PURPOSE: To provide the racket frame for a racket with which the goodness of vibration attenuation characteristics and highness of strength are adjustable to meet the requirements for the racket and the method for producing the same.
CONSTITUTION: This racket frame F is molded of an internal constituting body 10 which is formed of a hollow or lightweight member at least in its core part and a plastic of a small thickness reinforced with fibers around this core part and an external constituting body 20 which is formed to a thin layer by injection molding the plastic reinforced with fibers around this internal constituting body 10. The internal constituting body 10 is formed of a thermoplastic resin reinforced with long fiber and the external constituting body 20 is formed of a thermoplastic resin reinforced with short fibers.
NISHIWAKI TAKASHI
MORI SADAKI
| JPS5861765A | 1983-04-12 | |||
| JPH03247362A | 1991-11-05 | |||
| JPH03159665A | 1991-07-09 | |||
| JPH01121074A | 1989-05-12 | |||
| JPS6145782A | 1986-03-05 | |||
| JPS58212464A | 1983-12-10 |