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 scuff resistance. The present invention relates to a multi-piece solid golf ball comprising a core consisting of a center and an intermediate layer, and a cover, wherein the center has a diameter of 25 to 40 mm, and a surface hardness (B) is higher than a central point hardness (A) of the center by not less than 15, the intermediate layer has a thickness of 0.5 to 8.0 mm, and a surface hardness of the intermediate layer (C) is higher than the (A) by 15 to 35, the cover comprises polyurethane-based thermoplastic elastomer as a main component, and has a thickness of 0.3 to 1.5 mm and a hardness (D) in Shore D hardness of 35 to 55, and the (D) is higher than the (D) by 3 to 25.
1. A multi-piece solid golf ball comprising a core consisting of a center and an intermediate layer formed on the center, and a cover covering the core, wherein
the center has a diameter of 25 to 40 mm, and a surface hardness in Shore D hardness of the center is higher than a central point hardness in Shore D hardness of the center by not less than 15,
the intermediate layer has a thickness of 0.5 to 8.0 mm, and a surface hardness in Shore D hardness of the intermediate layer is higher than the central point hardness of the center by 15 to 35,
the center and intermediate layer comprise cis-1,4-polybutadiene rubber as a main component,
the cover comprises polyurethane-based thermoplastic elastomer as a main component, and has a thickness of 0.3 to 1.5 mm and a hardness in Shore D hardness of 35 to 55, and
the surface hardness of the intermediate layer is higher than the hardness of the cover by 3 to 25.
2. The multi-piece solid golf ball according to claim 1 , wherein the polyurethane-based thermoplastic elastomer is formed by using cycloaliphatic diisocyanate.