Patent ID: 6905647
Filing Date: 2005-06-14
Classification: B29C,B29K,B29L,Y10S

Abstract:
1. A process for producing a golf ball comprising the steps of: a kneading step to obtain a rubber composition by kneading a base rubber, a crosslinking agent and solid particles; and a molding step to form a mid layer by placing a center and said rubber composition disposed around the center into a spherical cavity of a mold comprising an upper portion and a lower portion, followed by compression of the rubber composition in the mold, and by allowing excess rubber composition to outflow from a space between the upper portion and the lower portion of the mold, wherein adjustment is executed so that said mid layer comprises 6 or more solid particles having a ratio “D/T”, a ratio of the particle size D to the thickness of the mid layer T, of equal to or greater than 0.7.