发明名称 GOLF BALL
摘要 PROBLEM TO BE SOLVED: To provide a golf ball 2 having excellent flying performance and controllability on middle iron shots.SOLUTION: A golf ball 2 includes a spherical core 4 and a cover 6 covering the core 4. The cover 6 includes an inner cover 8 and an outer cover 10 positioned outside the inner cover 8. When distances (%) from a central point to nine points and JIS-C hardness at the nine points which are obtained by dividing a region from the central point to a surface of the core 4 at intervals of 12.5% of a radius of the core 4 are plotted in a graph, the Rof a linear approximation curve obtained by a least-square method is 0.95 or larger. The hardness of an innermost layer of the cover 6 is higher than the surface hardness of the core 4. Preferably, the core is obtained by being crosslinked with a rubber composition. The rubber composition includes (d) an acid and/or a salt.
申请公布号 JP2013248241(A) 申请公布日期 2013.12.12
申请号 JP20120126149 申请日期 2012.06.01
申请人 DUNLOP SPORTS CO LTD 发明人 SAJIMA TAKAHIRO;NAKAMURA HIROTAKA
分类号 A63B37/00 主分类号 A63B37/00
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