초록

A method of forming a golf ball by forming a core center, forming a laminate of core material, forming the laminate around the core center to form a core and forming a cover around the core. The laminate preferably consists of at least three layers of different polybutadiene rubbers.

대표청구항 ▼

[ We claim:] [1.] A method of manufacturing a golf ball comprising the steps of:a) forming a solid center of a first core material;b) forming first sheets of a second core material having a different hardness than the first core material;c) forming second sheets of a third core material having a dif

[ We claim:] [1.] A method of manufacturing a golf ball comprising the steps of:a) forming a solid center of a first core material;b) forming first sheets of a second core material having a different hardness than the first core material;c) forming second sheets of a third core material having a different hardness than the first core material;d) forming at least two laminates from the first and second sheets of second and third core materials;e) vacuum forming one of the at least two laminates to a top mold cavity and another of the at least two laminates to a bottom mold cavity;f) inserting the center between the vacuumed-formed laminates while the vacuumed-formed laminates are in the mold cavities;g) subsequent to the inserting step, compression molding the vacuumed-formed laminates which are in the mold cavities around the center to form a core having a substantially uniformly thick first layer of second core material around the center and a substantially uniformly thick second layer of third core material around the center and first layer; andh) forming a cover over the core.