摘要:
The present invention is directed towards a method of forming a multilayer golf ball which comprises a core, an inner cover layer and an outer cover layer. The steps include forming a golf ball core; molding an inner cover layer around said golf ball core with a material having a first shore D hardness; and casting an outer cover layer around said inner cover layer and golf ball core with a thermoset material having a second shore D hardness less than the first. The core is comprised of a center made from a first rubber based material and an outer layer formed from a second rubber based material. Preferably, the first rubber based material has about 15 to 25 parts of a crosslinking agent per hundred parts of rubber and the second rubber based material has about 20 to 40 parts of a crosslinking agent per hundred parts of rubber.
摘要:
A golf ball comprising a core and a cover disposed about the core, wherein the core comprises a center and at least one outer core layer adjacent the center, and the cover comprises at least one inner cover layer and an outer cover layer; wherein the center has an outer diameter of 0.375 inches to 1.4 inches; the outer core layer has an outer diameter of 1.4 inches to 1.62 inches; the inner cover layer has an outer diameter of 1.58 inches or greater and a material hardness of 72 Shore D or less; and the outer cover layer has a material hardness of 55 Shore D or less; and wherein the center has a first hardness, the outer core layer has a second hardness greater than the first, and the inner cover layer has a third hardness greater than the second.
摘要:
A golf ball comprising a core and a cover disposed about the core, wherein the core comprises a center and at least one outer core layer adjacent the center, and the cover comprises at least one inner cover layer and an outer cover layer; wherein the center has an outer diameter of 0.375 inches to 1.4 inches; the outer core layer has an outer diameter of 1.4 inches to 1.62 inches; the inner cover layer has an outer diameter of 1.58 inches or greater and a material hardness of 72 Shore D or less; and the outer cover layer has a material hardness of 55 Shore D or less; and wherein the center has a first hardness, the outer core layer has a second hardness greater than the first, and the inner cover layer has a third hardness greater than the second.
摘要:
The present invention is directed to multi-layer golf balls having at least three core layers, at least one cover layer, and at least one intermediate layer between the core and the cover layer that acts as a vapor barrier. Advantageously, the at least three core layers have a hardness gradient that increases toward the at least one intermediate vapor barrier layer.
摘要:
A golf ball mold having a non-planar parting surface that is formed a computerized modeling system such as CAD or CAE in combination with a CNC machine tool. The mold is comprised of hemispherical upper and lower mold halves being removably mated along the non-planar parting line that is distinct from the position corresponding to an equator line of the spherical cavity. Each mold half having an interior cavity detail for creating a pattern of dimples on the cover of the golf ball, wherein at least one dimple lies across an equator of the ball and the parting line passes around and between interdigitated dimples without intersecting them, therein creating a “seamless” golf ball. The non-planar surface of the upper mold half comprising at least three true sprues for venting of air and excess material; and at least three false sprues for the placement of tabs on the cover for use in aligning the golf ball as it is spun in a buffing machine.
摘要:
A method of forming a water vapor barrier layer to a core of a golf ball is provided. The method includes placing the core of the golf ball into a vapor barrier composition, withdrawing the lifting device, and spinning and optionally oscillating the core within the composition for a time sufficient for the composition to form a layer on the core. The present invention also provides an apparatus that can be used to form a water vapor barrier layer on the core.
摘要:
A nozzle for an injection molding machine is disclosed. The nozzle includes a nozzle body, an inner nozzle, and an outer nozzle. The nozzle defines two independent flow paths therethrough. The nozzle can simultaneously discharge two materials. A method of using the nozzle and a resulting golf ball product are also disclosed.
摘要:
An improved mold frame for making a fast thermal response mold is disclosed. The mold frame has a plurality of rows with each row having a plurality of cavities. The mold frame is constructed of two half-molds, each half-mold containing an upper and lower plate vacuum brazed together to form flow channels that allow thermal mediums to pass in close proximity to the cavity. Without any direct contact between the flow mediums and the cavities the necessity for O-rings is eliminated. Without O-rings the compression molding of thermoplastic materials may be at temperatures greater than 300° F.
摘要:
A method for making a multilayer golf ball including a solid center having a center hardness, a plurality of laminates cut into a plurality of shapes formed around the center to create an inner ball, and a cover formed around the inner ball, wherein the plurality of layers can include at least a first layer having a hardness greater than the center hardness and a second layer having a hardness greater than the first layer hardness, and optionally a third layer disposed between the first and the second layers having a hardness greater than the first layer hardness.
摘要:
A multilayer golf ball including a solid center having a center hardness, a plurality of laminates cut into a plurality of shapes formed around the center to create an inner ball, and a cover formed around the inner ball, wherein the plurality of layers can include at least a first layer having a hardness greater than the center hardness and a second layer having a hardness greater than the first layer hardness, and optionally a third layer disposed between the first and the second layers having a hardness greater than the first layer hardness.