Tennis racket having an improved attenuation of oscillations and backstroke pulses and an increased striking force and process for manufacturing it under considertion of the process of an automated

There is provided a vibration improved and recoil pulse damping and striking-force increased method by using cavities which contain freely moved bodies and are mounted in the frame of a tennis racket. Fiber reinforced multi-layer thin sheet is firstly fabricated, and then is made into rolls, the rolls are placed in a mould of racket, and then heated to press and adhere to the inner wall of the mould, at the same time hardening foam forming material is blown in. The characteristic is that loading belts are placed in the rolls and in the direction of ball striking, while the cavities filled withabsorption substances are mounted among the edges of the loading belts.