# How to Calculate Winding Efficiency with Example

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:

1. Yarn count,
2. Yarn quality,
3. Capacity utilization,
4. Power failure,
5. Maintenance and overhauling,
6. Worker efficiency,
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