| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To easily adjust the weight of a head without deteriorating a ball hit sound. <P>SOLUTION: A golf club head 1 internally has a hollow part i where a first weight adjustment material 8 to be fluid by heating, solidified at normal temperature, and fixed to the hollow part by its own adhesive force is arranged with a plurality of second weight adjustment materials 9 in small piece shape which are fixed to the first weight adjustment material 8 by the adhesive force of the first weight adjustment material 8.. The second weight adjustment materials 9 includes: a core material part made of a metallic material where specific gravity is not less than seven; and a coating part made of a resin material for coating the circumference of the core material part. The coating part comprises at least one projections on the surface. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
