Abstract:
The present invention provides for method for spinning a reinforced cellulosic fibre or filament, comprising the steps of a. at a first point in time, forming a composite spinning solution comprising a first reinforcing particle, a cellulosic base material and a process solvent, and b. at a second point in time, extruding the spinning solution through an orifice into a regeneration fluid such as to form the reinforced cellulosic fibre or filament, wherein the composite spinning solution is formed by dissolving the cellulosic base material in the process solvent and distributively dispersing the first reinforcing particle in the process solvent.
Abstract:
The present invention is directed towards a method for spinning neutral or anionically modified cellulose comprising the steps of: (a) preparing a suspension of the neutral or anionically modified cellulose in a continuous phase; (b) subjecting the suspension to high shear rate; (c) performing spinning by extruding the cellulose suspension into an airgap region comprising at least one heated zone to obtain spun fibres, (d) subjecting the spun fibres to at least one washing stages and (e) isolating the spun fibres from the at least one washing stages; as well as fibres obtained based on the method of the invention and paper or board products derived from such fibres.
Abstract:
The present invention relates to a coated paper which is at the same time suitable for dry toner laser printing as well as for liquid toner digital printing, in particular for digital Indigo printing. The coated paper according to the invention comprises at least one top coating consisting of 100 parts in dry weight of a pigment part, 3-10 parts in dry weight of a binder part, 0.3-5, preferably 1-5 parts in dry weight of an electroconductivity agent, 0-1 part in dry weight of further additives, wherein the electroconductivity agent is a salt of a metallic cation with a polymeric anion.
Abstract:
A method for the spinning of a fibre comprising cellulose nano-fibrils being aligned along the main axis of the fibre from a lyotropic suspension of cellulose nano-fibrils, said nano-fibril alignment being achieved through extension of the extruded fibre from a die, spinneret or needle, wherein said fibre is dried under extension and the aligned nano-fibrils aggregate to form a continuous structure and wherein the suspension of nano-fibrils, which has a concentration of solids of at least 7% wt, is homogenised using at least a mechanical, distributive mixing process prior to its extrusion. The fibrils used in this method can be extracted from a cellulose-rich material such as wood. The invention also related to a cellulose-based fibre obtained according to this method and to a cellulose fibre which contains at least 90% wt of crystallised cellulose.
Abstract:
The invention relates to a coated printable cellulosic substrate (5) with at least one pigmented and/or functional ink-receiving coating layer (3), characterised in that at least one coating layer (2) comprises RFID-chips (6) therein.
Abstract:
A coated paper for offset printing comprising at least on one side a top coating layer, is described, said top coating layer comprising a pigment part, the 100 parts in dry weight thereof consisting of a) in the range of 50 -100 parts in dry weight of a fine particulate pigment with a particle size distribution such that at least 50% of the particles have a size of below or equal to 1 μm and/or that at least 80% of the particles have a size of below or equal to 2 μm, b) in the range of 0 - 50 parts in dry weight of a fine particulate pigment with a particle size distribution such that at least 50% of the particles have a size of below or equal to 3 μm and/or that at least 40% of the particles have a size of below or equal to 2 μm, as well as c) in the range of 0 - 50 parts in dry weight of a further fine particulate pigment, the parts a), b) and c) supplementing to 100 parts in dry weight a binder part with in the range of 2 - 20 parts in dry weight of binder, an additive part with in the range of 0 - 8 parts in dry weight of additive(s), wherein the binder part comprises a synthetic auto-oxidative resinous binder or at least partly (modified) natural resinous binder with auto-oxidative drying functionality as well as optionally at least one further non-resinous binder.
Abstract:
Coated paper for offset printing comprising at least on one side a top coating layer with improved ink scuff behaviour, said top coating layer comprising a pigment part, the 100 parts in dry weight thereof comprising in the range of 2 - 40 parts in dry weight of a fine particulate, preferably organosilane surface-treated Phyllosilicate pigment like (as pure as possible) Talcum, a binder part of 2 - 20 parts in dry weight of binder and optionally additives in the range of 0 - 8 parts in dry weight.
Abstract:
The present invention provides a method for the production of chemically derivatized nanocellulose, comprising the step of a. contacting a precursor cellulosic material with a chemically derivatizing composition to form a liquid reaction mixture, and b. chemically reacting the formed liquid reaction mixture, and c. subjecting the formed liquid reaction mixture to microfluidisation, wherein the steps b. and c. are carried out simultaneously.
Abstract:
A process for reducing the overall energy consumption in the production of nanocellulose dispersions from a base cellulosic material wherein said process comprises an intermediate step reducing the overall energy consumption by at least 50% when compared to a process lacking said intermediate step.