| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a shaft of golf club of which strength and durability are improved so as to prevent it from being peeled or damaged while it is tenacious, stable and comfortable to hit and carries and direction of balls to be hit become stable. SOLUTION: The shaft consists of layer 4 of a main body around which the first fiber strengthen prepreg of which strengthen fiber is soaked in synthetic resin is winded and adjusting layer 5 around which the second fiber strengthen prepreg of which strengthen fiber is soaked in synthetic resin is winded inside or between the layer 4 of the main body. The second fiber strengthen prepreg has higher specific gravity and lower elasticity than the first one. The ratio of the adjusting layer's bulk to the whole should be 10-90%.</p> |
