Method for producing a golf ball
AssigneeSpalding Sports Worldwide, Inc.
InventorsR. Dennis Nesbitt, Michael J. Sullivan, Terence Melvin
Life of this patent
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Abstract
The present invention is directed to golf ball core constructions and methods for forming the golf ball core construction. The 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.
Claims5
A method for molding a golf ball having a spherical molded core including a central portion with a hardness in a range of about 60-80 Shore C and a soft integral outer surface portion with a hardness in a range of about 50-60 Shore C, said method comprising the steps of:
- softening an outer surface of a slug to a depth of 1/32 inch to 1/4 inch by controlling molding temperatures;
- producing the spherical molded core having the soft integral outer surface comprising the radially outermost 1/32 inch to 1/4 inch of the spherical molded core from said softened slug;
- and
- molding a cover over the soft integral outer surface of the spherical core to form the golf ball.
Dependencies are inferred from the claim text.