Mechanical methods for the reduction of spirality in weft knitted fabrics

A mechanical method for reducing the spirality of single jersey tubular weft knitted
fabrics is described. Initial attempts, using a false twisting device, did not prove successful.
A later, successful method was developed, based on changes in yarn torque produced by a
steaming and untwisting method. The new method is shown to be very effective in reducing
spirality. Microscopic examination of changes in yarn structure, including characteristics of
fibre migration have also been carried out.