An RFID tag section (10) is constructed from a seal material section (11), a substrate material section (12) formed in a layered manner on the seal material section (11), and a printing material section (13) formed in a layered manner on the substrate material section (12). On the surface of the substrate material section (12) is formed an RFID tag composed of an LSI chip (21), an antenna (22), and an impedance regulation section (23). Those portions of the seal material section (11) and the substrate material section (12) that are located below the impedance regulation section (23) are cut out, and an impedance regulation section cutout section (30) is provided in the cutout region. When the impedance regulation section cutout section (30) is cut out from the RFID tag section (10), the impedance regulation section (23) connected to the antenna (22) is separated from the RFID tag.