초록 ▼

The present invention is directed to molded golf ball core constructions and methods for improving the molded golf ball core construction. The molded golf ball comprises a molded spherical core having a soft skin integral therewith, and a cover molded over the core. The soft skin is formed by contro

The present invention is directed to molded golf ball core constructions and methods for improving the molded golf ball core construction. The molded golf ball comprises a molded spherical core having a soft skin integral therewith, and a cover molded over the core. The soft skin is formed by controlling exothermic molding temperatures. A slug is placed in a mold cavity which is then closed. A steam set point is set, and steam is applied for a 25-30 minute period such that a maximum mold temperature exceeds the steam set point. In the alternative, the core surface may be softened by first immersing a slug in water prior to subjecting the slug to conventional molding conditions.

대표청구항 ▼

[ We claim:] [1.] A method for molding golf balls, wherein said golf balls comprise a spherical molded core including a central portion having a hardness in a range of about 50-90 Shore C and an outer surface portion having a hardness in a range of about 50-70 Shore C, the surface portion integral w

[ We claim:] [1.] A method for molding golf balls, wherein said golf balls comprise a spherical molded core including a central portion having a hardness in a range of about 50-90 Shore C and an outer surface portion having a hardness in a range of about 50-70 Shore C, the surface portion integral with the central portion and comprising the radially outmost 1/32 inch to 1/4 inch of the spherical core and a cover molded over the spherical molded core, the method comprising the steps of:softening the outer surface of a slug, said slug to be used as a center for a golf ball, wherein the softening is to a depth of up to 1/4 inch by controlling molding temperatures, thereby producing a spherical core having a soft integral outer surface; andmolding a cover over the soft integral outer surface of the spherical core.