It is formed by the placement of a corrugated sheet between two liner sheets, one-layer corrugated board.
Double Wave
It is a two-layered corrugated board composed of liner paper covering the bottom and top surfaces of two corrugated sheets by combining them with a flat paper.
Corrugated (Single Side)
It is formed by combining two sheets of paper with the gluing of one groove layer on one plain paper. It is also used as wrapping and packaging material.