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7578906 |
Headbox and stock delivery system for a papermaking machine
A headbox including a stock dilution profiling arrangement and associated stock delivery systems are provided, which together deliver to the forming section of a papermaking machine a uniform stock...
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7507314 |
Vane intended for a headbox of a paper machine and method for ensuring the straightness of a vane
A vane intended for a headbox of a paper machine or equivalent is moistened and enclosed in a vapor-proof package to ensure the straightness of the vane. At least a portion of the vane is made of a...
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7504003 |
Arrangement in a headbox
An arrangement in the headbox of a paper or cardboard machine has a pulp suspension feed system distributing the suspension over the width of the headbox. At least one first flow resistance...
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7485206 |
Apparatus in connection with a headbox of a paper machine or equivalent
A headbox apparatus of a paper machine or equivalent has a body ( 11 ). Dilution water (arrow L 2 ) is conducted through at least two rows of ducts ( 12 a 1 , 12 a 2 . . . ) into each body mixing...
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7429307 |
Method of forming a fibrous web
In a method of forming a layered fibrous web, the method includes the steps of leading at least two different fiber suspensions through a head box ( 10 ), separating the fiber suspensions from each...
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7416636 |
Method and apparatus for foam forming
The present invention relates to a method and apparatus for foam forming, wherein fibrous foam suspension is introduced from the head box ( 78, 178 ) of a production machine to the web forming...
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7381295 |
Pulp fractionation using centrifugal cleaners and power screens with multi-layer headbox and deaeration tank
Virgin stock is conducted to a paper or board machine and further to a centrifugal cleaner installation ( 12 ) into its first centrifugal cleaner step ( 12 a 1 ). From the first centrifugal cleaner...
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7166193 |
Method of ensuring flatness of a vane in a headbox by means of a mounting arrangement, headbox with such a mounting arrangement, a mounting arrangement and vane therefor
A method of ensuring the flatness of a vane that is mounted in a headbox by means of a mounting arrangement including engagement dowels for cooperation with a downstream support wall of a...
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7067040 |
Headbox of paper machine or such
A headbox ( 10 ) of a paper machine or such includes a bypass manifold (J 1 ), from which the pulp is conducted by way of pipes ( 11 a 1.1 , 11 a 1.2 . . . 11 a 2.1 , 11 a 2.2 . . . ) of pipe...
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7001488 |
Method of and apparatus for distribution of paper stock in paper or board making machinery
An inlet chamber is connected to a nozzle section by way of a plurality of tubes. Diluting liquid for mixing with paper stock flowing through one or each of said tubes is fed into the tube via...
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6962647 |
Headbox for a paper machine, board machine, pulp machine or equivalent
A headbox, for example, in a pulp or board machine, is suitable for high basis weights which are over 400 g/m 2 and for high fiber suspension consistencies which are in a range of 2–5%. The...
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6962646 |
Multi-layer headbox
Multi-layer headbox for a paper machine that includes a plurality of nozzle chambers having outlet gaps located at nozzle chamber ends. Each of the plurality of nozzle chambers are assigned to...
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6902651 |
Tube bank structure, and flow tube producing method
The invention provides tube bank structure and a method of manufacturing a flow tube, which can improve the stabilization of the flow of stock in the tube bank of the headbox of a papermaking...
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6875312 |
Method for fluidisation of pulp flow in the headbox of a paper machine or such and control equipment used in the fluidisation
A method for fluidisation of a pulp flow in the headbox of a paper machine or such. The characteristics of the pulp flow are affected in the headbox's fluidiser ( 14 ) in one step only, whereby the...
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6841040 |
Method and device for feeding chemicals into a fibre suspension
In the short circulation of a paper machine, a chemicals flow (F 1 ) is fed into a fibre suspension flow in connection with a pipe expansion comprising a first pipe ( 1 ) and a second pipe ( 2 )...
