Multi-piece solid golf ball

Abstract

The present invention provides a multi-piece solid golf ball having good shot feel, excellent flight performance and excellent controllability. The present invention relates to a multi-piece solid golf ball comprising a core composed of a center and at least one intermediate layer formed on the center, and a cover covering the core, wherein assuming that a central point hardness of the center, a surface hardness of the center, a hardness of the intermediate layer and a hardness of the cover in Shore D hardness are represented by HM, HS, HI and HC, respectively, the HM, HS, HI and HC satisfy a correlation represented by the following formula: HM<HS<HI<HC and the cover is formed from polyurethane material as a main component, and has a hardness in Shore D hardness of 45 to 60.

Description

[0001] The present invention relates to a multi-piece solid golf ball. More particularly, it relates to a multi-piece solid golf ball having good shot feel, excellent flight performance and excellent controllability.[0002] In golf balls commercially selling, there are solid golf balls such as two-piece golf ball, three-piece golf ball and the like, and thread wound golf balls. Recently, the two-piece golf ball and three-piece golf ball, of which flight distance can be improved while maintaining soft and good shot feel at the time of hitting as good as the conventional thread wound golf ball, generally occupy the greater part of the golf ball market. Multi-piece solid golf balls represented by three-piece golf ball have good shot feel while maintaining excellent flight performance, because they can vary hardness distribution and design of golf balls, when compared with the two-piece golf ball.[0003] The three-piece solid golf balls are obtained by inserting an intermediate layer betw...

AI Technical Summary

Benefits of technology

0009] A main object of the present invention is to provide a multi-piece solid golf b

Problems solved by technology

In the golf ball, since the cover is formed from ionomer resin as a base resin, the spin performance of the resulting golf ball is not sufficiently obtained, and the controllability is poor.

In addition, the scuff resistance is not sufficiently obtained.

In the golf ball, since the cover is formed from ionomer resin as a base resin, the hardness of the cover is high, and the shot feel and controllability are poor.

However, since the cover has low hardness and large thickness, the rebound characteristics

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