Abstract: A continuous blank for forming a folded object is made from a multi-layered board material including a corrugated layer defining a flute direction (F); the blank including two blank portions joined to each other by a straight fold line extending along the flute direction (F) and having two opposed fold line end points, the multi-layered board material being weakened along the fold line. A contour of the blank includes two recessed contour portions, each recessed contour portion including one of the end points and extending on both sides of the fold line.

Abstract: A method for producing a modified lignocellulosic pulp having improved wet-strength properties and a modified lignocellulosic pulp obtainable by the method.

Abstract: The present disclosure relates to a method of producing hydrophobic paper, using a sizing additive based on depolymerized lignin and a hydrophobic paper obtainable by such method.

Abstract: A method for producing a modified lignocellulosic pulp having improved wet-strength properties and a modified lignocellulosic pulp obtainable by the method.

Abstract: A method of preparing a sizing boost additive, includes: I) combining a lignin oil and an aqueous solution of gelatinized cationic polysaccharide to obtain a lignin/polysaccharide blend, wherein the lignin oil is obtained by base catalyzed depolymerization of lignin; and the gelatinized cationic polysaccharide is prepared by cooking dry cationic polysaccharide in water until completely gelatinized; and wherein a weight ratio of lignin oil:polysaccharide in the blend is 1:0.5-2, where the weight of the polysaccharide is the weight of dry polysaccharide added in preparation of the aqueous solution of gelatinized cationic polysaccharide; and the combined weight of lignin and polysaccharide is 1-10 wt-% based on the total weight of the resulting blend; followed by II) mixing the lignin/polysaccharide blend at a temperature of 40-100° C., until the blend has changed color from grey-white to brown.

Abstract: The present disclosure relates to a method of producing hydrophobic paper, using a sizing additive based on depolymerized lignin and a hydrophobic paper obtainable by such method.

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 method of preparing a sizing boost additive, includes: I) combining a lignin oil and an aqueous solution of gelatinized cationic polysaccharide to obtain a lignin/polysaccharide blend, wherein the lignin oil is obtained by base catalyzed depolymerization of lignin; and the gelatinized cationic polysaccharide is prepared by cooking dry cationic polysaccharide in water until completely gelatinized; and wherein a weight ratio of lignin oil:polysaccharide in the blend is 1:0.5-2, where the weight of the polysaccharide is the weight of dry polysaccharide added in preparation of the aqueous solution of gelatinized cationic polysaccharide; and the combined weight of lignin and polysaccharide is 1-10 wt-% based on the total weight of the resulting blend; followed by II) mixing the lignin/polysaccharide blend at a temperature of 40-100° C., until the blend has changed color from grey-white to brown.

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: An intermediate laminate product includes a first paper layer including lignocellulose fibers, and a dry coating layer applied to one surface of the first paper layer, the coating including expandable microspheres having an expansion temperature (TE), at least one polysaccharide, and a plasticizing additive which is capable of forming a thermoplastic blend with the polysaccharide. An expanded laminate structure includes the intermediate laminate product and a second paper layer comprising lignocellulose fibers, which is attached to the dry coating by heat lamination. A liquid packaging board includes the expanded laminate structure and a liquid barrier layer.

Abstract: An intermediate laminate product includes a first paper layer including lignocellulose fibres, and a dry coating layer applied to one surface of the first paper layer, the coating including expandable microspheres having an expansion temperature (TE), at least one polysaccharide, and a plasticizing additive which is capable of forming a thermoplastic blend with the polysaccharide. An expanded laminate structure includes the intermediate laminate product and a second paper layer comprising lignocellulose fibres, which is attached to the dry coating by heat lamination. A liquid packaging board includes the expanded laminate structure and a liquid barrier 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 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.

Abstract: An improved method and arrangement for increasing the yield in the production of edge glued laminations for the manufacture of edge glued laminated panels from thin timber. The edge glued laminations are manufactured from planed boards with residual waney edge by longitudinal sawing on an edging line including an upper and lower inlet feed conveyor, and edging machine and an upper and lower outlet feed conveyor, the edging machine preferably including a number of saw blades which are laterally adjustable, and the feed conveyors including endless belts of reinforced rubber 5-10 mm thick, having an underside provided with longitudinal channels with a width of 2-10 mm and a depth of 2-10 mm, the feed conveyors running on a number of tracked rollers adapted to the belts. An edge glued laminated panel based on varying lamination widths manufactured according to the method is also described.