Process for producing golf ball

Details Process for producing golf ball Process for producing golf ball

2005-06-14

2005-06-14

Colaianni, Michael P. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

C264S148000, C264S161000, C264S250000, C264S271100, C264S279000, C264S279100, C264S320000, C425S420000, C425S812000, C473S371000, C473S373000, C473S374000, C473S375000, C473S376000, C473S377000

Reexamination Certificate

active

06905647

ABSTRACT:
Golf ball1includes a core2and a cover3. The core2has two layers including a center4and a mid layer5. The mid layer5is formed by covering the center4with two half shells comprising a rubber composition, and by compression and heating of the center4and half shells in a mold. The rubber composition contains solid particles dispersed therein. The solid particles have a ratio “D/T”, i.e., a ratio of the particle size D to the thickness of the mid layer T, of equal to or greater than 0.3. Upon molding, the solid particles inhibit the center4to approach a cavity face. Accordingly, deviation of mass of the mid layer5can be suppressed. The solid particles have a ratio “W/T”, i.e., a ratio of the radial width W thereof to the thickness of the mid layer T, of from 0.3 to 1.0.

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