YARN NUMBERING SYSTEM
Ramandeep Singh
B.Tech, Dept. of Textile Engineering
Giani Zail Singh Punjab Technical University Campus,
Bathinda, Punjab, India
Email: rmnsandhu3335@gmail.com
Count or Linear Density:
The different enduses require yarns of different thickness . The accepted way to indicate the thickness of a yarn or material in various stages of yarn manufacturing , is to give the yarn count or linear density.
Count measurement machine 
Types of Numbering Systems :
There are two types of systems available for expressing the count / linear density of the yarn / material :
 INDIRECT SYSTEM
 DIRECT SYSTEM
In this system the weight unit is fixed and the length of the yarn varies as per its thickness . The following system are indirect systems :
 New English System
 New Metric System
The number of hanks of 840 yards in one pound weight is known as the count of the yarn . It is also known as cotton count and is denoted by Ne .
No. of Hanks ( Hank of 840 yards )
Count (Ne) = 
1 lb weight
New Metric System :
The number of hanks of 1000 meters length in one kilogram weight is called the count of the yarn in this system . It is denoted by Nm .
No. of Hanks ( Hank of 1000 meters )
Count (Nm) = 
1 kg weight
DIRECT SYSTEM :
In this system the length unit is fixed and the weight of the yarn / fiber varies as per its thickness . The following system are direct systems :
 Denier System
 Tex System
Weight in grams of yarn/fiber of 9000 meter length is called the Denier of that particular yarn/fiber .
Denier = weight in grams of 9000 meters length
Tex System :
Weight in grams of yarn/fiber of 1000 meter length is called the Tex of that particular yarn/fiber .
Tex = weight in grams of 1000 meters length
Count Comparison Table:
GIVEN
DETERMIND

Ne

Nm

Tex

Decitex

Denier

Ne

1.0

Nm / 1.69

590.5/Tex

5905/d tex

5315/denier

Nm

1.69 x Ne

1.0

1,000/Tex

10,000/d tex

9000/denier

Tex

590.5/Ne

1,000 / Nm

1.0

Decitex0.1

Denier / 9

Decitex

5905/Ne

10,000/Nm

Tex x 10

1.0

Denier / 0.9

Denier

5315/Ne

9,000/Nm

Tex x 9

decitex0.9

1.0
