Method of forming a golf ball core

  • US 6,180,040 B1
  • Filed: 09/02/1998
  • Issued: 01/30/2001
  • Est. Priority Date: 09/02/1998
  • Status: Expired due to Term
First Claim
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1. A method of forming a golf ball core which comprises:

  • combining a resilient polymer component, a free radical initiator system, and a crosslinking agent to provide a first mixture;

    forming the first mixture into a plurality of half-shells having a desired shape;

    subjecting the half-shells to a first heat curing at a first temperature and time chosen to partially crosslink each half-shell so as to impart a rigidity sufficient to maintain the desired shape until the half-shells are assembled and subjected to a second heat curing, wherein a portion of the initiator system sufficient to initiate the second heat curing remains after the first heat curing;

    providing a center;

    assembling at least two half-shells concentrically about the center to form a first mantle layer, wherein the first mantle layer and center together form the ball core; and

    subjecting the core to the second heat curing at a second temperature and for a time sufficient to further crosslink the half-shells, thereby forming a cured golf ball core.

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