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Assessment of the Qualities of Yarns of Different Counts to Standardize Them

M. A. Hannan
Senior Scientific Officer
Testing and Standardization Department, Textile physics Division, Bangladesh Jute Research Institute. Dhaka-1207.

M.H. Chowdhury
SSO
Testing and Standardization Department, Textile physics Division, Bangladesh Jute Research Institute. Dhaka-1207.

M.Hurmuz Ali Miah
PSO
Testing and Standardization Department, Textile physics Division, Bangladesh Jute Research Institute. Dhaka-1207.

Abstract/ Executive Summary:

This year jute yarn samples were collected from Adamjee Jute Mills ltd. Three different warp yarn, viz. CBC, hessain and sacking which are being produced commercially were collected for study. The Physical properties such as count, twist per metre(TPM) twist factor (TF), breaking load, extension percentage at break, quality ratio (QR), etc. were determined .A comparative analysis of the physic o-mechanical properties of these yarns with those of Nishat and UMC Jute Mills Ltd. Studied earlier were made. For drawing definite conclusion and to make full interpretation on the results further studies are required.

Keywords: Novotex Home furnishing Fabrics, Conventional home Furnishing Fabrics, Bursting strength

Location: Bangladesh Jute Research Institute

Start Date: 01-01-1995

End Date: 31-12-1997

Program Area: Knowledge Management

Commodity: Jute

Objectives:

To improveme and standardize of yarns of different counts.

Methodology:

Under the project, this year jute yarn samples were collected from Adamjee Jute Mills ltd. Three different warp yarn, viz. CBC, hessain and sacking which are being produced commercially were collected for study. Physical properties such as count, twist per metre(TPM) twist factor (TF), breaking load, extension percentage at break, quality ratio (QR), etc. were determined as per standard test methods in the standard atmosphere of R.H. (65±2)% and temperature of (20±2)ºC. Batch composition of yarns as follows: CBC Warp yarn (7 lbs/spy) : BTC-50% BTD-10% BWC- 10% , BWD-20% Mesta ‘C’ (cutting)-10% Hessain warp yarn(8.25 lbs/spy) : Tossa ‘C’ Bottom-50% BTD- 10 % BWD-10% White ‘C’ Bottom-30% Sacking warp (10.25 lbs/spy) : Tossa ‘X’ Bottom- 40% BWD- 20 % White ‘X’ Bottom-20% Mesta ‘C’ Bottom-10% SMR-10% It is well known that different constituents of the batch composition are not mixed before the processing starts, but are mixed in silver stages. However, in our investigation to determine the batch composition the different grades were mixed by hand in the same proportion as their ratio in the batch composition.

Source of Information: Annual Technical Report, BJRI.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 60,000

Total Budget (Tk.) : 60,000

Achievement/Findings:

It seems that all the jute mills produce particular yarns for specific purposes keeping their nominal count of 8.25 lb/spy for hessian, 10.25 lb/spy for sacking and 7.0 lb/spy for CBC warp yarns but the jute mills varied from their nominal counts. So it is apparent that all the yarns at different mills are heavier than their expected i.e. nominal counts. Hessian warp yarn of Nishat jute Mills and sacking of UMC jute Mills are found heavier that the corresponding yarns of the other jute mills. Among the Hessian warp yarns, quality ratio of the yarn collected from Adamjee jute mill is slighter higher (about 86%) followed by those of UMC (83%) and Nishat jute Mills Ltd (80%). From the CV% of breaking loads both the Hessian and sacking warp yarns of UMC jute mill are found better i.e. more regular than the others.

Knowledge Management: Report/Proceedings