Patent ID: 7226557

Claim:
A method of producing a golf ball, including molding a cover material mainly composed of a thennoplastie resin into two half shells in turn arranged on a core or an intermediate layer and joined together and ten introduced into a mold formed of semispherical pieces, and heat and compression molded to allow a cover to cover the core, the method comprising: a first step to form the half shells by a heat and compression molding process, and a second step to allow the two half shells to be arranged on the core or the intermediate layer, joined together, and heat and compression molded to mold the cover to have a thickness of 0.3 to 1.0 mm, and wherein in the second step, if the mold has a temperature T 1 ° C. and the half shells start to flow at a temperature T 2 ° C. T 1 minus 2 is set within a range of −3° C. to 10° C.