Abstract: An object of the present invention is to provide a painted golf ball which is excellent in the gloss and the evenness of the paint thickness as well as the adhesion of the paint film to the golf ball body. The method for producing the golf ball of the present invention comprises applying a two-component curing type urethane-based aqueous paint including an aqueous polyol composition (A) and an aqueous polyisocyanate (B) to a golf ball body in a specific method, wherein (A) the aqueous polyol composition contains (a-1) an aqueous acrylic polyol, (a-2) an aqueous urethane polyol and (a-3) an aqueous urethane resin.

Abstract: An object of the present invention is to provide a painted golf ball which is excellent in the gloss and the evenness of the paint thickness as well as the adhesion of the paint film to the golf ball body. The method for producing the golf ball of the present invention comprises applying a two-component curing type urethane-based aqueous paint including an aqueous polyol composition (A) and an aqueous polyisocyanate (B) to a golf ball body in a specific method, wherein (A) the aqueous polyol composition contains (a-1) an aqueous acrylic polyol, (a-2) an aqueous urethane polyol and (a-3) an aqueous urethane resin.

Abstract: A method of making a golf ball including a core and a cover, and having good workability and excellent productivity includes the steps of clamping a half mold having a semi-spherical cavity and a male plug mold having a semi-spherical convex, followed by injection molding fluoroplastic from an inlet vent through a runner to form a fluoroplastic thin film on the surface of the half mold, incorporating a pair of the two half molds having the fluoroplastic thin film, which is composed of an upper mold and a lower mold, into a core mold, placing a core composition in the cavity, press molding the core composition in the core mold through the fluoroplastic thin film to form a spherical core, and covering the core with a cover.

Abstract: The present invention provides a method of making a golf ball having good workability and excellent productivity. The present invention relates to a method of making a golf ball comprising a core and a cover, the method comprising the steps of: (a) (i) clamping a half mold having a semi-spherical cavity and a male plug mold having a semi-spherical convex, followed by injection molding fluoroplastic from an inlet vent through a runner to form a fluoroplastic thin film on the surface of the half mold, (ii) incorporating a pair of the two half molds having the fluoroplastic thin film, which is composed of an upper mold and a lower mold, into a core mold, (iii) placing a core composition in the cavity, (iv) press molding the core composition in the core mold through the fluoroplastic thin film to form a spherical core, and (b) covering the core with a cover.