The Experts below are selected from a list of 171 Experts worldwide ranked by ideXlab platform
S M Ishtiaque - One of the best experts on this subject based on the ideXlab platform.
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Open Access Optimisation of a Textile Process Using Taguchi Method Akshay Kumar
2016Co-Authors: S M IshtiaqueAbstract:Abstract: Taguchi Method is explained in brief and one of the textile processes, called spinning process, is optimised by using Taguchi method for manufacturing optimum packing density of different technologies Yarns. The effect of process variables like: lap hank, card draft, draft/doublings and drafts at speed frame, ring frame, Rotor and air-jet spinning ma-chine on packing density parameters of respective technology Yarn was analysed. The effect of noise variables was also accounted for. The trends of change in packing density with process variables are opposite to those of Yarn diameter and helix angle of ring, Rotor and air-jet Yarns studied. The packing density is found to be the highest in air-jet Yarn and the lowest in Rotor Yarn. Increase in draft in air-jet spinner and decrease in Rotor spinner increase packing density of the re-spective Yarns. The change in noise variables does affect the packing density parameters of Yarns. Result analysis using Taguchi Method was according to the perception of some of the previous researcher on the subject. Hence, Taguchi method can be also used to optimise a textile process, where the product quality is highly variable and dependent on the combination of number of processes as well as on machine parameters
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Optimisation of a Textile Process Using Taguchi Method
The Open Textile Journal, 2009Co-Authors: Akshay Kumar, S M IshtiaqueAbstract:Taguchi Method is explained in brief and one of the textile processes, called spinning process, is optimised by using Taguchi method for manufacturing optimum packing density of different technologies Yarns. The effect of process variables like: lap hank, card draft, draft/doublings and drafts at speed frame, ring frame, Rotor and air-jet spinning ma- chine on packing density parameters of respective technology Yarn was analysed. The effect of noise variables was also accounted for. The trends of change in packing density with process variables are opposite to those of Yarn diameter and helix angle of ring, Rotor and air-jet Yarns studied. The packing density is found to be the highest in air-jet Yarn and the lowest in Rotor Yarn. Increase in draft in air-jet spinner and decrease in Rotor spinner increase packing density of the re- spective Yarns. The change in noise variables does affect the packing density parameters of Yarns. Result analysis using Taguchi Method was according to the perception of some of the previous researcher on the subject. Hence, Taguchi method can be also used to optimise a textile process, where the product quality is highly variable and dependent on the combination of number of processes as well as on machine parameters. The application of Design of Experiment technique on the optimisation of an industrial process is being frequently used. These designs are considered as extremely useful tools in the modern industry. Infact, experimental designs have been used in the chemical industry for a long time and are now being increasingly used in other industries too. Several textile problems have also been studied by means of these techniques, though some of them are rather restricted in scope. Moreover, the optimisation of textile processes is quite cumbersome because it is affected by a number of fac- tors which may or may not be controllable. There are various ways to optimise the effect of controllable variables by using Designs of Experiments like Factorial, Central composite, Box - Behnken etc. The main draw back of all these tech- niques is their inability to take in to account the effect of uncontrollable factor, like environmental conditions, spindle to spindle variation etc. The replications used in these de- signs bring out the variability under similar experimental conditions and process parameters.
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Analysis of spinning process using the Taguchi method. Part III: Effect of spinning process variables on migration parameters of ring, Rotor and air-jet Yarn
Journal of the Textile Institute, 2006Co-Authors: A. Kumar, S M Ishtiaque, K. R. SalhotraAbstract:Abstract The migration in ring Yarn (type I and type II), Rotor Yarn and air-jet Yarn was studied in terms of three parameters - mean fibre position (MFP), mean migration intensity (MMI) and root mean square deviation (RMSD) - using classical tracer fibre technique. The effect of various process variables on migration parameters was analysed using the Taguchi method, analysis of variance and a regression model. The trends of migration parameters in ring Yarn-type I are opposite to those of ring Yarn-type II. The ring Yarn has the highest MFP and the lowest MMI. The Rotor Yarn has the lowest MFP and RMSD. The air-jet Yarn has the highest MMI and RMSD. Increase in card draft increases the MMI and RMSDof Rotor Yarn and decreases the MMI of air-jet Yarn.However, it tends to increase the RMSD of ring Yarn-type II, Rotor Yarn and air-jet Yarn. A high draft/doublings at draw frame increases MFP in ring Yarn-type II, Rotor Yarn and air-jet Yarn. A decrease in ring frame/air-jet draft or an increase in speed frame...
