A coinjection molding apparatus comprising: an injection molding nozzle (120, 520) having a skin material melt channel for carrying a skin material melt stream and a core material melt channel for carrying a core material melt stream; and a nozzle tip coupled to a downstream end of the nozzle (120, 520) that defines a central skin material melt passage for receiving the skin material melt stream from the skin material melt channel of the nozzle (120, 520), an annular core material melt passage (172, 572) for receiving the core material melt stream from the core material melt channel of the nozzle (120, 520), and an annular outer layer melt passage, characterized in that the annular outer layer melt passage is fluidly connected to the central skin material melt passage via a plurality of laterally extending tunnel channels, wherein a portion of the skin material melt stream received by the central skin material melt passage is directed outwardly to the outer layer melt passage via the plurality of laterally extending tunnel channels,and the nozzle tip includes a tip divider having a plurality of longitudinal bores (192, 592) that make up an upstream portion of the of the core material melt passage (172, 572) for receiving the core material melt stream from the core material melt channel, the plurality of longitudinal bores (192, 592) extend through the tip divider between the plurality of tunnel channels, wherein the plurality of tunnel channels cross the plurality of longitudinal bores (192, 592) of the core material melt passage (172, 572), and wherein the skin material melt stream from the central skin material melt passage, the core material melt stream from the core material melt passage(172, 572), and the skin material melt stream from the annular outer layer melt passage combine either within the nozzle tip or within a gate area prior to entering a mold gate. an injection molding nozzle (120, 520) having a skin material melt channel for carrying a skin material melt stream and a core material melt channel for carrying a core material melt stream; and a nozzle tip coupled to a downstream end of the nozzle (120, 520) that defines a central skin material melt passage for receiving the skin material melt stream from the skin material melt channel of the nozzle (120, 520), an annular core material melt passage (172, 572) for receiving the core material melt stream from the core material melt channel of the nozzle (120, 520), and an annular outer layer melt passage, characterized in that the annular outer layer melt passage is fluidly connected to the central skin material melt passage via a plurality of laterally extending tunnel channels, wherein a portion of the skin material melt stream received by the central skin material melt passage is directed outwardly to the outer layer melt passage via the plurality of laterally extending tunnel channels,and the nozzle tip includes a tip divider having a plurality of longitudinal bores (192, 592) that make up an upstream portion of the of the core material melt passage (172, 572) for receiving the core material melt stream from the core material melt channel, the plurality of longitudinal bores (192, 592) extend through the tip divider between the plurality of tunnel channels, wherein the plurality of tunnel channels cross the plurality of longitudinal bores (192, 592) of the core material melt passage (172, 572), and wherein the skin material melt stream from the central skin material melt passage, the core material melt stream from the core material melt passage(172, 572), and the skin material melt stream from the annular outer layer melt passage combine either within the nozzle tip or within a gate area prior to entering a mold gate. a central skin material melt passage for receiving the skin material melt stream from the skin material melt channel of the nozzle (120, 520), an annular core material melt passage (172, 572) for receiving the core material melt stream from the core material melt channel of the nozzle (120, 520), and an annular outer layer melt passage, characterized in that the annular outer layer melt passage is fluidly connected to the central skin material melt passage via a plurality of laterally extending tunnel channels, wherein a portion of the skin material melt stream received by the central skin material melt passage is directed outwardly to the outer layer melt passage via the plurality of laterally extending tunnel channels,and the nozzle tip includes a tip divider having a plurality of longitudinal bores (192, 592) that make up an upstream portion of the of the core material melt passage (172, 572) for receiving the core material melt stream from the core material melt channel, the plurality of longitudinal bores (192, 592) extend through the tip divider between the plurality of tunnel channels, wherein the plurality of tunnel channels cross the plurality of longitudinal bores (192, 592) of the core material melt passage (172, 572), and wherein the skin material melt stream from the central skin material melt passage, the core material melt stream from the core material melt passage(172, 572), and the skin material melt stream from the annular outer layer melt passage combine either within the nozzle tip or within a gate area prior to entering a mold gate.