28—THE LOSS OF CRIMP AND CRIMP RECOVERY OF WOOL FIBRES DURING HIGH-SPEED WORSTED SPINNING

Abstract
Wool fibres are subjected to severe mechanical actions during the worsted-spinning process, especially on a high-speed system. The loss of crimp and crimp recovery of single wool fibres are examined by measuring the crimp shrinkage of single fibres and the bulkiness of fibre bundles sampled at various stages in a commonly used worsted-spinning system. It is found that the crimp and crimp recovery of single fibres gradually decrease with progress through the spinning system, the reduction being particularly noticeable during carding. Fibre bundles with a high crimp level showed greater bulkiness.

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