In recent years, due to the continuous deepening of people's understanding of RFID technology and the continuous reduction of application costs, RFID has been accelerating its penetration in all walks of life.In the clothing industry, UNIQLO, Decathlon, h&m, Hailan home and other major shoe and clothing manufacturers have applied RFID on a large scale to improve the efficiency of the supply chain; Libraries across the country, large and small, have chosen to use RFID solutions to manage a large number of books, and there have been librarian workstations, self-service return boxes (machines), mobile inventory vehicles, sorters and other forms of products; Airlines use RFID technology to track baggage in real time, which greatly reduces the baggage loss rate of passengers

Although generally speaking, RFID tags can be divided into low-frequency RFID tags, high-frequency RFID tags and ultra-high frequency RFID tags, almost all of these scenes with huge tag consumption use ultra-high frequency RFID tags, which mainly comes from the following advantages:

(1) UHF RFID electronic tags have a longer reading distance;

(2) UHF RFID electronic tag has strong security and confidentiality;

(3) UHF RFID electronic tags can identify high-speed moving objects;

(4) UHF RFID electronic tag can realize synchronous recognition of multiple objects at the same time;

(5) UHF RFID electronic tags can be reused and have a large amount of data memory.

Rich forms of label products under diversified application scenarios

Due to the significant differences in requirements and use conditions in different industries and application scenarios, different requirements are put forward for the performance and form of labels. This is mainly based on the balance of business requirements, process conditions, application costs, application scenario environment and other aspects. For example, if the identified object is a metal product, it needs to add microwave absorbing materials to achieve the characteristics of metal resistance. Electronic label products can be roughly divided into three categories from the form, namely, traditional self-adhesive label, injection molding label and card label. The traditional RFID electronic tag with self-adhesive function encapsulates RFID into a self-adhesive form, which is suitable for the automatic collection of product information on highways, parking lots and industrial production lines. In campus, traffic, access control and other scenes, non-contact IC cards are often used, and it is also easy to see special-shaped labels made by injection molding process in access control.

In addition, because different countries and regions have different spectrum allocation, the coverage of UHF electronic tag frequency band definition is also different, for example:

(1) The frequency bands in China are 840~844mhz and 920~924mhz;

(2) EU band: 865mhz~868mhz;

(3) Japanese frequency band: between 952mhz and 954mhz;

(4) Hong Kong, Thailand and Singapore: 920mhz~925mhz;

(5) The frequency band of the United States, Canada, Puerto Rico, Mexico and South America is 902mhz~928mhz.

Common applications and tag forms of UHF RFID

(1) Footwear and clothing retail industry - coated paper tag / woven label

Among many RFID application scenarios, the most common is the footwear industry, which is also one of the areas with the largest consumption of UHF RFID tags.

The introduction of RFID technology in the footwear and clothing industry is a whole process, from factory to warehouse, and then to retail terminals. It can automatically collect the data of various operation links such as arrival inspection, warehousing, outbound, transfer, stock transfer and inventory counting in the clothing warehouse, so as to ensure the speed and accuracy of data input in all links of warehouse management, ensure that enterprises timely and accurately grasp the real data of the inventory, and reasonably maintain and control the enterprise inventory.

In terms of the retail market of shoes and clothing, the popularity of foreign brands for UHF RFID tags is much higher than that of domestic brands. This is mainly because foreign brand stores are all over the world, and fashion FMCG has high requirements for the liquidity of goods. The use of RFID tags can greatly improve the efficiency of product circulation management.

(2) Ceramic electronic label
Ceramic electronic tag is an electronic tag based on ceramic material packaging, which has high electrical characteristics, high performance, fragile and anti transfer. The electronic tag antenna stopped on the ceramic substrate has small dielectric loss, good high-level characteristics, stable antenna performance and high sensitivity. It is mainly used in logistics storage, intelligent parking, production line management, anti-counterfeiting detection and other fields.

(3) ABS label

ABS label is a common injection label, which is often used in logistics management scenarios. It can be installed on the surface of metal, wall, wood products and plastic products. Because the surface has solid protective function, it is resistant to high temperature and moisture, and is suitable for harsh working environment.

(4) Clothing washing - Silicone label

Silicone label adopts silicone packaging technology, which is mostly used in the washing industry. Because silicone is soft and deformable, it has the characteristics of high temperature resistance, kneading resistance, etc., and is often used for inventory management of towels and clothing products.

(5) Strap label

The strapping label is generally packaged with PP nylon material, which has excellent characteristics such as easy installation and disassembly, water resistance, high temperature resistance and so on. It is commonly used in logistics tracking, food traceability, asset management and other fields.

(6) Dripping PVC card label

The card made of PVC material can be customized according to the shape, so that the card has the appearance and texture of handicrafts, and effectively protects the internal chip and antenna, which is convenient to carry. It can be used for access control, item identification management, game chips and other scenes.

(7) Pet label

Pet is the abbreviation of polyester film. Polyester film is a kind of polymer plastic film, which is more and more favored by consumers because of its excellent comprehensive properties. It can block ultraviolet rays, has good high and low temperature resistance, and has good creep resistance. As China's production volume and technical level still cannot meet the market demand, some still need to rely on imports. Pet labels are often used in jewelry management scenarios.

(8) PPS laundry label

PPS laundry tag is a common RFID tag in the linen washing industry. It is similar in shape and size to buttons and has strong temperature resistance. By using PPS laundry labels, washing management becomes more efficient and transparent.