Abstract: A method of manufacturing a film having an oxygen transmission rate (OTR) value in the range of 0.1 to 200 cc/m2*24 h at 23° C., 50% relative humidity (RH), and an OTR value in the range of 0.1 to 2000 cc/m2*24 h at 38° C. at 85% RH, comprising at least 60% by weight nanocellulose based on the weight of the total amount of fibers in the film, wherein the method comprises the steps of, providing an aqueous suspension comprising said nanocellulose; forming a web from said aqueous suspension; calendering said web at a line load of at least 40 kN/m, and at a temperature of at least 60° C. wherein said film is formed and said web has an OTR value in the range of 50 to 10 000 cc/m2*24 h at 23° C., 50% RH before said calendering step, or more preferably in the range of 500 to 5000 cc/m2*24 h at 23° C., 50% RH before said calendering step.

Abstract: A method of identifying a defect in a wet film comprises conveying said wet film (20), in a wet state, on a conveyor (10), providing a laser projection (1511) onto the wet film, acquiring a series of images, each depicting an area of the wet film, wherein at least a portion of the laser projection is visible, and using at least some of said images to identify said defect. There is also disclosed a method and device for producing a film.

Abstract: The invention relates to a method and an apparatus for deep-drawing a tray (1) from fiber-based sheet material (2), such as polymer coated board. The apparatus comprises a female moulding tool (3), which comprises a cavity (7) for forming the tray bottom outwardly, a male moulding tool (4), which comprises a plunger plate (11) for forming the tray bottom inwardly, the plunger plate being movable with respect to the cavity for forming the tray, and clamps (6, 15) with an interface for holding the sheet material and forming a tray rim flange. According to the invention by laterally distancing at least one of the moulding tools (3, 4) from the sheet material leeway is provided for free forming of the tray side walls while wrinkling or tearing of the same is avoided. Spacer plates (13) may be positioned behind the plunger plate (11), to adjust its position in relation to the cavity (7) of the female moulding tool (3).

Abstract: The present document discloses a method of determining thickness of a wet film, in particular of microfibrillated cellulose. The method comprises conveying said film (20) in a wet state on a conveyor (10) having a conveyor width, the wet film having a film width which is less than the conveyor width, providing a laser projection (1511) across a film edge, acquiring a series of images, each depicting an area of the conveyor, wherein the laser projection, a portion of the film and a portion of an exposed conveyor surface are visible, and using at least some of said images to determine at least one of a film thickness and a film thickness distribution across the film width. The document also discloses a method of forming a film, in particular a microfibrillated cellulose film, and a device for producing such film.

Abstract: A method for making a cellulose film comprising microfibrillated cellulose (MFC) is provided, said method comprising the step of: applying an aqueous emulsion of one or more vegetable oils to a surface of a casting substrate. Improved release of the MFC film can thus be achieved.

Abstract: A method is provided for coating a fibrous web, in particular a fibrous web comprising nanocellulose fibres. The method includes steps of applying a coating agent to a textured surface region of a textured substrate, applying a fibre furnish or a wet fibrous web onto the coated textured surface region of the textured substrate, optionally dewatering to provide a wet fibrous web, and drying said wet fibrous web such that at least a portion of said coating agent is transferred to said fibrous web. The method provides a coated fibrous web with improved barrier properties.

Abstract: The present invention relates to a process for preparing a bonding resin, wherein lignin is provided in the form of a solution in ammonia and/or an organic base and mixed with one or more crosslinkers and optionally one or more additives. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards. The bonding resin is also useful for example in composites, molding compounds and foundry applications.

Abstract: The present invention relates to a method of deoxygenating tall oil pitch, yielding aliphatic and aromatic hydrocarbons. The invention even comprises turning the aliphates into polymerizable olefins by steam cracking, and turning the aromates into polymerizable terephthalic acid by oxygenation and, as necessary, rearrangement. The monomers can be used for the production of polymers of partially or completely biologic origin. According to the invention, tall oil pitch is first heated to turn it into liquid, which is then fed into a catalyst bed and catalytically deoxygenated with hydrogen. The deoxygenation catalyst is preferably a Ni—Mo catalyst and, in addition, a cracking catalyst can be used, such as an acidic zeolite catalyst. The deoxygenated product stream is cooled down so as to obtain a liquid, which is distilled for separation of the aliphatic and aromatic hydrocarbons for use in the production of the respective monomers and finally polymers.

Abstract: A barrier material comprising (a) at least one layer of cellulosic substrate comprising MFC, and (b) a first barrier layer arranged on at least one surface of said cellulosic substrate, is provided, as well as a method for reducing the water vapour transmission rate (WVTR) of a cellulosic substrate.

