RFID production is very different from traditional label printing. At present, China's traditional label printing technology has a very high level. There are many companies with rich experience in the trademark printing industry, and they also produce many beautifully designed and high-quality products. , But for RFID, some people think that it is nothing special, as long as it is covered with a beautiful coat with ordinary labels, which is not difficult for printing companies with high-quality labels, but simply adding a beautiful coat RFID, for its high added value will cause important losses. So, compared with traditional label printing, what are the characteristics of RFID printing? First of all, from the definition of RFID, intelligence refers to the radio frequency circuit composed of chips, antennas, etc .; and the label is the commercialization of the radio frequency circuit by the label printing process. From a printing perspective, the emergence of RFID will bring higher gold content to traditional label printing. The chip layer of RFID can be encapsulated and printed with materials such as paper, PE, PET and even textiles to make stickers, paper cards, hang tags or other types of tags. The chip is the key to RFID and is determined by its special structure , Can not withstand the pressure of the printing machine, so, in addition to inkjet printing, generally use the process of printing the surface layer first, and then compound with the chip layer, die cutting process. 1. Printing method Printing is mainly based on screen printing. This is mainly because the printing quality of screen printing on integrated circuit boards and membrane switches is beyond the reach of other printing methods. In RFID printing, conductive ink is used, and printing is conductive The better screen for the ink is a nickel foil perforated screen. It is a high-tech wire mesh. It is not a wire mesh woven from ordinary metal or nylon wire, but a nickel foil drilled foil mesh. The mesh is hexagonal, and it can also be made into a circle by electrolytic forming. Hole shape. The entire screen is flat and even, which can greatly improve the stability and precision of the imprint. It is used for printing high-tech products such as conductive inks, wafers and integrated circuits. It can distinguish 0.1mm circuit line spacing and positioning accuracy can reach 0.01mm. 2. Application of conductive ink Conductive ink is a special ink. It can add conductive carrier to UV ink, flexographic water-based ink or special offset printing ink to make the ink conductive. Conductive inks are mainly composed of conductive fillers (including metal powders, metal oxides, non-metals and other composite powders), connecting agents (mainly synthetic resins, photosensitive resins, low-melting organic glass, etc.), additives (mainly dispersants, adjustments Agents, thickeners, plasticizers, lubricants, inhibitors, etc.), solvents (mainly aromatic hydrocarbons, alcohols, ketones, esters, alcohol ethers, etc.), conductive ink is a functional ink, mainly in printing There are conductive inks such as carbon paste and silver paste. Carbon paste ink is a one-liquid type thermosetting ink. It has the function of protecting copper foil and conducting current after film formation and curing. It has good conductivity and low impedance; it is not easy to oxidize, has stable performance, and is resistant to acids, alkalis and chemical solvents. Erosion; has the characteristics of strong wear resistance, good wear resistance and thermal shock resistance. Silver paste ink is a one-component ink composed of ultra-fine silver powder and thermoplastic resin. It can be used on PET, PT and PVC sheets. It has strong adhesion and hiding power, low temperature curing, and controlled conductivity And very low resistance. In addition, conductive nano inks made of conductive carbon can be added to conductive inks made of ink, and metallic powders (such as silver powder) in conductive inks can also be made into nano-sized silver powders to make conductive inks. This conductive ink not only prints the film Thin, uniform and smooth, excellent performance, and can save a lot of materials. In RFID printing, conductive ink is mainly used to print RFID wire, replacing the traditional metal antenna made by the foil pressing method or the etching method. It has two main advantages. First of all, the metal antenna made by the traditional foil pressing method or etching method is complicated and the production time of the finished product is long. The conductive ink printing antenna is a high-speed printing method that is efficient and fast. It is a printed antenna And the preferred fast and cheap method in the circuit. Today, conductive inks have begun to replace etched antennas in various frequency bands, such as ultra-high frequency bands (860MHz to 950MHz) and microwave bands (2450MHz). Antennas printed with conductive inks can be compared with traditional etched copper antennas. In addition, conductive ink is also used to print sensors and circuit printing in RFID. Secondly, the metal antenna made by the traditional foil pressing method or the corrosion method consumes waste metal materials, and the cost is higher, while the raw material cost of the conductive ink is lower than that of the traditional metal antenna, which is of great significance for reducing the manufacturing cost of RFID. . 3. Unique process requirements In RFID printing, there are unique requirements for the manufacturing process, and attention should be paid to high yield, thick paper printing and composite processing. In terms of high yield, because the value of RFID itself is many times higher than that of ordinary printed labels, so while bringing high profits to enterprises, high yield of printed products is particularly important. In particular, many products require multi-color UV ink printing, glazing, and gluing. Most of the large-volume labels are also processed by roll-to-roll printing or non-interface printing (through flowers). It makes the screening of finished products more difficult. For thick paper printing, in the processing of cardboard, it must be noted that the equipment must have good printing suitability for 350 g thick cardboard, and the tension of the paper tape should be kept stable during cardboard printing to ensure that the cumulative overprint error of printing is minimized. Therefore, if every picture is overprinted accurately, but the gap between the pictures has a large error, it will also cause trouble for the compounding and die cutting process after RFID printing. As for composite processing, it is a key process in RFID processing. Not only does it require that the size between each label will not change due to changes in tension, but also for film materials, the degree of increase in label spacing caused by tensile deformation must also be considered and done Appropriate adjustments. Box Products,Paper Mache Boxes,Paper Box Packaging,Paper Take Out Boxes Ningbo DSS Intelligent Technology Co., Ltd , https://www.dssking.com