METHOD OF MANUFACTURING GOLF CLUB SHAFT MADE OF FIBER- REINFORCED RESIN

摘要

PROBLEM TO BE SOLVED: To provide a method of molding and manufacturing a golf club shaft made of fiber-reinforced resin with a taper angle shift point in the middle in the longitudinal direction where the taper angle changes, without air staying in the shaft base material. SOLUTION: In manufacturing this golf club shaft, the shaft base material 2 is formed of a pre-preg sheet made of reinforced fibers wound/layered around a core pole 1 whose diameter is different at both ends with a taper angle shift point (p) in the middle in the longitudinal direction, and the outer surface of the shaft base material 2 is wrapped with heat-contractile tapes 6a and 6b in a helical manner. In this case, at least two heat-contractile tapes 6a and 6b are used to wrap the shaft base material 2 starting at the taper angle shift point (p) toward either end (b) and (t) of the shaft respectively in a helical manner.