Sizing Calculation Formula in Weaving With Examples

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.

=Total length of warp × Number of ends

= Weight of sized warp – the weight of the unsized warp

= Weight of unsized warp × size% required to be put on the warp,

    Length of warp in yds × Number of ends

=……………………………………………………………

                         840 × count

    Length of warp in yds × No. of ends

=……………………………………………………

                 840 × yarn count

          Weight of size

=…………………………………. × 100%

    Weight of unsized warp

    Length of warp in yards × no. of ends

=………………………………………………….

    840 × weight of sized warp in pounds

    Count of unsized yarn × 100

=………………………………………..

               100 + Size%

= {Actual production/Calculated production) × 100}

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.

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%

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.

Count of sized yarn,

    Length of warp in yards × no. of ends

=…………………………………………………

    1200×3000

=……………………

=   35.71s

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