**Winding:**

Winding is basically transferring 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. In this article, we will know how to calculate winding efficiency with an example.

**Winding Efficiency:**

The ratio of actual production and calculated production is called winding efficiency. It is expressed as a percentage. The efficiency of a highly automated winding operation is calculated by a modification of the mathematical model developed for a similar problem.

………………………………………..Actual Production

**Winding Efficiency** = ………………………………….. X 100

…………………………………….Calculated Production

**How to Calculate Winding Efficiency with Example**

*Note: If you want to understand this problem then before you must read the following articles.*

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**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 an efficiency of 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

**Key Factors of Winding Efficiency:**

There are some key factors of winding efficiency which has pointed out in the following:

- Yarn count,
- Yarn quality,
- Capacity utilization,
- Power failure,
- Maintenance and overhauling,
- Worker efficiency,
- Workload per worker,
- Humidity,
- Creeling time,
- Doffing time,
- Spindle of drum speed and so on.

Author of this Article:M. Hossen UzzalProduction Officer Monno Fabrics Ltd., Manikgonj Email: [email protected]