Method of making a golf ball with a multi-layer core
First Claim
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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; and
h) forming a cover over the core.
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Abstract
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.
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Citations
10 Claims
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1. A method of manufacturing a golf ball comprising the steps of:
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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; and h) forming a cover over the core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification