Corrugated fiberboard, or combined board, has two main components: the linerboard and medium. Both are made of a special kind of heavy paper called containerboard. Linerboard is the flat facing that adheres to the medium. The medium is the wavy, fluted paper in between the liners.
 |
Single Face
One medium is glued to one flat sheet of linerboard.
|
 |
 |
Single Wall
The medium is between two sheets of linerboard. Also, known as Double Face. |
|
 |
Double Wall
Three sheets of linerboard with two mediums in between. |
|
 |
Triple Wall
Four sheets of linerboard with three mediums in between. |
|
