Norpapp工业公司发明Nor—Box,是一种将聚乙烯薄膜热封在瓦楞纸箱周围而成的防水瓦楞纸箱。最初的市场是渔业,用于替代发泡聚苯乙烯塑料箱(见图1)。但是Norpapp公司看到它在食品工业中的进一步应用。在食品工业中直到现在瓦楞纸箱仍受到潮湿的破坏。同时,这种箱子具有与发泡聚苯乙烯塑料箱相同的隔热性能。 Norpapp Industries invented Nor-Box, a waterproof corrugated cardboard box with a polyethylene film heat-sealed around a corrugated cardboard box. The original market was fisheries, used to replace foamed polystyrene plastic boxes (see Figure 1). But Norpapp sees its further use in the food industry. Corrugated boxes in the food industry are still damaging until now. At the same time, this box has the same thermal insulation properties as expanded polystyrene plastic boxes.