International Journal on Textile Engineering and Processes ISSN Vol. 2, Issue 2 April 2016

Transcription

1 Effect of Draw Frame Bottom Roller Gauge Setting on Yarn Quality Vijay Chaudhari 1, P. P. Raichurkar 2 Centre for Textile Functions, MPSTME, SVKM S NMIMS, Shirpur Campus raichurkar@gmail.com Abstract This project work deals to determine impact of bottom roller gauge setting of draw frame machine performance on yarn quality. For the experiment 15 Tex (40 s Ne)combed cotton yarn were prepared in finisher Draw frame machine with bottom roller gauge setting 40/44 mm & 42/46 mm and trial were conducted by changing on finisher Draw frame LRSB 851. For the trail LMW line used for 15 Tex (40 s Ne). Blow room to Ring frame material processed through same machinery conditions as well as setting in finisher Draw frame machine used to determine impact of bottom roller gauge setting on Yan quality. It was found that imperfection (thin, thick & neps), short term evenness (u%), and strength of yarn are influenced by the changes in bottom roller gauge setting, adopted for large scale working in spinning department. the mean breaking force of yarn was measured using a standard tensorapid tensile tester. the CV% of yarn was tested with an uster evenness tester, to analyze the impact of scanning roller width and its pressure on yarn quality. Key words: Bottom roller gauge setting in draw frame Introduction This chapter deal the object of an auto leveler is to measure the sliver thickness variation and the continuously to alter the draft accordingly, so that more draft is applied to thick places, and less to thin places with the result that the sliver delivered is less irregular. Besides an improvement in product appearance, Autolevelling contribute to better productive efficiency, fewer end breakages in subsequent processes, less waste, and constant performance. There are two types of Autolevelling systems, open loop system and closed loop system, most of the draw frame auto leveler are open loop auto leveler. In open loop auto leveler, sensing is done at the feeding zone and the correction is done by changing either a break draft or main draft of the drafting system. In close loop auto leveler system, sensing is done at the delivery side and the correction is done by changing either a break draft or main draft of the drafting system. The draw frame in a textile mill is unavoidable in yarn spinning as fibers need to be kept side by side termed as parallelization of fibers in textile technology. This is done as we see that most of the fibers at carding stage are so fast that there is little or no fiber parallelization. Even though modern carding machines have using the auto leveler still there can be some unevenness along the slivers. These two issues will affect the quality of the yarn. The draw frame machine is the last machine which can improve the yarn quality in the yarn manufacturing process. The tasks drafting and doubling are the objectives of the draw frame machine in order to improve the fiber orientation and sliver uniformity respectively. Removal of hooks and dust also can be carried out by the machine, at a significant amount. Machinery Details- Make - LMW Model - LRSB 851 Made - India Year Literature Review Increase in the number of Draw frame passage result in more removal of hooks and also straightening of hooks this also leads to better mean fibre extend and its result yarn gives better cohesiveness. Cohesiveness is increase by more and optimum drafting pressure. Doubling is very important for equalizing. This means well distribution of different fibres with their same or different properties all along the length of the delivery sliver. The main purpose of doubling is blending and elimination of mass variation of the delivery sliver. Mass variation is reduced if there are a few thick places and some amount of thin places in the same zone. If this kind of set up does not arise the task of elimination of mass variation completely depends on the auto leveler. Blending also improved by doubling because cans from different carding machines are fed to a breaker draw frame and cans of different breaker draw frame are fed to different finisher draw frame. Thus a very good blending of fibre can be achieved. When doubling and drawing are combined, the input materials are doubled to reduce the long-term errors; however, new errors of shorter wavelengths are added as a result of the process of elongation. There is an exchange of relatively long-term for short-term error Copyright@CTF- MPSTME Page 28

