| 摘要 |
In a wound golf ball comprising a wound core and a cover, the wound core is formed by winding thread rubber on a center ball of multi-layer structure consisting of an inner sphere and an enclosure layer. The inner sphere has a diameter of 28-37 mm and a distortion of 3.5-10 mm under a load of 100 kg. The enclosure has a melting point higher than the cover molding temperature and a Shore D hardness of 40-75. The center ball has an outer diameter of 33-38 mm and a distortion of 2.5-6 mm under a load of 100 kg. Whether the head speed is high or low, an increased flight distance and improved feel are obtained.
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