Abstract: A multilayer corrugated board which can be smoothly bent from a planar state to a curved state without failure even at small radii of curvature, as well as a container made from such board. The materials and mechanical properties of the layers of the board are selected such that each layer inward of the outermost layer in the bent state buckles simultaneously and reversibly between each flute of the adjacent innermost corrugated layer.

Abstract: A multilayer corrugated board which can be smoothly bent from a planar state to a curved state without failure even at small radii of curvature, as well as a container made from such board. The materials and mechanical properties of the layers of the board are selected such that each layer inward of the outermost layer in the bent state buckles simultaneously and reversibly between each flute of the adjacent innermost corrugated layer.

Abstract: A packaging box including a base portion defining a first plane is disclosed. The packaging box includes at least one first side wall portion. The at least one first side wall portion is arranged at an angle to the base portion. The first side wall portion is joined to the base portion via a fold line at a first edge of the base portion. The first side wall portion has an extension portion extending from one side of the side wall portion so as to provide at least part of a second side wall portion arranged at an angle to the base portion and at an angle to the first side wall portion. The second side wall portion includes at least part of the extension portion. A connecting portion of the extension portion connecting the first side wall portion to the second side wall portion is smoothly curved.

Abstract: A packaging box including a base portion defining a first plane is disclosed. The packaging box includes at least one first side wall portion. The at least one first side wall portion is arranged at an angle to the base portion. The first side wall portion is joined to the base portion via a fold line at a first edge of the base portion. The first side wall portion has an extension portion extending from one side of the side wall portion so as to provide at least part of a second side wall portion arranged at an angle to the base portion and at an angle to the first side wall portion. The second side wall portion includes at least part of the extension portion. A connecting portion of the extension portion connecting the first side wall portion to the second side wall portion is smoothly curved.

Abstract: A packaging box is disclosed, able to have smoothly curved wall portions. The box includes a perimeter wall defining a void thereby. The perimeter wall includes a first fold line and a second fold line. The first fold line and the second fold line may be parallel. A distance around the perimeter wall from the first fold line to the second fold line measured in a first plane perpendicular to the first and second fold lines in a first rotational sense is the same as a distance around the perimeter wall from the first fold line to the second fold line in the first plane in a second rotational sense opposite to the first rotational sense. When the first fold line is fully unfolded, the perimeter has a continuous surface including the first fold line. A tube, blank, method and machine for forming the box are also disclosed.

Abstract: A smoothly bendable board including a middle layer, a first outer layer attached to the middle layer and a second outer layer attached to the middle layer is disclosed. The second outer layer has a lower bending stiffness according to ISO 5628 than the first outer layer such that the smoothly bendable board is outwardly bendable only in a direction towards which the second layer faces. A method for producing a smoothly bendable board is also disclosed.

Abstract: A packaging construction being formed by multi-layer board material includes a middle layer, a first outer layer attached to the middle layer and a second outer layer attached to the middle layer. The packaging construction defines a bottom side, a top side, and a plurality of side panels joining the bottom side and the top side so as to form a closed structure. At least one edge is defined between adjacent side panels. The packaging construction is arranged so that the second outer layer has a lower bending stiffness according to ISO 5628 than the first outer layer such that the board is outwardly bendable only in a direction towards which the second layer faces, and in that the packaging construction is formed with at least one side panel being curved and/or at least one edge being rounded.

Abstract: A packaging construction being formed by multi-layer board material includes a middle layer, a first outer layer attached to the middle layer and a second outer layer attached to the middle layer. The packaging construction defines a bottom side, a top side, and a plurality of side panels joining the bottom side and the top side so as to form a closed structure. At least one edge is defined between adjacent side panels. The packaging construction is arranged so that the second outer layer has a lower bending stiffness according to ISO 5628 than the first outer layer such that the board is outwardly bendable only in a direction towards which the second layer faces, and in that the packaging construction is formed with at least one side panel being curved and/or at least one edge being rounded.

Abstract: A smoothly bendable board including a middle layer, a first outer layer attached to the middle layer and a second outer layer attached to the middle layer is disclosed. The second outer layer has a lower bending stiffness according to ISO 5628 than the first outer layer such that the smoothly bendable board is outwardly bendable only in a direction towards which the second layer faces. A method for producing a smoothly bendable board is also disclosed.