摘要:
A golf ball comprising a core, an intermediate layer and a cover, wherein the intermediate layer has a moisture vapor transmission rate that is lower than that of the cover and, additionally, a primary ingredient of the intermediate layer is made from a material including polybutadiene, natural rubber, butyl-based rubber, acrylics, trans-polyisoprene, neoprene, chlorinated polyethylene, balata, multi-layer thermoplastic films, blends of ionomers, polyvinyl alcohol copolymer and polyamides, and dispersions of acid salts of polyetheramines.
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:
A wound golf ball that includes a wound core surrounded by a cover, wherein the wound layer is at least partially impregnated with a thermoplastic or thermoset material. The wound core is formed of a fluid-filled or solid center, and at least one wound layer surrounding the center.
摘要:
The disclosed invention provides a golf ball including a core and a cover of at least two layers, wherein the at least one cover layer includes an inner cover layer of at least one ionomer resin and an outer cover formed from a polymer blend including at least one grafted metallocene-catalyzed polymer and at least one ionomer neutralized with a metal cation, and optionally, a non-grafted metallocene-catalyzed polymer.
摘要:
The disclosed invention provides a golf ball including a core and a cover of at least two layers, wherein the at least one cover layer includes an inner cover layer of at least one ionomer resin and an outer cover formed from a polymer blend including at least one grafted metallocene-catalyzed polymer and at least one ionomer neutralized with a metal cation, and optionally, a non-grafted metallocene-catalyzed polymer.
摘要:
The invention includes a golf ball having a center, a hoop-stress layer of high tensile elastic modulus material wrapped or wound about the core, at least one layer of a resilient elastomeric material, and a cover of at least one layer. The center in the golf ball can be a fluid with an encapsulating shell or a solid. A binding material can be used in conjunction with the hoop-stress layer to facilitate positioning of the hoop-stress layer around the center for easier manufacturing.
摘要:
The invention includes a golf ball having a core, a hoop-stress layer of high tensile elastic modulus material wrapped or wound about the core, at least one outermost layer of a thermoset material having a thickness of greater than about 0.065 inches. A binding material can be used in conjunction with the hoop-stress layer to facilitate positioning of the hoop-stress layer around the core for easier manufacturing.
摘要:
A composite hockey stick having a tubular hollow rectangular shaft and a blade is disclosed. The shaft comprises an inner layer and an outer layer, each of the inner and outer layers are formed of uni-directional substantially continuous fibers disposed in a hardened resin matrix and wrapped and molded around a middle elastomer layer. A new manufacturing method is also disclosed in which a cured hollow tubular composite hockey stick shaft is inserted between the front and back faces of an un-cured composite hockey stick blade and the blade is then cured in a mold around the hockey stick shaft to form a unitary composite hockey stick.
摘要:
Golf balls having a portion or layer formed from a polymeric composite that preferably includes at least two polymers with distinct microstructures. In particular, the balls can include a polybutadiene having at least about 80 percent cis-isomer polybutadiene blended with a polybutadiene having at least about 50 percent trans-isomer polybutadiene. Methods of preparing such golf balls are also recited.
摘要:
The present invention is directed to an improved golf ball and a method of winding that includes measuring and controlling thread stress directly, rather than maintaining and controlling the level of tension on the threads. The golf ball includes a center, a wound layer that surrounds the center to form a wound core, and a cover that surrounds the wound core. The wound layer is formed of at least one thread, and the wound layer includes a plurality of radially extending sections, each section has a thread stress. The stress within each section is substantially constant, but at least two radially extending sections have different stresses. The method for winding thread onto a golf ball center to form a wound core comprises the steps of measuring a stress within a portion of the thread; winding the thread about the golf ball center while applying a force on the thread to form a plurality of portions with predetermined thicknesses and varying the stress between the portions.