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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.
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.
Two types of energy can be used in a specific spinning mill; electrical energy and thermal energy. Machines, air conditioning, lamps used for illumination and compressors consume electrical energy while the thermal energy is consumed by air conditioning and processes such as fixation of yarns.
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.
The chief function of the simplex frame is the attenuation of sliver. Insertion of protective twist in order to hold the fine strand of silver. Winding of roving into a package that can be transported, sorted, donned on ring spinning machine.After carding the cotton is passed through draw frames. The draw frame draws the cotton into thick strands.These are then spun into thinner strands on the simplex frame spindles. The output of the simples frame is fed to the ring frame spindles which complete t
The cop which is prepared in the ring frame is not suitable for further processing. So the yarn is converted into the shape of a cone which is prepared in the winding. Practical experience shows that winding process alters the yarn structure. The factors which affect the yarn structure during winding are bobbin geometry, bobbin unwinding behavior, and binding speed. This phenomenon does not affect the evenness of the yarn but it affects the properties of the yarn such as thick and thin places.
The input of roving frame is silver that comes from draw frame section where only parallel of comber sliver. The roving section reduces the linear density of draw frame silver by drafting. After reducing the linear density the silver is transfer into roving (a thin form of rope). This is the first stage where the twist is inserted for making a yarn in a spinning mill. The output of this section is roving which is wind on a bobbin and this is suitable for the further process. Here in this section describes
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.
The new spinning systems clearly avoid the limitations produced by the twist insertion mechanism. It is possible to increase the twist insertion rate and the yarn production speed quite considerable. Various spinning techniques specifications.
Objectives of speed frame, operations involved in speed frame