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Matches 1 - 50 out of 3,801

Document Document Title
WO/2021/061723A1
Paper products can comprise a first plurality of fibers that are hardwood fibers and a second plurality of fibers that include softwood fibers and surface enhanced pulp fibers (SEPF). The paper product can include one or more first fiber...  
WO/2021/061747A1
A method of making a paper product can comprise making one or more sheets at least by, for each of the sheet(s), forming a web from one or more furnishes that comprise fibers dispersed in water. The fibers of the furnish(es) can comprise...  
WO/2021/061633A1
This disclosure relates to an apparatus for a counter-rotating mechanical refiner configured to mitigate the problems of feeding variations, load variations, high energy consumption due to poor feeding efficiency, low pulp quality, and r...  
WO/2021/061718A1
A method of making a market pulp can include separating a slurry comprising a plurality of pulp fibers into at least first and second pulp feeds. The first pulp feed can be refined at least by, for each of one or more mechanical refiners...  
WO/2021/052652A1
The invention relates to a method for cleaning an impurity-containing fibrous stock suspension (1) which is formed at least partially from waste paper with at least two closed sorters (2, 3, 4, 5) which are arranged in series and in whic...  
WO/2021/043609A1
The aim of the invention is to provide technology which saves space and can continuously process a large quantity of raw paper production materials. The technology is a multistage screening device (1) which has a screening device (10) th...  
WO/2021/043610A1
For providing technology which relates to a screen device and by way of which papermaking raw materials can be sorted effectively into papermaking raw materials which comprise high quality fibres and papermaking raw materials which compr...  
WO/2021/032910A1
The present invention relates to a screen cylinder that is particularly suitable for screening, filtering, fractionating, or sorting cellulose pulp or fibre suspensions of the pulp and paper industry or other similar suspensions. The pre...  
WO/2021/032736A1
The invention relates to a method for preparing grass fibers, having the steps of providing a pulp suspension made of a specified content of at least two pulp types, wherein the first pulp type is grass fibers, and the second pulp type i...  
WO/2021/022693A1
Provided is a waste paper pulping and fine sieve tailing treatment process, comprising the following steps: (1) waste paper pulping tailing is fed into a transition tank 1, and then passes through first-stage fine sieve to obtain first-s...  
WO/2021/014206A1
Methods for preparing aqueous suspensions comprising microfibrillated cellulose, and optionally inorganic particulate material, with increased tensile properties, and methods for selecting a fibrous substrate comprising cellulose for pre...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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...  
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) ...  
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 ...  
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...  
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...  
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...  
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 ...  
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 ...  
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 ...  
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 ...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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 (...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  

Matches 1 - 50 out of 3,801