| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a golf ball 2 excellent in flight performance and control performance. <P>SOLUTION: The golf ball 2 includes a core 4, an intermediate layer 6 located on the outside of the core 4, a reinforcing layer 8 located on the outside of the intermediate layer 6, and a cover 10 located on the outside of the reinforcing layer 8. The difference between JIS-C hardness H (5.0) at a point whose distance from the central point of the core 4 is 5 mm and JIS-C hardness Ho at the central point is 6.0 or more. The difference between JIS-C hardness H (12.5) at a point whose distance from the central point is 12.5 mm and the hardness H (5.0) is 4.0 or less. The difference between the JIS-C hardness Hs of the surface of the core 4 and the hardness H (12.5) is 10.0 or more. The difference between the hardness Hs and the hardness Ho is 22.0 or more. In the golf ball 2, a zone where hardness decreases from the central point to the surface does not exist. The hardness H2 of the intermediate layer 6 is greater than the hardness H3 of the cover 10. <P>COPYRIGHT: (C)2012,JPO&INPIT |
