| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf ball 2 having excellent flight performance and excellent feel at impact. <P>SOLUTION: The golf ball 2 has a core 4, an inner cover 6 positioned outside this core 4 and an outer cover 8 positioned outside the inner cover 6. The core 4 has a spherical center 10 and a mid layer 12 positioned outside this center 10. The center 10 is formed by crosslinking a rubber composition. The mid layer 12 is formed by crosslinking a rubber composition. The inner cover 6 is made of a thermoplastic resin composition. The outer cover 8 is made of a thermoplastic resin composition. The center 10 has a diameter of 1 mm or greater and 15 mm or less. The center has a central point having JIS-C hardness H1 of 20 or greater and 50 or less. A difference (H4-H3) between a hardness H4 of a surface of the core and a hardness H3 of an innermost part of the mid layer is equal to or greater than 10. A hardness H5 of the inner cover is smaller than a hardness H6 of the outer cover. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
