Korrugerad

Korrugerad is the Swedish term for corrugated, used to describe a surface or material that features a regular pattern of ridges and grooves. The word is applied to a range of materials that are formed into a wave-like cross-section to increase stiffness and strength without a substantial rise in weight.

Commonly, korrugerad refers to corrugated metal sheets and corrugated cardboard. Corrugated metal sheets have parallel ridges that run along the sheet and provide added bending stiffness, making them suitable for roofing, siding, and interior decking. Corrugated cardboard consists of a fluted inner layer sandwiched between outer liners, creating a lightweight yet strong packaging material with good cushioning properties.

The key advantage of corrugation is increased rigidity and load-bearing capacity relative to the material’s thickness. In cardboard, the corrugated layer distributes compressive and impact forces, while the outer liners provide surface stability. In metal, the wavy profile helps resist bending and distributes stresses over a larger area.

Manufacturing methods differ by material. Metal corrugation is typically produced by rolling or pressing the sheet to form the wave profile. Cardboard corrugation involves forming a flute medium and bonding it to liner sheets with adhesive, creating a three-layer structure.

Applications are diverse. Packaging commonly relies on corrugated cardboard boxes for protection and economy. In construction, korrugerad metal sheets are used for roofs and wall cladding, offering durability, weather resistance, and quick installation.

In Swedish usage, korrugerad corresponds to the English term “corrugated” and describes both aesthetic and structural properties of such profiles.