Patent ID: 8883062

Claim:
A method for molding a multi-layered golf ball, comprising the steps of: coating a powder composition comprising a blend of first and second ultra-low melt index ionomer copolymers of α-olefin, C 3 to C 8 α, β-ethylenically unsaturated mono-or dicarboxylic acid, and optional softening monomer, each ionomer copolymer having acid groups, wherein 70% to 100% of the acid groups are neutralized in the first ionomer copolymer and 20% to 70% of the acid groups are neutralized in the second ionomer copolymer, to interior surfaces of upper and lower mold members, the upper and lower mold members defining a mold cavity, wherein the surfaces of the upper and lower mold cavities have dimple patterns; placing a golf ball subassembly comprising a core of at least one layer into the mold cavity, wherein the interior surfaces of the mold members and surface of the ball subassembly have been pre-treated with an amino-silane agent; applying heat and pressure to the mold members so the powder composition fuses and encapsulates the subassembly and forms an outer cover having a dimpled pattern, the cover comprising the blend of ultra-low melt index ionomer copolymers; and removing the molded, multi-layered golf ball from the mold cavity.