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Woolen fabric is made from the fleece of sheep. History of the use of wool Wool was probably the first animal fiber to be made into
cloth. The art of spinning wool into yarn developed about 4000 The first wool factory in England was established in 50 A.D. in Winchester by the Romans. In 1797, the British brought 13 Merino sheep to Australia and started the the country's Merino sheep industry. There are 40 different breeds of sheep in the world producing a rough estimate of 200 types of wool with varying standards. The major wool producers in the world are Australia, Argentina, China and South Africa. The processing of wool involves four major steps. First comes shearing, followed by sorting and grading, making yarn and lastly, making fabric. In most parts of the world, sheep are sheared once a year, in early spring or early summer. The best wool comes from the shoulders and sides of the sheep. This is followed by grading and sorting, where workers remove any stained, damaged or inferior wool from each fleece and sort the rest of the wool according to the quality of the fibers. Wool fibers are judged not only on the basis of their strength but also by their fineness (diameter), length, crimp (waviness) and colour.
After carding, the processes used in making yarn vary slightly, depending on the length of the fibers. Carding length fibers are used to make woolen yarn. Combing length fibers and French combing length fibers are made into worsted yarn. Woolen yarn, which feels soft, has a fuzzy surface and is heavier than worsted. While worsted wool is lighter and highly twisted, it is also smoother, and is not as bulky, thus making it easier to carry or transport about. Making worsted wool requires a greater number of processes, during which the fibers are arranged parallel to each other. The smoother the hard-surface worsted yarns, the smoother the wool it produces, meaning, less fuzziness. Fine worsted wool can be used in the making of athletics attire, because it is not as hot as polyester, and the weave of the fabric allows wool to absorb perspiration, allowing the body to "breathe". Wool manufacturers knit or weave yarn into a variety of fabrics. Wool may also be dyed at various stages of the manufacturing process and undergo finishing processes to give them the desired look and feel. The finishing of fabrics made of woolen yarn begins with fulling. This process involves wetting the fabric thoroughly with water and then passing it through the rollers. Fulling makes the fibers interlock and mat together. It shrinks the material and gives it additional strength and thickness. Worsteds go through a process called crabbing in which the fabric passes through boiling water and then cold water. This procedure strengthens the fabric.
1)It is hard wearing and absorbs moisture. Wool is used to make sweaters, dresses, coats, suits, jackets, pants and the lining of boots.It can also be made into blankets and carpets. Cotton Silk Polyester Nylon |
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