive layer has an adhesive surface on the side facing away from the acousto-magnetic anti-theft tag body. The thickness of the adhesive layer is greater than or equal to 0.5 mm.
[0005] As a preferred embodiment, the thickness of the adhesive layer is 0.5 mm to 1.5 mm.
[0006] As a preferred embodiment, the acousto-magnetic anti-theft tag body includes a resonant cavity shell, a biasing component, and at least two resonant plates; the resonant cavity shell has a cavity inside, the resonant plates are disposed in the cavity, the adhesive layer is disposed at the bottom of the resonant cavity shell, and the biasing component is disposed between the resonant cavity shell and the adhesive layer.
[0007] As a preferred embodiment, the cross-sectional shape of the resonant cavity shell is elliptical or angular; wherein, the angular shape includes, but is not limited to, rectangle, rhombus, trapezoid and polygon.
[0008] As a preferred embodiment, the cross-sectional shape of the adhesive layer is the same as the cross-sectional shape of the resonant cavity shell, and the cross-sectional area of the adhesive layer is equal to the cross-sectional area of the resonant cavity shell.
[0009] As a preferred embodiment, the resonant cavity housing is made of high-hardness plastic; wherein, the high-hardness plastic is a plastic with a hardness higher than that of PS plastic.
[0010] As a preferred embodiment, the resonant cavity housing includes a resonant cavity upper shell and a resonant cavity bottom cover, the resonant cavity upper shell and the resonant cavity bottom cover are fixedly connected, and the cavity is formed between the resonant cavity upper shell and the resonant cavity bottom cover.
[0011] As a preferred embodiment, the adhesive surface is further provided with a peelable backing paper.
[0012] As a preferred embodiment, the number of resonant plates is 2 to 6, and at least two of the resonant plates are stacked in the height direction of the cavity.
[0013] As a preferred embodiment, the biasing element is a filamentary structure or a sheet-like structure.
[0014] Compared with the prior art, the beneficial effect of this utility model embodiment is that by limiting the thickness of the adhesive layer at the bottom of the acousto-magnetic anti-theft tag body to greater than or equal to 0.5mm, the adhesive layer is thick enough to have strong adhesion. When the acousto-magnetic anti-theft tag is pasted on the product, it can effectively prevent the acousto-magnetic anti-theft tag from peeling off the adhesive surface due to external force damage, or from being easily torn off the product, thus ensuring the anti-theft protection effect of the product. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of the acousto-magnetic anti-theft tag in an embodiment of this utility model;
[0016] Figure 2 This is an exploded view of a preferred embodiment of the acousto-magnetic anti-theft tag in this utility model;
[0017] Figure 3 This is an exploded view of another preferred embodiment of the acousto-magnetic anti-theft tag in this utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the resonant cavity shell with an elliptical cross-section in an embodiment of this utility model;
[0019] Figure 5 This is a schematic diagram of the structure of the resonant cavity shell with a hexagonal cross-sectional shape in an embodiment of this utility model;
[0020] Figure 6 This is a schematic diagram of the resonant cavity shell with a rectangular cross-sectional shape in an embodiment of this utility model;
[0021] The components include: 1. Acoustomagnetic anti-theft tag body; 2. Adhesive layer; 3. Resonant cavity upper shell; 4. Resonant sheet; 5. Resonant cavity bottom cover; 6. Offset component; and 7. Peelable backing paper. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] In the description of this application, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used herein are for illustrative purposes only and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0025] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this specification is for the purpose of describing specific embodiments only and is not intended to limit the utility model. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0026] Please see Figure 1This utility model provides an acousto-magnetic anti-theft tag, including an acousto-magnetic anti-theft tag body 1 and an adhesive layer 2. The adhesive layer 2 is disposed at the bottom of the acousto-magnetic anti-theft tag body 1. The adhesive layer 2 has an adhesive surface on the side facing away from the acousto-magnetic anti-theft tag body 1, and the thickness of the adhesive layer 2 is greater than or equal to 0.5 mm.
