Golf ball

Abstract

Golf ball 2 of the present invention has core 4, cover 10 situated on the external side of the core 4, and paint layer provided to cover this cover 10. The base polymer of the cover 10 is a urethane resin. The base polymer of the paint layer 16 is a urethane resin. The cover 10 has a thickness Tc of 0.1 mm or greater and 0.7 mm or less. The paint layer 16 has a thickness Tp (mm) of 0.015 mm or greater and 0.040 mm or less. The ratio (Tp/Tc) is 0.021 or greater and 0.40 or less. Preferably, the paint layer 16 is formed with two or more layers 18 and 20. Preferably, the base polymer of the paint layer 16 is a two-pack type urethane resin or a two-pack type epoxy resin.

1 . A golf ball which comprises a core, a cover situated on the external side of the core, and a paint layer provided to cover the cover, wherein:
 the base polymer of the cover is a urethane resin;   the base polymer of the paint layer is a urethane resin;   the cover has a thickness Tc of 0.1 mm or greater and 0.7 mm or less;   the paint layer has a thickness Tp (mm) of 0.015 mm or greater and 0.040 mm or less; and   the ratio (Tp/Tc) is 0.021 or greater and 0.40 or less.   
   
   
       2 . The golf ball according to  claim 1 , wherein the paint layer is formed with two or more layers. 
   
   
       3 . The golf ball according to  claim 1 , wherein the base polymer of the paint layer is a two-pack type urethane resin or a two-pack type epoxy resin. 
   
   
       4 . The golf ball according to  claim 1 , wherein the base polymer of the cover is a thermoplastic polyurethane elastomer. 
   
   
       5 . The golf ball according to  claim 1 , wherein
 one or more mid layers are provided between the core and the cover, and   the base polymer of the mid layer that is in contact with the core is an ionomer resin.   
   
   
       6 . The golf ball according to  claim 1 , wherein the cover has a Shore D hardness of 20 or greater and 50 or less.