Paper buffer packaging materials mainly include corrugated cardboard, honeycomb cardboard, and pulp molding. These buffering packaging materials are primarily used to manufacture products such as cardboard boxes, trays, packaging inserts, etc., and can be applied in various fields such as household appliances, instruments, agricultural products, medical instruments, food, etc. Among all paper buffering packaging, corrugated cardboard has the highest consumption rate. The production process of corrugated cardboard involves the mechanical pulping of main raw materials such as straw fiber or waste paper fiber, followed by drying the pulped raw materials and making them into primary cardboard, similar to kraft paper. Then, using processing machinery, the primary cardboard is pressed, and finally, using adhesive substances such as sodium silicate material, the primary cardboard is bonded to box cardboard, making a buffering packaging material containing at least 1 layer of primary cardboard and 1 layer of box cardboard. Honeycomb cardboard is created based on corrugated cardboard, by gluing corrugated primary paper using adhesive. Thus, a sandwich structure with numerous hollow regular hexagons is formed. Facing paper is glued to the lateral surfaces of the honeycomb cardboard, resulting in a new environmentally friendly energy-saving material with a sandwich structure. Pulp molding is achieved using modeling methods such as vacuum, hydraulic, air compression, etc., where cardboard paper, waste newspapers, or other paper waste fibers are rapidly and evenly deposited onto models with mesh structures, after which the formed shapes are compacted and dried. Pulp molding can maintain its shape for a long time and exhibits excellent mechanical properties.
