| abstract |
A wool or the like fibre scour including at least one of the following: (a) scouring process wherein the fibre is subjected to an acid extraction process to remove absorbed iron, and thereby to greatly improve the brightness (Y tristimulus value) of the wool; (b) a scouring process wherein a bleaching process is carried out part way through the wet process, following by drying, rewetting, and chemical reduction, therefore stabilising the bleached colour to prevent subsequent reversion in the dyebath; or (c) a scouring process wherein scoured clean fibre is dried and dusted, and then reimmersed in liquors containing detergents and dispersants, thereby effectively removing extra amounts of residual dirt. The scour produces an improved quality of fibres. |