A sublimation transfer paper for sublimation transfer printing with water-based dye sublimation inks, comprising a fibrous substrate and at least one printable transfer layer, characterized in that the printable transfer layer comprises at least one polyurethane.
B41M 5/035 - Duplicating or marking methodsSheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of design
A printing paper comprising at least one ink receiving topcoat, wherein the ink receiving topcoat comprises a pigment composition and a binder composition, the binder composition comprising a mixture of at least one starch, and one or both of at least one protein and at least one water-soluble polymer, characterized in that the binder composition comprises the at least one protein in an amount of at least 5 weight percent, when present, and comprises the at least one water-soluble polymer in an amount of at least 2.5 weight percent, when present, based on the weight of the binder composition.
A translucent paper comprising a base paper layer, and optionally a coating layer adjacent to the base paper layer, wherein the base paper layer comprises a mixture of wood pulp fiber and microfibrillated cellulose, characterized in that the pulp fiber has a degree of Schopper-Riegler (SR) of more than or equal to 50 SR and that the microfibrillated cellulose is comprised in the mixture of pulp fiber and microfibrillated cellulose in an amount of 10 weight percent to about 50 weight percent, based on the weight of the mixture of pulp fiber and microfibrillated cellulose and wherein the mixture of pulp fiber and microfibrillated cellulose has a degree of Schopper-Riegler (SR) of between 65 SR and 95 SR, preferably of between 70 SR and 90 SR, as measured under ISO 5267-1.
The invention relates to an injection-molding composition comprising at least one polyolefin, at least one delignified wood pulp fiber, at least one maleic anhydride-grafted polyolefin and at least one metal oxide chosen from oxides of alkaline earth metals or of zinc.
C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material
C08F 255/02 - Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group on to polymers of olefins having two or three carbon atoms
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
A sublimation transfer paper for sublimation transfer printing with water-based dye sublimation inks, comprising a fibrous substrate and at least one printable transfer layer, characterized in that the printable transfer layer comprises at least one polyurethane.
B41M 5/035 - Duplicating or marking methodsSheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of design
A process for producing surface modified bleached chemical pulp fiber comprising fluidizing the bleached chemical pulp fiber and contacting the fluidized bleached chemical pulp fiber with an aerosol of a surface modifying composition comprising a surface modifying compound
A process for improving the barrier properties of a barrier layer in a pulp-based substrate layer having a barrier layer, comprising the steps of providing a pulp-based substrate layer having a layer of an aqueous barrier composition applied to it, and then drying the pulp- based substrate layer having a layer of aqueous barrier composition applied to it to form a pulp-based substrate layer having a barrier layer, such that the moisture content of the pulp- based substrate layer having a barrier layer is below 2.5 % by weight, preferably below 2 % by weight, based on the weight of the pulp-based substrate layer having a barrier layer.
The invention relates to an injection-molding composition comprising at least one polyolefin, at least one delignified wood pulp fiber, at least one maleic anhydride-grafted polyolefin and at least one metal oxide chosen from oxides of alkaline earth metals or of zinc.
A process for producing surface modified bleached chemical pulp fiber comprising fluidizing the bleached chemical pulp fiber and contacting the fluidized bleached chemical pulp fiber with an aerosol of a surface modifying composition comprising a surface modifying compound.
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.
C08B 11/12 - Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals substituted with carboxylic radicals
C08B 11/14 - Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals with nitrogen-containing groups
C08B 11/15 - Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals with nitrogen-containing groups with carbamoyl groups
C08B 15/08 - Fractionation of cellulose, e.g. separation of cellulose crystallites
C08J 3/05 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
A process for producing a precursor material comprising the steps of, agitating a polymer material and a fibre material in a blending device comprising a blending means operating at a velocity sufficient to bring about an increase of the temperature to at least a temperature beyond the VI CAT softening point or within or beyond the melting temperature range of the polymer material. Thereafter, maintaining the velocity of the blending means and, when the specific motor power needed to maintain the velocity of the blending means increases by a predetermined amount or reaches a predetermined value, reducing the velocity. Repeating the previous step as necessary, until the velocity falls below a first threshold value to form an intermediate material. Finally, comminuting the formed intermediate material in a comminuting device comprising a comminuting means operating at a velocity allowing a decrease in temperature, until the temperature falls below a second threshold value.
