摘要:
The present invention is directed to golf balls having a resilient inner core and outer core made of a material substantially free of fillers. The invention also encompasses golf balls wherein the inner and outer cores are not made of a thermoplastic material. The invention encompasses golf balls having an inner core, an outer core, an inner cover, and an outer cover wherein the inner core is encased by an outer core wherein the outer core has a volume greater than the inner core, inner cover, or outer cover and the inner core is made of a material substantially free of fillers. The volume relationship of the inner core (V12), outer core (V14), inner cover (V16), and outer cover (V18) is represented by the mathematical relationship: V14>⅗(V12+V16+V18), wherein V12≧V18≧V16. Also, the inner core has a specific gravity ρ12, the outer core has a specific gravity ρ14, the inner cover has a specific gravity ρ16, and the outer cover has a specific gravity ρ18, wherein the relationship between the specific gravities is expressed by the mathematical expression: ρ16≧ρ18≧ρ12≧ρ14.
摘要翻译:本发明涉及具有由基本上不含填料的材料制成的弹性内芯和外芯的高尔夫球。 本发明还包括高尔夫球,其中内芯和外芯不由热塑性材料制成。 本发明包括具有内芯,外芯,内盖和外盖的高尔夫球,其中内芯由外芯包围,其中外芯的体积大于内芯,内盖或外壳 盖和内芯由基本上不含填料的材料制成。 内芯(V 12),外芯(V 14),内盖(V 16 C)和外盖(V 14)之间的体积关系 (V 18)由数学关系表示:V 14< S> 3/5(V 12 + V 16< 16< > + V 18),其中V 12 = V 18 = V 16。 此外,内芯具有比重R 02,外芯具有比重r H 14,内盖具有比重r H 16, SUB>,并且外盖具有比重r H 18,其中比重之间的关系由数学表达式表示:r< 16< 16> 18 SUB> = rho 14 SUB> = rho 14。
摘要:
The present invention is directed to a multi-layer golf ball having a core, an intermediate layer and a cover. The intermediate layer has a non-ionomeric composition that includes an ethylene/acid polymer and a non-ionomeric stiffening polymer. The stiffening polymer provides the non-ionomeric composition with a flexural modulus and a hardness that are greater than those of the ethylene/acid polymer.
摘要:
A golf ball with reduced driver spin rate is provided. The golf ball comprises a core, an intermediate layer, and a cover. The intermediate layer is formed from a composition having a flexural modulus of at least about 70,000 psi and a melt flow rate of at least about 4 g/10-min. The composition comprises at least one high-acid ionomer. The intermediate layer further has a thickness of less than about 0.025 inches.
摘要:
The present invention is directed to a golf ball with a core and a polymeric layer reinforced with fillers. Such layer can be the cover, a portion of the cover, an intermediate layer, a portion of the intermediate layer, or any layer in the golf ball. The fillers are selected to provide efficient increases in flexural modulus as a function of weight percentage of filler in the polymeric layer. A preferred filler is barium sulfate.
摘要:
A golf ball containing a layer, which comprises nanosheets of exfoliated graphite dispersed in a polymeric matrix, is provided. Exfoliated graphite is graphite that has been intercalated preferably by an oxidation process, where the atoms or molecules have been inserted into the inter-planar spacing between the layered planes of carbons, and expanded. The intercalated graphite is expanded or exfoliated preferably by brief exposure to high heat to expand the thickness of the graphite. The expanded or exfoliated graphite is then mixed with monomers and polymerized in situ to form a polymer with a network of nanosheets of the exfoliated graphite dispersed therein. The exfoliated graphite advantageously retains its nanostructure during the polymerization process. The resulting golf ball layer comprising such polymer with nanosheets of exfoliated graphite exhibits superior tensile strength, low permeability to gas and increased impact strength. A golf ball comprising a water vapor barrier layer, wherein the water vapor barrier layer comprises a foil of compressed exfoliated graphite layer, is also provided. The expanded or exfoliated graphite is compressed together into flexible thin sheets or foils. Such sheets may also be made with a polymeric binder.
摘要:
A golf ball comprising a solid core and a cover disposed about the core, wherein the core is formed from a polybutadiene blend comprising a) a first polybutadiene having a first Mooney viscosity between about 50 and about 150, and b) a second polybutadiene having a second Mooney viscosity between about 30 and about 100, wherein the first Mooney viscosity is greater than the second Mooney viscosity, and wherein the blend has a greater weight percentage of the first polybutadiene than that of the second polybutadiene.
摘要:
A long distance, low initial spin golf ball is disclosed. The golf ball includes a high moment of inertia core assembly, which may comprise a low specific gravity core and an optional intermediate layer. This sub-assembly is encased within a high specific gravity cover with Shore D hardness in the range of about 40 to about 80. The core is preferably made from a highly neutralized thermoplastic polymer with its specific gravity reduced, and the cover preferably has high specific gravity fillers dispersed therein. The cover is preferably made from thermoset polyurethane or polyurea.
摘要:
Golf balls consisting of a dual core and a dual cover are disclosed. The surface hardness of the outer core layer is greater than the material hardness of the inner cover layer, and is preferably 75 Shore C or greater.
摘要:
A golf ball comprising an inner core formed from a substantially homogenous composition such that the geometric center hardness is 56-80 Shore C and the outer surface hardness is 50-75 Shore C. An outer core layer has an outer surface having hardness of 85-98 Shore C and an inner surface hardness of 68-78 Shore C and being formed from a second homogenous rubber composition. A cover layer is disposed about the outer core layer. The hardness of the second outer surface is greater than the hardness of the inner surface to define a positive hardness gradient of +7 to +30 Shore C, and the hardness of the first outer surface is lower than the hardness of the geometric center to define a negative hardness gradient of −1 to −15 Shore C.
摘要:
Golf balls comprising a multi-layer core and a cover are disclosed. The multi-layer core comprises a thermoset rubber inner core, a thermoplastic first intermediate core layer, a thermoplastic second intermediate core layer, and a thermoset rubber outer core layer.