GOLF BALL

摘要

PROBLEM TO BE SOLVED: To provide a golf ball capable of minimizing a reduction in spin performance by repeated hitting and providing excellent stability of flying performance and durability without deteriorating a flying distance increasing effect by dimples. SOLUTION: In the golf ball having many dimples of at least one sort in a surface, an angleθformed by a tangent to a virtual ball surface assuming that there is no dimple at an arbitrary point on the edge part of each dimple and a tangent to a real ball surface at the arbitrary point is in the range of 5 deg.<=θ<=20 deg., and a rate Vr(%) of the whole volume of a virtual ball assumed to have no dimples in the surface of the golf ball to the total of the dimple space volume of all the dimples is in the range of 0.8%<=Vr<=1.1%.