Golf ball

Abstract

A matte colored golf ball which is free of luster and gloss has a good appearance in which injection marks that form during injection molding of a cover layer—be it an intermediate layer or an outermost layer—are difficult to see and scuffing on the cover surface is inconspicuous. The golf ball includes a core, an outermost layer, an intermediate layer therebetween, and a coat formed on the surface of the outermost layer. The intermediate layer is formed of a resin composition containing a thermoplastic resin and a colorant consisting of a fluorescent dye or a fluorescent pigment and has a specific visible light transmittance, the outermost layer is molded of a transparent or translucent resin composition that is free of fluorescent dye, and the coat is formed of a urethane-based coating composition containing delustering particles.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This non-provisional application claims priority under 35 U.S.C. § 119(a) on Patent Application No. 2019-121009 filed in Japan on Jun. 28, 2019, the entire contents of which are hereby incorporated by reference.TECHNICAL FIELD[0002]The present invention relates to a multi-piece solid golf ball having a core, an intermediate layer, an outermost layer and a coating layer.BACKGROUND ART[0003]The dimples formed on the surface of a golf ball are an important constituent element that increases the aerodynamic performance in the flight of the ball, and can also be a factor determining the aesthetic appearance and decorativeness of the ball. In colored golf balls in particular, the impression given by the ball appearance is collectively determined by a combination of, for example, the shapes of the dimples, the color of the ball and effect pigments. Many colored balls include fluorescent colorants and the like in the cover layer (outermost layer)....

AI Technical Summary

Benefits of technology

The invention is a golf ball with dimples that appear to be "free of dimples" and can hide injection marks during the molding process. The golf ball has a matte color appearance, with scuffing on the cover surface inconspicuous. The technical effect is improved aesthetics and a better feel when hitting the ball.

Problems solved by technology

Yet, although these golf balls are colored golf balls having a bright, diaphanous hue, such a ball appearance is readily subject to dimple-shaped shadows and light-reflecting effects, which adversely affects play.

Moreover, because it is common in colored golf balls to include a light-harvesting dye in the resin material for the outermost layer of the cover and thereby make the outermost layer colored, one problem that arises is that, when numerous scuff marks form on the cover surface with prolonged use of the ball, such scuffing on the surface becomes conspicuous on account of the color, worsening the impression made by the ball's appearance.