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WO/2001/034901A1 |
The invention concerns a method for reconverting bales of raw materials, such as paper, cardboard, cellulose, into pulp. Said method consists in: first, removing the straps from the bales of raw materials; then, simultaneously pre-dehydr...
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WO/2001/026804A1 |
The invention relates to a tubular reactor (10) for treating reaction material that is supplied in batch quantities. The inventive reactor is provided with at least two successive sections of the inner chamber (30, 32) and an inlet (40) ...
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WO/2001/027383A1 |
The invention relates to a method for minimising the new water use in the water circulation system of a treatment plant. The material to be treated is purified and/or disintegrated by means of water in a treatment step. The suspension co...
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WO/2001/021512A2 |
The invention relates to a sorting device for particles (P) of differing sizes, comprising at least two conveying units (1, 2, 3), whereby the particles which are to be sorted are fed upstream to said units. A height gradation (H) of the...
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WO/2001/021312A1 |
The object of the invention is a method and a device for dispersing pulp, especially pulp containing waste paper, in which method ground pulp mass is fed between the blade surfaces (3) of a dispersing device that are brought in a rotatin...
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WO/2001/020074A1 |
A method in connection with the production of mechanical pulp from a cellulose containing material, wherein the material is processed in at least one refining step to produce pulp. According to the invention, the pulp is fractionated (4)...
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WO/2001/010885A2 |
The invention provides methods for separating outer birch bark from inner birch bark. The invention also provides methods for isolating betulin; lupeol; betulinic acid; 9,10-epoxy-18-hydroxyoctadecanoic acid; 9,10,18-trihydroxyoctadecano...
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WO/2000/073571A1 |
The invention relates to a method for the control of a ground wood pulping process, whereby pulpwood logs are pressed against the periphery of a rotating grinding stone, the grinding stone is sprayed with water, and the generated fibre s...
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WO/2000/071810A1 |
The invention relates to a method for sorting a paper mixture according to which the paper mixture is sorted into a fraction of mixed paper and a fraction of deinking paper. The aim of the invention is to improve the sorting process in s...
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WO/2000/069543A1 |
A device for continuous separation of solid particles and gas. The device comprises a housing (1) with substantially circular cross-section and in said housing a rotor (2) provided with carriers (4). A tangential inlet (5) for a mixture ...
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WO/2000/056973A1 |
A method and apparatus for subjecting a material in a liquid to explosive forces is provided. The method and apparatus involve a vessel (5) having a length greater than its width. The vessel (5) has a top (10) which is quickly and easily...
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WO/2000/053342A1 |
The invention aims to improve the sorting quality of a sorting device capable of high through-put and having a simple structure, notably of a device for sorting paper and cardboard waste. The products to be recycled are delivered to the ...
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WO2000035588B1 |
A method for arranging the raw material, energy and waste management of a production plant manufacturing pulp and/or paper and/or board from recycled fibres, as well as a production plant applying the method, which plant is advantageousl...
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WO/2000/053844A1 |
There is a need to enhance the bleaching effect achieved when bleaching mechanical and chemithermomechanical pulp with a reductive bleaching agent. This can be achieved with the present invention, which relates to a method for manufactur...
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WO/2000/052256A1 |
The main aspect of the present invention is based on introducing process fluid into a compressive pretreatment stage, in an environment of elevated temperature and pressure, thereby initiating lignin dissolution in the chips at a point f...
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WO/2000/050688A1 |
The combination of low residence time (R) with high saturation pre-heat temperature/pressure (T) followed by high speed disc refining (S), is utilized in both primary and secondary refining stages. This use of the RTS process in both pri...
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WO/2000/039388A1 |
Wood fiber morphology can be permanently altered by introducing a substantial kink, twist, curl, crimp or other curvilinear deformation into a wood fiber. Wood fibers are first Fiberized using mechanical treatment processes and then are ...
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WO/2000/039387A2 |
A process for the production of a fiber having a permanently modified fiber morphology comprising a curl index of at least 0.2 resulting in a fiber with increased bulk, increased surface area and low density, the process comprising: (a) ...
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WO/2000/030771A1 |
A modular screening apparatus (20) has four parallel shafts (50, 58, 60, 64) arranged in a single plane mounted to each module. The shafts extend between the sides of the machine frame and are driven by a motor (44) and timing belts (56,...
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WO/2000/031335A1 |
The present invention relates to a process for production of upgraded TMP to SC/LWC qualities. The newsprint pulp is pumped to an LC-refiner (1) in which the average fibre length is reduced, and is then transferred to a primary screen (2...
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WO/2000/029665A1 |
The device comprises a preliminary grinding machine (100) represented by a cylindrical rotor (5) with beaters (6) placed in staggered order on its surface, converging-diffusing connecting channel (9), centrifugal breaker (10), and output...
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WO/2000/025600A1 |
A method for processing straw pulp that includes caustic treatment is provided. The caustic treated straw pulp can be incorporated into a papermaking furnish to provide a paper product. The caustic treated pulp imparts strength to papers...
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WO/2000/021677A1 |
A method and apparatus (10) for decontaminating a liquid suspension comprising a decontaminating cell (12). The decontaminating cell (12) as shown in the Figure has an upper light contaminate collection hood (30) and/or a lower heavy con...
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WO/2000/019004A1 |
A process for producing unbleached pulp suitable for the production of bleached paper from a feedstock comprising subjecting the feedstock to a steam explosion process in a reactor at a semi-alkaline pH to produce pulp.
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WO/2000/019005A1 |
A method of making sanitary paper products from coarse fibers. The method includes the steps of: (a) pulping coarse fibers in water with agitation to produce a pulp slurry, the pulp from the coarse fibers having an average fines content ...
