Folding boxboard, also referred to as FBB or by the DIN Standard 19303 codes of GC or UC, is a paperboard grade made up of multiple layers of chemical and mechanical pulp.^[1] This grade is made up of mechanical pulp in between two layers of chemical pulp. The top layer is of bleached chemical pulp with an optional pigment coating.^[2] This is a low-density material with high stiffness and a slightly yellow colour, mainly on the inside. The major end uses of folding boxboard are health and beauty products, frozen, chilled and other foods, confectionaries, pharmaceuticals, graphical uses^[3] and cigarettes.^[4]