GSM calculation of fabric
Fabric is the basic raw material to produce any particular garments . Before going to bulk production , it is quite essential to know and test the GSM of the supplied fabric by the supplier. This GSM can directly be got through GSM cutter .
What is GSM?
Fabric GSM means the weight of fabric in grams in per square meter area. So the higher the GSM , the higher bulkier will be the fabric and vice versa , even they can be of same construction
Fabric Costruction
Fabric Construction is a term in which some fabric detailing are available such as
(as we have to go to meter cause EPI is in inches but GSM is in meter unit and 1 meter=39.37 inches )
Length of each 1 meter yarn allowing the crimp % = 1m + 1m x 3% ( Let, warp crimp = 3%) = 1m + 1m x 0.03
= 1m+ 0.03 m = 1.03 m
(this is necessary to find out 1 meter yarn length because when we take 1 meter in both warp and weft , it’s covered area will be 1m x 1m =1 m2 which is identical to GSM unit that is – Grmas per Square Meter)
So . total length of warp yarn = 3622.04×1.03
= 3730.71 m
( Here , L = Length found , w=1 lb = 453.6 gm , W= Weight found/needed , l = 840×0.9144 meter)
[ As from the above formula , 453.6 gm means 1lb and 0 .9144 meter means 1 yd which came from the definition of Ne where weight unit is fixed to 1lb and length unit to 840 yds as a constant in the formula]
