Multi-piece solid golf ball
View Patent ↗The present invention provides a multi-piece solid golf ball, of which flight distance is improved by accomplishing high launch angle and low spin amount, when hit by golfers, who swing a golf club at low head speed, using a middle iron club to a driver. The present invention relates to multi-piece solid golf ball comprising a center, an intermediate layer formed on the center and a cover covering the intermediate layer, wherein the intermediate layer is formed from only one material having a flexural stiffness of 400 to 5,000 MPa.
1. A multi-piece solid golf ball comprising a center, an intermediate layer formed on the center and a cover covering the intermediate layer,
wherein the intermediate layer consists essentially of a single material having a flexural stiffness of 700 to 1,200 MPa, selected from the group of chemicals consisting of: polyurethane-based thermoplastic elastomer, polycarbonate resin, and polyacetal resin,
wherein the cover is formed from a polyurethane-based thermoplastic elastomer,
wherein the center is formed from a rubber composition which comprises a peptizing agent in an amount of 0.1 to 2.0 based on 100 parts by weight of a base rubber, and the center has a deformation amount of 3.0 to 6.0 mm when applying from an initial load of 98 N to a final load of 1275 N, and
wherein the golf ball has a deformation amount of 2.4 to 3.5 mm when applying from an initial load of 98 N to a final load of 1275 N.
2. The multi-piece solid golf ball according to claim 1 , wherein the intermediate layer has a thickness of 0.5 to 2.0 mm.
3. The multi-piece solid golf ball according to claim 1 , wherein the intermediate layer has a thickness of 0.8 to 1.8 mm.
4. The multi-piece solid golf ball according to claim 1 , wherein the intermediate layer has a thickness of 0.9 to 1.5 mm.
5. The multi-piece solid golf ball according to claim 1 , wherein the intermediate layer consists essentially of a single compound selected from polyurethane-based thermoplastic elastomer and polyacetal resin.