| 摘要 |
<p>PURPOSE: To increase the driving distance of a ball and to increase the degree of freedom of ornamentability by decreasing the coefft. of dynamic friction to a ball at the time of hitting a ball, thereby decreasing the back spins of the ball. CONSTITUTION: A decorative layer 10 which consists of a coating material consisting essentially of at least a polytetrafluoroethylene resin (PTFE) is formed on a front surface including the ball hitting face 2 of a head body 1.</p> |
