A comparison of the magnitudes of yarn-to-yarn and fabric-to-fabric friction is made. It is shown that yarn friction measured on a capstan (cylindrical) surface is significantly greater than that measured on a flat surface. The greater magnitude of the coefficient of friction in a capstan assembly is ascribed to the effects of experimental variables such as capstan radius, angle of lap, and input tension. The coefficient of friction of fabrics is also shown to be greater than that of their component yarns. Yarns with higher frictional properties yield fabrics whose frictional properties are also higher.
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