| 摘要 |
Badminton-racket frame made up of a ring frame 10, a neck 20, a shaft 30 and a handle 40, which racket-frame parts also include a layer 101 made of carbon-fibre-reinforced plastic or fibre-reinforced plastic which has been impregnated with a high-polymer epoxy resin to form a pre- impregnated sheet, and a solid separate foaming material as an internal core 102. The present badminton-racket frame is heat pressed to shape and has a shaft 30, whose core of foaming material has a diameter of approx 1 mm. <IMAGE> |
