Golf ball having reduced surface hardness

摘要

Golf ball comprising a core comprising: an untreated region extending radially from a geometric center a distance DUTr, a treated region disposed about the untreated region and extending inward from an outer surface a depth DTr; and an intermediate untreated region disposed about the untreated region and adjacent the treated region. The treated region is exposed to and comprises a fatty acid and/or fatty acid salt composition, and has a first hardness. The untreated region and intermediate untreated region have second and third hardnesses, respectively, and have not been exposed to and do not comprise the fatty acid and/or fatty acid salt composition. The first hardness is different than the second hardness and the third hardness. A first core layer comprises the untreated region, a second core layer, disposed thereabout, comprises the intermediate untreated region, and a third core layer, disposed about the second core layer comprises the treated region.

主权项

1. A golf ball comprising:
a core and at least one cover layer disposed about the core; the core comprising a geometric center and an outer surface, the core further comprising an untreated region extending radially from the geometric center a distance DUTr and a treated region disposed about the untreated region and extending inward from the outer surface a depth DTr, said treated region having been exposed to and comprising a fatty acid and/or fatty acid salt composition and having a first hardness, the untreated region not comprising the fatty acid and/or fatty acid salt composition and having a second hardness, the core further comprising an intermediate untreated region disposed about the untreated region and adjacent the treated region, the intermediate untreated region not comprising the fatty acid and/or fatty acid salt composition and having a third hardness, wherein the first hardness is different than the second hardness and the third hardness, wherein the core comprises a first core layer extending radially from the geometric center, a second core layer disposed about the first core layer and a third core layer disposed about the second core layer, and wherein the first core layer comprises the untreated region, wherein the second core layer comprises the intermediate untreated region, and wherein the third core layer comprises the treated region.