| abstract |
The invention provides a multi-piece solid golf ball composed of a solid core, a cover, at least one intermediate layer interposed therebetween, and a plurality of dimples on a surface of the ball. The diameter of the solid core, the deflection of the core when compressed under a final load of 130 kgf from an initial load of 10 kgf, the hardness at the center of the core, the hardness in a region 5 mm to a region 10 mm from the center of the core, the hardness in a region 15 mm from the center of the core, and the surface hardness are set within specific ranges. The intermediate layer is composed primarily of a material obtained by mixing under applied heat a specific resin composition, and the thickness, material hardness and material melt flow rate (MFR) of the intermediate layer, as well as the hardness difference between the surface of the solid core and the intermediate layer are set within specific ranges. The cover is composed primarily of a thermoplastic resin, and has a thickness, a hardness and a material melt flow rate (MFR) set within specific ranges. In addition, the number of dimples on the ball and the total dimple trajectory volume (TVT) for the dimples on the ball are set in specific ranges. The golf ball of the invention has an excellent feel, controllability and flight performance. |