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 H M , H S , H I and H C , respectively, the H M , H S , H I and H C satisfy a correlation represented by the following formulae: −5≦( H S −H M )≦5 H S <H I <H C and the cover is formed from polyurethane material as a main component, and has a hardness in Shore D hardness of 45 to 60.

1 . 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 H M , H S , H I  and H C , respectively, the H M , H S , H I  and H C  satisfy a correlation represented by the following formulae:      −5≦( H   S−H   M )≦5    H   S <H I <H C      and    the cover is formed from polyurethane material as a main component, and has a hardness in Shore D hardness of 45 to 60.    
     
     
         2 . The multi-piece solid golf ball according to  claim 1 , wherein the golf ball has a deformation amount of 2.5 to 4.0 mm, when applying from an initial load of 98 N to a final load of 1274 N.  
     
     
         3 . The multi-piece solid golf ball according to  claim 1 , wherein the polyurethane material comprises polyurethane-based thermoplastic elastomer as a main component.