Abstract: 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.

Abstract: A hot sprue bushing is provided for transporting plasticized material from an injection nozzle to a mold cavity while controlling the temperature of the plasticized material. This hot sprue bushing comprises an elongate body having a head, a stem and a distal end portion, and a through passage extending therethrough from end to end through the head, stem and distal end portion of the body for transporting plasticized material through the hot sprue bushing from the heat to the distal end portion thereof. The distal end portion of the body bears a first engaging device, and the head of the body is of greater cross-section than the stem so that the head provides a first abutment surface extending outwardly of the stem. An electrically powered heater is wrapped around the stem of the head in heating conducting relationship therewith.