Performance requirements for Anti-metal Shielding Label

The performance requirements for anti-metal shielding labels primarily focus on ensuring that the labels can operate stably on metal surfaces or in metal environments, avoiding metal interference or shielding of signals. The following are the main performance requirements for anti-metal shielding labels:

1. Anti-metal shielding performance

Effectively prevent metal interference: Metals can seriously affect the signal transmission of RFID labels. Therefore, when designing anti-metal labels, it is necessary to ensure that they can resist the shielding effect of metals and guarantee stable signal reading. Generally, labels need to have a certain isolation design, using special materials or structures to avoid direct contact between metals and the antenna.

Antenna design optimization: The antenna of the label typically employs a special design, such as a half-wave dipole or a PIFA antenna, to adapt to the electromagnetic environment on the metal surface and reduce the impact of metal reflection on the signal.

2. Reading distance

Stable reading distance: Even on metal surfaces or in metal environments, metal-proof labels should maintain a good reading distance. Generally speaking, the reading distance of industrial RFID labels should be kept between 1 meter and 6 meters, depending on factors such as the label's operating frequency and power.

Reading capability on metal surfaces: The label must ensure that even when attached to a metal surface, the reader can stably read the label's information, avoiding signal attenuation or loss caused by the metal surface.

3. Anti-interference capability

Reduce multi-path effect interference: In a metallic environment, signals may be reflected or experience multi-path interference. Anti-metal shielding labels need to be designed with good anti-interference capabilities to ensure that multi-path signals do not affect the performance of the labels.

Prevent signal loss: The label should possess strong signal reception capabilities, capable of resisting potential electronic noise in the surrounding environment, RFID reader frequency interference, and other factors.

4. High and low temperature stability

The anti-metal label should be able to operate normally under extreme temperature conditions. The common operating temperature range is generally from -40°C to +85°C. For labels used in high-temperature applications, a more heat-resistant structure may need to be designed to withstand higher temperature fluctuations.

5. Corrosion resistance and chemical resistance

Labels should possess corrosion resistance, especially when in contact with metal surfaces or chemical substances such as acids, alkalis, oils, solvents, etc. that may be present in industrial environments. The material of the labels should be chosen from materials with strong chemical resistance, such as polyimide (PI), PET, or special coatings, to ensure the reliability of the labels in harsh environments.

6. Mechanical durability

The anti-metal shielding label should possess excellent resistance to impact, vibration, and wear. Especially during industrial production, transportation, and warehousing processes, where the label may be subjected to frequent friction, collision, and vibration, it is essential that the label maintains stable performance and is not damaged due to physical impact.

The label surface needs to be scratch-resistant: avoid scratching or abrasion of the label surface to ensure clear identification and stable reading during long-term use.

7. Moisture resistance and waterproofing

The label should possess waterproof and moisture-proof capabilities, especially when used in humid environments such as outdoors or cold storage. This necessitates that the label has a high IP rating (such as IP67 or higher), which can effectively prevent the infiltration of moisture or dampness, ensuring that the label is not affected by moisture or dampness.

8. Read stability and high data rate

The stability of label reading is highly required. Even on metal surfaces or in metal environments, the information on the label must be reliably and quickly readable.

High data transmission rate: The anti-metal labels should be capable of supporting high-speed data transmission, especially in application scenarios that require rapid scanning and processing of a large amount of information.

9. Size and adhesion capability

The size of the label should be suitable for affixing to metal surfaces, ensuring a stable attachment that is not prone to detachment. Generally, strong industrial adhesives or screw fixation are used to ensure the label adheres firmly.

These requirements ensure that the anti-metal shielding labels can operate stably and reliably in harsh industrial environments.