| 摘要 |
<p>The method of making a sports racket frame with improved string holes includes providing a predetermined number of insertion pins 131 in the molding cavity. The inner wall surface of the molding cavity adjacent to each insertion pin is filled with the fiber cement 14 made of materials identical in quality to those making up the tubular strip 15 used to form the racket frame. The sports racket frame so attained is composed of string holes 21 which are integrally and simultaneously made with the racket frame as a unitary body and are provided with tubular support walls extending along the circumference thereof to reinforce the structural strength of the racket frame. <IMAGE></p> |
