GOLF BALL MANUFACTURING METHOD
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United States of America Patent
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Issued Date -
Sep 18, 2014
app pub date -
Mar 12, 2013
filing date -
Mar 12, 2013
priority date (Note) -
Abandoned
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Abstract
This invention provides a method of manufacturing a golf ball composed of a core encased by a cover of at least one layer using an injection mold. The method includes the step of using, as a cover-forming material, a resin composition which is composed primarily of a thermoplastic polyurethane material and includes a lubricant composed primarily of a montanic acid ester, and also controlling the mold temperature of the injection mold within the range of 30 to 60° C.; and the step of injection-molding the resin composition over the core with the injection mold controlled to the foregoing mold temperature.
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