The present invention relates to an adhesive composition comprising, among others, (i) microfibrillated cellulose and (ii) a metal in oxidation state of II or greater. The present invention further relates to uses of such an adhesive composition and to products prepared with such an adhesive composition. Furthermore, the present invention relates to a process for making corrugated paperboards or cardboards, or solid paperboards or cardboards by using such an adhesive composition.

The present invention relates to a system for the compact packaging of microfibrillated cellulose, which comprises a packaging, which comprises at least one polymer material. Said packaging encompasses a content that essentially consists of microfibrillated cellulose (“MFC”) that is present as a suspension in a solvent. The resulting system is of an essentially round or essentially rectangular or oval outer circumference, as defined by the dimensions of the packaging once fully filled out by the content. The system of the invention has the advantage, among others, to provide a solid and firm essentially round packaging shape. The resulting units of packaged MFC can be easily stacked on a pallet. The packaging maintains the water retention capacity of the suspension (paste). The present invention also relates to a process for making such a system.

The present invention relates to a system for the compact packaging of microfibrillated cellulose, which comprises a packaging, which comprises at least one polymer material. Said packaging encompasses a content that essentially consists of microfibrillated cellulose (“MFC”) that is present as a suspension in a solvent. The resulting system is of an essentially round or essentially rectangular or oval outer circumference, as defined by the dimensions of the packaging once fully filled out by the content. The system of the invention has the advantage, among others, to provide a solid and firm essentially round packaging shape. The resulting units of packaged MFC can be easily stacked on a pallet. The packaging maintains the water retention capacity of the suspension (paste). The present invention also relates to a process for making such a system.

A method of dosing a nanocellulose suspension in gel phase into a second suspension, wherein the method comprises the steps of: providing said nanocellulose suspension in gel phase; providing said second suspension; bringing said nanocellulose suspension in gel phase in contact with said second suspension; wherein the method comprises a step of subjecting said nanocellulose suspension in gel phase to a shear rate of more than 500 l/s, simultaneously with and/or immediately prior to the step of bringing said nanocellulose suspension in gel phase and said second suspension in contact with each other.

A method of dosing a nanocellulose suspension in gel phase into a second suspension, wherein the method comprises the steps of: providing said nanocellulose suspension in gel phase; providing said second suspension; bringing said nanocellulose suspension in gel phase in contact with said second suspension; wherein the method comprises a step of subjecting said nanocellulose suspension in gel phase to a shear rate of more than 500 l/s, simultaneously with and/or immediately prior to the step of bringing said nanocellulose suspension in gel phase and said second suspension in contact with each other.

It is an object of the present invention to provide ultrafine cellulose fibers capable of exhibiting favorable dispersibility even in an organic solvent. The present invention relates to cellulose fibers having a fiber width of 1000 nm or less and having phosphoric acid groups or phosphoric acid group-derived substituents, wherein the content of the phosphoric acid groups or phosphoric acid group-derived substituents is 0.5 mmol/g or more, and the supernatant yield measured by an measurement method (a) is 70% or less.

A process for producing an oxidized nanofibrillar cellulose hydrogel is disclosed, wherein the process comprises oxidizing cellulose pulp fibers in the presence of hypochlorite as an oxidant and a heterocyclic nitroxyl radical as a catalyst; and disintegrating the oxidized cellulose pulp fibers to obtain a nanofibrillar cellulose hydrogel; wherein all steps of the process after oxidizing are performed under aseptic conditions. An oxidized nanofibrillar cellulose hydrogel and a system for producing the same are also disclosed.

A process for producing an oxidized nanofibrillar cellulose hydrogel is disclosed, wherein the process comprises oxidizing cellulose pulp fibers in the presence of hypochlorite as an oxidant and a heterocyclic nitroxyl radical as a catalyst; and disintegrating the oxidized cellulose pulp fibers to obtain a nanofibrillar cellulose hydrogel; wherein all steps of the process after oxidizing are performed under aseptic conditions. An oxidized nanofibrillar cellulose hydrogel and a system for producing the same are also disclosed.

A method of manufacturing a film having an oxygen transmission rate (OTR) value in the range of 0.1 to 200 cc/m.sup.2*24 h at 23° C., 50% relative humidity (RH), and an OTR value in the range of 0.1 to 2000 cc/m.sup.2*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/m.sup.2*24 h at 23° C., 50% RH before said calendering step, or more preferably in the range of 500 to 5000 cc/m.sup.2*24 h at 23° C., 50% RH before said calendering step.

A method of manufacturing a film having an oxygen transmission rate (OTR) value in the range of 0.1 to 200 cc/m.sup.2*24 h at 23° C., 50% relative humidity (RH), and an OTR value in the range of 0.1 to 2000 cc/m.sup.2*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/m.sup.2*24 h at 23° C., 50% RH before said calendering step, or more preferably in the range of 500 to 5000 cc/m.sup.2*24 h at 23° C., 50% RH before said calendering step.