Empirical Relations of Crease Recovery and Time

Abstract

A technique for measuring short-time crease recovery is described. Data from this method and from the standard Monsanto method were used to establish several empiri cal relationships between crease recovery and time which give linear plots and which permit extrapolation to very short and very long times. One of these relationships gives a linear plot over the time range of 5 sec. to several days. These relationships lead to several new parameters for characterizing fabric recovery : very short time crease recovery, rate of delayed recovery, and recovery after infinite time. These parameters depend primarily on fiber type and to a much lesser extent on fabric construction.