Title:
MULTI-PIECE SOLID CORE GOLF BALL
Document Type and Number:
Japanese Patent JP3387830
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a golf ball in which multi-piece solid core parts are formed of a rubber composition and by which a ball hit feeling is softened and lowering of repulsion is decreased.
SOLUTION: This multi-piece solid core golf ball is so constructed that a solid core 3 of a multi-layer structure formed by covering an inner core 1 with outer cores 2 of one, two or more Layers is coated with a cover 4. The golf ball is characterized in that the diameter of the inner core is 6-18 mm, the JIS-A hardness of the inner core is 70 or less, and tanδ at 30°C is 0.03 or less. Preferably, the JIS-C hardness of the outer core is 60-85, and the inner core is formed by crosslinking the base rubber with a resin cross linking agent.
Inventors:
Kohei Takemura
Kazuhisa Fusehara
Koichi Iwata
Kazuhisa Fusehara
Koichi Iwata
Application Number:
JP22802598A
Publication Date:
March 17, 2003
Filing Date:
August 12, 1998
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
A63B37/00; A63B37/02; A63B37/12; C08L21/00; C08L23/26; (IPC1-7): A63B37/00; A63B37/02; A63B37/12; C08L21/00; C08L23/26
Domestic Patent References:
| JP2264674A | ||||
| JP10127818A | ||||
| JP9220297A |
Attorney, Agent or Firm:
Etsushi Kotani (2 outside)
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