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WO/2000/032871A1 |
An apparatus and method is disclosed for dewatering a paper web. The apparatus includes a head box (12) capable of emitting a continuous, wet paper web (14). The wet paper web has an upper surface and a lower surface. A movable, closed l...
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WO/2000/031336A1 |
The invention relates to a pulp-drying apparatus, comprising a wet end, including at least a former section (2), which is supplied with pulp to be dried from a headbox (1) or the like, and a press assembly, comprising at least one press ...
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WO/2000/031337A1 |
The invention relates to a method and an apparatus for pulp web formation. The method comprises feeding pulp, having a dry content of about 1,5 %, from a headbox (2) into a wedge-shaped converging space (5) defined by two wires (3, 4) or...
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WO/2000/029668A1 |
A process and an apparatus for making paper by an aerodynamic method. An aerosuspension is fed onto a moving forming wire positioned at an angle relative to the aerosuspension flow. Then, an air component is removed by means of a suction...
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WO/2000/028138A2 |
A device for feeding fibrous aerosuspension onto a forming wire of a paper-making machine comprises a cylindrical body, a plurality of input channels, and an output channel. A rotor having a plurality of rotor blades attached thereto is ...
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WO/2000/028139A1 |
A process for forming a web by aerodynamic method comprises feeding an aerosuspension onto a moving forming wire positioned at an inclination angle $g(a) relative to the aerosuspension flow and removing an air component of the above aero...
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WO/2000/023649A1 |
The invention concerns an equipment and a method in a twin-wire former, in which a partly pre-drained or non-drained fibre stock is passed to between the forming wires of the web former in the vicinity of the former roll (11) or of a wat...
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WO/2000/020680A1 |
Method of producing a paper having a three-dimensional pattern of alternating raised and recessed portions which is given the paper in connection with impulse drying, at which the wet paper web is passed through at least one press nip (1...
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WO/2000/014330A1 |
A paper machine and a method for manufacturing a structured soft paper web are described, which machine has a wet section (2), a press section (3), a drying section (4) and a web-carrying clothing (22) running around a suction device (23...
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WO/2000/004232A1 |
A plant which serves to produce a nonwoven web of fibres (20) out of a fibrous material, such as cellulose pulp (6). The plant comprises a hammer mill (1) for defibrating the fibrous material and a forming head (2) for forming a web of f...
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WO/2000/001880A1 |
The invention relates to a former-press section (100, 110) of a paper machine and to a method of transferring a web from a former to a press section. Between the former section (100) and the press section (110) there is a pre-press zone ...
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WO/1999/066123A1 |
A suction breast roll former (10) is disclosed which includes a suction breast roll (14) and a headbox (12). The suction breast roll has a support surface (20) with a plurality of apertures (22) formed therein that are operatively connec...
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WO/1999/066122A1 |
The invention relates to an apparatus and a method for drying pulp. The apparatus for drying pulp comprises at least a wire section (2), which receives the pulp to be dried from a head box (1) or the like, as well as a press assembly, co...
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WO/1999/064672A1 |
The invention concerns a method for manufacture of paper, most appropriately for manufacture of glossy and porous paper for colour powder printing. In the method paper is manufactured by means of a paper machine. In the method the paper ...
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WO/1999/064671A1 |
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 pre-press (303, 304), a press section (300), in whc...
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WO/1999/060205A1 |
The invention concerns a twin-wire roll-gap former in a paper machine, which former comprises a covering wire (10) and a carrying wire (20). After the forming gap (G) confined to the area of the first forming roll (11), the twin-wire zon...
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WO/1999/054537A1 |
A fibre distributor (1) forms an air-laid fibre web (17) on a running endless forming wire (2) which, during operation, in principle is horizontal. The fibre distributor comprises a suction unit (14) positioned under the forming wire, a ...
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WO/1999/050498A1 |
The invention concerns a gap-roll former in a paper machine, comprising a headbox (30, 35, 36), which feeds a stock suspension jet (J) into the forming gap (G) defined by the forming wires (10, 20). Of the forming wires (10, 20), one wir...
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WO/1999/049131A1 |
An embossing belt for a paper machine, intended to run through a press section in the paper machine together with a fibrous web and produce an embossment thereof in the press section, and to transfer the embossed fibrous web from the pre...
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WO/1999/047095A1 |
An absorbent composite (10) that includes a fibrous matrix having absorbent material dispersed in bands (12) along the composite's length is disclosed. The bands define liquid distribution zones (14). On liquid contact, absorbent materia...
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WO/1999/047094A1 |
Methods for forming an absorbent fibrous composite containing absorbent material dispersed in bands through the composite and along the composite's length are disclosed. The methods generally include depositing a fibrous slurry on a fora...
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WO/1999/045194A1 |
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 (23) separating two stock channels in order to keep the stocks on each side of the separator vane...
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WO/1999/040256A1 |
The invention concerns a method for application of a layer of admixture in the web former unit of a board machine. The flow of fresh stock (11) is divided into at least two component stock flows (12¿1? and 12¿2?), of which flows, to at...
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WO/1999/040254A1 |
The present invention relates to a method for producing fibre panels, wherein said invention is mainly characterised in that a fibre suspension is dehydrated from both sides between a pair of sieves or felt units (10, 11). This invention...
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WO/1999/011861A1 |
A multiply paper web comprises a base ply (101) of a post-manufactured sheet such as reused old newsprint or reused office waste. An upper and/or lower ply (103) is bonded to the base ply by bonding agent (107) to cover any printing or c...
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WO/1999/009249A1 |
A multi-ply web forming method and apparatus are disclosed for forming a top ply onto a base ply. A fibre suspension jet is by means of a secondary headbox (21; 21', 26) delivered into a twin-wire roll nip created by two tensioned wires ...
