Other contributors have said "How does cardboard corrugation work?" is the same question as "Why is corrugated cardboard used for packaging?" If you believe that these are not asking the same thing and should be answered differently, click here
Cardboard is used for packaging because it is recyclable, affordable & easy to get hold of. Also, it is handy for stacking products to prevent damage to products.
Well as Quirkyquantummechanic said, Active Packaging is a type of passaging that can control or react to things going on inside the packaging. For instance, some types of active packaging will...