Research Of Fabricating Technology Of RFID Tags On Paper Based Substrates By Roll To Roll

Internet-of-Things(IOT)envisions a future in which digital and physical entities can be linked,by means of appropriate information and communication technologies,to enable a whole new class of applications and services.RFID is expected to play a key role as enabling identification technology in IOT and based on the fabrication technology of RFID tags.Moreover,metal antenna of tags is designed to radiate electromagnetic wave and achieve information communication.Hence,a good metal layer is a top priority for RFID tag preparation.In this paper,the commonly used roll-to-roll printing ink accessories are added in the inkjet printing catalytic ink to fabricate the roll-to-roll printing ink.Then,the roll-to-roll printing technology is combined with the electroless deposition of metal antenna to fabricate paper-based RFID tags.The paper material is composed of natural plant fibers and a certain amount of filler,which has a layered network porous structure.In order to reduce the penetration of ink in paper-based materials,a metal antenna pattern with better conductivity and stronger adhesion properties is obtained on the surface of the paper substrate.In this article,two steps of paper-based surface modification on paper-based substrate are designed to get high quality metal antenna.After the treatment of colloidal solution on paper substrate surface,the ink penetration in the paper substrate is reduced by 50%.Moreover,the treatment of chitosan solution to paper substrate introduces various functional groups to adsorb catalytic ions.After the surface treatment and modification on paper substrate,the metal layer of RFID label antenna can be obtained by Roll to Roll printing technique and electroless plating technology with high surface crystallinity and good adhesion performance.Scanning electron microscopy(SEM),X-ray diffraction analysis,energy dispersive spectroscopy(EDS)and adhesion tests were performed on the metal antenna of the RFID tag.These results prove that the surface topography of the metal layer was dense and the copper layer has high crystallinity and good adhesion.After 40 minutes electroless deposition,the RFID tag metal antenna on paper substrate had a low resistivity with 2.58 x 10-8 Ω·cm.After more than 1000 bending tests,RFID tags still have good communication performance.Therefore,it can be concluded that the novel and efficient solution-processing procedure proposed herein can be used to prepare an RFID tag with good mechanical properties and electrical properties on paper-based substrate.