[0027] It is worth noting that, in order to manufacture acousto-magnetic anti-theft tags in a plate-like arrangement through die-cutting processes, the adhesive thickness of existing acousto-magnetic anti-theft tags is usually quite thin, generally not exceeding 0.2mm. Therefore, when acousto-magnetic anti-theft tags on the market are pasted onto goods, their adhesive strength is weak due to insufficient adhesive thickness, making them easy to peel off due to external force or to be easily torn off the goods. To address the technical problem of weak adhesive strength in existing acousto-magnetic anti-theft tags, this embodiment limits the thickness of the adhesive layer 2 at the bottom of the acousto-magnetic anti-theft tag body 1 to greater than or equal to 0.5 mm. It is understood that increasing the thickness of the adhesive layer 2 allows it to provide a larger contact area and stronger adhesion. By limiting the thickness of the adhesive layer 2 to greater than or equal to 0.5 mm, it is made sufficiently thick, resulting in strong adhesion when the acousto-magnetic anti-theft tag is pasted onto the product. This effectively prevents the acousto-magnetic anti-theft tag from peeling off the adhesive surface due to external force or being easily torn off the product, ensuring effective anti-theft protection.
[0028] It is worth noting that the acousto-magnetic anti-theft tag body 1 is a component used to trigger the anti-theft alarm. It has a built-in resonant plate 4 and a bias plate. When the acousto-magnetic anti-theft tag body 1 enters the alternating magnetic field (detection zone) generated by the acousto-magnetic anti-theft system, and the resonant frequency of the acousto-magnetic anti-theft tag body 1 is consistent with the carrier frequency in the alternating magnetic field, due to the magnetoelastic resonance effect, the resonant plate 4 in the acousto-magnetic anti-theft tag body 1 will generate a resonance signal under the action of the magnetic field provided by the bias plate. This signal is received by the receiving antenna of the acousto-magnetic anti-theft system, thereby detecting the presence of the acousto-magnetic anti-theft tag body 1 and playing the role of anti-theft alarm.
[0029] Furthermore, the adhesive layer 2 has an adhesive surface on the side facing away from the acousto-magnetic anti-theft tag body 1. This adhesive surface is used to stick to the surface of the anti-theft protected object, such as various goods in supermarkets.
[0030] As a preferred embodiment, the thickness of the adhesive layer 2 is 0.5mm to 1.5mm.
[0031] It is worth noting that while increasing the thickness of adhesive layer 2 can provide stronger adhesion, excessively thick adhesive layer 2 may result in uneven adhesion, thus affecting the adhesion effect of the acousto-magnetic anti-theft tag. Furthermore, an excessively thick adhesive layer 2 will also increase the production cost of the acousto-magnetic anti-theft tag. Therefore, in this embodiment, the thickness of adhesive layer 2 is preferably limited to 0.5mm to 1.5mm. For example, the thickness of adhesive layer 2 can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, etc. This embodiment does not impose a specific limitation, thus ensuring that the thickness of adhesive layer 2 is appropriate, providing strong adhesion and ensuring that the acousto-magnetic anti-theft tag has good tear resistance. At the same time, it avoids excessively thick adhesive layer 2, thereby ensuring the adhesion effect of the acousto-magnetic anti-theft tag and ensuring that the production cost of the acousto-magnetic anti-theft tag is not too high.
[0032] As a preferred embodiment, the acousto-magnetic anti-theft tag body 1 includes a resonant cavity shell, a biasing member 6, and at least two resonant plates 4; the resonant cavity shell has a cavity, the resonant plates 4 are disposed in the cavity, the adhesive layer 2 is disposed at the bottom of the resonant cavity shell, and the biasing member 6 is disposed between the resonant cavity shell and the adhesive layer 2.
[0033] Specifically, such as Figure 2 and Figure 3 As shown, the acousto-magnetic anti-theft tag body 1 in this embodiment adopts a design of a resonant cavity shell, a biasing member 6, and a resonant sheet 4. The resonant cavity shell has a cavity that can accommodate the resonant sheet 4. The resonant sheet 4 is disposed in the cavity, which makes the resonant sheet 4, which is enclosed in the cavity, very stable. The resonant cavity shell can provide good and reliable protection for the resonant sheet 4. In addition, the biasing member 6 is disposed between the resonant cavity shell and the adhesive layer 2, which can well ensure the bonding stability of the biasing member 6.
[0034] In this embodiment, the number of resonant plates 4 is at least two. It is understood that the number of resonant plates 4 has a certain impact on the alarm performance of the acousto-magnetic anti-theft tag. By setting the number of resonant plates 4 to at least two, this embodiment can ensure that the acousto-magnetic anti-theft tag has better alarm performance.
