A study is reported of the effects of fibre length and yarn twists on the performance of 2 × 2 rib-knitted fabrics. Wool from a 54s-quality top was given three different fibre lengths by the use of a Rieter converter and then spun into 1/16s-worsted-count (55.5-tex) worsted yarns with various spinning, folding, and cabling twists. These yarns were knitted into 2 × 2 rib fabrics and tested for resistance to pilling, abrasion, and snagging. The analysis of the results showed that yarns of 8½ × 4½ turns/in. (336 × 138 turns/m) single × folding twist are more resistant than others.
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Iredale et al. (1977) studied this question.
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