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Matches 1 - 50 out of 2,923

Document Document Title
WO/2022/082295A1
Disclosed is a refiner filling piece for a refiner having a rotor that rotates about an axis of rotation and cooperates with a stator to mechanically treat a pulp containing cellulosic fibers. The refiner filling piece is mountable to th...  
WO/2022/084580A1
A method and system for control of flows of in a pulp mill, comprising storing pulp from fiberline in a first pulp tower (10); directing the pulp from the first pulp tower (10) to pulp drying; storing white water from the pulp drying int...  
WO/2022/075541A1
A refiner plate according to the present invention disclosed herein comprises: a body which is divided so as to have a disc shape when combined; and a bar which is separately manufactured from the body, and is coupled via grooves continu...  
WO/2022/069433A1
The invention relates to a method for controlling a device for treating fibrous material (1), said device comprising a housing (2), in which a first treatment tool (3) and a second treatment tool (4) are arranged, wherein in each case th...  
WO/2022/062762A1
A production process for a cotton stalk-molded meal box pulp having byproduct fulvic acid, comprising: focusing on the removal of anionic waste sources such as pectin and hemicellulose in raw materials of cotton stalks, using cooking, de...  
WO/2022/063643A1
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 p...  
WO/2022/063450A1
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 p...  
WO/2022/043036A1
The invention relates to an arrangement and to a plurality of methods for controlling a device for treating a fibrous material, wherein the device has a housing, in which at least a first treatment tool (1, 3) and a second treatment tool...  
WO/2022/045940A1
The present invention relates to a gasket (1, 1', 1'') for sealing a drive shaft of a pulp washer, the gasket comprising a gasket body (10) having a central opening delimited by an inner edge (21) and the gasket body (10) also having an ...  
WO/2022/045942A1
The present invention concerns a sensor device (1) comprising a transducer (3) adapted to generate a magnetic field (MF), the sensor device (1) is configured to measure a beating gap (G) between a first (5) and a second (7) refining disc...  
WO/2022/043363A1
The invention relates to a device and a method for treating fibers. The device has a multipart housing in which at least one first treatment tool (1, 3) and a second treatment tool (2, 4) are arranged. The treatment tools (1, 2, 3, 4) ha...  
WO/2022/005490A1
A hydrocyclone having a mid-section having a longitudinal axis and a radius, and a fluid injection member releasably connected to the mid-section. The fluid injection member has a dilution passage therethrough and two spaced apart diluti...  
WO/2021/250315A1
A blade segment (4, 8) for a refiner (1) for refining fibrous material. The blade segment comprises a first (20) and a second (21) end edge and a first (22) and a second (23) side edge opposite to the first side edge (22) and a refining ...  
WO/2021/250320A1
A blade segment (4, 4a, 4b, 8, 8a, 8b) for a refiner (1) for refining fibrous material. The segment comprises a first (20) and a second (21) end edge and a first (22) and a second (23) side edge, the first (22) and second (23) side edges...  
WO/2021/245161A1
A blade segment (4, 8) for a refiner (1) for refining fibrous material. The blade segment (4, 8) comprises a first (20) and a second (21) end edge opposite to the first end edge in a direction of a longitudinal axis(LA) of the blade segm...  
WO/2021/234211A1
The present invention is directed to a screen plate (106, 301, 400, 600, 700), a segment for a screen plate and an apparatus for screening a suspension, wherein the screening is carried out using a screen plate (106, 301, 400, 600, 700) ...  
WO/2021/227249A1
Low-grammage writing paper and a preparation method therefor. The low-grammage writing paper comprises the following components in parts by weight: 50-90 parts of recycled office waste paper, 0-50 parts of recycled book and magazine pape...  
WO/2021/226693A1
The present invention relates to a process to produce highly microfibrillated cellulose (MFC) and nanofibrillated cellulose (NFC). The invention also refers to a microfibrillated/nanofibrillated cellulose produced according to such proce...  
