yarn property

2. Definition :Count is the numerical expression which
express/indicates coarseness or fineness of yarn.
A definition of yarn count is given by textile institute
“count a number indicating the mass per unit length or the
length per unit mass of yarn”

3. Several systems and unit are used for expressing the yarn number.
Depending on the material used for preparing the yarn.
1. Indirect system
2. Direct system
3. Universal system

4. • In this system the count is the number of units of length per unit of weight of yarn. In this
case higher the count, finer is the yarn. This system is generally used for cotton, woolen,
worsted linnet.
Let N=The yarn number or count
W=The weight of the sample
w= The unit of weight of the system
L= The weight of the sample
l= The length of the sample
Then, N= L×w/l×W

5. In this system the count of the yarn is the number of units of weights per unit length of yarn.
This system is used for jute silk and synthetic etc.
Let N= The yarn number or count
W= The weight of the sample
L= The weight of the sample
l= The length of the sample
Then, N=W×l/L

6. Tex system of yarn numbering is called as universal system. This is
direct system of yarn numbering and introduce by international
standards organization.

7. 1. Tex:
Count in the tex system is the weight in grams of 1000m or 1 km of yarn
2. Denier:
The number of count in the denier system is the weight in gm s of 9000m or 9km of yarn.
3. Ponuds per spindle:
The yarn in he pound per spindle system is the weight in pound of 14400yards of yarns of
yarn.
4. English system:
The yarn number or count is defined as the number of hanks 840yds per pound.
5. Metric:
It is defined as the no of hanks (1000m)per kg

8. 6. Worsted:
It is defined as the number of hanks(560yds) per pound.
7. Millitex:
Count in the millitex system is the weight in milligram of 1km of yarn.
8. kolotex:
Count in the kilotex system is the weight in the milligram of 1km of yarn.
9. Wollen:
Count in wollen system is the weight in grain of 20yds of yarns

9. There are four systems for conversion of yarn count from one
system to another system:
I. Indirect to indirect
II. Direct to direct
III. Indirect to direct
IV. Direct to indirect

10.  English(Ne) × Tex = 590.5
 English(Ne) × Denier = 5315
 English(Ne) = Metric(Nm) × .59
 Metric(Nm) = English(Ne) × 1.7
 Denier × .111 = Tex
 Denier = 9 × Tex

11. Indirect system:
Direct system:

14. Quadrant balance method.
Knowles balance.
Beesleys balance.
Sliver, roving count by measuring drum.
Count data system.
Auto sorter by user.
Warp reel and balance method

15. Figure of some instrument for cotton determination
Fig: analytical balance

17. Fig: Sliver roving count by measuring drum

18. Figure: warp reel mechine

19. Figure: Quadrant balance machine

20. Figure: Beesley’s balance machine