and injected into the molten polyhexamethylene adipamide at a level of 0 5 parts of the melted additive per 99 5 parts polyhexamethylene adipamide yarn was spun as 332 trilobal filaments with a modification ratio of 1 65 2 3 50 50 cold drawn to 18 dpf and cut to 7 5 inch staple after the drawing process the fibers were observed to have been delustered staple filaments were observed under an optical microscope and found to have long striations of peo plus a dispersion of tio 2 particles when a carpet was made of equal construction and dyed to the same shade as that made in example 2 the carpets were found to be interchangeable polyhexamethylene adipamide of 60 relative viscosity was melted with polypropylene molecular weight of 60 000 at a ratio of 93 to 7 respectively in a screw extruder then fed through a transfer line to a meter pump filter pack and spinneret in a conventional manner yarn was spun as 136 trilobal filaments with a modification ratio of 2 45 and drawn at a temperature below the softening point of polypropylene to 22 dpf after the drawing process the fibers were observed to have a bright luster attributed to the long unbroken striations of the polypropylene polyhexamethylene adipamide of 60 relative viscosity was melted in a screw extruder then fed through a transfer line to a meter pump filter pack and spinneret in a conventional manner during passage of the polyhexamethylene adipamide through the transfer line a pelletized polyethylene molecular weight 2200 was melted melt point of 108 u00b0 c brookfield viscosity of 350 cp at 125 u00b0 c and injected into the molten polyhexamethylene adipamide at a level of.