**Length Calculation of a Cone of Sewing Thread**

**S. M. Hossen Uzzal**

Production Officer

Monno Fabrics Ltd., Manikgonj

**Email:**uhossen@gmail.com

**Introduction:**

Sewing thread is a ply yarn. Ply yarns are produced by twisting two or more singles yarns together. This increases the strength of the yarn. The singles yarns may be of equal or different

**count**and they may be twisted together in one or several stages. Yarns of different count are twisted together in fancy yarns, for instance.Sewing thread in cone form |

If you want to calculate sewing thread of a cone then you have to must read this article “Different Formula for Yarn Count Calculation”.

**Length calculation of a cone of sewing thread :**

__What length of yarn is contained in 95 gm of a yarn of Ne 50/2?__

**Example1:**

**Solution:**We know that,

L × w

**Ne**(Indirect system) =

**………………………………..**

W × l

Ne × l × W

Or, L =

**……………………………**………..(1)

W

**Here,**

- Ne = 50/2 = 25
- W = 95 gm
- W = 1 lb = 453.6 gm
- l = 840 yds = 840 × 0.91 m

**From Equation …..(1)**

L = (25 × 840 × 0.91 × 95)/ 453

L = 4002.31 m (

**ANS)**

From the above calculation, the formula can be developed to calculate the length of

**sewing thread**from a cone as follows:

**For Ne (Indirect System):**

L = (N

_{R}x W) x (840 x 0.9144) / 453.6

Or, L =(N

_{R}x W) x 1.6933

**Where,**

- L = Length of the yarn in metre(m)
- N
_{R}=Resultant or ply count of yarn in Ne system - W =Weight Of the Yarn in gram(gm)
- 1.6933=Constant value (Only for Ne system)

**For Nm (Direct system):**

L= (N

_{R}x W)x 1000 / 1000

Or, L=(N

_{R}x W)

**Where,**

- L = Length of the yarn in metre(m)
- N
_{R}= Resultant or ply count of yarn - W = Weight of the yarn in gram (gm)