Corrugated fiberboard

Corrugated fiberboard is a type of cardboard that is made up of multiple layers of paper. The paper used to make corrugated fiberboard is thicker and stronger than the paper used to make regular cardboard.

The middle layer of corrugated fiberboard is called the corrugated medium. It looks like a bunch of wavy lines glued together. The wavy lines make the cardboard stronger because they give it more surface area, which helps it resist bending and crushing.

The other layers, called linerboard, are flat, smooth sheets of paper that are glued to both sides of the corrugated medium. These layers are what you see when you look at the outside of the cardboard box. They can be printed on, so that you can put words or pictures on the box.

Corrugated fiberboard is used to make boxes and packaging for all sorts of things, like shipping products to stores or moving your toys to a new house. It's perfect for this because it is strong but lightweight, so it doesn't add a lot of extra weight to the things that are inside.

Overall, corrugated fiberboard is like a superhero cardboard that is stronger, more protective, and can save the day!