This International Standard specifies a method for determining the angle of recovery of fabrics from creasing. The results obtained by this method for textile fabrics of very different kinds cannot be compared directly.
Attention is drawn to the fact that for some types of fabrics, the limpness, thickness and tendency to curl of the specimen may give rise to very ill-defined crease recovery angles, and therefore an unacceptable lack of precision in making measurements. Many wool and wool mixture fabrics come under this heading.
DS/EN 22313:1993 history
1993DS/EN 22313:1993 Textile fabrics. Determination of the recovery from creasing of a horizontally folded specimen by measuring the angle of recovery