Abstract
This article discusses the effect of temperature on the twisting moment of twisted nylon and some other twisted yarns.
If heated twisted nylon, acetate and Terylene yarns are subjected to cooling at a given temperature in the one-time heating process, the twisting moment decreases with the decrease in temperature. In the process of re-heating following cooling, the moments of these yarns increase-until the temperature at which cooling was started is reached-along the moment-temperature curves which are identical with the curves representing the cooling effect. Above that temperature the moments change along the curves showing the effect of one-time heating.
On the other hand, the effect of temperature on twisted viscose rayon yarn is represented by a single moment-temperature curve.
These fundamental properties in the heat-setting of twist are discussed in this article.
