member 43 and hence the nozzles are caused to be moved closer to or farther away from the insulated wire 21 the movement of the nozzles toward the path of travel of the insulated wire can be seen by viewing the sequence of fig6 and 7 each pivotally mounted sealing member is a laminate comprising a sealing material and a backing material so that the member 43 creates a seal against the tube moving rotatable member 43 also the moveable member 43 is sealed along a peripheral edge surface that overlaps the fixed member 41 the nozzles 46 46 also are advantageous from another standpoint important to the uniform coating of the plastic insulation is its improved stability against undesired undulations as it is advanced through the applicator apparatus it has been found that because of the spray patterns emitted from the nozzles 46 46 the plastic insulated wire is substantially free of any undulations from its desired path it should be observed from the drawings that the nozzles 46 46 are disposed between the manifold head 42 and the takeup it has been found that the coloring operation is enhanced by disposing a second plurality 51 of spray nozzles see fig8 between the manifold head 42 and the extruder 28 each of the nozzles of the second plurality 51 is designated by the numeral 50 unlike the nozzles 46 46 each of the nozzles 50 50 provides a solid cone shaped spray pattern 53 of the colorant material each nozzle 50 provides a uniform spray of medium to large size droplets such a nozzle is commercially available for example from the spraying system company of wheaton illinois under the designation.