Method of forming a golf ball core
US6180040A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1998 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Sep 2, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/546
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention includes methods of forming at least a portion of a golf ball core, and the golf balls prepared thereby, by mixing 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 shells having a desired shape, first heat curing the shells at a temperature to impart a rigidity sufficient to maintain the desired shape until the shells are assembled and subsequently heat cured, quenching the first heat curing by reducing the shell temperature to inhibit crosslinking while a sufficient amount of free radical initiator system is present to facilitate a second heat curing, providing a center, assembling at least two shells concentrically about the center to form a first mantle layer, wherein the first mantle layer and center together form the ball core, and second heat curing the core at a temperature and for a time sufficient to further crosslink the first mixture and to at least partially crosslink the shells, thereby forming a cured golf ball core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.