WO/2021/229153A1
A blade element (4, 8) for a refiner (1) for refining fibrous material and a refiner (1) for refining fibrous material. The blade element (4, 8) comprises a first end edge (18) to be directed towards a feed of the fibrous material to be ...  
WO/2021/216663A1
A piece of natural plant material is subjected to one or more chemical treatments to remove substantially all lignin therefrom, thereby allowing the extraction of delignified, cellulose-based fibers. For example, the natural plant materi...  
WO/2021/213710A1
The invention relates to a method for producing a cover liner and/or back liner of a gypsum plaster board comprising a central layer which is arranged between the cover liner and the back liner and which contains gypsum. A fibrous materi...  
WO/2021/209315A1
The invention relates to an installation for purifying a fibrous suspension, having multiple hydrocyclones (1) arranged adjacent to one another in a row, which hydrocyclones each have at least one feed connection (2), one accepted stock ...  
WO/2021/204946A1
There is provided a method for manufacturing a two-dimensional material comprising the steps of: a) mixing a starting material with a liquid to form a suspension, and b) forcing the suspension to flow in a space between two opposing surf...  
WO/2021/206601A1
A pulp distribution compartment arrangement (20) comprises a distribution compartment (24) and a distributer screw (30). The distribution compartment has an exit opening (26) with an elongated shape with a main extension in a first direc...  
WO/2021/197805A1
The invention relates to a refiner for grinding fibrous materials, comprising a shaft (1), a rotor disc (2) fixedly connected to the shaft (1), and a shaft mounting (3), the rotor disc (2) being arranged between two stator discs (4, 5) a...  
WO/2021/180090A1
Provided are a pumping screen and a screening system having same. A pumping screen (200), comprising: a pump casing (210); a rotor impeller (220) accommodated in the pump casing; a drive shaft (230) passing through the pump casing and ro...  
WO/2021/175505A1
The invention relates to a device for the treatment of fibrous material in a working chamber (4) of a treatment housing (5), in which at least one rotating treatment tool (7) and a non-rotating treatment tool (6) are arranged, wherein th...  
WO/2021/155970A1
The invention relates to methods for producing a liner web from a fiber-material suspension, which is produced at least partially from waste paper as a fiber raw material, comprising the following steps: a. feeding waste paper into a pro...  
WO/2021/137524A1
According to the specification, aramid pulp and a method for manufacturing same are disclosed. The aramid pulp exhibits improved productivity and physical properties and excellent interfacial adhesion to different materials because oille...  
WO/2021/123504A1
The present invention relates to a process for manufacturing a fibre web, such as paper, board, tissue or the like. In the process bleached cellulose-containing fibres are suspended into process water in order to prepare a fibre stock, w...  
WO/2021/110188A1
The invention relates to a method having the following steps: Comminuting non-wood plant material such that it can be conveyed through a helical screw system; combining with a carbonate solution; mixing for 5 to 20 min, adding steam with...  
WO/2021/104691A1
The invention relates to a method for macerating a material to be conveyed, wherein the material to be conveyed is passed over a compression screw (2) and is macerated and compressed into a gas-tight and liquid-tight plug. The invention ...  
WO/2021/104747A1
The invention relates to an apparatus for treating fibrous material, which apparatus has a housing (5) in which a plurality of treatment tools (1, 2, 3, 4) of rotationally symmetrical shape are arranged coaxially to one another, and in e...  
WO/2021/101742A1
A cleaner system for removing solid debris and contaminants from a feed slurry includes a cleaner operable to separate a feed slurry into an accepted slurry and a reject slurry, the reject slurry including the solid debris and contaminan...  
WO/2021/097280A1
A system and method are provided for predictive control of brown stock treatment at a pulp mill. Various online sensors generate output signals representative of actual values for respective process characteristics, each of which are dir...  
WO/2021/082365A1
Disclosed is a method for papermaking high-bulk and high-gloss double-sided coated paper. The present invention involves using a sulphate softwood pulp, a bleached sulfate hardwood pulp and an alkaline peroxide mechanical pulp with a hig...  
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...  

Matches 1 - 50 out of 2,923