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6821392 |
Headbox sealing device
A pulp former's sealing blades extend between the headbox slice and twin forming wires and are bonded and/or pinned to blade supports which mount the blades to the slice. The blade supports have...
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6821390 |
Process and device to control quality parameters in paper, tissue and pulp dewatering plants
Apparatus and process for controlling the basis weight cross-profile, the formation, the fiber direction and other quality parameters of a pulp sheet after the headbox in a dewatering plant. The...
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6770171 |
Method and system for controlling headbox in a paper/board machine
A paper/board machine headbox ( 10 ) has a stock inlet header (J), a tube bank ( 11 ), a turbulence generator ( 13 ) and a slice opening ( 14 ) which is provided with a profile bar. The headbox (...
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6761801 |
Lamella of a headbox of a paper, cardboard, or tissue machine
Lamella and headbox of a web production machine. The lamella is formed of at least one high-performance polymer. The at least one high-performance polymer includes high stability, high heat...
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6736938 |
Headbox and arrangement and method for mounting a vane thereof
A vane is mounted to a turbulence generator in a headbox by a mounting arrangement that includes an assembly bar that is rigidly connected to an anchoring element of the turbulence generator. The...
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6679974 |
Procedure and means for generating turbulence in stock suspension flow
In a paper machine headbox, a stock suspension flow passes through turbulence pipes (14 a n ) and is distributed into superimposed layers. Stepped expansion spots ( 16 ) of the flow cross-section...
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6610175 |
Layered fiber structure in paper products
Methods and apparatus to enhance paper and board forming qualities with insert tubes and/or a diffuser block in the paper forming machine headbox component which generates vorticity in the machine...
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6602388 |
Process for forming headbox for a machine
Process of forming a headbox for a machine, which includes arranging a plurality of headbox channels into rows and columns, positioning a lamella between adjacent rows, fixing an end of the lamella...
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6544387 |
Multi-layer headbox for a paper/board machine
A multi-layer headbox for a paper or board machine including stock inlet headers each providing one stock and coupled to a tube bank which in turn is coupled to a respective intermediate chamber....
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6521095 |
Composite vane hinge in a headbox
A bracket of graphite epoxy has a cylindrical portion which hingedly fits within a dovetail groove extending in the machine direction across the injection face of a papermaking headbox. The bracket...
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6491793 |
Arrangement for fastening a turbulence vane to a headbox
An arrangement for fastening a turbulence vane to headbox where in the headbox, a groove running parallel to the width of the headbox is formed in a plate delimiting a slice chamber, in order to...
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6475345 |
Device for feeding a pulp suspension with eccentric shaft adjustment
A device for feeding a pulp suspension to a tissue machine includes a headbox having top and bottom lips defining a slice gap forming a free flow jet of the pulp suspension. The device also...
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6471828 |
Headbox
Headbox for a machine and process for forming the same. The headbox includes a plurality of channels arranged in rows that extend across a width of the machine and in columns substantially...
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6464833 |
Method of controlling basis weight profile using multi-layer consistency dilution
The stock approach piping to a multi-layered headbox can be modified to include a dilution water header that independently supplies dilution water, such as whitewater, to multiple CD segments or...
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6444088 |
Foam process web production with foam dilution
A nonwoven web of fibrous material is made by the foam process using a manifold of a particular construction. The manifold has a casing with first and second opposite ends including an inlet for a...
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6440272 |
Device for mixing stock suspensions
Process and device for the mixing of suspensions with possibly different natures and/or compositions in the stable section of a paper machine. In the process, a suspension, particularly of the...
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6432275 |
Headbox of a paper/board machine by whose means the basis weight of the web can be regulated
The invention concerns a headbox for a paper/board machine by whose means the basis weight of the web can be regulated. The headbox comprises a stock inlet header (J l ), which becomes narrower...
