Effect of Stitch Length on Some Properties of Cotton 1×1 Rib Knitted Fabrics

Abstract

For dry relaxed cotton 1×1 rib knitted fabrics is investigated experimentally the effect of stitch length on the porosity P(%), the air permeability V(cc/cm2/sec), the thermal retaining property H(%), the bending length L(mm), the breaking strength S(kgf), the elongation E(%), and on the dimensional properties (Uc; =Cu; ×lu;, Uw; =Wu; ×lu;, Us; =Uc; ×Uw;, Uc; /Uw; =Cu; /Wu; and the ratio t/l, where Cu; and Wu; are the course units/unit fabric length and wale units/unit width, lu; is the stitch length in cm, t the fabric thickness in cm and l the loop length in cm). Us; is approximately constant and independent of the stitch length. When the stitch length increases, Uw; , P(%), V(cc/cm2/sec) and E(%)'s in course, 22.5° and 45° directions increase, and Uc; , Uc; /Uw; , the ratio t/l, H(%), L(mm) and S(kgf) in each direction, and E(%)'s in wale and 67.5° directions decrease.