Medium
The paper that is fluted on the corrugator and sits between the liners.
See it on Packgent
Related terms
- Linerboard
- The flat paper glued to each face of the fluted medium.
- Flute
- The wave-shaped medium inside corrugated board, and the size class of that wave (A, B, C, E, F).
- Take-up factor
- How much more medium goes into a length of board than the board's own length, because the medium is fluted.
- Basis weight
- The weight of a fixed area of paper, in the US usually pounds per thousand square feet (lb/MSF).
- Combined board
- The finished corrugated sheet: one or more fluted mediums glued between flat liners.
Definitions written by Packgent, last reviewed 2026-10-27. All terms.