Determination Of The Jute Count Of Cotton Yarn By Wrap Reel And Electric balance

Introduction: Yarn count is numerical expression of fineness or coarseness and indicates the relationship between length one weight of the yarn .

Jute Rope

yarn count :- can be calculate by 2 system

1. Direct system
2. Indirect system

object:-

• to know the count of jute yarn
• control the quality of yarn for better production

Working principle:- 

we know that in the direct system the following is used for lb/spyndle count

yarn count:-

In this system there are mainly used .They are warp reel contain yarn and handle for notate the electric balance is used for sample weight.

Apparatus:-

1. Electric balance 
2. Yarn Package

Wrap reel

Working procedure:-

• At first we take a bobbin and put on the carrier.
• The Yarn pass through the tensioner the warp reel. 
• The take a lea of yarn and measured weight by the .
• The complete calculation the find the count CV% control point.
• Finally draw the graph of control limit and all data of the yarn into the graph.

Calculation: From table Jute count

We know ,jute yarn count =(sample weihgt ÷ weight of unit ) × (lenght unit × sample lenght)

So ,

jute yarn count1 = (1.65÷453.46) × (14400÷ 6) = 8.73

         

jute yarn count2 =(1.61÷453.46) × (14400÷ 6) = 8.52

jute yarn count3 = (1.60÷453.46) × (14400÷ 6) = 8.46

jute yarn count4 = (1.63÷453.46) × (14400÷ 6) = 8.63

jute yarn count5 = (1.64÷453.46) × (14400÷ 6) = 8.68

Average count: =8.60

From table 2:- SD =0.112

CV% = 1.30

CL = 9

UCL = 17.39

LCL = 000

UWAL = 14.46

LWAL =2.73

Table 01:- Table for average count

Obs no	Sample length	Length unit	Sample weight	Weight count	Count	Average count
1	6	14400	1.65	1lb	8.73	8.60
2	6	14400	1,61	1lb	8.52
3	6	14400	1.60	1lb	8.46
4	6	14400	1.63	1lb	8.63
5	6	14400	1.64	1lb	8.68

Table 2:-Table for efficient of variation

Obs no	count	Average count	(Xi-X)2	SD	CV%
1	8.73	8.60	0.0169	0.112	1.30
2	8.52		0.0064
3	8.46		0.0196
4	8.63		0.0009
5	8.68		0.0064

Table 3:- table for controlling Value

UCL	UWAL	CL	LWAL	LCL
17.39	14.46	9	2.73	0

 Result:- Average count of lb/spyndle yarn is 9 and CV %= 1.30

Remarks:- By this experiment we get a cran concept about lb /spyndle count of yarn . It is very important for counting yarn.....