| 摘要 |
<p>[Problem] To provide a mass-producible game ball that is not affected by magnets, has a surface that does not act as an antenna, is configured from a material that is permeable to electromagnetic waves, and incorporates an RFID. [Solution] An RFID (12) is embedded through a support body in the interior of a ball main body (11) having a starting material that is a mixture of tungsten powder and nylon. A discontinuous film (13) is formed at the surface of the ball main body (11), and furthermore a transparent resin (15a, 15b) is formed at the surface thereof.</p> |
