Corrugated card (or corrugated cardboard) has a number of different advantages over other materials. This is especially true when corrugated card is being compared to other types of paper material used for storage (such as multi-layer paper or thin plastic), since corrugated card is most commonly used for making boxes.
In this age of green materials and concerns about the environment, corrugated cardboard offers a major advantage in that it's completely recyclable. Made out of paper (which may also be recycled) corrugated card can be made even more ecologically friendly if it's made without any bleaches or dyes so that the colour remains natural. Of course, corrugated card can be used again and again because it can be remade time and again, and from a variety of different kinds of paper pulp.
Corrugated card is also quite strong. This strength comes from the arch that's in the middle of the layers of corrugated card. There are three layers of paper, and the middle layer looks a lot like a sine wave. This arched shape, which is so often used in other types of construction like bridges or doorways, lends a great deal of support to corrugated card. This means that it can hold a great deal more than it would be able to if it was made of just three, flat layers.
Corrugated card can be easily joined with a variety of different adhesives and fasteners. Staples are difficult to put through corrugated card (unless they're industrial staples), but glue can easily bind corrugated card together. Additionally, corrugated card can be cut fairly easily, even if it stands up to pressure well from all six principle directions. The ease with which corrugated card can be bound together is a major advantage because it means that a variety of shapes and structures can be made out of this simple material.