Patent ID: 9254425
Filing Date: 2016-02-09
CPC Classification: A63B,B29C,B29L

Claim Text:
1. A method of manufacturing a golf ball having a core, an intermediate cover layer of a heterogeneous composition and a cover, the method comprising: providing a core; placing a mating pair of hemispherical pre-molded cups about the core, each cup having at least two layers, wherein a first layer is comprised of a first polymer selected from the group consisting of partially or fully neutralized thermoplastic ionomers having a first melt flow rate and a second layer is comprised of a second polymer selected from the group consisting of partially or fully neutralized thermoplastic ionomers that is distinct from the first polymer; and heating and compressing the cups such that the first and second polymers in the cups intermingle with each other to form a single heterogeneous intermediate cover layer such that the intermediate cover layer has a hardness and modulus gradient; forming a polyurethane cover over the heterogeneous intermediate cover layer.