As per the expectation of consumers, The product has to arrive in perfect condition, in all ways. Corrugated packaging combines structural rigidity with cushioning qualities to protect contents from damage, within. One of the reasons it protects the product so well, is found in its basic construction, with a middle layer of fluting to absorb impact.
Architects have known for thousands of years that a curved arch is the strongest way to span a given space. The curve of arch and its ability to dissipate the force outward greatly reduces the effect of tension on the underside of the arch. The inventors of corrugated board applied the same principle to paper when they put arches in the corrugated medium. These arches are known as flutes, and they enable corrugated to resist bending and pressure from all directions.