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WO/1998/004774A1 |
A method of treating wood-fibre pulp, particularly wood-fibre pulp that contains recycled paper, comprises delivering the pulp to and advancing the pulp in a heating zone while delivering steam to the heating zone. The pulp is finely-div...
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WO/1997/049494A1 |
A method of recovering the different components of multiple layer materials, for instance consisting of pieces (20) of paper, plastic and aluminium foil, comprises delivering the material to the infeed zone (4) of a refiner or disperser ...
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WO/1997/049857A1 |
The invention relates to a method for the control of a groundwood pulping process. According to the invention the drainability (freeness, CF) of the pulp and another quantity Q characterising the pulp quality are measured, whereby the qu...
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WO/1997/048493A1 |
The present invention provides an apparatus and method for decontaminating aqueous paper pulp, the apparatus comprising a decontaminating cell (12). The decontaminating cell (12) has an upper light contaminate collection hood (30) and/or...
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WO/1997/046309A1 |
The present invention relates to a method and a device for mixing a second medium into a first medium. The method and the device according to the invention are particularly advantageous when used for mixing different chemicals, both liqu...
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WO/1997/044185A1 |
Apparatus for recycling office waste paper and the like of the type having ink and laser print particles coated thereon. The apparatus (200) includes two screw shafts (212, 214) disposed in substantially parallel relationship within a ho...
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WO/1997/033036A1 |
An improved process is disclosed for deinking waste paper which contains laser, electrostatic, and other non-impact printing toners/inks to produce high quality (high brightness, little to no dirt content) pulp with little or no fiber lo...
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WO/1997/032073A1 |
Coarse cellulosic material is delivered into a feed hopper (1) having an outlet fitted with a rotary valve (2). The coarse material is blown to a grinder (10) and classifier (11). The grinder (10) has a drive unit with a power load monit...
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WO/1997/030206A1 |
There is disclosed a method for recovering fiber from printed wastepaper by loading the wastepaper and water into a continuous batch fiber recovery apparatus. The wastepaper and water are agitated within the apparatus to form a pulp fibe...
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WO/1997/028305A1 |
The invention relates to a process and apparatus for pretreating pulp raw material, to be subsequently prepared in a chemical pulping process, and for preparing cellulose pulp from a fibrous starting material. According to the process th...
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WO/1997/026401A1 |
The invention relates to a process for producing pulp, from raw lignocellulosic material based on annual or perennial plants, or residues of such plants. The process comprises impregnating said raw material with an aqueous soda solution ...
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WO/1997/026408A1 |
The invention relates to a procedure for the marking of paper and detection of marked paper for sorting when the paper is recycled, in which procedure a chemical tracer corresponding to the number of times the pulp has been used in the p...
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WO/1997/024186A1 |
An original and profitable industrial method is described to process garbage, in which are included: a) separation of written paper on the incoming garbage mechanically or manually which is deinked and pulped to chemical pulp; b) cutting...
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WO/1997/023291A1 |
Refining element intended for a refiner with flat or conical opposed refining surfaces, which are rotary relative to each other for working and refining lignocellulosic material during its passage through a refiner gap (15, 35) between t...
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WO/1997/022749A1 |
Process for producing lignocellulosic pulp fibers with improved properties by treating the refiner pulp with chemicals to adjust the pH, treating it at high temperature and with chemical charges, and thereafter subject it to a refining s...
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WO/1997/020102A1 |
A method for continuously preparing cellulose pulp, in particular for use in the chemical or paper industry, from a raw material consisting of textile fibres. The method comprises separating the textile fibres from foreign matter, contin...
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WO/1997/018037A1 |
A pair of co-operating refining elements (10, 11) intended for a disc refiner for finely disintegrating and refining lump-shaped lignocellulosic material in a refiner gap (5, 6) between two opposed refining discs (1, 2). The outer portio...
