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WO/2021/009988A1 |
Waste paper contains sticky foreign material, and the recovery and sending of this sticky foreign material to a paper-making process together with fiber is liable to lead not only to the sticky foreign material sticking to and contaminat...
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WO/2021/001751A1 |
The present invention relates to a refined cellulose fiber composition useful as a strength enhancing agent for paper and paperboard, wherein the refined cellulose fiber composition has a Schopper-Riegler (SR) number in the range of 80-9...
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WO/2020/263296A1 |
A refining member including a refining body with a refining surface including first and second refiner bars separated by first and second refiner grooves. The first and second refiner bars extend from respective first and second radially...
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WO/2020/244938A1 |
A pulp treating arrangement (10) comprises a pulp treating apparatus (100), which receives first pulp (150), the first pulp (150) including at least one of the following: virgin pulp (152) 5and recycled pulp (154); performs a processing ...
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WO/2020/247110A1 |
A hub and a member, the member having a central opening. The hub is received in the member central opening. The hub has a center, and a hub axis through the center. The hub also has a splined exterior with a plurality of splines, each sp...
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WO/2020/219390A1 |
A nonwoven sheet can comprise a plurality of cellulosic pulp fibers and a plurality of synthetic polymeric fibers. The cellulosic pulp fibers can include a plurality of cedar pulp fibers that have a length weighted average fiber length o...
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WO/2020/219637A1 |
A screen cylinder includes a profiled bars aligned longitudinally and coupled to at least one support ring. Each of the profiled bars includes an outer surface facing away from the support ring, a first slot surface extending from the ou...
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WO/2020/193003A1 |
The invention relates to a pressure screen for cleaning a fibrous stock suspension (1), comprising a screen element (3) which is of rotationally symmetrical configuration about a screen axis (2) and divides the pressure screen into an in...
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WO/2020/187498A1 |
The invention relates to a method for producing a cylindrical screen device (10) with a plurality of profiled bars (12). The profiled bars (12) are inserted parallel to one another and to the cylinder axis into open-border recesses (16) ...
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WO/2020/188112A1 |
There is provided a method of producing a highly refined pulp, comprising the steps of: providing a pulp; subjecting the pulp to a first conical refining step in at least one conical refiner comprising refining plates having a bar width ...
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WO/2020/185140A1 |
The invention relates to a double disc pulp refiner (10) comprising a first refining disc (11) and a second refining disc (12), the first refining disc being arranged at a feed end of the refiner (10) where lignocellulosic material (M) i...
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WO/2020/181886A1 |
A method for producing highly water-resistant box board paper, comprising the following steps in sequence: crushing, sand removal, first-stage coarse screening, sizing screening, slurry preparation, surface layer preparation, liner layer...
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WO/2020/180225A1 |
A system(1) for refining lignocellulosic biomass material(A) comprising a presteaming bin(2), a dewatering device (3), apreheater (4), a defibrator (9) comprising at least one refining zone (14) wherein steam is generated during refining...
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WO/2020/169236A1 |
The invention relates to a plate segment (2) for refining aqueously suspended fibrous material (1) in a refining gap (3) delimited by two treatment surfaces, which rotate relative to one another and are formed by plate segments (2). The ...
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WO/2020/169884A1 |
A processing plate (4, 12) for a device (1) for mechanically processing lignocellulose containing fibrous material. The plate comprises inner and outer peripheries (22, 23) and a processing surface (9, 17) provided with projecting parts ...
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WO/2020/163459A1 |
This disclosure relates to refiner plate segments having feeding grooves having a first width at a first end of the feeding groove, wherein the first end of the feeding groove is disposed closer to an inner diameter of the refiner plate ...
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WO/2020/151951A1 |
The invention relates to a method for controlling a device for processing high-consistency fibrous material (1), comprising a housing (2), in which a first treatment tool (3) and a second treatment tool (4) are arranged, wherein in each ...
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WO/2020/146581A1 |
A reject chamber for use with a hydrocyclone for separating a fiber suspension into a heavy fraction substantially containing heavy contaminants and a light fiber fraction substantially containing fibers, the reject chamber having an int...
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WO/2020/133856A1 |
The present invention belongs to the field of paper technologies and new materials, and specifically relates to a method for preparing a biomechanical primary color pulp from wheat straw. The present invention involves first pre-treating...
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WO/2020/126147A1 |
The invention relates to a refining arrangement for refining aqueously suspended pulp between two refining surfaces, which form a refining gap (1) and rotate relative to each other and are formed by refining strips (2) and grooves (3) ex...
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WO/2020/120280A1 |
A technique is proposed by which a paper raw material can be more efficiently sorted while a screen basket is reduced in size. A screen basket 10 according to the invention comprises perforated plates 20 for separating foreign bodies fro...
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WO/2020/114657A1 |
A method for operating a facility for producing fibrous material web, in particular a paper or cardboard web, wherein the facility comprises a material preparation system for providing a fibrous suspension and a headbox for applying the ...
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WO/2020/109667A1 |
The present invention relates to an arrangement and a method for controlling a gas flow separated from a suspension of medium consistency pulp. The pulp is treated in a pulp treatment apparatus comprising at least a first pump and a seco...
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WO/2020/100980A1 |
Provided is a method for producing anion-modified cellulose nanofibers at low power consumption. The anion-modified cellulose nanofibers are produced through the defibrillation of an anion-modified cellulose using a cavitation jet device...
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WO/2020/094322A1 |
The invention relates to a rotor for a heating unit comprising a rotor housing and a rotatable rotor shaft, which is provided in the rotor housing and has add-on components for influencing a stock suspension to be heated, which flows thr...
