An electronic plastic seal with built-in non-reproducible RFID chip
By employing a three-sided locking and locking structure and a dual fixing method with connecting bolts, the problems of weak anti-tampering capability and fixed length of plastic seals are solved, resulting in a highly secure, convenient, and stable electronic plastic seal suitable for modern logistics and goods supervision.
Patent Information
- Application Number
- CN202521745479.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-15
AI Technical Summary
Existing plastic seals have weak anti-tampering capabilities, are easily damaged or counterfeited, and cannot meet high security requirements. Furthermore, the fixed length of the locking strip cannot adapt to different sealing needs, making operation cumbersome; when the hardness is high, it is not easy to bend and is prone to breakage.
It adopts a three-sided locking tooth and corresponding snapping tooth interlocking structure, combined with a dual fixing method of connecting bolts and buckles. The locking strip and connecting block are connected by threads. The plastic connecting bolts and auxiliary snapping block design achieve a stable connection, and it has a built-in non-copyable RFID chip.
It significantly enhances the tensile strength and tamper resistance of the seal, improves the ease of installation and structural stability of the locking strip, adapts to different length requirements, reduces operational hassles, improves information storage and traceability capabilities, and enhances the security and reliability of the seal.
Smart Images

Figure CN224676857U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electronic plastic seal technology, specifically an electronic plastic seal with a built-in non-copyable RFID chip. Background Technology
[0002] In modern logistics, warehousing, transportation, and the supervision of various goods, seals play a crucial role as a key tool to ensure the integrity of goods and prevent unauthorized opening or tampering. This is especially true in today's booming globalized trade, where goods frequently move between different regions and modes of transport, placing extremely high demands on the security, reliability, and traceability of seals. Electronic plastic seals, with their advantages of low cost, easy installation, and high flexibility, are gradually becoming a powerful alternative to traditional metal seals and are widely used in many industries. With the rise of IoT technology, integrating RFID (Radio Frequency Identification) chips into electronic plastic seals to achieve remote monitoring and information management of seal status has become an important development trend in this field. Through RFID chips, information such as the time, location, and operator of the seal can be easily recorded, greatly improving the efficiency and accuracy of goods supervision. Traditional plastic seals are mostly simple mechanical structures, consisting of a serrated plastic strip and a plastic opening with a flexible snap. In use, the plastic strip is threaded through the opening, and the serrations and snaps engage to lock the seal. These seals are inexpensive and simple in structure, and are used in some scenarios where security requirements are not high, such as ordinary package bundling and cargo labeling in small warehouses.
[0003] However, existing technologies rely solely on simple physical interlocking between the plastic strip and the plastic opening, resulting in weak tamper resistance and susceptibility to damage or counterfeiting. This makes them unsuitable for high-security scenarios. Furthermore, some RFID electronic plastic seals have their plastic shell and lock strip molded as a single injection unit. When different lengths of lock strips are required, shorter strips cannot meet the needs of long-distance sealing, while longer strips require the excess portion to be cut off after sealing, making the operation cumbersome. Moreover, lock strips with higher rigidity are difficult to bend and are prone to breakage when bent and passed into the lock cylinder for sealing. Utility Model Content
[0004] To overcome the above-mentioned defects, this utility model provides an electronic plastic seal with a built-in non-copyable RFID chip. This solves the problem that the existing plastic strip and plastic opening rely only on simple physical interlocking, which has weak anti-tampering ability, is easily damaged or counterfeited, and cannot meet the needs of high security scenarios. In addition, some RFID electronic plastic seals have the plastic shell and locking strip molded as one piece. When different lengths of locking strips are required, the short ones cannot meet the needs of long-distance sealing, and the long ones need to be cut off after sealing, which is troublesome. Moreover, the locking strip with high rigidity is not easy to bend when it is passed into the lock cylinder for sealing after bending, and it is also easy to break.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an electronic plastic seal with a built-in non-copyable RFID chip, comprising a plastic substrate, a connecting block fixedly connected to the outer side of the plastic substrate, a locking strip snapped onto the inner side of the connecting block, a connecting bolt threaded between the locking strip and the connecting block, a slot for cooperating with the locking strip being formed in the plastic substrate, three locking teeth being formed in the slot, and locking teeth for cooperating with the three locking teeth being formed on the top and sides of the locking strip.
