Corrugation is the process by which structural ridges can be introduced to a material. The advantages of corrugated material over sheet material include dramatically increased tensile and load-bearing strength. Different edge profiles can be applied to achieve different aesthetic and performance attributes. Many different types of materials can be corrugated including plastic, composites, metal, paper, and glass. Depending on the type of material, the corrugation will either be created through cold rolling, or a combination of heat and pressure.