Abstract: A method of forming a film comprising nanocellulose having an Oxygen Transmission Rate (OTR) value in the range of 0.1 to 300 cc/m2/24 h at 38° C. and 85% relative humidity (RH), and having a basis weight in the range of in the range of 0.1 to 45 g/m2 wherein the method comprises the steps of; providing a suspension comprising nanocellulose, forming at least one layer of a web or a film from said suspension; drying said formed web or film to a dry content of at least 65 weight-%, wherein said method further comprises the steps of; treating at least one side of said dewatered and dried web or film with ultra violet (UV) or electron beam (EB) irradiation; and wherein at least one cooling step is provided in connection with or after the UV or EB treatment step.

Abstract: The disclosure relates to a blank (1) configured to be erected into a package (2), the blank (1) comprising a bottom panel (10), a first and a second side wall panel (21, 22), a first and a second end wall panel (31, 32), a first set and a second set of a first and a second end top wall panel (61, 62) configured to form a double walled top wall at each longitudinal end of the package (2), a third and a fourth locking tongue (73, 74) extending outwardly from the second side wall panel (22) and being configured to be received between the first and second end top wall panels (61, 62), a lid panel (80) being foldably connected to and extending outwardly from the second side wall panel (22), wherein the lid panel (80) is connected to the second side wall panel (22) along a longitudinal central portion positioned between the longitudinal end portions (22a, 22b) of the second side wall panel (22), as seen in a flat-laid state of the blank (1), The disclosure also relates to a package (2).

Abstract: A method for reducing the surface oil absorption of cellulose based substrate is provided, in which a coating composition is applied to said substrate; and in which the coating composition comprises carboxymethyl cellulose (CMC) and/or a salt of carboxymethyl cellulose (CMC). A coated paperboard, and a laminate of the coated paperboard with a polymer layer is also provided. The coating composition provides improved surface oil absorption and improved adherence of an overlying polymer layer.

Abstract: A cellulosic film comprising MFC is provided, which is coated on at least one surface thereof with at least one cured barrier layer. The cured barrier layer comprises CMC which has been crosslinked with a crosslinking agent. A method for improving the barrier properties of a cellulosic film is also provided.

Abstract: A method for producing a paperboard comprising the steps of; providing a furnish comprising cellulosic fibers, applying the furnish on at least one wire to form a web, dewatering the web on said at least one wire by subjecting the web to a pressure above 150 kPa without the use of a press roll nip and thereafter pressing the dewatered web to form a paperboard. Also a paperboard and a corrugated board produced by such a process.

Abstract: The present invention relates to a method for the production of a coated paper, paperboard or film, wherein the method comprises the steps of; providing a first suspension comprising cellulose fibers, applying the first suspension on a substrate to form a fibrous web, wherein the web has a first and a second side, providing a second suspension comprising micro fibrillated cellulose, applying the second suspension either to the first side of the fibrous web or to a surface of a drying equipment and conducting said fibrous web through the drying equipment whereby the second suspension is added to the first side of the web forming the coated paper, paperboard or film. The invention also relates to a paper, paperboard or film produced according to the method.

Abstract: The present invention relates to a process for preparing a modified wood product wherein the wood is treated with low-molecular weight resin based on lignin degradation products. The present invention also relates to a modified wood product produced using said process.

Abstract: The present invention relates to a refined cellulose fiber composition useful as a strength enhancing agent for paper and paperboard, wherein the refined cellulose fiber composition has a Schopper-Riegler (SR) number in the range of 80-98 as determined by standard ISO 5267-1, and wherein the refined cellulose fiber composition has a content of fibers having a length >0.2 mm of at least 12 million fibers per gram based on dry weight. The invention further relates to a method for preparing the refined cellulose fiber composition and to pulp paper and paperboard comprising the refined cellulose fiber composition.

Abstract: The present invention discloses a paperboard for packaging of liquid and frozen food, comprising a dispersion coating as the only barrier layer on its outside/print side. It has surprisingly been found that a dispersion coating comprising latex and pigment applied on the outside/print side of a paperboard for liquid and/or frozen food may serve as the only barrier against moisture arising from condensation.

Abstract: The present invention relates to a gas barrier film for a paper or paperboard based packaging material, said gas barrier film comprising: a microfibrillated cellulose layer (MFC layer), at least one surface of which has been metallized; and a polymer dispersion coating layer disposed on at least one surface of the MFC layer. The present invention further relates to a paper or paperboard based packaging material, containers and carton blanks comprising the gas barrier film, and to a method for manufacturing the gas barrier film.

Abstract: The present invention is directed to a film or coating comprising a fiber material, wherein at least 60% by weight of said fiber material is microfibrillated cellulose, said film or coating also comprising at least 1% by weight of extractives from wood bark or cork wood. The invention is also directed to products, such as packaging materials, using or incorporating said film or coating. Such packaging materials are for example laminates or multi-layer structures. The films or coatings according to the present invention having advantageous barrier properties and are therefore particularly suitable for sensitive objects that need to be packaged in a controlled or modified atmosphere. The present invention is also directed to a composition comprising a fiber material, wherein at least 60% by weight of said fiber material is microfibrillated cellulose, said composition also comprising at least 1% by weight of extractives from wood bark or cork wood.