Fluting provides the edge crush (stacking) strength for corrugated.
What Is Corrugated? Corrugated has a ruffly layer, called "fluting," between smooth sheets, called "liner." Many types of corrugated are available, each with different flute sizes and thicknesses. The corrugated paper most commonly used to make boxes has one layer of fluting between two smooth sheets. Corrugated is made primarily from lumber industry byproducts, such as sawdust and wood chips. Nowadays, one of the most frequently used raw materials for making corrugated is old corrugated. So the next time you see a corrugated box, you'll know that it is recyclable, and that some of the fiber in it has probably been recycled once or twice already!
Corrugated: An Economical Material Corrugated's light weight and ability to "knock down" makes transport from box plants to filling warehouses comparatively inexpensive-it takes less energy to transport per box. Corrugated is an inexpensive packaging material compared to most. Mass production of corrugated containers makes them particularly cost-efficient. How Corrugated Is Used Corrugated is used to make shipping containers (boxes), product packaging, display modules and for many other industrial applications.