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Analysis of spinning process using the Taguchi method. Part V: Effect of spinning processvariables on physical properties of ring, Rotor and air-jet Yarns
Journal of the Textile Institute, 2006Co-Authors: A. Kumar, K. R. Salhotra, S M IshtiaqueAbstract:Abstract Effect of lap hank and drafts, of various spinning sequence of machines, was studied on physical properties of different Yarns using Taguchi method and analysis of variance. The ring Yarn is highly even and has the least number of thin places and neps but thick places are the least in Rotor Yarn. The air-jet Yarn is the least even and has the highest number of thin places, thick places and neps. The total hairiness is the least on Rotor Yarn and number of hairs =3 mm (S3) the least in ring Yarn. In air-jet Yarn the total hairiness and S3 are the highest. The finer lap hank and higher card draft in preparatory process produces even ring and Rotor Yarns with lower hairiness. However, the higher speed frame draft improves the evenness of Yarn produced from coarser lap hank and lower card draft. Lower ring frame, Rotor and high air-jet draft improves the properties of the respective Yarns. Increase in ring/air-jet draft increases S3.
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STUDY OF EFFECT OF SPINNING PROCESS VARIABLES ON THE PACKING DENSITY OF RING, Rotor AND AIR-JET YarnS USING THE TAGUCHI METHOD
Autex Research Journal, 2006Co-Authors: A. Kumar, S M Ishtiaque, K. R. SalhotraAbstract:The effect of lap hank, card draft, draft/doublings and drafts at speed frame, ring frame, Rotor and air-jet on packing density parameters were analysed using the Taguchi method. The trends of change in packing density with process variables are opposite to those of the Yarn diameter and helix angle of the ring, Rotor and air-jet Yarns studied. The packing density is found to be the highest in air-jet Yarn and the lowest in Rotor Yarn. An increase in draft in the air-jet and a decrease in the Rotor spinner increases the packing density of the respective Yarns.
Faouzi Sakli - One of the best experts on this subject based on the ideXlab platform.
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Cotton waste recycling : Quantitative and qualitative assessment
Resources Conservation and Recycling, 2008Co-Authors: Mohamed Taher Halimi, Mohamed Ben Hassen, Faouzi SakliAbstract:The waste produced in a cotton textile mill is an important factor in determining the operating cost and therefore in influencing mill profits. In this paper, we examine the waste percentage and the good fibre fraction for two cleaning machines and a card. The cleaning behaviour in spinning preparation, of each waste, is predicted by determining the trash content and the preparatory processing. The quality of recovered fibres is discussed and compared to other virgin cotton. In order to appreciate these fibres, we study the effect of cotton wastes on the Rotor Yarn quality. The results indicate that generated wastes contain about 50% good fibre. This secondary raw material showed good cleanability and characteristics; therefore it can be blended in a proportion between 15 and 25% without hardly noticeable changes in Rotor Yarn quality.
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Effect of cotton waste and spinning parameters on Rotor Yarn quality
Journal of the Textile Institute, 2007Co-Authors: M. Taher Halimi, M. Ben Hassen, Béchir Azzouz, Faouzi SakliAbstract:Abstract In this paper, we study the effect of cotton wastes and different spinning parameters on the Rotor Yarn quality. Statistical models are established to predict a total quality index and the optimum spinning conditions by using maximum cotton waste rate. The results indicate that Rotor parameters (diameter, form and speed) have an effect as significant as waste proportion. With optimum spinning conditions, the secondary raw material can be mixed in a proportion between 15% and 25% without hardly noticeable changes in quality.
