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Mechanical Characters of Low Count Yarns with Different Qualities of Jute Fiber with Particular Reference to the Fiber Entities Produced at Different Stages of Processing.

Md. Siddiqur Rahman
Senior Scientific Officer
Physics Department, Physics and Testing Division, BJRI, Technology Wing, Manik Mia Avenue, Dhaka-1207.

Abstract/ Executive Summary:

Fine yarn is necessary for finer fabrics and evaluation of different parameters of jute at the different stages of yarn processing is important for fine yarn. For this reason, samples of carpet backing cloth (CBC) warp yarn of nominal count 7.75lb/spindle collected from Adamjee Jute Mills Ltd and Dhaka jute Mills Limited for study breaking strength, average mass of the yarn and average number of fiber in the yarns in the physics department during 1980 at standard room temperature and humidity conditions. The breaking strength, average mass of yarns and average number of fibers in the yarns of Dhaka Jute Mills were found to be higher whereas average diameter of fiber and yarn as well as average fiber length were lower than those of the Adamjee jute Mills limited. Study of the samples of both Mills indicated that fracture zone contains 31% less jute than rest of the yarn.

Keywords: Finer fabrics , Fracture zone, Carpet backing, Breaking strength.

Location: Physics Department, Physics and Testing Division, BJRI, Technology Wing, Manik Mia Avenue, Dhaka-1207

Start Date:

End Date:

Program Area: Postharvest and Agro-processing

Commodity: Jute

Objectives:

1. To produce light fine yarn for finer fabrics.

2. To evaluate different parameters of jute at the different stages of yarn processing.

Methodology:

Samples were collected from Adamjee Jute Mills and Dacca Jute Mills for study. Specimen of yarn 20 inches long were selected and breaking strength was measured using Good Brand tensile tester. After tensile test each test specimen were weighted and average mass found. The diameter of different places along the length of the test were then determined with the help of Projection Microscope. For mass measurement 1 inch length from the tip of each of the two broken ends of a test specimen of yarn was cut and weighed on the electrical balance. 100 yard hanks of yarn taken from a sample were weighed to determine the grist and the result was expressed in pounds per spindle of 14,400 yds. The twist of the yarn was measured by using Herbert Stein twist tester.

Source of Information: Annual Technical Report 1980: 100-102

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It was found from the result that the CBC warp yarn of nominal count 7.75 lbs from Dacca Jute Mills and on the yarn of the same count from Adamjee Jute Mills that the portion of the yarn other than fracture zone contains 31% more jute than that of fracture zone. It was also found that the strength of the yarn increases with the increase of the number of fibers.

Knowledge Management: Report/Proceedings