Corrugated cardboard is composed of three layers: an outer linerboard and an inner corrugated medium, which are glued together. The corrugated medium is classified according to its thickness and can be categorized as A-flute, B-flute, C-flute, E-flute, F-flute, and other specifications. A-flute has the thickest corrugated medium while F-flute has the thinnest. Different types of corrugated cardboard are suitable for different packaging requirements.
The outer linerboard can be classified by its material and includes white kraftliner, brown kraftliner, high-strength linerboard, and other types. Corrugated cardboard can also be classified based on surface treatment, such as waxed or unwaxed.
Furthermore, corrugated cardboard can be classified according to its specific use, such as regular corrugated cardboard, moisture-resistant corrugated cardboard, anti-static corrugated cardboard, fire-resistant corrugated cardboard, and more. Different types of corrugated cardboard can meet different packaging requirements.
