## Yarn Count System and Conversions

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.
 Count measurement machine
The length of the material is measured out , and then weighed . Count is expressed as the length per unit mass.The linear density is expressed as mass per unit length . Each system is referred to as being either indirect or direct .

Types of Numbering Systems :
There are two types of systems available for expressing the count / linear density of the yarn / material :
1. INDIRECT SYSTEM
2. DIRECT SYSTEM
INDIRECT 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
New English 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
Denier 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

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### Editor-in-Chief:

Mazharul Islam Kiron is a textile consultant and researcher on online business promotion. He is working with one European textile machinery company as a country agent. He is also a contributor of Wikipedia.