Title
Properties of recycled papers important for printable antennas
Authors
DIANA GREGOR-SVETEC MATEJ PIVAR and TADEJA MUCK

Published Volume 49 Issue 7-8 July-August
Keywords recycled paper, conductive ink, resistance of printed ink layer, print penetration

Abstract
In this research work, recycled papers differing by the grammage and recycled fiber content were analysed. The research was focused on the properties of paper substrates, which are crucial for the functionality of printed antennas used in radio frequency identification (RFID) tags. Two commercially available printing inks with conductive silver particles were applied. The surface properties of coated and uncoated papers were analysed in connection with the conductivity of the printed ink layer. The thermal stability of the paper substrates was also evaluated as a function of various drying temperatures and processes. Another aspect of the investigation was the evaluation of the stability and print quality of the printed ink layer. The results have shown that recycled paper is an appropriate substrate for the printed electronic structures, such as RFID antennas, and could also be used for packaging applications.