摘要:
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 predetermined distance DUTr and a treated region disposed about the untreated region and extending inward from the outer surface a predetermined depth DTr. The treated region has been exposed to and comprises a fatty acid and/or fatty acid salt composition wherein the treated region comprises a first hardness and the untreated region comprises a second hardness wherein the first hardness is greater than the second hardness. Additionally, the golf ball may comprise an intermediate untreated region disposed about the untreated region and adjacent the treated region wherein the intermediate untreated region comprises a third hardness and wherein the first hardness is greater than the second hardness and the third hardness. In another embodiment, the first hardness is greater than the second hardness and substantially similar to the third hardness. In yet another embodiment, the first hardness is less than the second hardness and the third hardness.
摘要:
Multi-layered golf balls having an inner core, at least one intermediate layer, and outer cover are provided. The outer cover is made from am ultra-low melt index (ULMI) thermoplastic material using an in-molding coating process that involves applying a thin layer of the material to the interior surface of the cover mold members. Preferably, the ultra-low melt index material is a highly neutralized ionomer ethylene-based copolymer. The cover layers made from these highly neutralized polymers (HNPs) are thin and uniform and provide the golf ball with good playing performance properties. Yet, the cover layers also are tough and provide the golf ball with good impact durability.
摘要:
A golf ball including a core and a cover disposed about the core. The cover includes a thermoplastic inner cover layer having a hardness between 55 and 60 Shore D; an outer cover layer having a hardness between 55 and 60 Shore D; and a stiff intermediate cover layer disposed between the inner and outer cover layers and having a hardness greater than the inner cover layer and the outer cover layer. The inner cover layer is formed from a non-ionomeric composition including a non-ionomeric stiffening polymer and at least one E/Y copolymer or E/X/Y terpolymer, where E is an olefin, Y is a carboxylic acid, and X is a softening comonomer. The intermediate cover layer is formed from a stiff thermoplastic polyurethane or polyurea composition and the cover outer cover layer is formed from a thermoset polyurethane, a polyurea, or a urethane-urea blend.
摘要:
The invention is directed to golf ball comprising a core and a cover disposed about the core, the cover comprising at least one cover layer comprising an cover outer surface and a cover inner surface, the cover outer surface comprising a fatty acid and/or fatty acid salt composition, the cover outer surface further comprising a hardness α and the cover inner surface comprising a hardness β, wherein the hardness α is different than the hardness β. In another embodiment, the at least one cover layer comprises a treated cover region and an untreated cover region, the treated cover region extending inward from the cover outer surface a depth of about 1% or greater of a distance between the cover outer surface and the cover inner surface, and the untreated cover region being disposed about the cover inner surface and adjacent the treated cover region. In yet another embodiment, the treated cover region extends inward from the cover outer surface a predetermined depth DCTr and the untreated cover region is disposed between the cover inner surface and the treated cover region a predetermined depth DCUTr, said treated cover region being treated with and/or a comprising a fatty acid and/or fatty acid salt composition wherein the treated cover region comprises a hardness α and the untreated cover region comprises a hardness β that is different than the hardness α.