Khalilur Rahman Khan - One of the best experts on this subject based on the ideXlab platform.
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An Overview on Spinning Mechanism, Yarn Structure and Advantageous Characteristics of Vortex Spun Yarn and Fabric
Advances in Applied Sciences, 2018Co-Authors: Hosne Ara Begum, Khalilur Rahman Khan, Merajur RahmanAbstract:Spinning systems based on mechanical twisting device have their limitations in terms of technical feasibility and economic viability. Making effort on Yarn formation with the swirling air concept arouse of interest of the researchers for a long time. Air jet spinning had offered this opportunity for Yarn manufacturers to produce Yarn at relatively high production rate. Vortex spinning technology is a modified form of air-jet spinning which has attracted a lot of attention because of its advantages over ring spinning, open end and air-jet spinning in terms of production rate and Yarn quality parameters. In this study, with stating some historical background, the mechanism of vortex spinning, structure and characteristics of vortex spun Yarn have been overviewed. The body of vortex Yarn is mainly constituted with twistless and parallel core fiber held together by helical surface wrapper fibers. All designated fiber types are found in vortex Yarn such as wild fibers, belly band fibers, parallel and helical fibers. In case of quality consideration, air-vortex Yarn has higher values of tenacity compared to the Rotor Yarn & air-jet Yarn. This Yarn has also improved characteristics compared to the ring and Rotor Yarns in terms of hairiness, evenness and bending rigidity. On the other hand, the advantageous properties of fabric produced from vortex Yarn such as pilling resistance, delicate printing capability, comfort characteristics etc. have been discussed. Finally, advantages obtained in some post spinning processes such as sizing, better loom shedding, drying of fabric after dyeing etc have also been mentioned in this paper.
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Study of Effect of Rotor Speed, Combing-Roll Speed and Type of Recycled Waste on Rotor Yarn Quality Using Response Surface Methodology
2015Co-Authors: Iosr Journals, Khalilur Rahman Khan, Habibur RahmanAbstract:A three factors, three level for two factors, i.e. combing roll speed and Rotor speed and pneumafil percentage as a categorical factor, face centered central composite design (CCD) was used and response surface methodology was applied to determine the interactions of selected independent variables on Rotor spun Yarn quality prepared by using 100% recycled spinning waste. The influence of these three independent variables on the four dependent responses, i.e. total imperfections, Yarn CSP value, elongation% and end breakage rate was evaluated. Results indicate that Rotor speed 85000 rpm and combing roll speed 8500 rpm gives best result in terms of Yarn CSP value and elongation% of 16 Ne Rotor spun Yarn produced from 100% recycled spinning waste. Ends breakage increased drastically at increasing Rotor speed and combing roll speed but it can be minimized by using pneumafil in recycled fiber mixing. In addition, Yarn quality can be improved up to 5-25% by using 15% pneumafil instead of comber noil for any level of Rotor speed and combing-roll
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The Influence of Some Process Parametres on Rotor Spun Yarn Quality Produced from Recycled Cotton Spinning Wastes
International Journal of Textile Science, 2015Co-Authors: Khalilur Rahman Khan, Ronobir Chandra Sarker, Habibur RahmanAbstract:Rotor spun Yarns from recycled cotton spinning wastes were manufactured by means of Rotor spinning process and tested for Yarn imperfections and strength.Results of studies are examined the effect of cleaning intensity,cylinder speed and combing roller speed of Rotor frame by using box and behnken experimental design. Observing the value of co-efficent of determination,it can be said that the properties of Yarn imperfections affectedsignificantly by our selected parametres in compared with the incidence of Yarn strength. Yarn imperfections (Thick place and Neps) results improve with increasing cylinder speed although higher cylinder speed shows slightly different results in case of Yarn neps. Increase of opening roller speed improves Yarn imperfections quality at lower cleaning intensitysetting of UNIclean and although further increase of opening roller speed hardly improves the results of Yarn neps(+280%) but increases the value of thick place in Yarn. Lower cleaning intensity setting gives better Rotor Yarn strength produced by using 100% recycled cotton wastes. Experiments based on a 60 tex Rotor Yarn indicate that our selected independent variables influence Rotor Yarn quality not linearly but quatradically with few exceptions.
