Corrugated board is made of face paper, lining paper, core paper and corrugated paper processed into waveform corrugated by bonding. According to the demand of commodity packaging, corrugated board can be processed into single-sided corrugated board, three-layer corrugated board, five layer, seven layer and eleven layer corrugated board.

The functions of corrugated board bonded with different corrugated shapes are also different. Even if the same quality of face paper and lining paper are used, the performance of corrugated board is different due to the difference of corrugated shape. There are four types of corrugating shapes commonly used internationally, which are A-type corrugating, C-type corrugating, B-type corrugating and E-type corrugating. Their technical indicators and requirements are shown in Table 1. The corrugated board made of type a corrugated board has good cushioning and certain elasticity, followed by type C corrugated board compared with type a corrugated board. But the stiffness and impact resistance are better than those of A-type corrugated; B-type corrugated board has large arrangement density, flat surface and high bearing pressure, which is suitable for printing; Because the E-shaped ridge is thin and dense, it shows its stiffness and strength.