To provide a shaping mold 2 which can obtain a golf ball excellent in aerodynamic symmetry and appearance.
The shaping mold 2 includes upper and lower molds 4 and 6. The upper and lower molds 4 and 6 are put together to form a spherical cavity. Numerous pimples 10 are arrayed on the cavity surfaces of the upper and lower molds 4 and 6. The upper and lower molds 4 and 6 each have flat surfaces 14, protrusions 16 and recesses 18. The protrusions 16 protrude from the equator Eq and the recesses 18 are hollowed below the equator Eq. The protrusions contain some parts of the pimples 10. The center angle between a protrusion 16 and another protrusion 16 adjacent to the protrusion is 10 or more and 20 or less. The number of protrusions 16 are 18 or more and 33 or less. The height Hp of the protrusions 16 is O.2 mm or more and 1.5 mm or less.
JPH10127826A | 1998-05-19 | |||
JP2007195591A | 2007-08-09 |
US20060193934A1 | 2006-08-31 |
Sumitomo Norio
Kuroyoshi Murohashi