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Patent Searching and Data


Matches 601 - 650 out of 3,658

Document Document Title
WO/2001/051168A1
The wedge wire screen of the present invention accomplishes economical manufacture of a durable cylindrically shaped screen, for use in closed pressure screens for the precessing of wood fibers or secondary fibers into paper pulp stock, ...  
WO2000065151A8
A screen cylinder (125) formed from discrete elements (128) (a wedge wire type screen cylinder) is constructed to accurately simulate the form of a substantially sharp edge milled screen cylinder having substantially the same contour. Th...  
WO/2001/048308A1
A method of draining water from low-consistency water-fibre suspensions. In the method, the water-fibre suspension is fed to a filtering surface comprising holes. In the method, the rougher fibres are first separated from the water-fibre...  
WO/2001/046516A1
The object of the present invention is a method for making mechanical pulp, such as thermomechanical or chemi-thermomechanical stock. The mechanical pulp is used as a raw material for printing paper, and its freeness value is 30-70 ml CS...  
WO/2001/042557A1
The object of the present invention is a method for making mechanical pulp, such as thermomechanical or chemi-thermomechanical stock. The mechanical pulp is utilised as a raw material for printing paper, and its freeness value is 30-70 m...  
WO2001017638A3
A forward hydrocyclone (10) for the centrifugal separation of heavy contaminants contained in a suspension of papermakers fibers is formed with an elongated hollow arcuate body (12) of circular cross-section which converges with constant...  
WO/2001/042556A1
The invention relates to a method for separating cellulose fibre pulp when the cellulose fibre pulp to be separated forms a mixture with a medium which is substantially in gaseous form, for example with steam or air. The cellulose fibre ...  
WO/2001/040570A1
The present invention relates to an arrangement and a rotor for screening of pulp. The arrangement and rotor according to the invention are especially suitable for the screening of chemical and mechanical pulps, i.e. fiber suspensions of...  
WO/2001/037998A2
A refiner for refining lignocellulosic material having opposed, relatively rotating, rotor and stator refiner plates. The refiner plates each have radially inner and outer edges and an inlet zone extending radially outward from the inner...  
WO/2001/036741A1
The invention relates to a method for producing fittings for processing paper fibrous material in which the actual processing element (2) and the base body (1) are separately manufactured, assembled and then interconnected in a fixed man...  
WO/2001/029297A1
Apparatus for separating pulp fibres into fractions enriched for the more flexible or less flexible fibres, particularly enriched based on fibre length, by causing a plurality of fibres to impinge onto a number of parallel edges 50, so t...  
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...  
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...  
WO/2001/017638A2
A forward hydrocyclone (10) for the centrifugal separation of heavy contaminants contained in a suspension of papermakers fibers is formed with an elongated hollow arcuate body (12) of circular cross-section which converges with constant...  
WO/2001/014633A1
The present invention relates to a method and apparatus for controlling the operation of an approach system of a paper machine or the like web formation apparatus. Especially preferably the method of controlling the operation of an appro...  
WO2000052255A3
A papermaking refiner (20) has two stationary disks (60, 64) mounted to the support structure of a fixed housing (34). A rotating disk (42) is mounted on a shaft (26) which extends through the housing. The support structure allows stock ...  
WO/2001/007711A1
The invention relates to a method of washing a fibre pulp mixture, in which method the fibre pulp mixture is fed between two filter wires (1, 2) running in the same direction. There is a convergent dewatering space (3) in the direction o...  
WO/2001/007872A2
A pressure screen is disclosed for use in screening pulp suspension, utilizing the principle of a cylindric screen provided with a pulse generating device such as hydrofoils (34). As is usual, the screen has a cylindric housing (12) but ...  
WO/2001/003804A1
This invention relates to a method of separating vapor generated in the defibration of mechanically defibrated wood pulp and used for removing the fibers from the defibrator, from the fibers by means of a centrifugal force, and of transf...  
WO/2000/078458A1
The invention relates to a method and a device for measuring stress forces in refiners having refining discs that between them define a refining gap for refining material between bars (3) arranged on the refining discs. According to the ...  
WO/2000/075419A1
Device for washing and dewatering a fibre pulp suspension, which device comprises two hollow, circular-cylindrical screen members (1), which screen members contain evacuation chambers, internally in the screen members, for conducting awa...  
WO/2000/075422A1
The invention concerns a method and an equipment for combining in one single apparatus, the functions for filtering, decontaminating, and thickening paper pulp from used paper, while providing the complementary function of clarifying the...  
WO/2000/074812A1
The invention relates to a degassing centrifugal apparatus such as a pump and to a process for pumping and degassing a fluid. The apparatus has a rotatable hollow rotor (20) connected to a stationary fluid inlet (14) at one end and a sta...  
WO/2000/074811A1
The invention relates to a degassing centrifugal apparatus such as a pump having energy recovery means and to a process for degassing a fluid. The apparatus has a rotatable hollow rotor (20) connected to a fluid inlet (14) at one end and...  
