The raw materials for making stone paper can be limestone such as coal gangue and tailings slag. After crushing, screening and grinding, ultra-fine modified mineral powder is formed. After calcining into quicklime with a calcium content of more than 57%, it is then ground into ultra-fine whitening stone powder. Adding 20% of specific PE, PP and other additives, after special processes such as casting and stretching, three-layer co-extrusion, etc., blow molding and molding, stone paper is formed.
The box made of stone paper has a plastic feel to the touch and is very tough. In the hand, it feels softer than fiber paper products, and it will not be torn if pulled hard.
The eco friendly stone carton box made of this kind of paper has particularly high compressive strength, folding resistance, waterproof and one-piece molding. The data shows that compared with ordinary corrugated cardboard, the high polymer calcium board synthesized by this stone has a maximum burst strength of 264KPa and double the edge compressive strength. Moreover, it will not be deformed or damaged in the environment of minus 40 degrees Celsius to plus 80 degrees Celsius, especially suitable for the transshipment packaging of fruits, vegetables, frozen seafood, etc.
