The results of energy consumption calculation in spinning mills on machines and compressed air.

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In order to obtain the specifc energy consumption of any yarn, each an every machine in the spinning operations right from the bale opener and the approach should be repeated for the rest of the machine/step.

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In order to obtain the necessary information about energy consumption of a specific spinning mill, one which is able to spin every kind of staple fiber (i.e. cotton, linen, polyester, viscose) in a wide count range using both ring and open-end systems to be chosen.

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The cost of yarn consists of several factors such as raw material energy or power, labor, capital etc. The cost of yarn excluding raw material is termed manufacturing cost. The share of the factors in manufacturing cost changes according to the yarn properties, machine operational properties and economical situation of the spinning mill.

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Yarn making from staple fibers involves picking (opening, sorting, cleaning, blending), carding and combing (separating and aligning), drawing (re-blending), drafting (drawing into a long strand) and spinning (further drawing and twisting). Silk and synthetic filaments are produced by a less extensive procedure. Current high-production yarn-making operations are performed on integrated machines that perform this entire sequence as one combined operation.

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The first functioning of rotor spinning, machine was presented at the ITMA in 1967.Yarn spinning according to the rotor spinning principle predominates for all nonconventional spinning methods.It omits the step of forming a roving.After drafting, the sliver is fed into a rotary beater.This device ensures that the fibers are beaten into a thin supply which enters a duct and gets deposited on the sides of the disc(rotor).The transportation of the fibers is achieved through air currents.

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Blow room is the starting of the spinning operation where the fiber is opened, cleaned, mixed, micro dust removed and evened thus passed to carding machine without increasing fiber rupture, fiber neps, broken seed particles and without removing more good fibers. The basic functions of blow room are opening, cleaning, dust removal, blending and evenly feeding the material on the card.

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Carding is a mechanical process that breaks up locks and unorganized clumps of fiber and then aligns the individual fibers so that they are more or less parallel with each other. Carding can also be used to create blends of different fibers or different colors. Carding plays a crucial role in all spinning cycles particularly in the woolen spinning cycle, in which it incorporates different functions, all essential in order to obtain the level of quality required for the product.

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