Patent ID: 6299551
Filing Date: 2001-10-09
Classification: A63B

Abstract:
A multi-piece solid golf ball comprising; a solid core formed of a rubber composition, an intermediate layer of at least one layer around the core, and a cover of at least one layer around the intermediate layer, whereinsaid intermediate layer is formed mainly of a thermoplastic resin having a Shore D hardness of 8 to 24, wherein said intermediate layer is formed mainly of a heated mixture of (A) a thermoplastic polyester elastomer and (B) at least one thermoplastic elastomer selected from the group consisting of olefin elastomers, modified olefin elastomers, styrene block copolymers and hydrogenated styrene block copolymers, or the thermoplastic defined as (B), the mixture of the intermediate layer has an (A)/(B) ratio by weight of 95/5 to 0/100 and said cover is formed mainly of another thermoplastic resin and has a Shore D hardness of at least 57 which is at least 25 units higher than the Shore D hardness of said intermediate layer.