| 摘要 |
<p>A string 10 for a sports racket includes a core 11 formed of a plurality of core filaments of nylon 111 which are twisted together in a first direction and which are impregnated with a thermoplastic polyurethane resin 112, a moisture-cured polyurethane layer 12 enclosing the core 11, a reinforcing layer 13 formed of a plurality of reinforcing nylon filaments 131 which are disposed side by side in annular rows and which are twisted about the polyurethane layer 12 in a second direction opposite to the first direction, and a sheathing layer 14 made of a mixture of silicone and nylon resin and covering the reinforcing layer 13.</p> |
