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System of Conversion of Yarn Count


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





Conversion of Count System:
We can convert the value of count from one to other system by followings only some formulas. There are 4 systems for conversion of yarn count from one system to another system.

  1. Conversion from direct to direct
  2. Conversion from indirect to indirect
  3. Conversion from direct to indirect &
  4. Conversion from indirect to direct 
There are two formulas to convert the yarn count as given billow
  1. Unknown count = Multiplying converting factor X Given count
  2. Unknown count = Constant / Given count
Here the first one is used for first two group of conversion (direct to direct & indirect to indirect) and second one is for last two group including direct to indirect & indirect to direct. 
 
Before read this conversion system you should read the following articles as a result you can understand easily.

  1. Indirect System of Yarn Numbering and Calculation
  2. Direct System of Numbering Yarns and Calculations
  3. Yarn Count Conversion Calculation
The table of converting factor and the count constant is given billow;

Direct to Direct: 
Known yarn
count in
Multiplying converting factor for unknown count
Tex
Denier
Tex
-------
9
Denier
0.1111
------
Jute count
34.45
310
Example;  
  • Denier of unknown count = Tex (known count)  X  9
  • Tex of unknown count = 0.1111  X  Den or Jute count
Indirect to Indirect:
Known yarn
count in
Multiplying converting factor for unknown count
Metric (Nm)
Worsted
Cotton (Ne)
17
1.5
Example; 
  • Metric Count = 17 X Known cotton or worsted count
  • Worsted Count = 1.5 X Known cotton or Metric count
Indirect to Indirect & Direct to Direct:
Known yarn
count in
Constant
Tex
Denier
Cotton
590.5
5315
Metric
1000
9000
Example; 
  • Metric = 9000/Known Den count
  • Denier = 5315/Known Ne
If we see the conversion formula at a glance then concept will be clear about conversion of yarn count.

Conversion formula:
  1. Denier = 9 X Tex
  2. Ne X Denier = 0.5315
  3. Metric X Tex = 1000
  4. Tex X Ne = 590.5
  5. Ne = Metric X 0.5905
  6. Metric X Denier = 9000
  7. Tex = 34.45 X lb/ spyndle 
 

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