Yarn Number or Count Measurement System

Yarn Number or Count Measurement System
S. M. Hossen Uzzal
Production Officer
Monno Fabrics Ltd., Manikgonj
Email: uhossen@gmail.com



Count:
Count of yarn is very important to produce specific quality yarn. It is the coarseness or fineness of yarn. In the other hand, we can say count is a number is determined the mass per length or the length per unit.


Count Measurement System: 
There is two systems for the measurement of count. 

  1. Direct System
  2. Indirect System
Direct System:
In this counting system, the yarn number or count is the weight of a unit length of yarn. Here, higher the number, finer the yarn and vice versa. Here, the weight of yarn is fixed, length is variable.

Formula:

       W X l
N = …………….
       w X L

Where, 


N = Yarn count
L = Length of sample
l = Unit length
W = Weight of sample
w = Unit weight

Commonly used units in this system of measurement are:- 

 
  • Tex ( 1 Tex = 1g/ 1000m )
  • Spyndle (1 Syndle = 1lb/14400yds)
  • Denier ( 1 Denier = 1g/ 9000m )
Indirect System:
In this counting system the yarn number or count is the length of a unit weight of yarn. Here, lower the number, finer the yarn and vice versa. Here, the length of yarn is fixed, weight is variable.

Formula:

       L X w
N = ………………..
       l X W

Where, 


N = Yarn count
L = Length of sample
l = Unit length
W = Weight of sample
w = Unit weight

Commonly used units in this system of measurement are:- 

 
  • Cotton or English Count
  • Metric Count
  • Worsted Count

 
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