[0035] As a preferred embodiment, the cross-sectional shape of the resonant cavity shell is elliptical or angular; wherein, the angular shape includes, but is not limited to, rectangle, rhombus, trapezoid and polygon.
[0036] Specifically, to further improve the peel resistance of the acousto-magnetic anti-theft tag, this embodiment further limits the cross-sectional shape of the resonant cavity shell to elliptical or angular shapes, such as... Figure 4As shown, the cross-sectional shape of the resonant cavity shell is elliptical, as... Figure 5 As shown, the cross-sectional shape of the resonant cavity shell is hexagonal, such as... Figure 6 As shown, the cross-sectional shape of the resonant cavity shell is rectangular. It can be understood that by setting the shape of the resonant cavity shell to be elliptical or angular, the bottom area of the sealed portion of the resonant cavity shell can be increased. This results in a larger adhesive area between the acousto-magnetic anti-theft tag and the product when the tag is affixed, further improving the adhesion between the tag and the product, and consequently enhancing the tag's resistance to peeling.
[0037] As a preferred embodiment, the cross-sectional shape of the adhesive layer 2 is the same as the cross-sectional shape of the resonant cavity shell, and the cross-sectional area of the adhesive layer 2 is equal to the cross-sectional area of the resonant cavity shell.
[0038] Specifically, in this embodiment, by limiting the cross-sectional shape of the adhesive layer 2 to be the same as the cross-sectional shape of the resonant cavity shell, and the cross-sectional area of the adhesive layer 2 to be equal to the cross-sectional area of the resonant cavity shell, it is possible to ensure that any area at the bottom of the resonant cavity shell is covered with the adhesive layer 2, thereby maximizing the pasting area of the acousto-magnetic anti-theft tag and further improving the anti-peeling ability of the acousto-magnetic anti-theft tag.
[0039] As a preferred embodiment, the resonant cavity housing is made of high-hardness plastic; wherein, the high-hardness plastic is a plastic with a hardness higher than that of PS plastic.
[0040] Specifically, to further improve the peel resistance of the acousto-magnetic anti-theft tag, this embodiment further specifies that the material used to make the resonant cavity shell is a high-hardness plastic. The high-hardness plastic is a plastic with a hardness higher than that of PS plastic, such as PET plastic. It is worth noting that, after extensive research and experimentation, the applicant discovered that for resonant cavity shells of the same thickness, one type is made of PET plastic, with both the upper and lower resonant cavity shells being made of PET plastic; the other type is composed of a PS / PE upper resonant cavity shell and a PE / PET lower resonant cavity shell. In peel resistance tests, the resonant cavity shell made of PET plastic exhibits superior peel resistance. The advantage of using high-hardness plastic to make the resonant cavity shell is that it is less prone to deformation. When a thief attempts to forcibly peel off the acousto-magnetic anti-theft tag, the undeformed edges of the outer shell increase the difficulty of peeling, thus improving the peel resistance of the acousto-magnetic anti-theft tag.
[0041] As a preferred embodiment, the resonant cavity housing includes a resonant cavity upper shell 3 and a resonant cavity bottom cover 5, the resonant cavity upper shell 3 and the resonant cavity bottom cover 5 are fixedly connected, and the cavity is formed between the resonant cavity upper shell 3 and the resonant cavity bottom cover 5.
[0042] Specifically, in this embodiment, the resonant cavity housing is further composed of a resonant cavity upper shell 3 and a resonant cavity bottom cover 5. The resonant cavity upper shell 3 and the resonant cavity bottom cover 5 are fixedly connected and form a cavity inside for accommodating the resonant cavity.
[0043] In a preferred embodiment, the upper shell 3 and the bottom cover 5 of the resonant cavity have the same cross-sectional shape, and the cross-sectional shape of the upper shell 3 and the bottom cover 5 of the resonant cavity is elliptical or has an angular shape.
[0044] In a preferred embodiment, both the upper shell 3 and the bottom cover 5 of the resonant cavity are made of high-hardness plastic. For example, both the upper shell 3 and the bottom cover 5 of the resonant cavity are made of PET plastic, or the upper shell 3 and the bottom cover 5 of the resonant cavity are made of different high-hardness plastics. This embodiment does not make specific limitations here.
[0045] As a preferred embodiment, the adhesive surface is further provided with a peelable backing paper 7.
