Influence of fabric structure on sweater warmth retention

In order to find out the fabric structure influence on the warmth retention property of fabrics, 5 kinds of sample with different stitches such as rib stitch,milano rib stitch,1 + 1 rib stitch,cardigan and half cardigan stitches commonly used in sweater were woven with the same material and different sinking depths,and their stitch length,fabric thickness,air permeability,and warmth retention were tested. The experimental results show that rib fabric is the lightest,and the warmth retention of cardigan stitch is the best and its air permeability is also very good. The warmth retention is influenced by both the thickness and air permeability. As far as fabrics with single loop construction is concerned,in a certain sinking depth range,the thickness plays a leading role in influencing the warmth retention; with the increase of sinking depth,the air permeability becomes the leading role; and the warmth retention/thickness ratio and sinking depth have quadratic polynomial relationship.