extent of compression of the fabric in this respect both fabrics produced from drawn yarns shows greater compressional properties in most cases the increase in a 18s fabric compressional properties is much less than that in a 16s fabric this difference is believed to be related to the different extent of drawing and thus the generated different amount of yarn diameter decrease different degree of yarn rigidity increase and different increase pitch in fabric thickness in the case of a 18s rotor spun yarn a 1 3 drawing ratio leads to a slimmer yarn and less rigidity increase than with a 16s yarn under a 1 2 drawing ratio and thus the increase in thickness is not so prominent as revealed by table 6 therefore the enhancement in compressional properties is quite subtle fabric draping characteristic is a property closely related to the bending rigidity of the constituent yarns and of the fabric itself as well as fabric thickness it is found that this property reduces significantly after tensile drawing processing see fig7 this property change is brought about by the increased yarn bending rigidity and confirms the improvement in yarn bending rigidity furthermore the increase in thickness helps a reduction in this property the draping property decrease phenomenon is particularly useful since a soft hand is always a concomitant of higher draping property the described tensile drawing processing enables these two extremely incompatibles to coexist in one fabric this could lead to new appraisal in fashion design especially in the case of knitted fabrics hitherto poor drape properties limits application mainly to underwear and skirting in any event this changed property helps for fabric dimension retention it is well known that rotor spun yarn.