Yarn numbering system and types of yarn numbering system

Yarn Numbering System/Yarn Count: 

Thread sizes are communicated through various numbers and numbering systems which are derived by relating its unit length and weight. It is vital to understand numerous enumeration systems and their relationships in understanding thread size.

Definition: Count may be a numerical value, that categorical the coarseness or fineness (diameter) of the yarn and additionally indicate the connection between length and weight (the mass per unit length) of the yarn.

Therefore, the idea of yarn count has been introduced that specifies a precise ratio of length to width.

Types of yarn count:

1. Direct count system
2. Indirect count system

Direct count System

• The weight of a fixed length of yarn is determined by direct count system .
• The weight per unit length that is the yarn count.
• The common features of all direct count system are the length of yarn is fixed and the weight of yarn varies according to its fineness.

Direct count system and relation between unit length and unit mass in direct system:

The below formula have to use to calculate the yarn count:

N= (W × I)/L

Where, N= yarn count of numbering system
              W= Weight of the sample 
              L= Length of the sample 
               I= Unit of the sample
           

• The Tex of a yarn means the weight in gms of 1000 meters yarn. So that 40 Tex means 1000 meters of yarn weight 40 gm..
• The denier of yarn indicates the weight in grams yarn. So that 150 D means 9000 meters of yarn weight 150 gm.
• 100 D means 9000 meters of yarn weight hundred gm.

👉See more:;  Indirect system