| 摘要 |
PURPOSE:To increase mechanical characteristics such as tensile strength, compressive strength, etc., and obtain a good feeling on using and further, get a good form-working property and appearance, by providing a hybrid prepreg layer between a core member and a molding crust material and/or an outermost layer. CONSTITUTION:A hybrid prepreg 1' is provided in such a manner that different fibers from reinforced fibers in the fibers are arranged in the same direction as the reinforced fibers between a core member and a molding crust material and/or the outermost layer in a racket frame provided with the molding crust material 102 at the periphery of the core member 101. Specified sheets of fiber- reinforced prepreg for forming the molding crust material are preferably wound around the core member 101 made of hard foamed urethane or the like and cured for its making. The molding crust material 102 is made of a plurality of carbon fiber-reinforced prepregs or the hybrid structure is formed by superimposing carbon fiber-reinforced prepreg with glassfiber-reinforced prepreg. |
