Damage to Wool During Stock-dyeing. I – Investigation of Major Causes

Many of the wool fibres packed into a loose-stock dyeing machine are inevitably bent to a greater or lesser extent, and become set in the bent state during dyeing. This results in damage to the fibres at the point of bending so that they are liable to break during subsequent processing. Excessive liquor pressure has been shown to increase the bending and so the degree of damage. Dyeings at high temperature also tend to increase the damage. Contains errata (JSDC, Vol. 98, July/August 1982, p. 247)