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:
The present invention is directed to a golf ball with a core and a cover layer surrounding the core. The golf ball preferably has a weight between about 1.45 ounces and about 1.57 ounces and the core preferably has a diameter of greater than about 1.58 inches. Thus, forming a lightweight golf ball with an oversize core. In a ball with a thermoplastic cover, the core preferably has a diameter of greater than 1.61 inches. In a ball with a thermoset cover, the core preferably has a diameter of greater than 1.58 inches. This golf ball is specifically designed to optimize its play characteristics for low swing speed players. The golf ball may further include an intermediate layer disposed between the core and the cover.
摘要:
A golf ball and a method of making a golf ball that includes a center formed from a material including polybutadiene and having a high resilience, at least one cover layer formed of a material including polyurethane, and at least one wound layer of a tensioned material windings between the center and the cover. The polyurethane composition is formed from the reaction product of at least a prepolymer of a polyisocyanate and a polyol, and a diamine curing agent. The polybutadiene composition includes a butadiene polymer with a resilience index greater than about 40 and a weight average molecular weight greater than about 200,000. Such golf balls can have a coefficient of restitution that is optimized for low swing speed players. The wound layer of the present invention may be applied to golf balls having liquid or solid centers to achieve desired golf ball characteristics.
摘要:
The present invention is directed to a golf ball with a core and a polymeric layer reinforced with relatively long fibers. 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. Preferably, this layer comprises relatively long fibers embedded in a thermoplastic matrix to increase the flexural modulus and the impact resistance of the thermoplastic. The fibers may be arranged in random or non-random pattern in the layer.
摘要:
A golf ball comprising a substantially spherical core having an inner sphere comprising a solid outer surface, at least one bonded mantle layer including a plurality of mantle layer parts that are made of a thermoset elastomer and that are arranged around the inner sphere, and an adhesive disposed between and bonding the mantle layer parts to each other; and a cover disposed about the core.
摘要:
The invention relates to a solid golf ball having a diameter of less than about 1.70 inches, including a core formed from a rubber base material having a resilience index of at least about 40 and an outer diameter of at least about 1.58 inches, and a cover disposed about the core formed of a material having a Shore D hardness of less than about 65.
摘要:
An improved golf ball comprising a center having a first hardness, a first layer surrounding the center, comprised of a second material, a second layer surrounding the first layer, comprised of a third material, a third layer surrounding the second layer, comprised of a fourth material, and a cover of a cover material surrounding the third layer wherein each layer has a different hardness.
摘要:
The present invention is directed towards a wound golf ball that includes a wound core surrounded with a cover material. The wound core is formed of a fluid-filled or solid center, and at least one wound layer segment surrounding the center. The wound layer segment includes a first untreated portion, a first impregnated portion, a second untreated portion and a second impregnated portion. The first impregnated portion is impregnated with a first material, such as latex. In one embodiment, the wound layer segment is formed of two layers, each having an untreated and an impregnated portion. Thus, the multi-layered wound layer segment has an impregnated portion between two untreated portions.
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:
Golf equipment including compositions including castable formulations that have low material hardness and increased shear resistance. The compositions may be used in any layer of a golf ball including cores, intermediate layers, and covers and result in high spin rates.