Weaving
There are many differences between weaving worsteds and woolens, but for our purposes we may consider the process the same, as in a general way it is. Some cloths are woven with a cotton warp and a woolen yarn filling, the warp being carefully concealed. Woolen cloths are more frequently woven with a backing than worsteds. This means that either there is a double warp, a double weft, or both. The object of backing is usually to add strength and warmth to the material, and the lower side is therefore often woven of coarser yarn. In some cases, however, notably in travelling rugs, the backing may be just as elaborate as the face, and this necessitates a rather intricate mounting process.
Carpets
Carpet weaving is one of the large branches of the woolen industry, and for this purpose the coarsest and longest fibred wools (common, braid, and carpet wools) are usually employed. These wools readily lend themselves to the manufacture of a coarse thick yarn, which in turn produces a thick, durable material. The thickness of a carpet is known as the pile.
Finishing Important in Woolens
Whereas we saw that the worsted cloth was practically finished when it left the loom, this is not the case with woolens. Oftentimes it would tax an expert to identify the finished goods with the loose and altogether different material produced by the weaver. Some fine woolens, it is true, are scarcely altered more than worsteds, but in most cases the finishing operations are in this industry a major rather than a subsidiary stage of manufacture. The reader may have been puzzled at the divergent lines along which woolen and worsted yarns are manufactured, and at a loss to account for the reasons. The cause is precisely this, that the worsted manufacturer aims to produce a cloth that is completed when woven, while the woolen maker wants his loom to turn out a material that will readily adopt a great variety of finishes.
Burling
The first finishing operation, which applies also to worsteds, is the examination of the piece for imperfections and the removing of them by hand. The piece is then scoured to get rid of dirt, and, where the finish is complicated, this may be repeated several times.
Fulling