what are corrugated made of
How is Corrugated Cardboard made? Corrugated cardboard is used for making boxes of all shapes and sizes. You must be familiar with the pizza box which is nothing but a bright box made from corrugated cardboard. Corrugated cardboard is a material made up of a fluted and ridged paper sheet and two or more flat linerboards. Corrugated cardboard is durable and thick made up of a wavy middle layer. Mailing boxes and most packaging material is made out of corrugated cardboard.