[0046] It is worth noting that in this embodiment, the adhesive surface of the adhesive layer 2 is also provided with a peelable backing paper 7. It can be understood that when the acoustomagnetic anti-theft tag is not in use, the peelable backing paper 7 can ensure that the adhesive surface of the adhesive layer is not contaminated by external oil, dust, moisture, etc., which would reduce the adhesive strength. When it is needed, the peelable backing paper 7 can be peeled off, and the adhesive surface can be pasted on the surface of the anti-theft protected object.
[0047] As a preferred embodiment, the number of resonant plates 4 is 2 to 6, and at least two of the resonant plates 4 are stacked in the height direction of the cavity.
[0048] Specifically, in this embodiment, the number of resonant plates 4 is further limited to 2 to 6, such as 2, 3, 4, 5 or 6. This embodiment does not make a specific limitation here, so as to ensure the alarm performance of the acousto-magnetic anti-theft tag and ensure that the detector of the existing acousto-magnetic anti-theft tag can effectively detect it at the predetermined safe alarm distance, while minimizing the production cost of the acousto-magnetic anti-theft tag.
[0049] As a preferred embodiment, the biasing element 6 is a filamentous structure or a sheet-like structure.
[0050] Specifically, in this embodiment, the biasing element 6 can be a biasing wire, such as... Figure 2 As shown, it can also be a bias plate, such as Figure 3 As shown in the figure, this embodiment is not specifically limited here.
[0051] The beneficial effects of the acousto-magnetic anti-theft tag provided in this embodiment are as follows: by limiting the thickness of the adhesive layer 2 at the bottom of the acousto-magnetic anti-theft tag body 1 to be greater than or equal to 0.5mm, the adhesive layer 2 is thick enough to have strong adhesion. When the acousto-magnetic anti-theft tag is pasted on the product, it can effectively prevent the acousto-magnetic anti-theft tag from peeling off the adhesive surface due to external force damage, or from being easily torn off the product, thus ensuring the anti-theft protection effect of the product.
[0052] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.
Claims
1. An acousto-magnetic anti-theft tag, characterized in that, It includes an acousto-magnetic anti-theft tag body and an adhesive layer. The adhesive layer is located at the bottom of the acousto-magnetic anti-theft tag body. The adhesive layer has an adhesive surface on the side facing away from the acousto-magnetic anti-theft tag body, and the thickness of the adhesive layer is greater than or equal to 0.5 mm.
2. The acousto-magnetic anti-theft tag as described in claim 1, characterized in that, The thickness of the adhesive layer is 0.5mm to 1.5mm.
3. The acousto-magnetic anti-theft tag as described in claim 1, characterized in that, The acousto-magnetic anti-theft tag body includes a resonant cavity shell, a biasing component, and at least two resonant plates; the resonant cavity shell has a cavity inside, the resonant plates are disposed in the cavity, the adhesive layer is disposed at the bottom of the resonant cavity shell, and the biasing component is disposed between the resonant cavity shell and the adhesive layer.
4. The acousto-magnetic anti-theft tag as described in claim 3, characterized in that, The cross-sectional shape of the resonant cavity shell is elliptical or angular; wherein the angular shape includes, but is not limited to, rectangle, rhombus, trapezoid and polygon.
5. The acousto-magnetic anti-theft tag as described in claim 3 or 4, characterized in that, The cross-sectional shape of the adhesive layer is the same as the cross-sectional shape of the resonant cavity shell, and the cross-sectional area of the adhesive layer is equal to the cross-sectional area of the resonant cavity shell.
6. The acousto-magnetic anti-theft tag as described in claim 3, characterized in that, The resonant cavity housing is made of high-hardness plastic; wherein, the high-hardness plastic is a plastic with a hardness higher than that of PS plastic.
7. The acousto-magnetic anti-theft tag as described in claim 3 or 6, characterized in that, The resonant cavity housing includes a resonant cavity upper shell and a resonant cavity bottom cover. The resonant cavity upper shell and the resonant cavity bottom cover are fixedly connected, and the cavity is formed between the resonant cavity upper shell and the resonant cavity bottom cover.
8. The acousto-magnetic anti-theft tag as described in claim 1, characterized in that, The adhesive surface is also provided with a peelable backing paper.
9. The acousto-magnetic anti-theft tag as described in claim 3, characterized in that, The number of resonant plates is 2 to 6, and at least two of the resonant plates are stacked in the height direction of the cavity.
10. The acousto-magnetic anti-theft tag as described in claim 3, characterized in that, The biasing element is a filamentous structure or a sheet-like structure.