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Statistical Analyses and Predicting the Properties of Cotton/Waste Blended Open-End Rotor Yarn Using Taguchi OA Design
International Journal of Textile Science, 2015Co-Authors: Khalilur Rahman Khan, Mohammad Mobarak Hossain, Ronobir Chandra SarkerAbstract:Quality and cost of production are two important considering parts during production of cotton/waste blended open-end Rotor spun Yarn. Nowadays, blending of spinning waste with virgin cotton is a common phenomenon in Rotor spinning intended to lower the production cost. As a result, understanding the relationships between properties of cotton/waste blended Rotor Yarn and different spinning conditions are important for spinner to maintain acceptable quality. However, this paper focuses on predicting the properties of cotton/waste blended Rotor Yarn, using taguchi OA experimental design. In this study, the experimental quality characteristics of 16 Ne Rotor Yarn focused on are the, unevenness, imperfections, strength and elongation wherein before blend ratios, blending technique, two process parameters namely cylinder speed and Rotor speed were used as predictors. Using ANOVA, the significant factors influencing the quality characteristics of Rotor spun Yarn are obtained and analyzed by interaction matrix of dependent variables. Result shows that the most influential parameter in our investigation was waste proportion as expected. Though inferior in strength, the benefits of draw frame blending in OE spinning may be more than blow room blending in terms of reducing the imperfection, irregularity and Yarn elongation during processing of higher waste mixing. With increasing Rotor speed, Yarn evenness, imperfection and strength show a significant deterioration, in case of elongation, no consistent trend was observed.
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statistical analyses and predicting the properties of cotton waste blended open end Rotor Yarn using taguchi oa design
International Journal of Textile Science, 2015Co-Authors: Khalilur Rahman Khan, Mohammad Mobarak Hossain, Ronobir Chandra SarkerAbstract:Quality and cost of production are two important considering parts during production of cotton/waste blended open-end Rotor spun Yarn. Nowadays, blending of spinning waste with virgin cotton is a common phenomenon in Rotor spinning intended to lower the production cost. As a result, understanding the relationships between properties of cotton/waste blended Rotor Yarn and different spinning conditions are important for spinner to maintain acceptable quality. However, this paper focuses on predicting the properties of cotton/waste blended Rotor Yarn, using taguchi OA experimental design. In this study, the experimental quality characteristics of 16 Ne Rotor Yarn focused on are the, unevenness, imperfections, strength and elongation wherein before blend ratios, blending technique, two process parameters namely cylinder speed and Rotor speed were used as predictors. Using ANOVA, the significant factors influencing the quality characteristics of Rotor spun Yarn are obtained and analyzed by interaction matrix of dependent variables. Result shows that the most influential parameter in our investigation was waste proportion as expected. Though inferior in strength, the benefits of draw frame blending in OE spinning may be more than blow room blending in terms of reducing the imperfection, irregularity and Yarn elongation during processing of higher waste mixing. With increasing Rotor speed, Yarn evenness, imperfection and strength show a significant deterioration, in case of elongation, no consistent trend was observed.
A. Kumar - One of the best experts on this subject based on the ideXlab platform.
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Analysis of spinning process using the Taguchi method. Part III: Effect of spinning process variables on migration parameters of ring, Rotor and air-jet Yarn
Journal of the Textile Institute, 2006Co-Authors: A. Kumar, S M Ishtiaque, K. R. SalhotraAbstract:Abstract The migration in ring Yarn (type I and type II), Rotor Yarn and air-jet Yarn was studied in terms of three parameters - mean fibre position (MFP), mean migration intensity (MMI) and root mean square deviation (RMSD) - using classical tracer fibre technique. The effect of various process variables on migration parameters was analysed using the Taguchi method, analysis of variance and a regression model. The trends of migration parameters in ring Yarn-type I are opposite to those of ring Yarn-type II. The ring Yarn has the highest MFP and the lowest MMI. The Rotor Yarn has the lowest MFP and RMSD. The air-jet Yarn has the highest MMI and RMSD. Increase in card draft increases the MMI and RMSDof Rotor Yarn and decreases the MMI of air-jet Yarn.However, it tends to increase the RMSD of ring Yarn-type II, Rotor Yarn and air-jet Yarn. A high draft/doublings at draw frame increases MFP in ring Yarn-type II, Rotor Yarn and air-jet Yarn. A decrease in ring frame/air-jet draft or an increase in speed frame...
