**What is Winding Efficiency in Weaving?**

The percentage expression of the ratio of the actual production to the calculated production is termed as **winding efficiency**. It should be noted here that, actual production is lower than calculated production.

Winding efficiency calculation in weaving |

**Winding Efficiency Calculation Method Followed in Textile Weaving Industry:**

Winding efficiency can be calculated by using the below formula:

**Winding Efficiency= {(Actual production/ Calculated production) ×100}**

**Problem-01:**

What will be the winding efficiency, if a super speed cone winder runs 16 hours to wind 2388 lbs of 20s cotton on 40 drums, where the calculated production of winding is 1298 yds per minute?

**Solution:**

Here,

Amount of yarns in pounds (lb) = 2388 lbs,

**Yarn count**=20s,

Number of drums=40,

Calculated rate of winding in minutes= 1298 yds= (1298/840) hank= 1.55 hank,

Calculated rate of winding in hour (Calculated production) = 1.55 hank×60=93 hank

Required time= 16 hours,

Winding efficiency=?

**Now,**

Actual production in hanks

Amount of yarns in pounds × yarn count

=…………………………………………………

Time required × Number of drums

2388×20

=………………

16×40

= 74.63 hank

Finally,

Winding Efficiency= {(Actual production/ Calculated production) ×100}

= {(74.63/93) ×100}

=80%

**So,**winding efficiency for this calculation is 80%.

**Problem-02:**

Calculate the winding efficiency of a modern high speed cone winding machine if its actual production per 8 hours is found to be 384 hanks. The rate of winding (calculated) is 800 yds per minute.

**Solution:**

Here,

Calculated production in minute= 800yds,

Time= 8 hours,

Winding efficiency=?

**So,**

Winding efficiency= {(Actual production/Calculated production) × 100}………….. (1)

**Now,**

Calculated production in 8 hours= (800×60×8) yds=384000yds,

Actual production in 8 hours= (384×840) yds= 322560 yds,

Now, from equation (1), we get,

Winding efficiency= {(322560/384000) × 100}

= 84%

**So,**winding efficiency for this calculation is 84%.

**Problem-03:**

Production of pirn

**winding machine**per shift per spindle is 10 pounds for 30s cotton count. If the machine runs at 600 yds per minute then calculate winding efficiency.**Solution:**

Here,

Calculated production per minute= 600 yds,

Time= 1 shift= 8 hours,

Yarn count= 30s,

Winding efficiency=?

So,

Winding efficiency= {(Actual production/Calculated production) × 100}………….. (1)

Now,

Calculated production in per spindle per shift= (600×60×8) yds=288000yds,

Actual production in 8 hours= (10×840×yarn count) yds=(10×840×30) yds= 252000 yds,

Now, from equation (1), we get,

Winding efficiency= {(252000/288000) × 100}

= 88%

**So,**winding efficiency for this calculation stands at 88%.