Corrugated models Corrugated models are classified into A,B,C and E according to their height. The mechanical properties of different corrugated boards are also different. The plane pressure of Type A corrugated board has A higher compressive strength, while that of type B is the opposite. The plane pressure, vertical pressure, parallel pressure and buffer force of type C are all better. Corrugated board thickness, type A, C, B type again, E minimum, because of the small thickness of the cardboard processing bending easier, therefore, B type corrugated paper is widely used in low requirements on the compression strength of box packing box. According to the different mechanical properties of corrugated board, single-sided corrugated carton for good with A or C, double corrugated carton with A, B or B, C type combined advisable, close to the surface with type B, can have impact resistant effect. A,B or B, C combination, can improve the physical and mechanical properties of the carton; Compared with printing suitability, both Type B and Type C are good for printing.