| 摘要 |
A wound golf ball includes a solid center, a thread rubber layer, and a cover. The solid center is composed mainly of a thermoplastic polyester elastomer and has an outer diameter of 31-34 mm, a deflection of 1.8-4.5 mm under an applied load of 50 kg, and a rebound height of 95-105 cm when dropped from a height of 120 cm. The cover has a specific gravity of 1.05-1.4 and a gage of 1.5-3 mm. When solid centers are molded using a mold having a number of cavities, little variations occur with respect to hardness and weight. Golf balls of consistent quality are obtained.
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