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An Experimental Investigation for Determination of Optimum Spindle Speed of a Modified Apron Draft Spinning Machine for Production of Fine Jute Yarn.

Dr. Md. Osman Ghani Miazi
Chief Scientific Officer
Mechanical Processing Division, BJRI, Manik Mia Avenue, Dhaka-1207.

Latifa Ninte Lutfar
CSO
Mechanical Processing Division, BJRI, Manik Mia Avenue, Dhaka-1207.

M.A. Rashid Sarker
Department of Mechanical Engineering, BUET, Dhaka-1000.

Abstract/ Executive Summary:

An apron draft spinning machine was modified into ring system by incorporating rings and travelers instead of flyers. In this modification delivery zone of the machine was left unchanged. Two rails were incorporated, one for carrying spindle and another one for carrying rings. An idle roller was installed at the rear end of the machine for transferring power from main roller to the spindles. The input sliver of the machine was varried from 70 to 80 lbs/spy. The speed of the spindles was increased up to 9000 rpm from its orginal flyer speed 4250 rpm. A number of trail runs were performed for finding the optimum spindle speed of the machine for production of fine jute yarn. Bangla Tossa B (BTB), bangla White B (BWB) and Bangla White C (BWC) grade jute fibres were used for production of jute yarns of 103.5 tex (3 lb/spy) and 138 tex (4.0 lb/spy). The properties of the produced yarns were tested and found similar like yarns produced by standard fine jute yarn producing machines.

Keywords: Apron draft, Spindle speed, Fine yarn

Location: Mechanical Processing Division, BJRI

Start Date: 00-00-2002

End Date: 00-00-2002

Program Area: Postharvest and Agro-processing

Commodity: Jute

Objectives:

To optimized the spindle speed for the production of fine jute yarn of 3 lbs/spy and 4 lbs/spy by the development spinning system.

Methodology:

Jute is natural cellulosic bast fibre. At present there is number of man–made fibre in the world textile market. It is a textile fibre of good spin able character. Different organization both home and abroad are trying to introduce diversified jute products in the market. With a view to earning foreign currency in substantial amount, fine jute yarn is essential for the production of diversified jute goods. In this regard Bangladesh Jute Research Institute has carried out research works in the development of some processes for production of fine yarn. In these works Gradell spinning machine has been used. Morever, the machine manufacturer is not making these machines for a long time. Frence Textile and Clothing Institute is doing research for production of fine and quality yarn from jute and other natural fibre like flax. N.S.C. (Schlumberger) a amchine manufacturere of Frence is making some machines for producing fine jute yarn, for example N.S.C. 232 ring spinning frame. But all thede machines are not cost effective for jute fibre. Mechanical Engineering Department of Bangladesh University of Engineering & Technology has carried out a research work under an M.Sc. programme for production of fine yarn by using Apron Draft spinning machine. In this work, adaption of ring spinning in the flyer spinning system was studied and some samples of fine jute was not studied. Indian Jute Industries Research Association (IJIRA) has also conducted some work on fine yarn.These are various methods of jute spinning. Such as, Cap spinning, Mule spinning, Flyer spinning, Ring spinning, Centrifugal spinning etc. A modified Apron Draft spinning machine was used in this study.

Source of Information: Proceedings of the Ont. Conf. on manufacturing, ICM 2002, August 2002, Dhaka. pp 602-607.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Apron draft spinning machine can be converted into ring system through minor modification. The machine is able to produce jute yarn of 3 lb/spy to 4 lb/spy. Optimum spindle speed is essential for higher productivity. Application of spindle speed other than optimum spindle lowers the production of the machine. From the experiment it was shown that optimum spindle speed is 8000 rpm for production of 3 lbs/spy jute yarn. From the experiment it was shown that optimum spindle speed is 7000 rpm for production of 4 lbs/spy jute yarn. Quality of yarn produced from BTB jute fibre is better than that of yarn produced from BWC jute fibre. The properties of produced yarn are similar like yarn produced by other standard fine jute yarn producing machines.

Knowledge Management: Journal, Report/Proceedings