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WO/2020/096504A1 |
The present invention concerns a fiber concentration profile measuring apparatus (1) comprising a plurality of conductor bodies (9, 509), configured to be coupled to a primary AC power source (17) comprising an impedance measuring unit (...
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WO/2020/076700A1 |
The problem of increased energy usage in refiners over the working life of a refining assembly is mitigated by the use of a refiner plate segment having a refiner side and a back side distally disposed from the refiner side, refiner bars...
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WO/2020/063906A1 |
Disclosed is an intelligent pressure screen, comprising: a pressure screen body (6), a pressure screen rotor driving motor (14), a slurry inlet pipeline (4), a slurry inlet pump (1), a slurry inlet pump driving motor (3), a good slurry o...
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WO/2020/062604A1 |
A grinding disc clearance servo control device and method for a disc-type grinding system, which relates to the technical field of grinding disc clearance control of disc-type grinding systems. The device comprises a disc-type grinder (2...
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WO/2020/057851A1 |
The invention relates to a control method for a device for cleaning a fiber material suspension (1), having at least one chamber (2) for the fiber material suspension (1) and a heavy-fraction separator (3) connected thereto. The discharg...
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WO/2020/048758A1 |
The present invention relates to a method for preparing grass fibres having the steps: a) providing grass fibres having a predefined fibre length distribution or average fibre length; b) suspending the grass fibres in water at a predefin...
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WO/2020/037549A1 |
Aramid fiber far-infrared emitting paper and a preparation method therefor. Para-aramid chopped fibers and para-aramid pulp fibers are used as paper-based functional materials, which have the excellent characteristics of high specific st...
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WO/2020/038823A1 |
The invention relates to a method for forming and treating a fibrous material suspension (1), suitable for producing paper webs or paper web layers, made from pulp and water, wherein the fibrous material suspension (1) is guided from a p...
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WO/2020/038979A1 |
The invention relates to an apparatus (1) for fractionating a suspension containing elongated particles, comprising a plurality of substantially tubular fractionating devices (1) and at least one distributor (12) that can be connected to...
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WO/2020/033659A1 |
A fiber blend includes a first amount of wood pulp fibers refined in an amount of at least about 150 kWh per metric ton of gross refining energy, and a second amount of wood pulp fibers refined in an amount of at most about 10 kWh per me...
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WO/2020/022941A1 |
There is disclosed a refiner segment (10) adapted to be attached to a refiner disc (30) in a refiner (100) of lignocellulosic material, said refiner segment (10) being provided with a plurality of spaced apart bars (20,) extending in a d...
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WO/2020/015883A1 |
The invention relates to a device (1), in particular a refiner, and to a method for handling fibres (3) of a mixture of substances (2) containing fibres (3), wherein the device comprises at least one outlet element (11) for the passage o...
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WO/2020/007499A1 |
The invention relates to a screening device, which is preferably in the form of a screening basket. Such screening devices are used, for example, in classifying processes in the paper industry. Screening slots or screening gaps are forme...
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WO/2020/005131A1 |
The present invention relates to a knot re-cooking arrangement for batch cooking of pulp, comprising: a batch digester (4) for cooking wood chips in a Kraft process to produce pulp, a knot removal device for removing knots (10) from pulp...
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WO/2020/005289A1 |
A system for treating cellulosic fibers to improve paper, board and tissue quality; the system involves splitting fibers into an original portion having original fibers and a refinable portion. The refinable portion may further be fracti...
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WO/2019/235987A1 |
The present disclosure provides a refiner segment (1) for refining of lignocellulosic material. The refiner segment (1) have a surface comprising a plurality of bars (10j) extending along a direction between an inner periphery (17a) of t...
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WO/2019/219299A1 |
The invention relates to a method for producing a surface-treated fibrous web (33), in particular a web of cardboard or packaging paper, at least comprising a material preparation stage (4), at least one headbox (24), a forming section (...
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WO/2019/199215A1 |
Disclosed is a refiner segment (1) that is adapted to be attached to a refining disc (30) of a refiner (100) of lignocellulosic material. The refiner segment (1) comprises a number N, N ≥ 2, of bars (10) and a number, M ≥2, of dams (...
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WO/2019/197049A1 |
The invention relates to a filter sector (1) of a filter disc (3), which rotates about a hollow shaft (2), for a disc filter for separating liquids from a suspension, in particular from a fibrous material suspension (4), consisting of a ...
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WO/2019/200348A1 |
A process for improving high aspect ratio cellulose filament blends comprising the steps of: a) providing a blend of cellulose nano-filaments or blend of cellulose micro-filaments; b) diluting the blend of cellulose nano-filaments or the...
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WO/2019/189615A1 |
Provided is a method for manufacturing paper or paperboard, the method including a step for adding chemically modified pulp to raw pulp and preparing a mixed pulp, a step for refining the mixed pulp, a step for preparing a paper material...
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WO/2019/176465A1 |
This method for producing a high-transparency cellulose nanofiber dispersion has a preliminary defibration step for beating chemically modified cellulose using a single disk-type refiner, and a main defibration step for defibrating pulp ...
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WO/2019/166912A1 |
The invention discloses a method to form a composition, which method includes fibrillating fibers to form MFC in the presence of an alkali-metal silicate whereby an MFC and silicate mixture is formed The presence of alkali-metal silicate...
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WO/2019/164433A1 |
There is disclosed a refiner segment (10) for a refiner (1) of lignocellulosic material. The refiner segment (10) is part of a refiner disc (100) that comprises a center area (11). The refiner segment (10) comprises a number H, N ≥2, o...
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WO/2019/164937A1 |
A flinger or refiner plate for a mechanical refiner including deep notches or holes in feeder bars of the flinger plate and/or open passages or holes in bars of the refiner plate. The open passages and/or holes in the bars significantly ...
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