Wool classing

From Free net encyclopedia

Wool Classing is a profession designed for the sole purpose of grading the spinning capacity or designated purpose for the wool produced. This is carried out by examining the characteristics of the wool in its raw state. The characteristics which a wool classer may examine are:

Wool crimp - The number of bends per unit length along the wool fiber indicates spinning capacity of the wool. Fibers with a fine crimp usually have a small diameter, and can be successfully spun into fine yarns, with great lengths of yarn for a given weight of wool, and greater market value. Fine fibres may be utilised in the production of fine garments such as men's suits whereas the coarser fibres may be used for the production of carpet and other sturdy products.

Wool Strength (also known as tensile strength) determines wool's ability to withstand vigorous cleaning and manufacturing. The weaker wools are generally sent for production of felt etc where the processing is not as extensive and harsh.

Wool color - Indicates whether wool is able to be dyed in light shades. Color may be graded depending upon the natural color, impurities and various stains present. Severely stained wool decreases prices dramatically.

The parts of wool taken from a sheep are graded separately. The fleece forming the bulk of the yield is placed with other fleece wool as the main line, other pieces such as the neck, belly and skirtings (inferior wool from edges) are placed together and sold for such purposes where the shorter less inferior wools are required. (for example fillings, carpets, insulation) The Crimp determines which grade the fleece will be placed into. This process enables primary producers to place wool into bales to send for sale, thus maximising returns by selling wool according to quality and weight.