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Effect of Spindle Speed on Textile Properties and Productivity of Fine Jute Yarn

Md. Osman Ghani Miazi
Mechanical Processing Division, Bangladesh Jute Research Institute (BJRI), Manik Mia Avenue, Dhaka-1207

A. K. M. Mahabubuzzaman and
Department of Spinning, Mechanical Processing Division, Bangladesh Jute Research Institute (BJRI), Manik Mia Avenue, Dhaka-1207

Md. Mazedul Kabir
Mechanical Processing Division, Bangladesh Jute Research Institute (BJRI), Manik Mia Avenue, Dhaka-1207

Abstract/ Executive Summary:

Spindle speed is an important parameter for the production of jute yarn. An Apron Draft spinning frame was modified in to ring system by incorporating rings and travelers instead of flyers. The experiments were performed for investigating the effect of spindle speed on textile properties and productivity of jute yarn of 103 tex. The spindle speed was varied from 5000 rpm to 9000 rpm. The experiments were performed with Bangla White B (BWB) grade jute sliver of finisher drawing of linear density 2415 tex (70 lb/spy). The draft ratio and the twist used in the experiments were 23 and 240 tpm (turns per meter) respectively. The ring size was KW (4) 76 mm Ø. Steel travelers number 1, Type G, semicircular in shape were used in the experiment. Ten runs were performed for the experiment at the standard atmospheric condition, 20 + 2?C, and relative humidity 65% + 2%. The nominal count of the yarn produced was 103 tex. The yarns produced through the experiments were tested for different textile properties. Analysis of the test results shows that the spindle speed greatly influences the textile properties, such as strength, elongation, yarn breakage, productivity, quality ratio etc. of produced yarn. In consideration of the productivity, quality and other textile properties of the yarn, the optimum spindle speed was determined for the production of fine jute yarn of 103 tex.

Keywords: Apron draft, Spindle speed, Fine jute yarn.

Location: Mechanical Processing Division, Bangladesh Jute Research Institute (BJRI), Manik Mia Avenue, Dhaka

Start Date:

End Date:

Program Area: Postharvest and Agro-processing

Commodity: Jute

Objectives:

To develop and introduce diversified jute products in the market

Methodology:

Bangla White B (BWB) grade jute fibre was used as raw material. Jute yarn of 103 tex linear density was produced from the finisher drawing sliver of around 2415 tex (70 lb/spy). The back processing for the production of the said input sliver was carried out following the conventional jute back processing system. The spindle speed of the experimental machine was increased up to 9000 rpm from its original speed of 3500 to 4250 rpm. Experiments were conducted using 5000 to 9000 rpm spindle speed, and thus different samples of yarns were produced at different spindle speeds. The textile properties of the produced samples were tested through a computerized Universal Testing machine (Instron machine). Produced yarns were weighed through a digital electronic balance for determining the actual linear density of the yarn as well as productivity of the machine. Spindle speed of the machine varied by changing the motor pulley of the machine. Speeds of the spindles were measured with a digital Tachometer. In this experiment, inserted twist of the yarn was 240 tpm, KW (4) 76 mm Ø steel ring and type G, No. 1 Travellers were used. The experiments and all tests of yarn were performed in standard textile testing laboratory [6].

Source of Information: DAFFODIL INTERNATIONAL UNIVERSITY JOURNAL OF SCIENCE AND TECHNOLOGY, VOLUME 4, ISSUE 2, JULY 2009

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Existing apron draft spinning frame can be modified into ring system from its original flyer system. Yarns of 103 tex can be produced at different spindle speeds through the machine. From the textile properties of produced yarns it was shown that spindle speeds has an important effect on properties of yarns and productivity of the machine. From the experiment it was concluded that the quality ratio of produced yarn decreased with the increase of spindle speed and productivity of the machine was optimum at 8000 rpm spindle speed, which was 208 g/spindle-hr.

Knowledge Management: Journal