Patent ID: 6913727

Claim:
A method of manufacturing a golf club head of composite material, comprising the steps of: (a) arranging a first die, a second die and a mold plunger; wherein said first die and said second die can be driven by an external force to combine with or separate from each other; wherein said first die has a first cavity having a recessed portion at a side thereof and said second die has a second cavity having a recessed portion at the side facing said recessed portion of said first cavity of said first die such that the recessed portions of the first and second cavities are brought together when said first die and said second die are combined; wherein at least one of the first and second cavities of said first and second dies is provided with a tunnel portion extending inwardly from a side of the respective die to the recessed portion of the respective cavity; wherein said mold plunger has a mold portion at an end thereof and a plunger portion at the other end thereof and said mold portion is removably insertable into said recessed portions of the first and second cavities through said tunnel portion; (b) combining said first die and said second die such that a mold cavity is defined by said first cavity of said first die and said second cavity of said second die; (c) putting a bulk molding compound (B.M.C.) into the mold cavity; (d) pushing said mold plunger into said mold cavity through the tunnel portion until the tunnel portion is sealed by the plunger portion of said mold plunger such that a mold space is defined in between the recessed portions of said first and second cavities and the mold portion of said mold plunger and compression molding said bulk molding compound within said mold space; and (e) solidifying said compressed bulk molding compound, and then separating said first die, said second die and said mold plunger to get a golf club head with a shape corresponding to the mold space.