| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a racket string having less looseness caused by stress relaxation, excellent in durability, and having ball-striking performance equal to that of a natural string, compared with a conventional racket string. <P>SOLUTION: The racket string includes a sea-island type composite monofilament composed of a thermoplastic elastomer as a sea component and a thermoplastic synthetic resin different from the thermoplastic elastomer as an island component, and the number of sea components is 7-25. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
