Effect of Weave Parameters on Air Resistance of Fabric Made From Doubled Yarns and With Different Weave Structures

The effect weave parameters such as CFF (crossing over firmness factor), FYF (floating yarn factor), FFF (fabric firmness factor) and fabric geometrical properties, namely, areal density, thickness and porosity on air resistance, is examined. A series of woven fabrics differing only in weave structures and having the common count and fabric sett was produced from three types of doubled yarns, namely, compact/compact, conventional/conventional and compact/conventional. The hybrid combination was produced principally to reduce the cost of manufacturing doubled yarns. Essential data for the fabrics such as CFF, FYF, FFF, mass per unit area, thickness and porosity were determined. Air resistance was determined by performing the standard test KES-F8 API. Analysis of the results with respect to fabrics produced from the compact/compact, conventional/conventional and conventional/compact yarns shows a strong correlation between the air resistance, porosity, CFF, FYF, FFF, mass per unit area and thickness ( R = conventional/conventional 0.97, compact/compact 0.861, conventional/compact 0.974). Thus, in addition to the CFF, FYF and FFF, the thickness should also be taken into consideration for predicting the air resistance of fabrics. It is concluded that in order to predict air resistance, a number of parameters are needed and any conclusion which has been drawn using only CFF and FYF should be treated with caution.