| Double wall boxes are made out of two facings, two corrugated mediums and an inner liner inbetween to give five papers in total. The most common type is BC, which consist of one B-flute and one C-flute. These types of corrugated cardboard are used for heavy applications, particularly in packaging for export shipments. The density of double wall corrugated varies between 650 and 1800 gr/m2. |