Corrugated flutes describe the structure of the material in the center (wave-shaped cardboard) that makes up the board's corrugation. There are several different types of flutes, ranging from A to F.
A-Flutes: 36 Flutes/linear foot (The highest flute size).
B-Flutes: 49 Flutes/linear foot (Lower arch heights than "A").
C-Flutes: 41 Flutes/linear foot (Split difference between "A" and "B").
E-Flutes: 90 Flutes/linear foot (Greatest number of flutes/foot).
F-Flutes: 128 Flutes/linear foot (Most popular choice for corrugated).
Flute Types:
Single board consists of two liners separated by medium in one of four typical flute configurations: C, B, A or E.
These flutes evolved over time in response to changing manufacturing and distribution demands. The letter sequence refers to the sequence of development.
Corrugated Combos:
Doublewall consists of two outside liners and a middle liner separated by two mediums. Typically B and C mediums are used in combination.
Triplewall consists of four liners separated by three mediums.
Linerboard Combos:
Linerboard combos come is different shapes and sizes. For questions, please contact one of our sales specialists today.