Patent ID: 7595016
Filing Date: 2009-09-29
Classification: B29C,B29K,B29L

Abstract:
1. A method for manufacturing a golf ball, comprising the steps of: forming a core having one or more layers; preparing a rubber composition by mixing an organic peroxide in a range of more than 0.3 part by weight to 7.5 or less parts by weight with 100 parts by weight of a rubber component which consists of a crystalline rubber present in an amount of 10 weight % or more and a noncrystalline rubber; forming an uncrosslinked or partially crosslinked half shell by molding the rubber composition at a temperature of 10 to 40° C. lower than the one-hour-half-life temperature of the organic peroxide; sandwiching the core between two thus-formed half shells so as to keep the thickness of the half shells uniform; and heat-molding the resulting composite to render the half shells into a cover covering the core, wherein the cover has a thickness of 0.3 to 1.2 mm.