| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a rubber sheet 7 for table tennis with excellent repulsive performance, flexibility, and controllability. <P>SOLUTION: The rubber sheet 7 for table tennis is molded with a latex composition containing natural rubber latex as a main component. The rubber sheet 7 is provided with excellent repulsion and flexibility. A table tennis racket using the sheet gives an excellent shot with excellent controllability. It is favorable that tangent loss tanδis not less than 0.01 and not more than 0.04 and also complex modulus of elasticity E* is not more than 2 MPa in the rubber sheet 7, when the viscoelastic spectrum of a sinewave tensile condition is measured under a fixed condition. It is also favorable that the natural rubber latex is the deproteinised one. The rubber sheet is physically excellent with little rubber odor. Synthetic rubber latex can be partially added to the natural rubber latex. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
