Process for the production of high bulk yarns

Claim 1

PROCESS FOR THE PRODUCTION OF HIGH BULK YARNS HAVING A REDUCED TORQUE EFFECT, COMPRISNG POSITIVELY FEEDING A YARN TO A FIRST FALSE TWISTING ZONE, APPLYING TO SAID YARN A FALSE TWISTING IN ONE DIRECTION AND SETTING THAT FALSE TWIST BY ALLOWING IT TO RUN BACK INTO A PRECEEDING SETTING ZONE, THEN POSITIVELY FEEDING THE YARN TO A SECOND SETTING ZONE AND A SECOND REVERSE TWIST FALSE TWISTING ZONE WHILE PERMITTING THEREVERSE FALSE TWIST TO TUN BACK INTO SAID SECOND SETTING ZONE THE AMOUNT OF THE REVERSE FALSE TWIST BEING LESS THAN THAT OF THE FIRST FALSE TWIST AND THE SECOND SETTING ZONE BEING AT A LOWER TEMPERATURE THAN SAID FIRST SETTING ZONE, AND THEREAFTER POSITIVELY FEEDING SAID YARN TO A TAKEUP PACKING AND COLLECTING THE YARN, THE YARN IN EACH OF SAID SUCCEEDING FEEDING STEPS BEING FED AT A LOWER APEED THAN IN THE PRECEDING FEEDING STOP, THE YARN SPEED TO SAID SECOND SETTING ZONE BEING ABOUT 2% LESS THAN THE SPEED AT WHICH THE YARN IS FED TO THE FIRST SETTING ZONE.