Abstract: An improvement is provided in an integrated process for the production of textured multifilament yarn from a fiber-forming, thermoplastic, linear, high-molecular-weight polymer of caprolactam by the combination in immediate succession of the procedural steps of melt spinning, drawing, texturing, and packaging. The present improvement combines the following procedural steps with those of melt spinning, drawing, texturing, and packaging:(1) Lubricating the filamentary polymeric material from the melt spinning step by applying thereto a lubricating composition containing (a) a lubricant, and (b) solvent in an amount of from 0 to 20 percent by weight of the lubricating composition;(2) Pre-tensioning the lubricated melt spun filamentary polymeric material beyond its elastic limit between a first godet at room temperature, viz. between about 15.degree. and 25.degree. C.; followed by(3) Pre-heating the pre-tensioned filamentary polymeric material on a second godet to a temperature between about 40.degree. and 70.

Abstract: A traveling yarn is introduced into a yarn treatment chamber, such as a texturing device, wherein essentially standard treatment temperatures are being employed, the yarn traveling at standard speeds and temperatures for the treatment process carried out in the treatment chamber. The yarn is caused to pass through, out of, and away from the yarn treatment chamber.This is accomplished by first capturing the traveling yarn and positioning the captured traveling yarn in front of the inlet orifice of the yarn treatment chamber at a tension of 0.025 gram/dtex to 0.35 gram/dtex. Then the captured traveling yarn is cut and simultaneously directed into and through the yarn treatment chamber by means of an external propelling fluid. Finally, the treated yarn is conveyed away from the yarn treatment chamber.