| 摘要 |
<p>The present invention is directed towards a method of forming a multilayer golf ball (2) which comprises a core, an inner layer (4), an inner cover layer (6) and an outer cover layer (8). The steps include forming a golf ball core: molding an inner cover layer (6) around said golf ball core with a material having a first Shore D hardness; and casting an outer cover layer (8) around said inner cover layer (6) and golf ball core with a thermoset material having a second Shore D hardness less than the first. The core is composed of a center made from a first rubber based material and an outer layer (4) formed from a second rubber based material. Preferably, the first rubber based material has about 15 to 25 parts of a crosslinking agent per hundred parts of rubber and the second rubber based material has about 20 to 40 parts of a crosslinking agent per hundred parts of rubber.</p> |