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WO/1997/016590A1 |
The object of the invention is a method and equipment manufacturing predetermined low bark content wood chips and a high bark content fuel fraction from wood chips with bark attached, which method includes the following stages: mechanica...
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WO/1997/013025A1 |
The present invention relates to the use of certain Basidiomycette fungi, in particular, white rot fungi, such as Phlebia tremellosa, Trichaptum biforme, Schizophyllum commune, and Phanerochaete gigantea, in preconditioning wood or pulpw...
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WO/1997/005970A1 |
Coated objects (304) are recycled by irradiation with a laser beam (300). The invention is applied ot objects (such as documents) that include an entry surface (308), a surface (306) coated with a coating (such as text or graphics printe...
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WO/1997/005323A1 |
A device for removing ink from laser print paper comprising an adhesion roller or belt for heating and applying pressure on the sheet of paper, softening the thermosetting ink film surface, reducing the adhesion of the ink to the sheet o...
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WO/1996/041914A1 |
A method for refining lignocellulose-containing material into pulp in a primary refiner, preferably a disc refiner (32). The material is preheated (20, 22, 24) to a temperature greater than the glass transition temperature of the lignin ...
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WO/1996/041894A1 |
A bubble-actuated pump (22) is used for removing dross (21) from the surface of a bath of molten metal (14). A modification of the pump (24) is employed for delivering molten metal to the dross (21) for diluting it.
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WO/1996/039557A1 |
The invention discloses a kneader for the preparation of paper stuff comprising: a substantially cylindric tank (2; 120) having on the internal wall vertical ribs (21) able to interrupt the rotation of the stuff stream; a rotor (13; 130)...
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WO/1996/038624A1 |
For mechanical defibration of wood, the method comprises kneading wood and separating fibres from the wood by means of the contours of the defibration surface. A regular contour of the defibration surface and a correct speed of the surfa...
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WO/1996/038623A1 |
A chip destructuring and fissuring machine (10) for destructuring wood chips (24) or the like. The chip destructuring machine (10) includes a support frame (16) and two swing assemblies (12, 14) that provide parallel side-by-side squeeze...
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WO/1996/038625A1 |
The invention relates to a process for crushing a cellulose material in which crushing takes place in at least two stages, where (1) the cellulose material is precrushed, whereby particles of various sizes are formed, (2) the particles p...
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WO/1996/036763A1 |
A pulping apparatus for mixing fibrous stock materials for recycling thereof, comprising a vessel having a passageway therethrough defined by an inlet (12) opening and an outlet opening. The vessel includes a rotatable axial shaft dispos...
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WO/1996/036764A1 |
Recycling of mixed wastepaper, including plastic coated paper and printed paper, is accomplished by repulping (12) the wastepaper mixture to disperse paper fibers, ink and plastic components into a pulp medium. Contact with a deinking ch...
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WO/1996/035016A1 |
A feeder assembly (36) for lignocellulosic chip refiner (10) has a conical core (50) having a major diameter end and a minor diameter end. A helically coiled ribbon (38) is supported by and extends longitudinally in spaced relation with ...
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WO/1996/033309A1 |
A method for making lignocellulose fibers, which may be optionally coated with a suitable thermoplastic, wherein the starting materials may be chosen from a wide variety of generally non-recyclable contaminated wood, paper, and/or plasti...
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WO/1996/032203A1 |
A wood chip screening system has an infeed end, outfeed end and elongated thin blades (40, 42) mounted for reciprocating motion extending therebetween. The blades (40, 42) are spaced apart to allow chips with an acceptable thickness dime...
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WO/1996/029465A2 |
It has already been proposed to use measuring devices to detect spectral and/or physical characteristics with a subsequent neuronal network in the production of de-inked cellulose, whereby corrections for an existing regulating or contro...
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WO/1996/027706A1 |
The present invention relates to a method and an apparatus for treatment of recycled fiber material and/or of reject fraction discharged as mill reject from the screening system of the short circulation of a paper machine, for recovering...