WO/2000/073579A1
The present invention relates to a screen cylinder (1) for dewatering pulp and to a method for producing the screen cylinder, comprising a screen plate (20) intended to surround a rotating screw which presses liquid through the said scre...  
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...  
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...  
WO/2000/065151A1
A screen cylinder (125) formed from discrete elements (128) (a wedge wire type screen cylinder) is constructed to accurately simulate the form of a substantially sharp edge milled screen cylinder having substantially the same contour. Th...  
WO/2000/064600A1
A screen cylinder or screening fibers of a paper stock suspension has a generally cylindrical body (55) with slots or openings (25) therein, and is provided with an end ring (30) and additional axial spaced reinforcing rings such as inte...  
WO2000050695A8
A method in connection with the manufacturing of paper or cardboard in one or more plies in order to achieve a paper or cardboard product with an even and high quality, whereby a fibre composition of a paper or cardboard waste, so-called...  
WO/2000/063487A1
Free flowing particles useful in absorbent articles are disclosed, including fibrous nits and methods of preparing fibrous nits. In one embodiment, fibrous nits are prepared from disperging cellulosic fibers in the presence of a nit cond...  
WO/2000/061861A1
Screening apparatus for separating fibrous suspensions, preferably pulp suspensions. The screening apparatus comprises a screen housing (1) with a screen chamber (4), which inward is defined by a rotary tubular screen means (5) with a kn...  
WO/2000/058549A1
Screening apparatus for separating fiber suspensions, preferably pulp suspensions, comprising at least two co-axially arranged screen means. A first tubular screen means (6) has outside itself a first screen chamber (7) with an outer def...  
WO/2000/056459A1
Refining element for refiners of disc-type for working fibrous material, where the refining element (10) is formed with a pattern of bars (11) with upper surfaces (13) and edges (14) and intermediate grooves (12). In the upper surfaces (...  
WO/2000/053845A1
A screening apparatus for separating fiber suspensions, preferably pulp suspensions, comprising a screen housing (1), centrally located in the screen housing (1), a stator (8) enclosed in a screen means (7). The screen means is rotary an...  
WO/2000/052255A2
A papermaking refiner (20) has two stationary disks (60, 64) mounted to the support structure of a fixed housing (34). A rotating disk (42) is mounted on a shaft (26) which extends through the housing. The support structure allows stock ...  
WO/2000/052260A1
A screening apparatus (2) for separating a liquid mixture has a chamber (8) and an opening (10) thereto, and a circular screen disc (20) covering said opening. During operation a first fraction of a liquid mixture, which enters the chamb...  
WO/2000/050695A1
A method in connection with the manufacturing of paper or cardboard in one or more plies in order to achieve a paper or cardboard product with an even and high quality, whereby a fibre composition of a paper or cardboard waste, so-called...  
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...  
WO/2000/050690A1
The invention concerns a method for filtering paper pulp using an apparatus comprising a rotor and a stator; one of the two, the filter (1), comprises perforations shaped like slots or holes and the other, the backwashing filter, compris...  
WO/2000/049222A1
The present invention relates to a method and apparatus for treating pulp in connection with a blow tank or a storage tank. A characteristic feature of the method and apparatus for treating pulp according to a preferred embodiment of the...  
WO/2000/043677A1
The present invention relates to a method and apparatus for pumping a material and a rotor used in said apparatus. Especially preferably the method, apparatus and rotor according to the invention are suitable for pumping thick, gas-conta...  
WO/2000/043590A1
A system, software program, and method for monitoring performance of a fiber processing apparatus that preferably is a disk refiner or a filter screen that analyzes operating data pertaining to the operation of the apparatus to determine...  
WO/2000/043127A1
The invention relates to a device and a method for chemically and physically separating solid materials from a suspension using flotation. A rotationally symmetrical flocculation/flow reactor (20) is provided with outlets in the lower pa...  
WO2000020091A8
A wedge wire for use in a wire type screen for screening papermaker's stock is formed with an elongated body (12) having an enlarged head (20) at the inlet surface of the screen. The head (20) is formed with tapered walls (30, 33) that c...  
WO/2000/038849A1
A papermaker's screen cylinder (10) has a screen body (11) formed as a helical strip (15) of sheet material being joined along marginal edges to form lock seams (18), and mounted on end rings (12, 13). The strip (15) may be perforated wi...  
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...  
WO/2000/029123A1
The conventional infeed head (22) and inverted cone (44) of a Uniflow cleaner are connected by a generally cylindrical channel dam segment (38) which has an annular inwardly extending channel dam (42). The narrow end of the inverted cone...  
WO/2000/029649A1
A disperser comprises a housing (1), a rotor (2) that is accommodated within the housing, a plurality of accelerating blades (5) disposed on both sides of the rotor. Input (4) and output (6) channels coaxially located on opposite sides o...  
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...  

Matches 601 - 650 out of 3,658