[0006] By adopting the above technical solution, the interlocking structure of the three-sided locking teeth and corresponding locking teeth forms a firm restraint on the locking strip from three directions, greatly improving the tensile strength and tamper resistance of the seal, effectively preventing the locking strip from loosening or being forcibly pulled open. The snap-fit connection between the locking strip and the connecting block, combined with the threaded fixing of the connecting bolts, ensures both the convenience of installation and the stability of the overall structure, ensuring that the seal can maintain a reliable sealing state even in complex environments. At the same time, the dual fixing method of connecting bolts and snap-fits ensures the convenience of installing the locking strip, and the threaded connection strengthens the structural stability, preventing the locking strip from loosening and falling off during use.
[0007] Optionally, the connecting bolt is made of plastic, and an auxiliary locking block is fixedly connected to one end of the connecting bolt.
[0008] By adopting the above technical solution, the plastic connecting bolts are adapted to the overall plastic structure, reducing the loss caused by the contact of different materials. The auxiliary locking block facilitates the application of force, making the bolt tightening process more labor-saving and efficient.
[0009] Optionally, a splitting tooth is provided between the auxiliary locking block and the connecting bolt.
[0010] By adopting the above technical solution, the splitting teeth can separate the auxiliary locking block from the connecting bolt after they are connected in place, preventing the auxiliary locking block from becoming a fulcrum for prying the connecting bolt, making the connecting bolt difficult to remove, and greatly improving the security of the lead seal.
[0011] Optionally, a chip is embedded within the plastic substrate.
[0012] By adopting the above technical solution, the chip inside the plastic substrate can achieve information storage and traceability.
[0013] Optionally, the plastic substrate has marking areas at both ends.
[0014] By adopting the above technical solution, the marking area can intuitively display relevant information about the seal, making it convenient for identification and management.
[0015] Optionally, the connecting block has a connecting groove for use with the locking strip and the connecting bolt.
[0016] By adopting the above technical solution, the connecting groove provides precise installation space for the locking strip and connecting bolts, ensuring the stability of the connection structure.
[0017] Optionally, the end of the connecting bolt is located inside the connecting groove.
[0018] By adopting the above technical solution, the connecting bolts can be prevented from being unscrewed.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: The interlocking structure of the three-sided locking teeth and corresponding locking teeth forms a firm restraint from three directions, significantly enhancing the tensile strength and anti-tampering ability. The splitting teeth between the connecting bolt and the auxiliary locking block can break the auxiliary locking block after it is connected in place, preventing it from becoming a prying fulcrum and making it difficult to remove the connecting bolt. This double protection greatly improves the security of the lead seal. At the same time, the various structures work together to ensure that the seal maintains a reliable sealing state in complex environments. The appropriate length of the locking strip can be selected according to the actual blocking needs, adapting to different size scenarios and improving the flexibility of use. The dual connection method of buckle connection and threaded fixation ensures both convenient installation and enhanced structural stability. The connecting groove provides precise installation space, and the plastic connecting bolts reduce contact loss between different materials. The chip enables information storage and traceability, and the identification area intuitively displays relevant information for easy identification and management, taking into account both ease of operation and practical functions. The plastic connecting bolts are adapted to the overall plastic structure, reducing wear caused by contact between different materials. The auxiliary locking block facilitates force application, making the bolt tightening process more effortless and efficient. The splitting teeth allow the auxiliary locking block to separate from the connecting bolt after the connection is in place, preventing the auxiliary locking block from becoming a fulcrum for prying the connecting bolt and making it difficult to remove the connecting bolt easily, greatly improving the security of the lead seal. The chip inside the plastic substrate enables information storage and traceability, and the marking area can intuitively display relevant information about the seal for easy identification and management. The connecting groove provides precise installation space for the locking strip and connecting bolt, ensuring the stability of the connection structure. Attached Figure Description
[0020] Figure 1 This is a first-view schematic diagram of the overall structure of this utility model; Figure 2 This is a second-view schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the disassembled structure of this utility model; Figure 4 For the present utility model Figure 2 A magnified view of a portion of point A in the middle; Figure 5 For the present utility model Figure 3 A magnified view of the partial effect at point B in the middle.