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Analysis of spinning process using the Taguchi method. Part V: Effect of spinning processvariables on physical properties of ring, Rotor and air-jet Yarns
Journal of the Textile Institute, 2006Co-Authors: A. Kumar, K. R. Salhotra, S M IshtiaqueAbstract:Abstract Effect of lap hank and drafts, of various spinning sequence of machines, was studied on physical properties of different Yarns using Taguchi method and analysis of variance. The ring Yarn is highly even and has the least number of thin places and neps but thick places are the least in Rotor Yarn. The air-jet Yarn is the least even and has the highest number of thin places, thick places and neps. The total hairiness is the least on Rotor Yarn and number of hairs =3 mm (S3) the least in ring Yarn. In air-jet Yarn the total hairiness and S3 are the highest. The finer lap hank and higher card draft in preparatory process produces even ring and Rotor Yarns with lower hairiness. However, the higher speed frame draft improves the evenness of Yarn produced from coarser lap hank and lower card draft. Lower ring frame, Rotor and high air-jet draft improves the properties of the respective Yarns. Increase in ring/air-jet draft increases S3.
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STUDY OF EFFECT OF SPINNING PROCESS VARIABLES ON THE PACKING DENSITY OF RING, Rotor AND AIR-JET YarnS USING THE TAGUCHI METHOD
Autex Research Journal, 2006Co-Authors: A. Kumar, S M Ishtiaque, K. R. SalhotraAbstract:The effect of lap hank, card draft, draft/doublings and drafts at speed frame, ring frame, Rotor and air-jet on packing density parameters were analysed using the Taguchi method. The trends of change in packing density with process variables are opposite to those of the Yarn diameter and helix angle of the ring, Rotor and air-jet Yarns studied. The packing density is found to be the highest in air-jet Yarn and the lowest in Rotor Yarn. An increase in draft in the air-jet and a decrease in the Rotor spinner increases the packing density of the respective Yarns.
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Analysis of spinning process using the Taguchi method. Part II: Effect of spinning process variables on fibre extent and fibre overlap in ring, Rotor and air-jet Yarns
Journal of the Textile Institute, 2006Co-Authors: S M Ishtiaque, K. R. Salhotra, A. KumarAbstract:Abstract The fibre orientation in 24s Ne ring, Rotor and air-jet Yarns has been studied using tracer fibre technique. The effect of drafts at different stages of spinning process on fibre orientation in different Yarns has been analyzed using Taguchi Method and analysis of variance. The fibre orientation was studied in terms of fibre extent (FE) and two newly defined indices (FOIs), fibre-overlap index (FOI) and fibre-pair-overlap length (FPO). Ring Yarn is seen to have the highest FE and FOIs and Rotor Yarn the least. A medium card draft (101 or 114) and a corresponding ring or speed frame draft give the highest FE. The effect of fibre parallelization in finisher sliver is retained in respect of FE and FOIs in Rotor and air-jet Yarns. The effect of fibre parallelization in rovings is manifested on FOI of ring Yarns. A higher card draft and correspondingly lower air-jet draft give higher FE and FOIs.