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WO/1999/001609A1 |
The invention relates to a device for dehydrating solid-based liquid suspensions, specially fiber-based suspensions. The suspension is dehydrated between two bands (4, 5). A dehydration zone is configured as a wedge-shaped area. The inve...
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WO/1999/001610A1 |
The invention relates to a device for dehydrating solid-based liquid suspensions, specially fiber-based suspensions. The suspension is dehydrated between two bands (4, 5). A dehydration zone is configured as a wedge-shaped area. The inve...
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WO/1998/055686A1 |
Removing water from a wet paper web (44) includes the steps of (a) passing the web (44) and its supporting felt fabric (124, 170, 171, 200) above and in sliding contact with a surface of a meniscus separator unit (110, 111, 173) having a...
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WO/1998/048110A1 |
A process for paper or paperboard production comprises the steps of chopping up waste paper to reduce it to particles; laying down the particles into a uniform layer to form a mat; spraying the mat with water; submitting the mat to compr...
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WO/1998/048111A1 |
A forming apparatus (10) is disclosed for forming a web from a primary (12), a secondary (14), and a further (16) source of stock. The apparatus includes a looped fourdrinier wire (18) having an upstream (20) and a downstream (22) end. A...
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WO/1998/044192A1 |
The invention relates to a former provided with a water draining device which comprises a rib construction (23) or equivalent for doctoring water off the face of a wire (FY) or equivalent, a rise duct (29) through which the water to be r...
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WO/1998/044193A1 |
An apparatus for removing fluid from a fibrous web (30) in a papermaking machine having a machine direction and a cross machine direction, the apparatus comprising a plurality of generally parallel supports (50) extending in the cross ma...
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WO/1998/036126A1 |
The invention relates to a method and a device for the initial formation of a fibrous material layer. The inventive method is characterized in that at least one of the screening surfaces (12, 13) is accompanied, at least in the pulp susp...
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WO/1998/027273A1 |
A method for drying of paper, in which method the paper web (W) to be dried is passed from the press section into a forward dryer section (D�1?), in which the web (W) is dried from the side of its bottom face in dryer groups (R�1?......
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WO/1998/023812A1 |
The invention concerns a multi-layer headbox (10) for a paper/board machine, comprising stock inlet headers (J�1?, J�2?...) for the stocks (M�1?, M�2?...). The inlet headers communicate with a tube tank (11) and through the tube ...
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WO/1998/017860A1 |
The invention concerns a stock feed system for a multi-layer headbox (10). A stock concept (M�1?, M�2? ...) is passed into each inlet header (11, 12, 13) in the multi-layer headbox (10), which stock concepts have been produced out of...
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WO/1998/010138A1 |
The invention relates to a method for preventing rewetting of a web in a former. Water is removed from the web (W) by means of dewatering members. The web (W) is formed by forming members and forming rolls on support of a wire loop/loops...
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WO/1998/010139A1 |
An under felt inclined flat former for making multilayer or monolayer sheets of paper comprising a plurality of forming units arranged along a production line. Each of the forming units is supported on corresponding rigid supports and is...
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WO/1998/009020A1 |
The invention relates to a wet-end section of a paper machine with a head-box (1); a wire section (2) comprising 2 continuous screens - a first screen (40) and a second screen (42), forming together a twin-wire former on a part of their ...
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WO/1998/003727A1 |
A twin-wire gap former in a paper machine in which an outer wire and an inner wire are guided by guide rolls and by web forming members. The wires form a twin-wire zone which starts from a forming gap into which a slice part of a headbox...
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WO/1997/047803A1 |
A roll and blade gap former for a paper machine having first and second wires guided in a respective loop and defining a twin-wire forming zone, a forming gap in which the first and second wires converge before the twin-wire zone, a head...
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WO/1997/047804A1 |
A multilayer headbox for a papermaking machine which comprises a slice chamber having an upstream inlet and a downstream outlet. A tube bank comprising a plurality of straight tubes is located upstream of the slice chamber. In the slice ...
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WO/1997/045589A1 |
In order to meet higher demands for the properties of paperboard products an improved method and machine for the manufacture of paperboard are proposed according to the present invention in which a core (3) of a paperboard web is formed ...
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WO/1997/042374A1 |
In a twin wire former (20) a headbox (30) injects stock onto a forming wire (22) with which a second forming wire (24) is brought into gradual engagement. A forming shoe (40) directs the two wires along a path of increasing curvature, ab...
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WO/1997/013031A1 |
The invention concerns a method in a paper machine or equivalent, in which method water is removed out of the paper web (W) or equivalent by pressing, in which pressing stage the paper web or equivalent is pressed in at least one press n...
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WO/1997/008382A1 |
The invention concerns a former section provided with a twin-wire zone in a paper machine, comprising a carrying wire (20) and a covering wire (10). These wires (10, 20) for a twin-wire zone between them, in which zone there are web-form...
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WO/1997/003247A1 |
A paper machine for manufacturing a web of soft crepe paper, comprising a wet end (1) having at least one forming wire (4) for forming and supporting a web (7), and a drying section (2) with a through drying machine (13), a drying cylind...
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WO/1996/034145A1 |
The invention concerns a hood for a wire part and/or for a press section in a paper/board machine, comprising walls and a ceiling (10, 20), which form a closed hood around the wire part and/or the press section, air-conditioning being ar...
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WO/1996/032533A1 |
The invention concerns a forming arrangement in the sheet-forming region of a paper or cardboard machine having at least one rotating, continuous sieve (3) and at least one dewatering strip (4-7). The dewatering strip is inclined in the ...
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