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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.
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 Air-Jet spinning is very sensitive to the fiber length and fiber length distribution(short fiber content) of the material being processed. The amount of wrapping twist varies depending upon the length of the wrapping fibers as only a part of the total extent is utilized to wrap the core fibers. Wrapping the fibers shorter 12.5 mm practically do not make a significant contribution to the strength of the yarn.Air-jet Spinning is suitable for processing medium and long staple comber cotton fibers a
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.
Textile knot yarn production, Faults, and remedies, Uniformity ratio, Micronnaire and maturity, Fiber maturity
Doubling reduces unevenness of single yarns and the strength of the doubled yarn is correspondingly better than the single yarns. In this article Ring Doubling, Two-For-One (TFO) twister, quality required by yarn to get best-doubled yarn are discussed.
Specifications of automatic cone winding, checking of reeling frequently, reeling doff weight, reeling calculations
Transformation of textile materials from fibers passing through various processes and enhancements and become a product for the end user explained briefly.
Dyeing can be performed using continuous or batch processes. Yarn dyeing is used to create interesting checks, stripes, and plaids with different-colored yarns in the weaving process. Substances which cause these changes are called dyestuffs.