K. R. Salhotra - One of the best experts on this subject based on the ideXlab platform.
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Analysis of spinning process using the Taguchi method. Part III: Effect of spinning process variables on migration parameters of ring, Rotor and air-jet Yarn
Journal of the Textile Institute, 2006Co-Authors: A. Kumar, S M Ishtiaque, K. R. SalhotraAbstract:Abstract The migration in ring Yarn (type I and type II), Rotor Yarn and air-jet Yarn was studied in terms of three parameters - mean fibre position (MFP), mean migration intensity (MMI) and root mean square deviation (RMSD) - using classical tracer fibre technique. The effect of various process variables on migration parameters was analysed using the Taguchi method, analysis of variance and a regression model. The trends of migration parameters in ring Yarn-type I are opposite to those of ring Yarn-type II. The ring Yarn has the highest MFP and the lowest MMI. The Rotor Yarn has the lowest MFP and RMSD. The air-jet Yarn has the highest MMI and RMSD. Increase in card draft increases the MMI and RMSDof Rotor Yarn and decreases the MMI of air-jet Yarn.However, it tends to increase the RMSD of ring Yarn-type II, Rotor Yarn and air-jet Yarn. A high draft/doublings at draw frame increases MFP in ring Yarn-type II, Rotor Yarn and air-jet Yarn. A decrease in ring frame/air-jet draft or an increase in speed frame...
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Analysis of spinning process using the Taguchi method. Part V: Effect of spinning processvariables on physical properties of ring, Rotor and air-jet Yarns
Journal of the Textile Institute, 2006Co-Authors: A. Kumar, K. R. Salhotra, S M IshtiaqueAbstract:Abstract Effect of lap hank and drafts, of various spinning sequence of machines, was studied on physical properties of different Yarns using Taguchi method and analysis of variance. The ring Yarn is highly even and has the least number of thin places and neps but thick places are the least in Rotor Yarn. The air-jet Yarn is the least even and has the highest number of thin places, thick places and neps. The total hairiness is the least on Rotor Yarn and number of hairs =3 mm (S3) the least in ring Yarn. In air-jet Yarn the total hairiness and S3 are the highest. The finer lap hank and higher card draft in preparatory process produces even ring and Rotor Yarns with lower hairiness. However, the higher speed frame draft improves the evenness of Yarn produced from coarser lap hank and lower card draft. Lower ring frame, Rotor and high air-jet draft improves the properties of the respective Yarns. Increase in ring/air-jet draft increases S3.
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STUDY OF EFFECT OF SPINNING PROCESS VARIABLES ON THE PACKING DENSITY OF RING, Rotor AND AIR-JET YarnS USING THE TAGUCHI METHOD
Autex Research Journal, 2006Co-Authors: A. Kumar, S M Ishtiaque, K. R. SalhotraAbstract:The effect of lap hank, card draft, draft/doublings and drafts at speed frame, ring frame, Rotor and air-jet on packing density parameters were analysed using the Taguchi method. The trends of change in packing density with process variables are opposite to those of the Yarn diameter and helix angle of the ring, Rotor and air-jet Yarns studied. The packing density is found to be the highest in air-jet Yarn and the lowest in Rotor Yarn. An increase in draft in the air-jet and a decrease in the Rotor spinner increases the packing density of the respective Yarns.
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Analysis of spinning process using the Taguchi method. Part II: Effect of spinning process variables on fibre extent and fibre overlap in ring, Rotor and air-jet Yarns
Journal of the Textile Institute, 2006Co-Authors: S M Ishtiaque, K. R. Salhotra, A. KumarAbstract:Abstract The fibre orientation in 24s Ne ring, Rotor and air-jet Yarns has been studied using tracer fibre technique. The effect of drafts at different stages of spinning process on fibre orientation in different Yarns has been analyzed using Taguchi Method and analysis of variance. The fibre orientation was studied in terms of fibre extent (FE) and two newly defined indices (FOIs), fibre-overlap index (FOI) and fibre-pair-overlap length (FPO). Ring Yarn is seen to have the highest FE and FOIs and Rotor Yarn the least. A medium card draft (101 or 114) and a corresponding ring or speed frame draft give the highest FE. The effect of fibre parallelization in finisher sliver is retained in respect of FE and FOIs in Rotor and air-jet Yarns. The effect of fibre parallelization in rovings is manifested on FOI of ring Yarns. A higher card draft and correspondingly lower air-jet draft give higher FE and FOIs.
