I need guidance about grammage of corrugated box , cardboards and plastic foil
-How to calculate ?
-Used same method for all three or different method for each?
Currently , I’m try to solve this problem through this method: GSM =gm/m2
-cut sample 1 inch square
-then weight this sample cut sample
- now using formula
I’m using this method for all type of packaging. But every time reading are vary …
Kindly , packaging expert guide me for right method …