FALSE-TWIST YARNS—THE RELATIONSHIP BETWEEN YARN AND FABRIC PROPERTIES

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Abstract
The paper describes the changes in yarn and fabric properties which occur when a Courtolon false-twist bulked yarn is progressively modified from a high to a low-stretch yarn. It is shown that crimp rigidity is an adequate single parameter to explain the differences which arise in fabric geometry when knitting such yarns as compared with non-stretch yarns. Differences in handle and texture are also discussed in relation to crimp rigidity. A comment is made on the finishing of such yarns. Finally, a broad survey of yarn type in relation to end use is given. It is concluded that a medium-stretch yarn is the most versatile in knitted outerwear with a low-stretch yarn as a useful addition in more limited applications.

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