[0021] In the diagram: 1. Plastic substrate; 2. Connecting block; 3. Locking strip; 4. Slot; 5. Marking area; 6. Connecting bolt; 7. Auxiliary locking block; 8. Splitting teeth; 9. Connecting groove. Detailed Implementation
[0022] The technical solution of this patent will be further described in detail below with reference to specific embodiments. Example
[0023] like Figures 1-5 As shown, this utility model provides a technical solution: An electronic plastic seal with a built-in non-copyable RFID chip includes a plastic substrate 1, a connecting block 2 fixedly connected to the outside of the plastic substrate 1, a locking strip 3 snapped to the inside of the connecting block 2, a connecting bolt 6 threaded between the locking strip 3 and the connecting block 2, a slot 4 for cooperating with the locking strip 3 is opened in the plastic substrate 1, a three-sided locking tooth is opened in the slot 4, and a locking tooth for cooperating with the three-sided locking tooth is opened on the top and sides of the locking strip 3. Specifically, during use, select a locking strip 3 of appropriate length according to the actual sealing requirements, and initially fix it by snapping it with the connecting block 2. Then, tighten the locking strip 3 and the connecting block 2 with the connecting bolts 6 to ensure that the connection between the locking strip 3 and the plastic substrate 1 is stable. Then, wrap the locking strip 3 around the object to be sealed, align its end with the slot 4 of the plastic substrate 1 and insert it so that the three locking teeth in the slot 4 accurately engage with the locking teeth on the top and sides of the locking strip 3 to complete the overall sealing operation. Through the interlocking structure of the three-sided locking teeth and corresponding locking teeth, the locking strip 3 is firmly bound from three directions, which greatly improves the tensile strength and anti-tampering ability of the seal, effectively preventing the locking strip 3 from loosening or being forcibly pulled open. The snap connection between the locking strip 3 and the connecting block 2, combined with the threaded fixation of the connecting bolt 6, ensures both the convenience of installation and the stability of the overall structure, ensuring that the seal can maintain a reliable sealing state even in complex environments. At the same time, the dual fixing method of the connecting bolt 6 and the snap not only ensures the convenience of installation of the locking strip 3, but also strengthens the structural stability through the threaded connection, preventing the locking strip 3 from loosening and falling off during use. Example
[0024] like Figures 3-5 As shown, the connecting bolt 6 is made of plastic. An auxiliary locking block 7 is fixedly connected to one end of the connecting bolt 6. A splitting tooth 8 is provided between the auxiliary locking block 7 and the connecting bolt 6. A chip is embedded in the plastic substrate 1. Identification areas 5 are provided at both ends of the plastic substrate 1. A connecting groove 9 is provided in the connecting block 2 to cooperate with the locking strip 3 and the connecting bolt 6. The end of the connecting bolt 6 is located inside the connecting groove 9. Specifically, when fixing the locking strip 3 to the connecting block 2, the plastic connecting bolt 6 is aligned with the connecting groove 9 in the connecting block 2. With the help of the auxiliary locking block 7, the connecting bolt 6 is screwed into the connecting groove 9 more easily until it is connected in place. Then, the auxiliary locking block 7 is broken off by the splitting teeth 8 between the connecting bolt 6 and the auxiliary locking block 7 to separate it from the connecting bolt 6, thus completing the fixing of the locking strip 3 to the connecting block 2. At the same time, the chip in the plastic substrate 1 can record relevant information, and the marking areas 5 at both ends can provide clear markings. The plastic connecting bolt 6 adapts to the overall plastic structure, reducing wear caused by contact between different materials. The auxiliary locking block 7 facilitates force application, making the screwing-in process of the connecting bolt 6 more effortless and efficient. The splitting teeth 8 can separate the auxiliary locking block 7 from the connecting bolt 6 after the connection is in place, preventing the auxiliary locking block 7 from becoming a fulcrum for prying the connecting