BGMEA University of Fashion & TechnologyCourse Name: Testing of TextilesCourse Code : Tex 2104

Subject: Assignment Submission on Yarn count measurement by using reel and Electronic Balance.

Submitted toMd. Ramij Howlader

Lecturer Department of Textile Engineering

BUFT.

Submitted By

Id No. Name131-107-0-145 Tofail Haque131-108-0-145 Syed Khalid Mahmud131-109-0-145 Saidur Rahman131-110-0-145 Touhid Alam131-111-0-145 Ulfat Jahan Purobi131-112-0-145 Md.Sajjadul Karim Bhuiyan131-114-0-145 Shakib Siddique

Testing of Textiles (Lab)Experiment No. 01

Experiment Name: Study on Yarn Count Measurement by Using Reel and Electronic Balance.

Theory: Yarn count is the numerical value which is expressed as the weight per unit length or length per unit weight.

English cotton count: No. of 840yd lengths per pound.Formula: (For Indirect System)

N=w× Ll×W

Where, N= yarn count w= unit of weight of the sampleW= weight of the sampleL= length of the samplel= unit length of sample

Objectives of Yarn Count :

Yarn count indicates fitness, thickness and coarseness of yarn. Yarn Count helps to produce specific quality of yarn. Yarn compressibility and their effect on fabric quality is important to both

the fabric designer and the textile technologist To determination of an accurate value for the sample length. Yarn diameter is used to predict fabric structural parameters such as width,

cover factor, porosity, and fabric comfort and so on. To determination of an accurate value for its weight and so on.

Method:

At first wrap reel is adjusted properly so that yarn is passed from the cone through the guides

The length of the sample is measured by the wrap reel counter In case of cotton, the circumference of wrap reel is 1.5 yd and required yarn

is 120 yards. In case of cotton, wrap reel is driven by motor and in jute wrap reel is

manually operated. In case of cotton wrap stops automatically when the specified amount of yarn is wound on it.

Then the sample is weighted by balance.

Calculation:

Weight = 2.158453.6 = .0047574956 lbs (gram converted into pound)

Ne= 120840×1

.004757 =30s

Result: Yarn count measurement by using real and electric balance is Ne =30s

Conclusion: Yarn count is mainly determined for the purpose of indicates the fitness, thickness and coarseness of yarn. So it is necessary to develop our knowledge about yarn count before starting work not only for yarn but in the textile world.