of 12 18 g 10 min exxon 1154 and the second with an mfi of 4 g 10 min exxon 2252 at a level of 10 to give 1 colorant in the final polymer fiber this mixture consisting of pp resin and the polymeric colorant additive was extruded using a single screw extruder through monofilament spinnerets with 60 holes the pp melt throughput was adjusted to give a final monofilament denier of approximately 520 g 9000 m the molten strands of filament were quenched in room temperature water about 25 u00b0 c and then transferred by rollers to a battery of airs knives which dried the filaments the filaments having been dried were run across the first of four sets of large rolls all rotating at a speed of between 49 and 126 ft min dependent on draw ratio before entering an oven approximately 14 ft long set to a temperature of 360 u00b0 f after leaving the first oven the filaments were transferred to the second set of large rollers running at a speed of 524 ft min dependent on draw ratio and then into second oven set at a temperature of 360 u00b0 f the final two sets of rolls were both set at 630 ft min and the oven between them was set at a temperature of 300 u00b0 f the individual monofilament fibers were then traversed to winders where they were individually wound these final fibers are thus referred to as the pp monofilaments several monofilament fibers were made in this manner with the following pp red 9803 pp violet 9804 pp blue 9805 and pp green 9807 a colored melt blown non woven fabric was produced using a nordson fiber systems pilot melt blown system the equipment consisted of a u00be single.