Corrugated board is a product that comes from paper. It is produced by gluing together at least one plain and one corrugated paper sheet. Paper, a light material, acquires extraordinary strength when corrugated. This is why the corrugationis the main characteristic, the “heart” of corrugated board.
A kind of lightweight construction made of paper creates a stable packaging material. The secret of stability lies in the shape of the corrugation.
The corrugation is produced in the first operation in the corrugator aggregate of the corrugator. The paper web running from the reel is moistened, heated and runs through heated corrugating rolls. Heat, moisture and the interlocking corrugating rolls emboss the paper into the desired corrugated shape. It is a kind of curling process; paper that is only folded would not have the same effect.