Theory on Heater Cross-Over in the False-Twist Texturing Operation

Abstract

A simple mathematical theory is proposed that suggests that heater "cross-over" in the false-twist texturing process is caused by an upset in the friction-tension balance of a threadline on the primary heater. This theory predicts that there are a number of finish and texturing variables that could be associated with heater cross-overs, and these predictions are consistent with many experimental observations of cross-over behavior that have been observed in practice. Further fundamental studies are required to test the theory and to achieve better understanding of heater cross-over mechanisms.