Corrugated board for humid conditions
AssigneeBillerud Aktiebolag (publ)
InventorMagnus Bjorklund
Life of this patent
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Abstract
There is provided a container having at least one wall composed of a corrugated board comprising an inner linerboard, an outer linerboard and a fluting arranged between the inner linerboard and the outer linerboard, characterized in that the hygroexpansivity in the CD of the inner linerboard is higher than the hygroexpansivity in the CD of the outer linerboard, wherein hygroexpansivity is measured according to ISO 8226-2:1990.
Claims17
A container having at least one wall composed of a corrugated board comprising an inner linerboard, an outer linerboard and a fluting arranged between the inner linerboard and the outer linerboard, characterized in that the hygroexpansivity in the cross direction (CD) of the inner linerboard is higher than the hygroexpansivity in the cross direction (CD) of the outer linerboard, wherein hygroexpansivity is measured according to ISO 8226-2:1990.
A corrugated board comprising a first linerboard, a second linerboard and a fluting arranged between the first and the second linerboard, wherein the first linerboard is unbleached and the second linerboard is a white top linerboard or a pigment-coated linerboard, whererin the hygroexpansivity in the cross direction (CD) of the first linerboard is higher than the hygroexpansivity in the cross direction (CD) of the second linerboard, wherein hygroexpansivity is measured according to ISO 8226-2:1990.
A corrugated board comprising a first linerboard, a second linerboard and a fluting arranged between the first and the second linerboard, wherein the grammage of the first linerboard is lower than the grammage of the second linerboard and in that the hygroexpansivity in the cross direction (CD) of the first linerboard is higher than the hygroexpansivity in the cross direction (CD) of the second linerboard, and wherein hygroexpansivity is measured according to ISO 8226-2:1990.
Dependencies are inferred from the claim text.