Yarn count
It is a numerical expression that defines yarn's fineness or coarseness. It also expresses whether the yarn is thick or thin. It is also known as the linear density of the yarn. According to the textile institute, yarn count indicates the length per unit weight or weight per unit length of the yarn.
{getToc} $title={Table of Contents}
Types of Yarn count
- Indirect system
- Direct system
 |
| Yarn |
Indirect system
In this system, the weight unit is fixed.
| Numbering System | Length Unit (l) | Fixed Weight Unit (w) |
|---|
| English Count | 840 yards (768.1 meters) | 1 pound (453.46 gm) |
| Metric Count | 1000 meters | 1 Kg |
| French Count | 1000 meters | 500 gm |
| Worsted Count | 560 yards | 1 pound (453.46 gm) |
Calculation Formula of Indirect System
 |
Indirect Count Calculation Formula
©Textile Pad |
English Count (Ne): Number of hanks of 840 yards that weigh 1 pound.
Ne = {1 pound / 840 yards} ✕ {Sample Length (L) / Sample Weight (W)}
Metric Count (Nm): Number of hanks of 1000 meters that weigh 1 kg.
Nm = {1 kg / 1000 meters} ✕ {Sample Length (L) / Sample Weight (W)}
French Count (Nf): Number of hanks of 1000 meters that weigh 500 gm.
Nf = {500 gm / 1000 meters} ✕ {Sample Length (L) / Sample Weight (W)}
Worsted count (Nw): Number of hanks of 560 yards that weigh 1 pound.
Nw = {1 pound / 560 yards} ✕ {Sample Length (L) / Sample Weight (W)}
Direct System
In this system, the length unit is fixed.
| Numbering System | Fixed Length Unit (l) | Weight Unit (w) |
|---|
| Tex Count | 1000 meters | No of Grams |
| Denier Count | 9000 meters | No of Grams |
| Pound/Spindle | 14400 yards (13.17 km) | 1 pound (0.45 kg) |
Calculation Formula of Direct System
 |
Direct Count Calculation Formula
©Textile Pad |
Tex Count: Weight of yarn in gm present in 1000 meters.
Tex Count = {1000 meters / 1 gm} ✕ {Sample Weight (W) / Sample Length (L)}
Denier Count: Weight of yarn in gm present in 9000 meters.
Denier Count = {9000 meters / 1 gm} ✕ {Sample Weight (W) / Sample Length (L)}
Pound/Spindle Count: Number of jute yarn of 1 pound presents in 14400 yards.
Pound/Spindle Count = {14400 yards / 1 pound} ✕ {Sample Weight (W) / Sample Length (L)}
Problem Solving
Problem: The weight of 100 km yarn is 1 kg. Find out the yarn count in Tex, Denier, and Jute Count?
Solve:
Given,
Sample Weight (W) = 1 kg = 1000 gm
Sample Length (L) = 100 km = (100 ✕ 1000) meters
We know, Tex Count = (1000 meters / 1 gm) ✕ {Sample Weight (W) / Sample Length (L)}
= (1000 meters / 1 gm) ✕ {1000 gm / (100 ✕ 1000) meters} = 10 Tex
We know, Denier Count = (9000 meters / 1 gm) ✕ {Sample Weight (W) / Sample Length (L)}
= (9000 meters / 1 gm) ✕ {1000 gm / (100 ✕ 1000) meters} = 90 Denier
We know, Pound/Spindle Count = (14400 yards / 1 pound) ✕ {Sample Weight (W) / Sample Length (L)}
= (14400 yards / 453.46 gm) ✕ [(1000 gm) / {(100 ✕ 1000) meters ✕ 1.091 yards}] = 0.29 Pound/Spindle. [1 Pound = 453.46 gm and 1 meter = 1.091 yards]
How to determine yarn count by count data system?