B29B 7/16 - MixingKneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B29B 9/14 - Making granules characterised by structure or composition fibre-reinforced
B29B 7/74 - MixingKneading using other mixers or combinations of dissimilar mixers
v. collecting the dry, water-dispersible, non-surface modified nanocellulose particles and/or forming the powderous composition comprising said particles.
B01D 1/18 - Evaporating by spraying to obtain dry solids
D21C 9/00 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
F26B 3/12 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour carrying the materials or objects to be dried with it in the form of a spray
D21H 11/18 - Highly hydrated, swollen or fibrillatable fibres
C08J 3/03 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
C08J 3/09 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
B82Y 40/00 - Manufacture or treatment of nanostructures
13.
DRYING OF NANOCELLULOSE USING AMMONIA IN A SUPERCRITICAL STATE
It is an object of the present invention to provide a process for producing non-surface modified nanocellulose particles, in particular in the form of a powder, comprising the steps of i. providing a suspension of never-dried, non-surface modified nanocellulose particles in an aqueous liquid, which aqueous liquid is non-solubilising for the non-surface modified nanocellulose particles, and which aqueous liquid is water or an aqueous solution of morpholine or piperidine or mixtures thereof, ii. contacting the suspension of non-surface modified nanocellulose particles with a fiuid in a supercritical state, which fiuid is miscible with the aqueous liquid and is non-solubilising for the non-surface modified nanocellulose particles, under conditions suitable for the transfer of the aqueous liquid into the fluid in a supercritical state, iii. removing the aqueous liquid and the fluid in a supercritical state, preferably by controlling pressure and/or temperature, to form the non-surface modified nanocellulose particles, iv. collecting the non-surface modified nanocellulose particles, characterized in that the fluid in a supercritical state comprises, or consists of, ammonia (NH3) in a supercritical state.
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.
C08B 15/08 - Fractionation of cellulose, e.g. separation of cellulose crystallites
C08J 3/02 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
C08J 3/03 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
C08J 3/05 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
A process for the preparation of particulate acylated biopolymer comprising anhydroglucose units, said process comprising the steps of a. dispersing an amount of particulate non-surface modified biopolymer comprising anhydroglucose units in an amount of a liquid alkenyl carboxylate, or of a mixture of two or more liquid alkenyl carboxylates, in order to form a first dispersion, b. adding a catalytic composition to the first dispersion such a to form a second dispersion, c. heating the second dispersion to a temperature above ambient temperature d. cooling the second dispersion to ambient temperature, e. isolating the obtained particulate acylated biopolymer, wherein the amount of a liquid alkenyl carboxylate, or a mixture of two or more liquid alkenyl carboxylates, corresponds to a molar excess of alkenyl carboxylate, the molar excess being defined with respect to the moles of anhydroglucoseunits comprised in the amount of the particulate non-surface modified biopolymer, and wherein the catalytic composition comprises an amount of one, or two or more, non-nucleophilic bases.
A process for producing a precursor material for the manufacture of a composite material granulate, said precursor material comprising a polymer material and a fibre material, said process comprising the steps of, in this order; agitate a polymer material and a fibre material in a blending device comprising a blending means by operating the blending means at a velocity sufficient to bring about an increase of the temperature to at least a temperature beyond the VI CAT softening point, or a temperature within or beyond the melting temperature range of the polymer material; b. maintain the velocity of the blending means; c. when the specific motor power needed to maintain the velocity of the blending means increases by a predetermined amount or reaches a predetermined value, reduce the velocity by a predetermined amount; d. repeat the previous step c. until the velocity falls below a first threshold value, thereby forming an intermediate material; e. comminuting the formed intermediate material in a, preferably cooled, comminuting device comprising a comminuting means by operating the comminuting means at a velocity allowing a decrease in temperature, until the temperature falls below a second threshold value, thereby forming the precursor material.
B29B 7/16 - MixingKneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
B29B 7/28 - Component parts, details or accessoriesAuxiliary operations for measuring, controlling or regulating, e.g. viscosity control
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.
