Loose wool scouring

A third approach to the application of insect resist finishes is to combine the finish with spinning lubricants and then to apply the combination to loose wool prior to spinning. This method of finish application produces yams with only a superficial treatment with much lower fastness than applications made during dyeing or scouring. 

Carbonising is done to remove the cellulosic impurities from wool by treatment with acid or acid producing salts. Carbonising may be carried out in loose wool or on piece goods after scouring. However, it is common practice to carbonise worsted piece goods as well as woollens. 

The raw wool is also scoured by some unconventional machines [25], In the Fleissner machine loose wool is conveyed through the bowl by a series of suction drums (Fig. 5-18). The flow of liquor through the wool and into the three suction... 

Up to 20 drums may be used in series, although commonly about 5 would be employed. Normally, drums are supplied in the range of 1.4-2.0 m diameter, with widths up to 6.0 m. The principal operational problem with these dryers for loose fibers relates to the difficulty of securing a feed of uniform openness and thickness. Scoured fleece wool, for example, after passing through the final squeeze roll at the outlet of... 

Tubbs, J. 1976. Drying Characteristics of Loose Scoured Wool, BE Representative of Chemical Engineering, University of Canterbury, Christchurch, New Zealand. 

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