Solid golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorsAtsushi Nakamura, Hisashi Yamagishi, Takashi Maruko, Yutaka Masutani
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Abstract
A solid golf ball comprises a solid core and a cover of at least one layer, the solid core having a multilayer construction which includes a center core and an outer core layer enclosing the center core. The center core is composed primarily of a thermoplastic resin or elastomer, and has a diameter of 3-18 mm and a Shore D hardness of 15-50. The outer core layer has a Shore D hardness near the interface thereof with the center core which is 1-15 units higher than the Shore D hardness of the center core. The ball has a good feel, excellent durability and good distance.
Claims10
A solid golf ball comprising a solid core and a cover of at least one layer that encloses the solid core, the solid core having a multilayer construction which includes a center core and an outer core layer that encloses the center core, wherein
- the center core consists essentially of a thermoplastic resin or a thermoplastic elastomer, and has a diameter of 3 to 16 mm and a Shore D hardness of 15 to 50, and
- the outer core layer is made of a rubber composition composed primarily of cis-1,4-polybutadiene and has a Shore D hardness near the interface thereof with the center core which is 1 to 15 higher than the Shore D hardness of the center core, and at least one layer of the cover is harder than the outer core layer.
Dependencies are inferred from the claim text.