Swedish company develops new high-strength cardboard

A Swedish company has developed a new type of high-strength paperboard that can be used to make boxes that are strong, strong, and resistant to collisions and that can effectively protect the contents inside. This new type of paperboard is embedded with plastic pellets, which are made in this way: First, a large number of aerated plastic pellets with a diameter of 0.01 mm are incorporated into the pulp and then processed into cardboard. As the gas inside the plastic pellets expands during the processing of the cardboard, its diameter is correspondingly expanded to 0.05 mm. At the same time, the cardboard is naturally squeezed by the expansion of the plastic pellets, and its texture becomes stronger, so it has a high strength.