bolt 6, making the connecting bolt 6 difficult to remove, greatly improving the security of the lead seal. The chip in the plastic substrate 1 can realize information storage and traceability. The marking area 5 can intuitively display the relevant information of the seal, facilitating identification and management. The connecting groove 9 provides a precise installation space for the locking strip 3 and the connecting bolt 6, ensuring the stability of the connection structure. The working principle of this utility model is as follows: First, select a lock strip 3 of appropriate length according to the actual blocking requirements. First, fix it to the connecting block 2 through the buckle connection. Then, use the plastic connecting bolt 6 to align with the connecting groove 9 in the connecting block 2. With the help of the auxiliary buckle 7, screw it into the connecting groove 9 to achieve thread fastening and form a double connection to ensure the stability of the connection between the lock strip 3 and the plastic base plate 1. Secondly, after wrapping the locking strip 3 around the object to be sealed, insert its end into the slot 4 of the plastic substrate 1. The three locking teeth in the slot 4 precisely engage with the top and side teeth of the locking strip 3, forming a firm restraint from three directions, achieving overall sealing and greatly improving the tensile strength and tamper resistance of the seal. It is worth mentioning that the splitting teeth 8 between the connecting bolt 6 and the auxiliary locking block 7 play a key role. After the connecting bolt 6 is in place, the auxiliary locking block 7 can be broken off and separated by the splitting teeth 8, preventing it from becoming a fulcrum for prying the connecting bolt 6, making the connecting bolt 6 difficult to remove, and greatly improving the security of the lead seal. At the same time, the chip in the plastic substrate 1 can record information to achieve traceability, and the marking areas 5 at both ends can intuitively display relevant information, which is convenient for identification and management. Finally, the connecting groove 9 provides precise installation space for the locking strip 3 and the connecting bolt 6, ensuring the stability of the connection structure. The plastic connecting bolt 6 is compatible with the overall plastic structure, reducing the wear caused by the contact of different materials. The coordinated action of each part of the structure ensures that the seal maintains a reliable sealing state in complex environments.
[0025] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. An electronic plastic seal with a built-in non-copyable RFID chip, comprising a plastic substrate (1), characterized in that: A connecting block (2) is fixedly connected to the outside of the plastic substrate (1). A locking strip (3) is snapped to the inside of the connecting block (2). A connecting bolt (6) is threaded between the locking strip (3) and the connecting block (2). A slot (4) is opened in the plastic substrate (1) to cooperate with the locking strip (3). Three locking teeth are opened in the slot (4). The top and sides of the locking strip (3) are provided with locking teeth to cooperate with the three locking teeth.
2. The electronic plastic seal with a built-in non-copyable RFID chip according to claim 1, characterized in that: The connecting bolt (6) is made of plastic, and an auxiliary locking block (7) is fixedly connected to one end of the connecting bolt (6).
3. The electronic plastic seal with a built-in non-copyable RFID chip according to claim 2, characterized in that: The auxiliary card block (7) and the connecting bolt (6) are provided with a splitting tooth (8).
4. The electronic plastic seal with a built-in non-copyable RFID chip according to claim 1, characterized in that: The plastic substrate (1) has a chip embedded in it.
5. An electronic plastic seal with a built-in non-copyable RFID chip according to claim 1, characterized in that: The plastic substrate (1) has marking areas (5) at both ends.
6. An electronic plastic seal with a built-in non-copyable RFID chip according to claim 1, characterized in that: The connecting block (2) has a connecting groove (9) for use with the locking strip (3) and the connecting bolt (6).
7. An electronic plastic seal with a built-in non-copyable RFID chip according to claim 6, characterized in that: The end of the connecting bolt (6) is located inside the connecting groove (9).