2 Material and Method High grade cotton was used in the study. For the trail LMW line was selected 15 Tex (40 s Ne) (H4 100% Mixing). Blow room to Ring frame material processed through same machinery conditions as well as settings and finisher draw frame machine used to determine impact of Bottom roller gauge setting. The specification of the cotton which was used in the study is as follows: Raw Material Properties Table- I Machinery line LMW Mixing H4-100% Count 15 Tex (40 s Ne) Cotton Variety H4-A100% Micronaire 3.51 Uniformity index Elongation 5.3 Strength gm/tex 28.2 In this experiment, trials were conducted at finisher draw frame machine by changing bottom roller gauge setting on well-maintained finisher draw frame LMW line LRSB 851.In order to study impact of scanning roller width and its pressure on yarn quality in, usually imperfection, (thick, thin, neps) and short term evenness (U%), strength of yarn were influenced.the mean breaking force of the yarn was measured using a standard Tensorapid tensile tester & the U% of the yarn mass was tested with a USTER Evenness tester, to analyze the impact of Bottom roller gauge setting, adopted for large-scale working in spinning department. Test Results and Discussions Count Strength Product Report-(CSP) Table-III 1 Nominal count Bottom roller gauge setting 41/45 40/44 42/46 3 Actual count Count CV % Strength (lb) Strength CV % CSP USTER-5 Report- Table-IV Bottom roller gauge setting 41/45 40/44 42/46 1 U% Thin Place/km (-50%) Thick Place/km (+50%) Neps/km (+200%) Total Imperfection/km Hairiness Single Yarn Strength report-(sys) Table-V BOTTOM ROLLER GAUGE SETTING 41/45 40/44 42/46 1 RKM RKM CV% ELONG % Copyright@CTF- MPSTME Page 29

3 4 ELONG CV% USTER- Classimate report Table-VI BOTTOM ROLLER GAUGE SETTING 41/45 40/44 42/ CLASS CLASS CLASS CLASS CLASS LONG THICK LONG THIN Conclusion As overall Yarn quality (U%, IPI, CSP, RKM) with bottom roller gauge 40/44mm found better results as compare to regular setting 41/45 mm and another trial setting 42/46mm.The yarn produced using the optimum roller setting in draw frame machine show that percentage improvement in yarn quality. The optimum bottom roller gauge setting in draw frame drafting zone give a better result like a bottom roller gauge setting 40/44. It gives a better result in U%. The wider settings in break draft and main draft caused more breakages and leads to increase U% in given sliver in drafting zone, the draw frame feeding sliver comes from card the card sliver having maximum weight variation due to leading and trailing hooks. In order to remove hooks or straighten fibers and weight variation in drafting zone the draft were introduced. The optimum bottom roller gauge setting gives a better result as show in the above graph. References [1] Bagchi, A.K. (1976): De-industrialization in India in the nineteenth century: some theoretical implications, Journal of Developmental Studies, 12, [2] Harnetty, P (1991) De-industrialization revisited: the handloom weavers of the Central Provinces of India c , Modern Asian Studies, 25, 3, pp [3] Long, N. (1968): Social Change and the Individual: A study of Social and Religious Responses to Innovation, Manchester University Press, Manchester.Page 5 [4] Sateesh Belemkar, M Ramachandran, Recent Trends in Indian Textile Industry-Exploring Novel Natural Dye Products and Resources, International Journal on Textile Engineering and Processes 1 (3), [5] Pramod Raichurkar, M. Ramachandran, Recent Trends and Developments in Textile Industry in India, International Journal on Textile Engineering & Processes 1 (4), [6] Cable, V.I. Weston, A. and L.C. Jain (1986): The commerce of culture: The experience of Indian Handicrafts, South Asia Publications. [7] Clinging smith, D and J.G. Williamson (2008) De-industrialization in the 18th and the 19thcentury India: Mughal decline, climate shocks and British industrial ascent, Explorations in Economic History, 45, [8] M Ramachandran, Rishabh Bhargava, PP Raichurkar, Effect of Nanotechnology in Enhancing Mechanical Properties of Composite Materials, International journal on Textile Engineering and Processes 2 (1), [9] M Ramachandran, Sahas Bansal, Vishal Fegade, Pramod Raichurkar, Analysis of Bamboo Fibre Composite with Polyester and Epoxy Resin, International Journal on Textile Engineering & Processes 1 (4), 2015, [10] Adler P.S, and S.W. Kwon. (2002): Social Capital: Prospects for a new concept, Academy of Management Review, Vol. 27, No. 1, pp [2]. [11] M Ramachandran, Sahas Bansal, Pramod Raichurkar, Experimental Study of Bamboo using Banana and Linen Fiber Reinforced Polymeric Composites, Perspectives in Science,2016. [12] M. Ramachandran, Application of Natural Fibres in Terry Towel Manufacturing, International Journal on Textile Engineering and Processes, 1(1) 2015, pp Copyright@CTF- MPSTME Page 30

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