Different types of yarn counting system?

There are many types of count which are classified under direct and indirect system. Various types of count in direct and indirect system are as following:

Direct system

Tex: Count in the Tex system is the weight in grams of 1000m or 1km of yarn. From an example we will understand it easily.

If the weight of 3000meters yarn is 2.5grams, then what will be the count in Tex for the yarn?

We know that Tex is calculated in direct system. For direct system, Count, N = (W×l)/L

Where,

N = The yarn number or count.

W = The weight of the sample = 2.5gm

L = The length of the sample = 3000m

w = The unit of weight of the system = 1gm

l = The unit of length of the system = 1000m

Now, Count, N = (W×l)/L = (2.5×1000)/3000 = 0.83

So, count is 0.83Tex.

Denier: The number or count in the denier system is the weight in grams of 9000m or 9km of yarn.

Pounds per spindle: The yarn number or count in the pound per spindle system is the weight in pounds of 14400 yards of yarn. This count is used for jute.

Millitex: Count in Millitex system is the weight in milligram of 1km of yarn.

Kilotex: Count in the kilotex system is the weight in kilogram of 1 km of yarn.

Wollen: Count in wollen system is the weight in grain of 20 yards of yarn.

Indirect system

English count: The yarn count is defined as the number of hanks of 840 yards per pound. We should know that, the length of 840 yards yarn is called 1 hank. By the same way, 2520 yards yarn is equal to 3 hank.

If one pound of yarn contains 30 hanks of 840 yds, then in English system count will be 30 Ne. It is denoted by Ne. Here, length of the 30Ne yarn is (840×30) = 25200 yds as hank is 30 and unit length is 840yds.

For example, If the weight of 3000meters yarn is 2.5grams, then what will be the English count for the yarn?

We know that English count is calculated in indirect system. For indirect system, Count, N = (L×w)/(l×W)

Where,

N = The yarn number or count.

W = The weight of the sample = 2.5gm = 0.00551lb

L = The length of the sample = 3000m = 3270yds

w = The unit of weight of the system = 1lb

l = The unit of length of the system = 840yds

Now, Count, N = (L×w)/(l×W) = (3270×1)/ (840×0.00551) = 706.5 Ne.

So, count is 706.5Ne.

English count is used for cotton.

Metric: It is defined as the no of hanks(1000m) per kg e.g. if one kg of yarn contains 40 hanks of 1000m, then in metric system count will be 40 Nm. It is denoted by Nm.

Worsted: It is defined as the number of hanks(560yds) per pound e.g. if one pound of yarn contain 30 hanks of 560 yds, then in worsted system count will be 30 worsted.