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WO/2000/016888A1 |
A mixing chamber for mixing components added to a liquid, wherein at least one of the components has a tendency to flocculate or create agglomerations. The mixing chamber is provided with at least one inlet port (24, 27) for introducing ...
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WO/2000/015569A1 |
A method of treating inorganic fibrous material such as glass fibre, ceramic fibre, mineral wool, basalt wool, rock wool, comprises feeding the fibrous material to apparatus comprising a rotating shaft carrying external protruberances, w...
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WO/2000/015568A1 |
Glass fibre is in the form of rigid monofilament fibres, at least 30 % of the monofilament fibres having a diameter greater than about 30 $g(m)m and/or at least 50 % of the monofilament fibres having an aspect ratio of less than 30. The ...
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WO/2000/012810A1 |
A method for preparation of a fibrous stock suitable for manufacture of paper out of herb-stemmed plants, such as, for example, straw or flax. The method comprises steps in which the fibrous raw-material is cut into chips, cooked, and bl...
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WO/2000/011259A2 |
This invention relates to a device for producing cellulose which includes the following: a cooking reactor which contains sulfate alkali liquor and a lignocellulose material; a DC source and electrodes in contact with the sulfate alkali ...
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WO/2000/009770A1 |
Process and apparatus for recovering metal material from waste material including organic material, such as plastic, and metal material in the form of thin foil material. The process includes following steps: (a) introducing the waste ma...
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WO/2000/009771A1 |
Process and apparatus for recycling of liquid carton waste material or other similar waste material which includes fibrous material, metal and plastic material. The process including following steps: (a) introducing the waste material an...
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WO/2000/004232A1 |
A plant which serves to produce a nonwoven web of fibres (20) out of a fibrous material, such as cellulose pulp (6). The plant comprises a hammer mill (1) for defibrating the fibrous material and a forming head (2) for forming a web of f...
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WO/2000/002671A1 |
A chip screening method and plant wherein the pin chips (9) are separated from the rest of the chips and dosed among chips that are to be led to a subsequent process (7) so that the share of the pin chips (9) relative to the total amount...
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WO/2000/001217A1 |
A transportable floral holder in the nature of a wettable floral foam mass (16) received within a water impervious shell, or sheath (14). The floral foam mass (16) serves as a reservoir as well as a coupling device. The shell (12) not on...
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WO/2000/001878A1 |
The invention relates to a coarse dirt collector (7) for removing coarse material from a pulper (1). The coarse dirt collector (7) comprises a support arm (8) with a collecting basket (9). The collecting basket (9) consists of a frame (1...
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WO/2000/001877A1 |
The invention provides a process and apparatus for the treatment and recovery of fibreboard and particle board waste. Waste fibreboard and particle board is fed into a steam chamber (8) and steam treated with steam under pressure from a ...
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WO/1999/066119A1 |
Composite panels and pulp, and paper products of the pulp, are produced from Arundo donax. In the fabrication of the composite panels, Arundo donax is comminuted (20) to a suitable size, combined with a binder (40, 50), and consolidated ...
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WO/1999/063148A1 |
The invention relates to a pulper device comprising a vessel (1) in which an annular flow can be generated. Said flow acts upon a liquid-solid mixture located inside said vessel (1) and effects a pulping of the same. Said device also com...
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WO/1999/061173A1 |
A method and an apparatus for the sorting of chips (3). The chips, which have kinetic energy, are separated from each other on the basis of the form or the length of their flight curve which depends on their air resistance. The kinetic e...
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WO/1999/061699A1 |
The invention relates to a method for flotation of pollutants from an aqueous fibrous material suspension (S), said method being particularly used in the processing of printed or soiled used paper. According to the invention, the fibrous...
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WO/1999/054543A1 |
A mixture of air, paper stock made from recycled paper, foaming agents and surfactants are injected into a pressurized container (22). The container has a stock inlet (23) at an end opposite a stock outlet (50), and three outlets (38, 58...
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WO/1999/054045A1 |
The object of the invention is a method for processing pulp stock derived from a pulp or paper mill, which pulp stock contains fibres and/or any other components, such as mineral components, in order to disperse the agglomerations in the...
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WO/1999/049127A1 |
The invention relates to a process for removing contaminants from waste paper comprising a) leading an inert gas through an aqueous pulp, which pulp comprises waste paper fibers and contaminants, to produce a foam comprising at least par...
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WO/1999/049129A1 |
A method for the extraction, from a highly tannic woody material, of a tannic substance contained therein, and/or for the production of a usable lignocellulose product in particle form, comprises the following successive steps: a first f...
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WO/1999/046443A1 |
A method of papermaking having zero liquid discharge. A pulp slurry (1) is produced from recycled cellulosic material and the slurry contains suspended cellulosic fiber material, solid contaminants and dissolved water soluble solids. The...
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WO/1999/043886A1 |
The invention relates to methods and an arrangement for treating a fluid mass or stock (32), especially couch stock or the like in paper making, where stock material (30) is fed to a vessel (10) having a mixing arrangement comprising rot...
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WO/1999/042651A1 |
A method for removing wax from a pulp furnish is disclosed. The method is effective for removing wax from a pulp furnish containing waxed old corrugated containers (OCC). In the method, the pulp furnish containing waxed OCC is treated wi...
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WO/1999/041448A1 |
A process for producing a pulp suitable for papermaking from a nonwood fiber source material is described. Exemplary nonwood fiber source materials include kenaf and industrial hemp. The process includes the steps of washing the nonwood ...
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WO/1999/039043A1 |
A method and an apparatus for wetting fibrous material, such as coarsely shredded waste paper. Fibrous material and wetting fluid is introduced into a wetting enclosure. Pressure is decreased within the wetting enclosure for a short peri...
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