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Core definition and technical essence

The anti-theft and anti-tampering seal is a sealed tool that uses physical locking or electronic anti-counterfeiting as its core function, and is designed to prevent items from being illegally opened, swapped, or stolen during the circulation process. It employs a "non-reversible destruction" design, meaning that once it is forcibly disassembled, it will leave traces and cannot be restored to its original state. The seal is categorized into different types based on the application scenario, such as mechanical lock, ID tracking, and composite material anti-counterfeiting, and is widely used in logistics, finance, and healthcare sectors.

Core functions and application scenarios

(1) Logistics Transport: Safeguarding Goods Throughout the Chain

· Application scenario: sealing of express parcels, containers, cold chain shipping containers

· Technical value: By inserting plastic seals or metal lead seals, a "visual safety chain" is formed at the warehouse, transshipment, and pickup of goods.For example, cross-border e-commerce parcels use plastic seals with unique QR codes, and the consignee can verify the seal status by scanning the code, and if there is a break or an incorrect number, the goods can be directly determined that they have been repackaged.

· Sample case: A Wuliu company uses high-strength nylon seals, tensile strength of 50N, with the flow number of laser engraving, so that the transfer rate of goods decreased by 92%.

(2) Finance and precious commodities: anti-insider theft and compliance regulation

· Application scenarios: ATM cash box, bank cash box, jewelry escort box seal

· Technology upgrade: The metal seal has a tiny chip built into it, automatically records the time and place of sealing when locked, and reads the data through dedicated equipment, enabling dual protection of "physical sealing + electronic tracking."For example, bank cash boxes use electronic seals with GPS positioning, and if the seal is illegally opened during transportation, the system alerts and locates in real time.

(3) Medical and dangerous goods: compliance and safety are in short supply

· Application scenarios: vaccine cold chain boxes, medical waste bags, packaging of controlled drugs

· Special requirements: both tamper prevention and biosafety standards need to be met.For example, the vaccine transport box uses a medical grade PP seal, and a temperature-sensitive color change ink is printed on the surface. If the transport temperature is abnormal, the color of the seal changes, and the locking area is designed to prevent tear-forming texture. Any disassembly will leave unrepairable marks.

(4) Luxury and high-end retail: anti-counterfeiting and traceability integration

· Application scenario: packaging sealing for luxury watches, jewelry, high-end clothing

· Technology fusion: The transparent anti-counterfeit seal contains fluorescent fibers and micro QR codes, and consumers can scan the code on their mobile phones to see the product tracing information, while the seal material is designed to be fragile, and forced disassembly will cause the fibers to break and cannot be restored.One luxury brand reduced the circulation of counterfeit goods by 75 percent through this technology.

Core technical characteristics and anti-counterfeiting design

(1) Physical tamper-proof structure

1. Zigzag biting and backlink design:

The plastic seal uses a jagged lock core, and the hook is stuck after tightening, and forced pull will cause the lock to break and leave a thorn. The metal seal is pressed through a lead seal mold, and when dismantled, a crack or deformation is inevitable.

2. Fragile materials and destructive printing:

Some of the seals use fragile paper or with a destructive ink label, if the paste is torn off, the surface of the text will be fragmented off, or reveal the "Kaifeng" hidden logo.

(2) Digital anti-counterfeiting technology

1. The unique identity coding system:

Each seal is equipped with laser engraved 4-8-bit unique codes, or encrypted QR codes, linked to enterprise management systems, enabling "box one code" tracing.

2. Smart monitoring of electronic seals:

Integrated RFID chip or NB-IoT module for real-time transmission of seal status (open or not, ambient temperature, etc.) for remote supervision of high-value goods.

(3) Environmental adaptability and durability

· Temperature range: - 40 ° C ~ 120 ° C (metal seal), -20 ° C to 60 ° C (plastic seal), adapted to cold chain and high temperature transportation scenarios;

· Corrosion resistance: PP material seal can resist weak acid weak alkali, metal seal surface galvanized / nickel to prevent oxidation and rust.

Material classification and performance comparison

|PP (Polypropylene): Ziplock-style plastic seal with tensile strength: 50-100N

Advantages: Low cost, high hardness

Applicable scenarios: general logistics, e-commerce packages

|PE Polyethylene: Flexible Binding Tape

Tensile strength: 30-80N

Advantages: Can withstand low temperatures, easy to bend

Application scenarios: cold chain transportation, sealing of irregular objects

|Nylon (PA): High-strength industrial sealant with tensile strength: 100-200N

Advantages: High resistance to wear and impact

Application scenarios: containers, heavy equipment

|Metal Lead/Steel: Lead seals, steel wire seals

Tensile strength: 300-500N

Advantages: High security and irreversibility

Application scenarios: finance, customs, hazardous materials transportation

Guide to purchase and use

(1)Key selection criteria

1. Security level: Choose the appropriate-strength seal based on the value of the item (e.g., for standard courier services, use a 50N plastic seal; for jewelry transport, use a steel seal with a tensile strength of 300N or higher).

2. Anti-counterfeiting technology: For high-value scenarios, it is recommended to use wire seals with a unique code; for less valuable scenarios, a physical seal with a unique identifier can be used.

3. Compliance Certification: The medical and food industries need to confirm that the materials meet safety certifications such as FDA and LFGB, while for export scenarios, certifications like CE and ROHS are required.

(2) Usage Guidelines and Risk Mitigation

When applying the seal, ensure that it is securely closed and the serial number is clearly visible for easy identification.

• When opening the package, record the entire process, and retain any remnants of the seal as proof;

Industry trends

With the widespread adoption of the Internet of Things (IoT) and blockchain technology, anti-theft and anti-tampering seals are evolving towards "intelligence-based and decentralized" solutions. For instance, a blockchain-based seal status record-keeping system enables the lifecycle data of seals to be recorded on the blockchain, thereby preventing human tampering of the records. AI image recognition technology can automatically detect signs of seal damage, thereby enhancing the efficiency of logistics security inspections. In the future, seals will not only serve as "physical locks" but also act as the "digital identity" for the security of items.