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WO/1996/027045A1 |
Washing machines (13, 15) are utilized to recycle plastic and cellulose from disposed diapers (49). The disposed diapers are loaded into a washing machine (13) and, while being agitated, are washed in water, alkali and soap. During washi...
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WO/1996/025551A1 |
The invention relates to a process for recovering raw materials from a stream (R) of residual or collected materials consisting of several different substances produced during the manufacture of paper (P) in a paper mill (1) and/or a mat...
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WO/1996/019612A1 |
A process (1) for the separation of cellulosic fibres from non-cellulosic fractions in paper product is disclosed. The paper product comprises cellulosic fibres and at least one of thermoplastic polymer and metallic foil. The process (1)...
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WO/1996/019613A1 |
A process for the separation of cellulosic fibres from coated paperboard is disclosed. The coated paperboard is disclosed. The coated paperboard is comprised of at least one layer of cellulosic fibres coated on at least one side with at ...
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WO/1996/018769A1 |
The invention relates to a device for processing particulate material comprising a grinder (1), means (2) for introducing a particulate material into the grinder; a disc disperser (8) and means (7, 9) for transferring particulate materia...
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WO/1996/017124A1 |
The chip supporting gates (36, 37) in a chip bin assembly (20-28) are mechanically mounted for synchronous movement so that chips flowing into the chip bin (20) interior between the gates (36, 37) falls into the chip bin (20) (e.g., subs...
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WO/1996/016743A1 |
The invention relates to flotation apparatus and a method of deinking furnish free from ink and colour pigment particles, said apparatus comprising at least one flotation cell with a piping connected thereto for feeding a furnish flow in...
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WO/1996/016222A1 |
Methods of recycling office waste paper of the type having ink and laser printed thereon. The wastepaper is simultaneously pulped and ink particles dispersed by kneading (2) the waste paper in the form of a high solids content aqueous mi...
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WO/1996/014167A2 |
A tensioning member for a blade screen that permits simultaneous tensioning of a plurality of blades in a blade screen, such as for wood chip sorting. The blades may be provided with a sawtooth detail on a bottom edge to reduce the build...
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WO/1996/014462A1 |
A guide vane (25) is provided in a pin fluffer (10) to assist in pulp mat retention during fluffing by providing a cyclic lift component to the mat as it passes over the vane (25) thereby also further increasing retention time obtained i...
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WO/1996/012569A1 |
Provided in a casing (31) are a rotating shaft (32), a cylindrical-shaped wire body (33) which coaxially surrounds the rotating shaft (32) and rotates in an opposite direction to that of the rotating shaft (32), a screw shaft (34) dispos...
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WO/1996/012061A1 |
Two rolls (34, 36) are mounted to a frame (30) and rotated about spaced parallel axes (62) by electric motors (56) operating through speed reducers (58). Each roll (34, 36) has a surface (40, 42) formed of uniformly spaced, circumferenti...
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WO/1996/010674A1 |
A chip bin (10) for wood chips in a continuous digester system includes internal steaming that is controlled in response to both the interior temperature across the level of chips in the bin, and the level of chips in the bin, so as to s...
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WO/1996/009901A1 |
A fan (30) draws air out of a cyclone (28) and through an open-bottomed separation chamber (22) at approximately seven hundred to eight hundred feet per minute. Shredded plastic bottles or other mixed particulate material is metered into...
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WO/1996/008321A1 |
A chamber (22) has an outlet (24) which opens downwardly to the atmosphere and an upwardly opening air return plenum (28). A duct (38) is inclined upwardly at approximately sixty degrees to the horizontal, and a fan (32) mounted therein ...
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WO/1996/006972A1 |
An apparatus for slushing and sorting fibrous material comprises preferably a rotating defibration drum (1), where a material is to be defibred, impregnated with a defibration and disintegration fluid, is disintegrated. The apparatus com...
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