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SPINNING A Yarn is usually of substantial length & of a small cross-section. In the cross-section of yarn, there are usually multiple numbers of Staple fibers (short fibers) or Filaments (long fibers) of unlimited length. Spinning is the process of creating yarn (or thread, rope, cable) from various raw fiber materials. Several fibers are twisted […]
Denim fabrics are after all fabrics made with yarns of varying fibre properties and manufacturing processes. The article explains the process of spun yarn manufacturing in the context of denim fabrics manufacturing.
The traveller speed in a ring frame is the main limitation in achieving higher spindle speed because of the frictional resistance of traveller over the ring flange. The design, metallurgy, surface finish and breaking-in of the rings decide the speed at which a ring frame can be run without excessive end breaks. It is important to understand the schematics of the ring travellers in order to achieve maximum productivity from the ring spinning machines.
The ring spinning system is the oldest spinning system that remains dominant because of the high-quality yarns it produces. Ring spinning has various advantages besides disadvantages.It is the most flexible system from the viewpoints of fibers which can be used and the extent of the yarn counts which can be produced.
The results of energy consumption calculation in spinning mills on machines and compressed air.
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.
Detailed analysis of spinning mill setup, cost of production, investments, return on investment, profit calculation, ideal production output calculation etc.