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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 end-uses 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.
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| 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 |
