Corrugated sheets are the semi-products in manufacturing of corrugated boxes. All corrugated boxes are made of corrugated sheets. It is made on machines called corrugators. It is also known as corrugated fiberboard, corrugated cardboard. Unlike general cardboard which might be containing heavy paper-pulp based board, corrugated boards are made of one corrugated paper sheet sandwiched between two normal paper sheets. Based on the usage, different types of corrugated sheets are used on the basis of thickness in terms of layers of papers used in making.
Corrugated sheets, if compared to general cardboard, have more strength and are light in weight. The air present between the flutes acts as an insulator for the containment. The flutes also incorporates additional cushioning which ensures safety for the containment during the jerks and bruises faced during transportation/shipping.