| 摘要 |
The present invention provides a multi-piece golf ball comprising a core 3 , a first intermediate layer 5 , a second intermediate layer 7 , and a cover 9 , wherein the first intermediate layer 5 comprises a plurality of ribs 51 formed on the core 3 ; the second intermediate layer 7 is placed in concave portions surrounded by the ribs 51 ; and the cover 9 forms an outermost layer; with each of the ribs extending so that its width increases from the cover side to the core side; the concave portions being shaped into a funnel-like form by the side surfaces of the ribs; the hardness of the core 3 , the first intermediate layer 5 and the second intermediate layer 7 being different from each other; and the hardness of the first intermediate layer 5 being greater than that of the second intermediate layer 9.
|