The present invention provides for a process for producing dry, water-dispersible, non-surface modified nanocellulose particles or a powderous composition r comprising said particles comprising the steps of: i. providing a first suspension of non-surface modified cellulose particles in an first aqueous liquid, which aqueous liquid is non-solubilizing for the non-surface modified nanocellulose particles, ii. exchanging substantially all of the first aqueous liquid of the first suspension for a second solvent, which is miscible with the first aqueous liquid and non-solubilizing for the non-surface modified nanocellulose particles, to form a second suspension of non-surface modified nanocellulose particles in said second solvent, iii. contacting a flow of the second suspension of non-surface modified nanocellulose particles with a flow of a fluid in a supercritical or critical state, which fluid in a supercritical or critical state is miscible with the second solvent and non-solvating for the non- surface modified nanocellulose particles under conditions suitable for the transfer of substantially all of the second solvent into the supercritical fluid, iv. removing the second solvent and the fluid in a supercritical or critical state, preferably by controlling pressure and/or temperature, to form the dry, water-dispersible nanocellulose particles, v. collecting the dry, water-dispersible, non-surface modified nanocellulose particles and/or forming the powderous composition comprising said particles.
B01D 1/18 - Evaporating by spraying to obtain dry solids
F26B 3/12 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour carrying the materials or objects to be dried with it in the form of a spray
D21C 9/00 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
The present invention provides for a dispersion containing cellulose particles dispersed in a continuous liquid phase comprising a first and a second continuous liquid phase, wherein the first continuous liquid phase consists of a liquid swelling agent or an aqueous solution of said liquid swelling agent, and the second continuous liquid phase comprises, preferably consists of, one or more organic solvents, with the proviso that the one or more organic solvents of the second continuous liquid phase are not capable of dissolving cellulose, have a boiling point higher than the boiling point of the first continuous liquid phase, and are miscible with the constituents of the swelling composition.
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.
The present invention is directed towards a low energy method for the preparation of nanocellulose using selected organic or inorganic swelling agents. The use of these swelling agents allows opening up the intercrystalline structure and partially the intracrystalline structure of cellulosic materials thereby achieving a reduction in the energy required to subsequently process the resultant swollen cellulose material into nanocellulose.
A method for the spinning of a fiber comprising cellulose nano-fibrils aligned along the main axis of the fiber from a lyotropic suspension of cellulose nano-fibrils, the nano-fibril alignment being achieved through extension of the extrude fiber from a die, spinneret or needle, wherein the fiber 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 homogenized 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 fiber obtained according to this method and to a cellulose fiber which contains at least 90% wt of crystallized cellulose.
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
The present invention is directed towards a method for preparing a stable, high solids suspension of neutral or anionically modified cellulose nanofibrils, preferably having a solid content of neutral or anionically modified cellulose nanofibrils of 6 to 80 %, comprising the steps of: (a) isolating neutral or anionic cellulose nanofibrils from cellulose-based material and (b) preparing a stable suspension of the neutral or anionic cellulose nanofibrils in a (viscous) continuous phase that is suitable for use as a basis for fibre spinning.
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.
D01D 5/40 - Formation of filaments, threads, or the like by applying a shearing force to a dispersion or solution of filament formable polymers, e.g. by stirring
D01F 2/24 - Monocomponent artificial filaments or the like of cellulose or cellulose derivativesManufacture thereof from cellulose derivatives
D21H 13/00 - Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
D21H 15/00 - Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
The present invention is directed towards a method for spinning anionically modified cellulose comprising the steps of: (a) preparing a suspension of the anionically modified cellulose in a continuous phase; (b) subjecting the suspension to high shear rate; (c) performing spinning by extruding the cellulose suspension through a spinneret into a spin bath comprising a cationic complexing agent, and (d) isolating the spun fibres from the spin bath; as well as fibres obtained based on the method of the invention and paper or board products derived from such fibres.
D01D 5/40 - Formation of filaments, threads, or the like by applying a shearing force to a dispersion or solution of filament formable polymers, e.g. by stirring
D01F 2/24 - Monocomponent artificial filaments or the like of cellulose or cellulose derivativesManufacture thereof from cellulose derivatives
D21H 13/00 - Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
D21H 15/00 - Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
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.
