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## Measurement the Weight of Woven Fabric

Measurement of Woven Fabric Weight
Amit Kumar Das
Founder of Textile Maniaa Blog
Pabna Textile engineering college, Pabna, Bangladesh
Email: jakicain6@gmail.com

We know that woven fabric is constructed of two types of yarn called warp and weft yarn. So in measuring the weight of any woven fabric we need to know the weights of warp and weft yarn separately. With those weight, by summation we will be able to find out actual weight of the fabric.
Now, lets turn towards to mathematical expression of those calculation,

1. Fabric weight = weight of warp yarn + weight of weft yarn

Length of warp yarn(inch)
2.Weight of warp yarn = ................................................... (lb)
840 x warp yarn count

Length of weft yarn(inch)
3. Weight of weft yarn = ................................................... (lb)
36 x 840 x weft yarn count

Lets solve a related math for clearing this

Mathematical problem:

32ˢ x 40ˢ
................ x 50ʹʹ
60 x 54

For this above Fabric specification, Find out the weight of 100 yds of fabric. Where Crimp % of warp and weft yarn is respectively 4% & 6%.

We can write an elaborate form of this math as:

A grey fabric of 100 yds length and 50 inch width. Whose number of warp and weft yarn used per inch are respectively 60 & 54.

Warp and weft yarn count 32 & 40.
Crimp% of warp = 4%
Crimp% of weft = 6%

Solution:

Warp yarn basis calculation:

Length of warp yarn = length of fabric x crimp%

100+4
=100 x ....................
100

=104 yds

Total length of warp yarn = Width of fabric x Number of yarn per inch

=50 x 60
=3000

Total length of warp yarn = 3000 x 104
=3,12,000 yds

Total length of warp yarn
Weight of warp yarn = ........................................
840 x count

3,12,000
= ..................
840 x 32

=11.61lb

Weft yarn basis calculation:

Weft yarn’s tape length = Width of fabric x crimp%

100+6
= 50 x ...................
100

= 53"

This is the length of warp required to weave a definite length of cloth is called tape length.

Number of yarn in weft = Length of fabric (inch) x Number of weft yarn per inch

= 100 x 36 x 54
1
Weight of weft yarn = Number of weft yarn x Weft’s tape length x ............................
36 x 840 x count

100 x 36 x 54 x 53 x 1
= ..................................
36 x 840 x count

= 8.52lb

So, Weight of fabric = (11.61+8.52)lb

=20.13 lb (ANS)

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