Textile Floor │Yarn count formula, Yarn count system, Yarn count calculation

In Textile sector Yarn count is very important term to find & express the thickness of yarn & thread. People who works with textile material knowing about yarn count is very essential thing. Here below described all about Yarn count formula for calculation..

Textile Floor │Yarn count formula for calculation:

Count i.e, Yarn Numbering System is a numerical value to measure yarn coarseness or fineness (diameter) and also indicate the relationship between length and weight (the mass per unit length or the length per unit mass)of that yarn. However, the concept of yarn count has been introduced which specifies a certain ratio of length to weight.

The fineness of the yarn is usually expressed in terms of its linear density or count. There are a number of systems and units for expressing yarn fineness.

There are mainly two types of Yarn Numbering Systems. Those are_

• Direct Yarn Count System (Fixed Length System) &
• Indirect Yarn Count System (Fixed Weight System)

Direct Yarn Count System (Fixed Length System):

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

The following formula is used to calculate the Direct yarn count:

N= (W×l) / (L×w)

Where,

N = Yarn count or numbering system
W = Weight of the sample at the official regain in the unit of the system
L= Length of the sample
l= Unit of length of the sample 

Different  Direct Yarn Count System & Their Definition_

• Tex system = NO. of grams per 1000 meters
• Denier = No. of grams per 9000 meters
• Deci Tex = No. of grams per 10,000 meters
• Millitex = No. of milli-grams per 1000 meters
• Kilotex = No. of kilo-grams per 1000 meters.
• Jute count = No. of Pounds(lb) per 14,400 yards 

Indirect Yarn Count System (Fixed Weight System):

The length of a fixed weight of yarn is measured. The length per unit weight is the yarn count. The common features of all indirect count systems are the weight of yarn is fixed and the Length of yarn varies according to its fineness.

The following formula is used to calculate they are count:

N = (L×w) / (W×l)
Where, 

N = Yarn count or numbering system
W = Weight of the sample at the official regain in the unit of the system
L = Length of the sample
l = Unit of length of the sample
w = Unit of weight of the sample. 

Different  Indirect Yarn Count System & Their Definition_

• Ne = No of 840 yards yarn (or 1 Hank) per 1 Pound
• Nm = No of 1000 meters yarn per 1 Kg
• Woollen (YSW) = No of 256 Yards yarn per 1 Pound
• Woollen (Dewsbury) = No of 256 Yards yarn per 1 Pound
• Worsted Count (NeK) = No of 560 Yards per 1 Pound
• Linen Count (NeL) = No of 300 Yards per 1 Pound