**How to Calculate Winding Efficiency with Example **

**S. M. Hossen Uzzal** Production Officer Monno Fabrics Ltd., Manikgonj **Email:** uhossen@gmail.com

Winding: **Winding** is basically transferring a yarn from one type of package to another. This simple definition may make the winding sound like a trivial process, however, it is an important and essential process in warping and spinning for ring spun yarns.
**Winding Efficiency: **The ratio of actual production and calculated production is called winding efficiency. It is expressed as percentage. The efficiency of a highly automated winding operation is calculated by modification of the mathematical model developed for a similar problem. Actual Production **Winding Efficiency **= **……………………………** X 100 Calculated Production **Note:** If you want to understand this problem then before you should must read the following articles
**Different Formula for Yarn Count Calculation**
**Length Calculation of a Cone of Sewing Thread **

**Example: **

**How long will it take for a winder to wind 3.00 lbs of 16 Ne yarn if the winder operates at 745yd/min. with the efficiency 95%?**

We know that,

**Time, t **= length / speed

= L / V

**Here, **

- L = Length of yarn in the package
- Speed, V = 745yd/min.
- Weight of the yarn in the package, W =3.00 lbs
**Yarn count**, Ne = 16

We know that, L × w **Yarn count, Ne** = **……………………………….. ** W × l Ne × l × W **Therefore, L** = **…………………………… ** W 16 x 3.00 x 840 = **………………………………** 1 = 40,320 yds 40,320 **So, t **= **.....................** 745 = 54.12 minutes (assuming no breaks or stops)

**To consider the effect of efficiency, **

54.12

**Therefore, t** = …………

0.95

= 56.97 minutes

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