This document discusses yarn count systems. It defines yarn count as a numerical expression of coarseness or fineness. There are two main systems - direct and indirect. The direct system measures weight per unit length. Examples given are Tex (grams per km), Denier (grams per 9 km), and Jute count (pounds per 14400 yards). The indirect system measures length per unit weight. Examples are English count (hanks of 840 yards per pound), Worsted count (hanks of 560 yards per pound), Yorkshire count (hanks of 256 yards per pound), and Metric count (km per kg). Formulas are provided to convert between different count systems, such as converting

1. YARN COUNTING
SYSTEM

2. Utso kumar saha
161-23-4622
Daffodil International
University

3. Content
Definition
Classification
Discussion about different system
Conversion.

4. Definition
Count is a numerical expression which
defined the coarseness or fineness of
yarn.

5. Yarn count systems
Yarn count
systems
Direct Indirect

6. Yarn count systems
Direct System: The direct system of yarn count
is based on measuring the weight per unit
length of a yarn.
Count,D=
=    
   wtUnit weighLlengthSample
llengthUnitWWeightSample


   
   wgmintUnit weighLkminlengthSample
kminlengthUnitWgminWeightSample

 l
wL
W

l

7. Classification of Direct System
Tex: Weight in grams of 1 km yarn.
Denier: Weight in grams of 9 km yarn.
Jute/Wool/Hemp Count: Weight in pounds of 14400 yards yarn.
1gmL
W
Jute



1gmL
1kmW
Tex



1gmL
9kmW
Denier



pound1L
yards14400W
Jute




8. Problems
 The weight of 100 km yarn is 1 kg. Find out the yarn count in
Tex, Denier and Jute count?[1kg=2.2pounds, 1m=1.091yards]
1gmL
1kmW
Tex



10
1100
11000



90
1100
91000
1gmL
9kmW
Denier







0.29
1yards109361.329
14400yards2.2pounds
pound1L
4400yards1W
Jute








9. Yarn count systems
Indirect System: The indirect system of yarn
count is based on measuring the length per unit
weight of a yarn.
Count,N=
=
   
   lhankinlengthUnitWpoundsinweightSample
wpoundintUnit weighLyardsinlengthSample


l

W
wL

10. Classification of Indirect System
 English Count, Ne: Length in hanks of 840 yards per pound.
 Worsted Count, Nw: Length in hanks of 560 yards per
pound.
560yardsW
pound1L
Nw



840yardsW
1poundL
Ne




11. Classification of Indirect System
Yorkshire Count, Ny: Length in hanks of 256 yards
per pound.
Metric/British Count, Nm: Length in kilometers per
kg.
56yards2W
pound1L
Ny



km1W
kg1L
Nm




12. Problems
The weight of 1200 yards yarn is 0.1 pounds. Find
out the yarn count in Ne, Nw, Ny, Nm.
43.21
5600.1pound
pound11200yards
yards560W
1poundL
Ne







yards
88.46
2560.1pound
pound11200yards
yards562W
1poundL
Ny







yards

13. Problems
The weight of 1200 yards yarn is 0.1 pounds. Find
out the yarn count in Ne, Nw, Ny, Nm.
26.24
1000453.59gm0.1
1000gm917.01200
10000.1pound
1000gm1200yards
1000mW
1000gmL
Nm










m
m
m
21.43
5600.1pound
1pound1200yards
560yardsW
1poundL
Nw







yards

14. COUNT CONVERSION

15. Direct To Direct
 Count,D=
 For the same sample,
(1)
 Again,
wL
W

l
D
L
W

l
w
D
L
W

1
1
1
w
D
L
W
l

2
2
2
w
D
L
W
l

2
2
2
1
1
1
w
D
w
D
ll


16. Direct To Direct
 By using equation no. (1) we get,
And,
Again,
9TexDenier
1gm
9km
1km
1gm
TexDenier
1km
1gm
Tex
9km
1gm
Denier



37.33JuteTex
1
13.199km
453.59gm
JuteTex
13.199km
453.59gm
Jute
1km
1gm
Tex
14400yards
1pound
Jute
1km
1gm
Tex





gm
km
29.309JuteDenier
1gm
9km
13.199km
453.59gm
JuteDenier
13.199km
453.59gm
Jute
9km
1gm
Denier





17. Indirect To Indirect
 Count N=
 For the same sample,
 (2)
l

W
wL
w
N
W
L l

2
2
2
1
1
1
w
N
W
L
And,
w
N
W
L
l
l

 2
2
2
1
1
1
w
N
w
N
ll


18. Indirect To Indirect
By using equation no. (2) we get,
0.305NyNe
840yards
1pound
pound1
256yards
NyNe
pound1
256yards
Ny
1pound
840yards
Ne



0.67NwNe
840yards
pound1
pound1
560yards
NwNe
pound1
560yards
Nw
1pound
840yards
Ne




19. Indirect To Indirect
Again
0.58NmNe
840yards
1pound
s2.205pound
1091yards
NmNe
s2.205pound
1091yards
Nm
1pound
840yards
Ne
kg1
1km
Nm
1pound
840yards
Ne




2.2NwNy
256yards
pound1
pound1
560yards
NwNy
pound1
560yards
Nw
pound1
256yards
Ny




20. Direct To Indirect
Indirect Count, N=
Direct Count, D=
For the same sample,
(1)
wL
W

l
l

W
wL
w
N
W
L l

wD
1
W
L l

w
ll

D
1
w
N

21. Direct To Indirect
By using equation no (1) we get,

22. Direct To Indirect
Using 1 again

23. Thank You