Multi-piece solid golf ball
View Patent ↗The present invention provides a multi-piece solid golf ball, which is superior in flight distance, spin performance, shot feel and putting sound. The present invention relates to a multi-piece solid golf ball comprising a core consisting of a center, an intermediate layer formed on the center and an outer layer formed on the intermediate layer, and a cover covering the core, wherein the center has a diameter of 10 to 20 mm and a central point hardness in JIS-A hardness of 30 to 85, the intermediate layer has a surface hardness in Shore D hardness of 30 to 55, the outer layer has a hardness in Shore D hardness of 65 to 85 and comprises thermoplastic resin as a main component, and the cover has a Shore D hardness of 35 to 55 and a thickness of 0.3 to 1.5 mm.
1. A multi-piece solid golf ball comprising a core consisting of a center, an intermediate layer formed on the center and an outer layer formed on the intermediate layer, and a cover covering the core, wherein
the center has a diameter of 10 to 19 mm and a central point hardness in JIS-A hardness of 30 to 80,
the intermediate layer has a surface hardness in Shore D hardness of 30 to 55,
the outer layer has a hardness in Shore D hardness of 65 to 85 and comprises thermoplastic resin as a main component, and
the cover has a Shore D hardness of 35 to 55 and a thickness of 0.3 to 1.5 mm.
2. The multi-piece solid golf ball according to claim 1 , wherein the center and intermediate layer comprise a cis-1,4-polybutadiene rubber as a main component.
3. The multi-piece solid golf ball according to claim 1 , wherein the cover comprises polyurethane-based thermoplastic elastomer as a main component.
4. The multi-piece solid golf ball according to claim 1 , wherein the polyurethane-based thermoplastic elastomer is formed by using cycloaliphatic diisocyanate.
5. The multi-piece solid golf ball according to claim 1 , wherein the center has a diameter of 12 to 16 mm.
6. The multi-piece solid golf ball according to claim 1 , wherein the center has a diameter of 14 to 15 mm.
7. The multi-piece solid golf ball according to claim 1 , wherein the center has a central point hardness in JIS-A hardness of 35 to 75.
8. The multi-piece solid golf ball according to claim 1 , wherein the center has a central point hardness in JIS-A hardness of 40 to 70.
9. The multi-piece solid golf ball according to claim 1 , wherein the intermediate layer has a surface hardness in Shore D hardness of 32 to 53.
10. The multi-piece solid golf ball according to claim 1 , wherein the intermediate layer has a surface hardness in Shore D hardness of 35 to 50.
11. The multi-piece solid golf ball according to claim 1 , wherein the outer layer has a hardness in Shore D hardness of 67 to 80.
12. The multi-piece solid golf ball according to claim 1 , wherein the outer layer has a hardness in Shore D hardness of 70 to 78.
13. The multi-piece solid golf ball according to claim 1 , wherein the cover has a Shore D hardness of 37 to 53.
14. The multi-piece solid golf ball according to claim 1 , wherein the cover has a Shore D hardness of 40 to 50.