Corrugated cardboard is made by bonding face paper, lining paper, core paper and corrugated paper processed into corrugated corrugated paper. According to the needs of commodity packaging, corrugated cardboard can be processed into single-sided corrugated cardboard, three-layer corrugated cardboard, five-layer, seven-layer, and eleven-layer corrugated cardboard. Different corrugated shapes of corrugated corrugated cardboard have different functions. Even if the same quality of face paper and lining paper are used, due to the difference in corrugated shape, the performance of the corrugated board formed will be different. There are four types of flute shapes commonly used in the world. They are Type A, Type C, Type B and Type E. Their technical indicators and requirements are shown in Table 1. The corrugated board made of A-type flute has better cushioning properties and is full of certain elasticity, and the C-type flute is next to the A-type flute. But the stiffness and impact resistance are better than A-shaped flute; B-shaped flute has a large arrangement density, and the made corrugated board has a flat surface, high bearing pressure, suitable for printing; E-shaped flute is thin and dense, showing its rigidity. strength.