摘要:
The invention is directed to a golf ball comprising a core comprising at least one layer, a cover disposed about the core, the cover comprising at least one cover layer comprising a cover inner surface and a cover outer surface, the cover layer further comprising a treated cover region and an untreated cover region, the treated cover region extending inward from the cover outer surface a depth DCTr, the untreated cover region disposed between the cover inner surface and the treated cover region and having a depth DCUTr, the treated cover region comprising a fatty acid and/or fatty acid salt composition, wherein the treated cover region comprises a hardness α and the untreated cover region comprises n regions of hardness wherein n≧1 and wherein at least one of the n regions of hardness has a hardness H1 that is different than the hardness α, and wherein each of said n regions of hardness further comprise a depth DCUTn such that DCTr≦(1/n)(DUT1+DUT2+ . . . +DUTn). In another embodiment, the treated cover region has been exposed to and comprises a fatty acid and/or fatty acid salt composition wherein the treated cover region comprises a hardness α and the untreated cover region comprises n regions of hardness within depth DCUTr wherein n≧1 and wherein at least one of the n regions of hardness has a hardness H2 different than the hardness α, each of said n regions further having a depth DCUTn such that DCTr≦(n)(DCUT1+DCUT2+ . . . +DCUTn). In yet another embodiment, said treated cover region comprises a fatty acid and/or fatty acid salt composition wherein the treated cover region comprises a hardness α and the untreated cover region comprises n regions of hardness within depth DCUTr wherein n≧1 and wherein at least one of said n regions of hardness has a hardness H3 that is different than the hardness α, each of said n regions of hardness further having a depth DCUTn such that DCTr≦(1/n2)(DCUT1+DCUT2+ . . . +DCUTn).
摘要:
Golf balls consisting of a multi-layer core and a cover are disclosed. The multi-layer core comprises at least one intermediate core layer formed from a thermoset composition other than diene rubber.
摘要:
A method of making a golf ball comprising the steps of providing an untreated golf ball core comprising a thermoset rubber composition, the untreated golf ball core comprising an untreated outer surface having a hardness; treating the untreated outer surface of the untreated golf ball core with a surface-softening material comprising at least one fatty acid or fatty acid salt composition to form a golf ball core comprising a treated outer surface having a hardness less than the hardness of the untreated outer surface; and forming at least one cover layer about the core to form the golf ball. Also, the untreated core may comprise a geometric center and an untreated outer surface, each having a hardness such that the hardness of the treated outer surface is less than both the hardness of the untreated geometric center and the hardness of the untreated outer surface. A golf ball comprising a core and a cover, wherein the core has an outer surface that is treated with at least one fatty acid such that the outer surface has a hardness ratio (R) of the hardness after treatment (H2) to the hardness before treatment (H1) of less than about 0.95. A golf ball comprising a core and a cover, wherein the core has a geometric center having a hardness (Hg) and the core has an outer surface that is treated with at least one fatty acid or fatty acid salt such that the outer surface has an extrapolated hardness (HE) and an actual hardness (HOS) wherein HE is derived from a five point extrapolation within three quarters of an outer core diameter and HOS is measured on the curved surface of the core, and the cover has a hardness (HC), wherein HC>HE>Hg>HOS.
摘要:
A golf ball is described having a core with a multi-layer cover with a thickness of at least 3.6 mm (0.142 inches) and a Shore D hardness of at least 60. The combination of a core, preferably soft core, with a thick, relatively hard multi-layer cover results in a ball having better distance than conventional golf balls having a comparable coefficient of restitution.
摘要:
A golf ball having a core comprising metallocene catalyzed polyolefin and having a PGA compression of no greater than about 85 and a multi-layered cover disposed about the core having a thickness of at least about 3.6 mm is described. A golf ball is also described having a core with a PGA compression of no greater than about 85 and a multi-layer cover with a thickness of at least 3.6 mm (0.142 inches) and a Shore D hardness of at least about 60 wherein at least one layer of the multi-layered cover comprises a high acid ionomer resin having at least 16% by weight of an alpha, beta-unsaturated carboxylic acid. The combination of a core with a thick, relatively hard multi-layer cover results in a ball having better distance than conventional golf balls having a comparable coefficient of restitution.
摘要:
The present invention is directed to an improved golf ball comprising at least one layer having a siloxane polymer exhibiting a viscosity of at least 1 million centistokes. For a two-layered golf ball, the core and/or cover may comprises a siloxane polymer exhibiting a viscosity of at least 1 million centistokes. For a multi-layered golf ball, the core, intermediate layer, and/or cover may comprise a siloxane polymer exhibiting a viscosity of at least 1 million centistokes.