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.
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.
B41M 5/50 - Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
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.The fibrils used in this method can be extracted from a cellulose-rich material such as wood. The invention also related to acellulose-based fibreobtained according to this method and to a cellulose fibrewhich contains at least 90 % wt of crystallised cellulose.
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.
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.
The document describes a coated paper for offset printing e.g. with a TAPPI 75° gloss value of below 35% or with high gloss properties, comprising at least on one side a top coating layer, said top coating layer comprising a pigment part, the 100 parts in dry weight thereof comprising in the range of 5 - 40 parts in dry weight of a fine particulate ground calcium carbonate with surface and internal structure modification as a result of treatment with one or more medium to strong H3O+ providers and eventually additional treatment with gaseous carbon dioxide, a binder part of 2 - 20 parts in dry weight of binder and (regular) additives in the range of 0 - 8 parts in dry weight.
B41M 5/50 - Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
An ink jet paper as well as a method for its manufacture is disclosed comprising at least one image receiving coating layer and at least one pre-coat layer beneath said image receiving coating layer on a paper substrate, wherein the pre-coat layer comprises 100 parts in dry weight of a pigment part consisting of 20-75 parts in dry weight of a fine particulate calcium carbonate and/or kaolin; 10 - 70 parts in dry weight of at least one fine particulate silica and/or of a fine particulate ground calcium carbonate with surface and internal structure modification as a result of treatment with one or more medium to strong H3O+ ion providers and optionally with additional treatment of gaseous carbon dioxide; and 0 - 30 parts of additional fine particulate pigments 4 - 20 parts in dry weight of a binder part 0-6 parts in dry weight of additives; and the image receiving coating layer comprises 100 parts in dry weight of a pigment part consisting of 50 - 100 parts in dry weight of at least one fine particulate silica; 0 - 50 parts in dry weight of a fine particulate polymer pigment; and 0 - 30 parts of additional fine particulate pigments 2 - 10 parts in dry weight of a binder 0-3 parts in dry weight of additives.
Disclosed is a printing sheet for offset printing, comprising at least one image receiving coating and optionally one or several pre-coatings beneath said image receiving coating, said coatings comprising a pigment part, a binder part, and optionally additives, wherein the pigment part essentially consists of one or a mixture of fine particulate pigments selected from the group of carbonate, kaolin, solid or vacuolated polymer pigment, wherein said binder part comprises waterglass.
A method for the preparation of a silica slurry in water is described. The proposed silica slurry can be advantageously used as a constituent of a coating formulation for a paper comprising precipitated silica and/or silica gel as well as at least one further fine particulate pigment, in particular for an offset paper. The method includes, in the given sequence, the steps a) making a dispersion of the at least one further fine particulate pigment in water, b) adding the silica in dry powdery form to that dispersion.
The invention relates to an injection-molding composition comprising at least one polyolefin, at least one delignified wood pulp fiber, at least one maleic anhydride-grafted polyolefin and at least one metal oxide chosen from oxides of alkaline earth metals or of zinc.
A process for producing a precursor material for the manufacture of a composite material granulate, said precursor material comprising a polymer material and a fibre material, said process comprising the steps of, in this order; agitate a polymer material and a fibre material in a blending device comprising a blending means by operating the blending means at a velocity sufficient to bring about an increase of the temperature to at least a temperature beyond the VI CAT softening point, or a temperature within or beyond the melting temperature range of the polymer material; b. maintain the velocity of the blending means; c. when the specific motor power needed to maintain the velocity of the blending means increases by a predetermined amount or reaches a predetermined value, reduce the velocity by a predetermined amount; d. repeat the previous step c. until the velocity falls below a first threshold value, thereby forming an intermediate material; e. comminuting the formed intermediate material in a, preferably cooled, comminuting device comprising a comminuting means by operating the comminuting means at a velocity allowing a decrease in temperature, until the temperature falls below a second threshold value, thereby forming the precursor material.
B29B 7/16 - MixingKneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
B29B 7/28 - Component parts, details or accessoriesAuxiliary operations for measuring, controlling or regulating, e.g. viscosity control
patents
