# Sizing Calculation Formula in Weaving With Examples

Sizing Calculation Formula in Weaving:

To achieve the required quality sized yarn we have to know the calculation method of sizing in weaving. In another article, I have presented some mathematical problems and solutions to sizing. Now, this article presents some important formulas for sizing calculations, which are too much important to calculate sizing math.

### All Sizing Calculation Formula with Examples:

1. Total length of yarn sized,
=Total length of warp × Number of ends

2. Total weight of size on the warp,
= Weight of sized warp – the weight of the unsized warp

3. The weight of size to be put on the warp,
= Weight of unsized warp × size% required to be put on the warp,

4. Weight of unsized warp in pounds,
Length of warp in yds × Number of ends
=……………………………………………………………
840 × count

5. Weight of sized warp in the pound,
Length of warp in yds × No. of ends
=……………………………………………………
840 × yarn count

6. Size% on the warp,
Weight of size
=…………………………………. × 100%
Weight of unsized warp

7. Count of sized yarn,
Length of warp in yards × no. of ends
=………………………………………………….
840 × weight of sized warp in pounds

8. Count of sized yarn,
Count of unsized yarn × 100
=………………………………………..
100 + Size%

9. Sizing efficiency,
= {Actual production/Calculated production) × 100}

Examples of Sizing Calculation in Weaving:

Example-01:
The actual production of the high-speed slasher is 35000 yards per day of 8 hours. Calculate sizing efficiency if calculated production is 100 yards per minute.

Solution:
Given that,
Calculated production in yards per minute= 50,
Calculated production in yards per hour= (100×60) = 6000 yards,
Actual production in yards per 8 hours= 35000,

Now,
Actual production in yards per hour= (35000/8) = 4375 yards,

So,
Sizing efficiency,
= {Actual production/Calculated production) × 100}
= {(4375/6000) × 100}
= 72.92%.

So, sizing efficiency for this calculation stands at 72.92%

Example-02:
If the following data is given then calculate the count of sized warp yarn:
Length of warp in yards= 1200,
Number of ends= 3000,
Weight of sized warp in pounds= 120.

Solution:
Count of sized yarn,
Length of warp in yards × no. of ends
=…………………………………………………

840 × weight of sized warp in pounds

1200×3000
=……………………

840×1203

=   35.71s

So, the count of sized warp yarn is 35.71s.

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