MULTI-LAYERED CORES FOR GOLF BALLS BASED ON IONOMERS

摘要

Multi-piece golf balls having a solid core of at least one layer and cover of at least one layer are provided. Thermoplastic ethylene acid copolymer ionomer compositions are used to form the core layers. Preferably, the ball contains a dual-core having an inner core and surrounding outer core layer. Low modulus and high modulus ionomer compositions may be used in the core structure. The ionomer compositions have varying levels of hardness. The resulting ball has high resiliency and rebounding properties.