The fleece

下面为大家整理一篇优秀的paper代写范文- The fleece，供大家参考学习，这篇论文讨论了羊毛。羊毛是纺织工业的重要原料，具有良好的弹性、吸湿性、保暖性等特点。但由于价格的原因，羊毛制品很少被采用，所以羊毛的使用仅限于一些高档工业面料。一般采用羊毛加工在精纺纺织品、粗毛、针刺、缝纫等方法生产地毯床垫、针刺地毯夹层、保温材料等产品。这种羊毛的长度不同，具有杂性高、可纺性差、加工难度大等特点，但可通过化学加工来提高质量。羊毛纺织品以其豪华典雅、穿着舒适自然的风格著称，尤其是羊绒有着很高的声誉。

Fleece is an important raw material of the textile industry, it has good elasticity, hygroscopic, good warmth and so on. Sometimes because of the prices, products made in fleece is somehow rarely employed. However, the use of non-woven fabric made of fleece is limited to a number of high-grade industrial fabrics such as needles made of needles, high-grade needles and so on. The general use of fleece processing in the worsted textiles, coarse hair, through the acupuncture, sewing and other methods of production of carpet mattresses, acupuncture carpet sandwich layer, thermal insulation materials and other products. The length of this kind of fleece is different, with high miscellaneous, poor spinability, processing more difficult, the product can be processed by chemical to improve the quality. Fleece textiles with its luxurious elegance, wearing a comfortable natural style is known, especially cashmere has a great reputation. The world's fleece production advantage in the southern hemisphere. Oceania's original fleece production accounts for about 40% of the world's total fleece. Australia mainly produces fine hair, New Zealand mainly produces semi-fine hair, the average annual gross output of more than 5.0 kg, South America, the level of hair production is also higher. Australia, New Zealand, the Soviet Union and China are the major producers of fleece, and their production accounts for about 60% of the world's total fleece production. Fleece is the main exporting countries in addition to Australia and New Zealand, there are Argentina and Uruguay and South Africa.

We usually use fleece made of clothing, snow boots, hat gloves, purses, etc. are made by a professional factory after the tanning of the original leather processing, a soft, beautiful light industrial products, and then supply to the factory to make clothing Snow boots, hat gloves, purses, etc., these processing plants and then processed into leather shoes, suitcases, fur jackets, hats, gloves and other supplies, with beautiful, stylish, flexible, good thermal performance advantages, and then sell to people.

The first to be made of fleece into a strip, made of the main process is: first wash fleece hair, and then mixed refueling, through the roller carding machine to sort out, and then rule the needle comb, the last whole comb and Re-drying.

Scattered hair is made into a strip of fleece by a single cylinder. Most of the fibers in the fleece are hooked, the fibers are repeatedly combed with a cross-knitting machine, and then placed in a combing machine to remove short fibers and residual debris that do not meet the requirements of the process. Fleece drying through the re-drying, remove the oil and stains of the color of the color, and the fiber strip shape, and not easy to shrink. Before and after washing again by the comb machine and draft together, and finally made in line with the standard unit weight combed tops. In the spinning worsted tweed yarn, the general use of tops dyeing. As the dyeing will make the top of the fiber in the uniformity of the impact, but also through the re-comb, that will rule, combing, the whole process to repeat. The combed tops are usually stored for a certain period of time before spinning so that the fiber structure returns to equilibrium.

Spinning

The following is the main process of spinning: the strip of fleece with different types or different colors of fleece mixed, and in proportion to their match, in the machine together, drawn into a mixed fleece. The number of roots can be up to 20 to 24 root. Mixing machine can be composed of two cross-type combing machine with the composition, but also by the two card comb box to form a dedicated machine. The knives are further mixed with the tops, and the fibers are straight and parallel, and the first knuckles are often equipped with draft autolevels.

Roving machine is the comb hair comb combed down to a certain extent, made of roving. Roving divided into twists and twists and turns are two types. There are twist roving machine with a wing screw plus twisting mechanism, so that the roving with a weak twist, is conducive to transport and reduce the accidental draft, but also conducive to the draft when the control of fiber movement. No twist roving machine with twisting mechanism, the higher the speed, the roving cross section round and close. Suitable for spinning fine and curled more short pure fleece fiber. Roving spun out after the storage, so that the fiber to restore fatigue, mixing and combing when the oil and water are fully infiltrated, so that twist shape, reduce or eliminate static electricity, is conducive to reducing the spinning breakage rate and reduce flying hair The Roving in the ring spinning machine spinning into a fine yarn, said combed yarn combed yarn in addition to a small amount for the use of weft, the general must be and yarn, twisted line, winding processing for the double-stranded fleece. The number of combed yarns is generally 36 to 80, and the coefficient is 85. Spinning roving line, due to the thick yarn, the process through the three cross-knitting machine, without roving process, directly in the spinning machine spinning spun yarn, and then twist the synthetic line, and shake into a stranded after dyeing Whole processing. The above is the fleece woven into the process of fleece yarn.

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