Spinning Process - Model Of Optimum Cotton Mixing

[...]... case of chute feed system or wound in the form of a compactly built lap with minimum lap rejection Intensive de-dusting of cotton fibres to extract micro- dust in order to improve the working of opened spinning m/c Fibre recovery from the waste produced by the various processes during the conversion of fibre to yarn in order to reduce the consumption of raw material Technological performance of a...Objects of blow room process: To open the compressed layer of bale of cotton or any staple fibres with minimum damage to the fibres To remove the impurities like sand, seed, bits, neps & short fibres present in the cotton with minimum loss of lint by opening & blending To effect a through blending with minimum neps formation To convert the mass of cotton fibres into a uniform thick sheet of cotton. .. the smaller the tufts It follows that dust elimination takes place at all stages of the spinning process as shown in figure Fig 5 – Dust removal as a percentage of the dust content of the raw cotton (A) at the various processing stages (B): 1 - 5, blowroom machines; 6, card; 7, draw frames; (a) filter deposit; (b) licker-in deposit; I, dust in the waste; II, dust in the exhaust air Blending: intensive... 1/4, at most 3/4 and usually 1/3 to 1/2 of the opening assembly The grid has a major influence on the cleaning effect via: the section of the bars; the grasping effect of the edges of the polygonal bars; the setting angle of the bars relative to the opening elements; the width of the gaps between the bars; the overall surface area of the grid Figure:Two-part grid The following elements can be... each carrying profiled bars The beaters are arranged on a line inclined upward at 45° Elimination of impurities takes place during the continual passage of the material over the grids arranged under the rollers Air Jet cleaner: Object of this cleaner is to open and clean the cotton, but this cleaning unit introduces the idea of dirt separation from cotton by air force The function of the Kirschner... can be removed very readily in the subsequent processes •The UNIfloc is designed for output of up to 1 400 kg/h (carded sliver) •Bales are laid down over a length of 7.2 to 47.2 meters •The UNIfloc can process up to 4 assortments simultaneously •The width of the take-off unit can be selected between 1 700 and 2 300 mm Uniclean B12 The UNIclean B 12 pre-cleaner cleans the microtufts in the first cleaning... to operate within it Figure: Degree of cleaning (A) as a function of the trash content (B) of the raw material in % Normally, fibers represent about 40 - 60% of blowroom waste Since the proportion of fibers in waste differs from one machine to another, and can be strongly influenced, the fiber loss at each machine should be known It can be expressed as a percentage of good fiber loss in relation to total... opening Two spring systems, facing each other like the jaws of a pair of tongs, are parted and dropped into the feed material and are then closed before being lifted clear They grasp the material like fingers This type of gripping is the most gentle of all methods of opening, but it produces mostly large to very large clumps of uneven size This type of opening device is therefore no longer used 3 Rotating... clean the cotton and prepare the cotton for air jet section The tuft of cotton from the kirschner beater section is entered in to the aero dynamic constricting duct The air current from the booster fan carry the cotton toward the bend in the duct The duct makes a sharp turn of about 120 degree Axi flow Cleaner: This is known as dual roller cleaner This machine has two beaters having 6 to 8 rows of spikes... for card Kirschner beater: In this type of beater, instead of beater bars, pinned bars (pinned lags) are secured to the ends of the cast-iron arms The relatively high degree of penetration results in good opening Kirschner beaters were therefore often used at the last opening position in the blowroom line Beaters with pinned bars Modern Kirschner openers are often designed as closed rollers rather . yarn: Mixing and blending of cotton fiber in blow room Mixing: If different grade of same fibers are kept together, then it is called mixing. Types of Mixing: 1. volume mixing 2. weight mixing 3 stages of the spinning process as shown in figure. Dust Removal: Fig. 5 – Dust removal as a percentage of the dust content of the raw cotton (A) at the various processing stages (B): 1 - 5,. blending. Types of Blending: 1. hand stock blending 2. bin blending 3. lap blending 4. card blending 5. draw frame blending Model of optimum cotton mixing: The program is written on the basis of principles