Method of processing thermoplastic yarns

Claim 1

A METHOD OF PRODUCING EVENLY AND PERMANENTLY CRIMPED, WAVY OF FLUFFED MULTI-FILAMENT THERMOPLASTIC YARN HAVING IMPROVED AND UNIFORM PHYSICAL CHARACTERISTICS WHICH COMPRISES, CONTINUALLY DRAWING THE YARN FROM A SOURCE OF SUPPLY, CONTINUALLY TWISTING THE YARN FROM FROM SAID SUPPLY, CONTINUALLY PASSING THE YARN AT A SELECTED LINEAR SPEED UNDER UNIFORM TENSION THROUGH A RESTRICTED THERMALLY ISOLATED AND UNFORMLY HEATED ZONE TO UNIFORMLY HEAT THE YARN TO A PRESCRIBED TEMPERATURE TO REORIENT THE MOLECULES OF THE YARN TO THE TWISTED FORMATION OF THE YARN AND YARN-SET THE SAME, CONTROLLING THE SUPPLY OF HEAT ENERGY TO SAID ZONE TO THEREBY MAINTAIN SAID HEATED ZONE UNIFORMLY AT THE TEMPERATURE REQUIRED TOT UNIFORMLY HEAT SAID YARN TO SAID PRESCRIBED TEMPERATURE, CONTINUALLY COOLING THE YARN TO STABILIZE THE SAME AFTER PASSAGE UNDER TENSION THROUGH SAID HEATED ZONE, CONTIUALLY UNTWISTING THE YARN AFTER COOLING THE SAME, AND FINALLY CONTINUALLY COLLECTING THE PROCESSED YARN, THE TENSION UPON THE HEATED YARN BEING CORRELATED TO SAID PRESCRIBED TEMPERATURE OF THE HEAT YARN TO MAINTAIN THE YARN UNDER TENSION ADEQUATE TO PRECLUDE SUBSTANTIALLY ANY DUCTILITY IN THE COOLED YARN.

Claim 2

A METHOD OF PRODUCING EVENLY AND PERMANENTLY CRIMPED, WAVY OF FLUFFED MULTI-FILAMENT THERMOPLASTIC YARN HAVING IMPROVED AND UNIFORM PHYSICAL CHARACTERISTICS WHICH COMPRISES, CONTINUALLY DRAWING THE YARN FROM A SOURCE OF SUPPLY, CONTINUALLY TWISTING THE YARN FROM FROM SAID SUPPLY, CONTINUALLY PASSING THE YARN AT A SELECTED LINEAR SPEED UNDER UNIFORM TENSION THROUGH A RESTRICTED THERMALLY ISOLATED AND UNFORMLY HEATED ZONE TO UNIFORMLY HEAT THE YARN TO A PRESCRIBED TEMPERATURE TO REORIENT THE MOLECULES OF THE YARN TO THE TWISTED FORMATION OF THE YARN AND YARN-SET THE SAME, CONTROLLING THE SUPPLY OF HEAT ENERGY TO SAID ZONE TO THEREBY MAINTAIN SAID HEATED ZONE UNIFORMLY AT THE TEMPERATURE REQUIRED TOT UNIFORMLY HEAT SAID YARN TO SAID PRESCRIBED TEMPERATURE, CONTINUALLY COOLING THE YARN TO STABILIZE THE SAME AFTER PASSAGE UNDER TENSION THROUGH SAID HEATED ZONE, CONTIUALLY UNTWISTING THE YARN AFTER COOLING THE SAME, AND FINALLY CONTINUALLY COLLECTING THE PROCESSED YARN, THE TENSION UPON THE HEATED YARN BEING CORRELATED TO SAID PRESCRIBED TEMPERATURE OF THE HEAT YARN TO MAINTAIN THE YARN UNDER TENSION ADEQUATE TO PRECLUDE SUBSTANTIALLY ANY DUCTILITY IN THE COOLED YARN.