A corrugated form of cardboard paper is a type that is made up of a combination of paperboards, generally two smooth boards and one fluted corrugation layer. These boards are tougher than normal paperboards. The arches between the two layers of boards give them the required strength and make them impact resistant. Corrugated boards are used to make boxes for storage and shipping. They are also perfect for creating inexpensive display boards at schools. You can even lay them down on the floor to protect the floor from messy materials when your children are doing some artwork.