Lightweight high-strength corrugated board and preparation process thereof

The invention relates to the technical field of corrugated boards, in particular to a lightweight high-strength corrugated board and a preparation process thereof. Comprising the following steps that 1, waste paper is made into long-fiber paper pulp and short-fiber paper pulp; 2, preparing light-weight corrugating base paper, and carrying out corrugation pressing to obtain core paper; 3, preparing surface paper and bottom paper; 4, preparing an anionic starch glue solution and a cationic starch glue solution; 5, the surface of the core paper is sequentially coated with the anionic glue solution and the cationic glue solution, and sizing core paper is obtained; and coating the surfaces of the bottom paper and the surface paper with the anionic glue solution, compounding the bottom paper and the surface paper on the upper surface and the lower surface of the sizing core paper, drying and ventilating to obtain the high-strength corrugated board. The method has the beneficial effects that the paper pulp is prepar