| 摘要 |
PURPOSE: To produce a golf ball having good appearace by forming the whole or part of a mold from a porous material having three-dimensional fine communication holes so that the communication holes can communicate with a cavity space to make air entraining inferiority hard to generate. CONSTITUTION: In a golf ball producing mold 1 having a hollow spherical cavity 2 formed therein, the whole or part of the lower mold 1b of the mold 1 is formed from a porous material 11 having a three-dimensional fine communication holes so that the communication holes can communicate with the space of the cavity 2. By this constitution, air in the cavity 2 can be certainly and smoothly discharged to the outside and air entraining inferiority is hard to generate and a golf ball having good appearance can be molded. Since the golf ball molded using this mold 1 has a satin like surface by the porous material 11, when painting is applied to the golf ball after molding, a surface reoughening process can be omitted or simplified and the close adhesiveness of a coating film is good. |
