An open-end rotor spinning machine which operates at rotor speeds higher than 100,000 rpm is constructed so that the critical system rotational speed is higher than the 100,000 rpm operating rotational speed. Yarn spinning production consists of Compact, Ring, MVS, OE, Siro, Slub and Melange. they are deposited inside the rotor groove along with the other individualised and combed fibres. Encouraging results were obtained with slight addition of polyester fiber with respect to yarn tensile strength, elongation and total imperfection as these properties were improved with increasing ratio of polyester fiber. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. US Patent References: 3839764: REMOVAL OF TRASH IN THE OPEN-END SPINNING OF TEXTILE YARNS: 1974-10-08: Clayton: 15/301: 3777329 : OPEN-END TEXTILE SPINNING MACHINES: 1973-12-11: Lane: 15/301: 3628213: VACUUM CLEANING APPARATUS TO REMOVE INDUSTRIAL WASTE FROM MACHINERY: 1971-12-21: Ramo: 15/301: 2976556: Apparatus for the … out on Uster Tensorapid-4 and Uster Tester-4 according All the foreign bodies in the fibrous assem, rotor. Ishtiaque et al, ... Higher rotor speeds results into improper fiber straightening in the transportation tube and rotor groove due to short contact time before yarn formation resulting into reduced yarn strength. (98:2) and (95:5) were investigated at all linear densities. 7. It was invented and developed in Czechoslovakia in Výzkumný ústav bavlnářský / Cotton Research Institute in Ústí nad Orlic í in 1963. Sliver from the card goes into the rotor, is spun into yarn and comes out, wrapped up on a bobbin, all ready to go to the next step. Investigations have been made to explore the Team of in house experienced engineers, machinists and fabricators 4. For example, rotor spun yarns have low tensile strengths due to their structure, and successful rotor spinning is still restricted to the coarse-and medium-count range, ... Because of ring spinning's versatility in terms of fiber types that can be handled, the range of counts that can be spun and the quality of the yarns produced, it is still the standard against which other systems of spinning are judged. For short staple spinning, most rotors are 31 to 56 millimeters in diameter and may contain a shallow "U" or "V" shaped fiber … Precise adjustability contributes to the needed efficiency. ii) Bold letters indicate the variable param, and the total number of ends down is observed during the study. A comparison between the qualities of open-end- and ring-spun yarns produced from Egyptian cottons is reported. <<
Yarns for terry fabrics. This study was planned to investigate the influence of small share of polyester fiber on properties of low twist rotor spun yarn especially yarn strength. Based on experimental findings negative effect on coefficient of mass variation and an insignificant influence on hairiness were observed. Data on spinning trials are given. parameters also decrease as the card draft increases. Over 150 open-end spinning mills in Tamil Nadu have downed shutters for five days from Wednesday protesting against hike in raw material prices. such as single yarn strength, elongation, mass The open-end friction spinning machine according to FIG. Twisting Element: Rotor 5. Fine count limits are fairly similar. Ring and rotor (open-end) spinning are quite popular for spinning cotton and cotton blends. It was invented and developed inCzechoslovakia in Výzkumný ústav bavlnářský / Cotton Researching Institute in Ústí nad Orlicí in the year 1963. 1. The terms and defintions given in this International Standard have been confined to those parts of the spinning machine which are specific to open-end yarn production technology. finisher draw frame sliver has significant impact on rotor deposition, end breakage rate and yarn quality. H��Wێ�F����~�^�;/�E��3�&���E�$������/)���2���r�ԩ77 xDR�y�����n���-%�����(�?s�����>��ן��$U�d���oM�ֲZ��M� �W���
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���E�MU֒�k��T����J}Z���R�vwyrA>ݿv�F��n���Od!�xh�Lt_�Plט���< With increase in opening roller speed at a particular rotor diameter, the surface-clustered thick places increase, but with the increase in rotor diameter, the surface-clustered thick places initially increase and then decrease. 6. hairiness was observed at increased rotor speeds. Saurer Schlafhorst, Germany. *1 Depending on the application, top and bottom covers can be reversed. yarn spinning, vortex spinning, air-jet spinning, vortex yarn structure Introduction Yarn structure is one of the primary factors which control the properties of spun yarns. It is observed that the high moisture content in the feed sliver decreases the end-breakage rate of grey cotton, but for dyed cotton the running performance deteriorates with the increase in moisture content. The energy requirement per one kilogram of ring-spun yarn varies between 3.49 and 3.62 kWh/kg, whereas in the case of open-end spinning, energy requirements vary between 2.44 and 2.58 kWh/kg of yarn. Ring and rotor (open-end) spinning are quite popular for spinning cotton and cotton blends. 12 0 obj
The paper addresses the optimization of various machine parameters in rotor spinning system to obtain the highest quality index of cotton yarn produced from the ginning process waste. Both sided i.e. 2. Ishtiaqe S M & Saxena A K, Indian J Fibre Text Res, 23 (1998) 209. %PDF-1.2
very short fibres is high, which may be due to the breakage of entangled fibr, comes along with the cotton fibres and is pos, rotor groove causes disturbance at the peel-of, are found to be present in the rotor groove, then thise end break, leaves present in large quantity in the feed sliver. Bundesarchiv Bild 183-1986-0625-001, Baumwollspinnerei Mittweida, Wettbewerb.jpg 800 × 555; 57 KB We additionally have enough money variant types and then type of the books to browse. It is a process in which the input material to the spinning system is highly drafted, ideally to the individual fiber state. 3. Whenever the final judgment on open end spinning may be, it is a process that is here to say. scientific publishing company, New York) 1975, 319 . This correction factor is shown to be accurate by using a positive false-twister at the exit of the outlet tube. 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