What Is Corrugated Cardboard? A Complete Guide to the World’s Most Popular Packaging Material
Corrugated cardboard, or corrugated fibreboard, consists of two liners bonded to a fluted medium that provides rigidity and cushioning. It is produced on automated corrugator lines using kraft liners, recycled fibre mediums, and starch-based adhesive. Board strength depends on flute type, wall count, adhesive quality, and moisture control, verified through ECT and BCT testing. Types range from single-face to triple-wall for varying loads. Typically containing up to 80% recycled fibre, corrugated board remains recyclable, biodegradable, and central to sustainable packaging.