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6428655 |
Integrated paper machine
The invention concerns an integrated paper machine, which comprises, in the running direction of the web, a multi-layer headbox ( 100 ), a gap former ( 200 ), in which there is at least one...
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6406595 |
Methods and apparatus to enhance paper and board forming qualities
Methods and apparatus to enhance paper and board forming qualities with insert tubes and/or a diffuser block in the paper forming machine headbox component which generates vorticity in the machine...
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6372092 |
Headbox and process for supplying a material suspension
Headbox of a paper machine and a process of supplying a material suspension, The headbox includes at least one material suspension supplying system, and a headbox nozzle that includes a first...
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6368464 |
Device for feeding a pulp suspension to a dewatering installation
The invention refers to a device for feeding a pulp suspension to a dewatering installation, particularly for a tissue machine. It is mainly characterized by one or several one-piece, wedge-shaped,...
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6368460 |
Method and apparatus to enhance paper and board forming qualities
Methods and apparatus to enhance paper and board forming qualities with insert tubes and/or a diffuser block in the paper forming machine headbox component which generates vorticity in the machine...
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6368462 |
Headbox for a paper or board making machine
The invention relates to a headbox ( 10 ) for a paper/boardmaking machine. The headbox ( 10 ) including a stock flow header ( 11 ) and, following the stock flow header, a piping system such as an...
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6352616 |
Jointless lamellae for a headbox
Headbox that includes a turbulence generator including a plurality of essentially parallel rows of pipes and a jet including of an upper lip and a lower lip arranged to form a jet space and a jet...
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6319366 |
Headbox for feeding a pulp suspension to a dewatering installation
The invention refers to a headbox device for feeding a pulp suspension to a dewatering installation, particularly for a tissue machine. It is mainly characterized by an eccentric shaft being...
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6303004 |
Stock inlet
Stock inlet of a paper machine that includes at least one stock suspension supply, a diffusor block having a plurality of tubular elements, dividing elements which extend across a width of the...
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6294051 |
Method for improving the edge strength of a fibrous mat
An apparatus and method for forming a thin fibrous mat, such as a tissue sheet, with improved edge strength is disclosed. The apparatus includes a headbox having a top, a bottom, a pair of lateral...
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6264796 |
Headbox diffuser
A diffuser section for use in a headbox, the diffuser section comprising a plurality of hollow diffusers, each diffuser having an outlet and an inlet that is shaped as a polygon. The plurality of...
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6235159 |
Convergent flow headbox
A headbox having a tube bank composed of a multiplicity of tubes arranged in machine direction rows of superpositioned tubes. The tubes extend from an unitary outlet wall of the headbox and are...
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6227696 |
Radial diffuser
A radial diffuser having insert rings for providing microturbulence to a paper fluid stock suspension and uniformly discharging the fluid stock via a plurality of tubes around the perimeter of the...
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6214170 |
Process for cleaning or maintaining the cleanliness of the low-consistency branch of a headbox system
Process for cleaning or maintaining the cleanliness of a low-consistency branch of a stock density-regulated headbox system including a constant part of a paper or cardboard machine having at least...
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6200417 |
Process and device for mixing stock suspensions
Process and device for the mixing of suspensions with possibly different natures and/or compositions in the stable section of a paper machine. In the process, a suspension, particularly of the...
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6165324 |
Multi-layer headbox and separator vane therefor
A headbox for discharging a jet consisting of one or more stock layers to a forming zone in a former comprising at least one separator vane separating two stock channels in order to keep the stocks...
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6146501 |
Cross-machine direction stiffened dividers for a papermaking headbox
Improvements in the internal dividers of a papermaking headbox are provided by stiffening the dividers only in the cross-machine direction. These cross-machine stiffened dividers provide for a...
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6136152 |
Process and device for controlling the consistency and fiber orientation profile in a headbox
A headbox for a paper machine and a process for controlling consistency of the slurry. The headbox includes a turbulence insert having an inlet end and a distributing pipe having a connecting area....
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