| 摘要 |
PROBLEM TO BE SOLVED: To provide a game ball that is not affected by a magnet, does not use the surface as an antenna, is composed of a material transmitting electromagnetic waves, embeds an RFID, and can be mass-produced.SOLUTION: An RFID 12 is embedded inside a ball body 11 of a mixed raw material of tungsten powder and nylon through a support. A discontinuous film 13 is formed on a surface of the ball body 11, and further transparent resins 15a, 15b are formed on the surface. |
