Research on Process Parameters of Screen Printed RFID Tags

RFID is an automatic identification technology. The screen-printed RFID tag is gradually applied broadly in logistics management, anti-counterfeiting and many other fields according to its uniqueness. Based on the principle of RFID tag and its antenna performance, this paper conducted a comparative RFID analysis on both traditional and new silk printing ways. The result of this research demonstrated that the process of silk-screen printing RFID is simpler and therefore has a significant cost advantage. Antennas of different structures and sizes were designed in this paper and the factors influencing the performance of antennas were analyzed. As for experiment, three factors influencing the performance of antennas were considered: mesh count, squeegee angle and the curing conditions of conductive ink (such as drying time and drying temperature). The screening experiment and analysis results illustrated that it is most conducive to RFID printing and the performance of conductive ink screen printed reaches its peak when the mesh of the silk screen is above 200 mesh/inch, squeegee angle is around 55°–75°, dying temperature is 100 °C in 10–15 min. From above processes, a most conductive ink screen printed performance can be fulfilled.