RFID yarn module and method for making the same

A method for forming an RFID yarn module, comprising steps of:

• providing a roll-to-roll equipment having a material roll arranged thereon, wherein the material roll comprises a plurality of RFID tags two-dimensionally formed on the material roll, and each RFID tag comprises a polymer substrate having a first surface and a second surface opposite to the first surface, a metal layer formed on the first surface of the polymer substrate, an RFID element disposed on and electrically connected to the metal layer, a first adhesive layer formed on the metal layer, and a first polymer layer formed on the first adhesive layer and the RFID element;
• moving a material band segment having M×N RFID tags from the material roll to a processing station along a first direction;
• forming a quantity M of protection layers on the first polymer layer of the M×N RFID tags at the processing station wherein the quantity M of protection layers are formed along a second direction perpendicular to the first direction;
• moving the material band segment having the quantity M of the protection layers to a cutting station;
• and
• cutting the material band segment having the quantity M of the protection layers along the first direction thereby forming a quantity N of RFID tag bands.