| 摘要 |
PROBLEM TO BE SOLVED: To heighten the vibration damping characteristic of a racket frame and reduce the weight thereof while keeping the strength and rigidity thereof. SOLUTION: This racket frame 10 is formed of fiber reinforced resin taking thermoplastic resin as matrix and fiber reinforced resin taking thermosetting resin as matrix resin. In the section in the direction of thickness of the racket frame 10, a fiber reinforced thermosetting resin layer 20 as an inner layer and a fiber reinforced plastic resin layer as an outer layer are firmly connected by a silane coupling agent 22. |
