| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a racket frame retaining the light weight without lowering the rigidity and the strength and exhibiting superior vibration damping property. <P>SOLUTION: This racket frame 10 comprises a laminated body formed by stacking two or more fiber reinforced resin layers. At least, a single fiber reinforced modified resin layer 20 whose matrix resin is a modified resin composition having a loss factor tan δ of not less than 0.5 and not more than 3.0, which is measured under the conditions of 0°C-10°C and the frequency of 10 Hz, is stacked thereon, and the weight of the fiber reinforced modified resin layer 20 is not less than 1% but not more than 10% of the weight of the fiber reinforced resin layer excluding the fiber reinforced modified resin layer 20. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
