22 July 2019 The grammage and basis weight are common words used in the paper and corrugated industry. But what does it mean if you have a 90 flute?
In most offices we use 80g/m2 print paper and it means that a sheet paper of 1m2 weighs 80 gram. It is specified by ISO 536 and used in Europe and most parts of the world. So if you have a 90 flute in your corrugated box, it means that 1sqm has the weight of 90 grams. If you have a 250 kraft liner, it is made of kraft paper and weighs 250 g/m2. The weight is a good indication of the thickness of the papers. The higher the number, the thicker the paper is.