Corrugated boxes are made up of corrugated paperboard that contains rows of air columns. The columns make the paper stronger than average cardboard with the air acting as a cushion for any items inside of them. The ridges inside offer strength and flexibility, as usually intended in packaging.

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Corrugated Packaging

Corrugated fiberboard or “combined board” has two main components: the liner and the medium. Both are made of a special kind of heavy paper called containerboard.