| 摘要 |
<p>PURPOSE:To prevent the adhesion of water and foreign matter to the outside surface of a golf ball and the flawing of the face part of a club head at the time of hitting the ball and to prolong the flying distance of the ball by constituting the outside surface of the golf ball of a material exhibiting high water repellency of the contact angle of a specific value. CONSTITUTION:The outside surface 2 of the golf ball 1 is constituted of the material having the water repellency of >=90 deg. contact angle. If the outside surface 2 of the golf ball is constituted of the highly water-repellent material, the outside surface of the ball repels water even in a rainy weather or even when lawn is wet with dew and therefore, the water does not stick at all or hardly sticks to the outside surface 2. The pressure of the air between the face part of the club head and the ball 1 increases extremely at the time of hitting the golf ball 1 with the club head, and therefore, the water drops sticking thereto are blown off by the pressure. The water does not substantially exist between the face part and the ball 1 when the face part hits the ball 1.</p> |
