US 12,147,857 B2
RFID-tagged flexible material having an antenna containing a carbon nanotube yarn and method for manufacturing
Yoshiaki Hagihara, Tokyo (JP)
Assigned to LINTEC CORPORATION, Tokyo (JP)
Appl. No. 17/633,155
Filed by LINTEC CORPORATION, Tokyo (JP)
PCT Filed Sep. 4, 2020, PCT No. PCT/JP2020/033675
§ 371(c)(1), (2) Date Feb. 4, 2022,
PCT Pub. No. WO2021/054156, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 2019-168026 (JP), filed on Sep. 17, 2019.
Prior Publication US 2022/0343123 A1, Oct. 27, 2022
Int. Cl. G06K 19/02 (2006.01); D02G 3/16 (2006.01); G06K 19/077 (2006.01)
CPC G06K 19/025 (2013.01) [D02G 3/16 (2013.01); G06K 19/027 (2013.01); G06K 19/0772 (2013.01); D10B 2101/122 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A radio-frequency-identifier (RFID)-bearing flexible material comprising:
a flexible material; and
an RFID attached to the flexible material, wherein:
the RFID comprises an antenna portion,
the antenna portion is formed of a conductive linear body containing a carbon nanotube yarn and a resin,
the carbon nanotube yarn is a yarn bundle of a plurality of carbon nanotube yarns bundled together or one strand of carbon nanotube yarn,
the resin is a thread resin,
the thread resin and the yarn bundle or the thread resin and the one strand of carbon nanotube yarn are twisted together,
when the carbon nanotube yarn is the yarn bundle,
a major axis length of a cross section of the yarn bundle orthogonal to a longitudinal axis direction of the yarn bundle is from 7 μm to 5000 μm, and when the carbon nanotube yarn is the one strand of carbon nanotube yarn,
a diameter of the one strand of carbon nanotube yarn is from 5 μm to 100 μm.