EP3535453B1 - Vorrichtung und verfahren zur herstellung einer faserstoffbahn - Google Patents

Vorrichtung und verfahren zur herstellung einer faserstoffbahn Download PDF

Info

Publication number
EP3535453B1
EP3535453B1 EP17784944.5A EP17784944A EP3535453B1 EP 3535453 B1 EP3535453 B1 EP 3535453B1 EP 17784944 A EP17784944 A EP 17784944A EP 3535453 B1 EP3535453 B1 EP 3535453B1
Authority
EP
European Patent Office
Prior art keywords
white water
nozzle
suspension
metering
turbulence generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17784944.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3535453A1 (de
Inventor
Markus Häußler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP3535453A1 publication Critical patent/EP3535453A1/de
Application granted granted Critical
Publication of EP3535453B1 publication Critical patent/EP3535453B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/022—Means for injecting material into flow within the headbox
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/028—Details of the nozzle section
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/82—Pulp catching, de-watering, or recovering; Re-use of pulp-water adding fibre agglomeration compositions
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
    • D21F9/006—Complete machines for making continuous webs of paper of the twin-wire type paper or board consisting of two or more layers

Definitions

  • the invention relates to a device for producing a fibrous web from several layers, comprising a multilayer headbox with an inner turbulence generator extending over the width of the multilayer headbox and at least two turbulence generators for training, each directly adjacent to the inner turbulence generator and each extending over the width of the multilayer headbox of at least three suspension layers and with a nozzle adjoining the turbulence generator with an upper nozzle wall and with a lower nozzle wall, the nozzle walls being arranged to converge towards one another and forming an outlet gap to form a suspension jet and with two separating lamellae arranged in the nozzle to separate the inner suspension layer from the adjacent suspension layers on at least part of the nozzle length, and further comprising supply systems for supplying suspensions to the respective turbulence generators, the supply system for the inner turbulence generator having a white water chest which has at least one white water pump, a white water classifier, and a first cross distributor a white water line is connected, the first cross distributor being connected to
  • the document DE3112972 A1 discloses a three layer multilayer headbox.
  • the middle layer is fed by white water, while the neighboring outer layers are formed by fiber suspensions.
  • the layers are separated from each other in sections by flexible partitions in a nozzle following the turbulence generators.
  • the white water is taken from a white water vessel and fed to the middle layer by a feed pump.
  • the disclosure document DE102008000778 A1 describes a multi-layer headbox with, for example, three layers, with a white water layer separating two layers adjacent to it, each made of a fiber suspension.
  • Auxiliary material dosing devices are provided for dosing, for example, retention agents into the white water layer. Dosing can take place between the transverse distributor and the turbulence generator.
  • the document EP2784214 B1 shows a multi-layer headbox, with one layer being fed with white water by a white water pump.
  • a white water pump To improve the quality of the paper, ground fibers and auxiliary materials are metered into the white water suspension before the white water pump.
  • the white water pump is intended to improve the mixing of the auxiliary material with the white water.
  • the known devices have the disadvantage that the individual layers of the fibrous web produced have, on the one hand, too low and uneven paper strength, in particular splitting strength, and, on the other hand, poor covering quality of the layers.
  • a device for producing a fibrous web from several layers, comprising a multilayer headbox with an inner turbulence generator extending over the width of the multilayer headbox and at least two turbulence generators directly adjacent to the inner turbulence generator and each extending over the width of the multilayer headbox for training purposes of at least three suspension layers and with a nozzle adjoining the turbulence generator with an upper nozzle wall and with a lower nozzle wall, the nozzle walls being arranged to converge towards one another and forming an outlet gap to form a suspension jet and with two separating lamellae arranged in the nozzle to separate the inner suspension layer from the adjacent suspension layers on at least part of the nozzle length, and further comprising supply systems for supplying suspensions to the respective turbulence generators, the supply system for the inner turbulence generator having a white water chest which has at least one white water pump, a white water classifier, and a first cross distributor a white water line is connected, the first cross
  • an auxiliary material metering device for generating a metering volume flow for metering an auxiliary substance into the white water line is provided and that the Auxiliary material metering device is designed such that the metering volume flow can be controlled and/or regulated to adjust the mixing quality between white water and metering volume flow.
  • the advantage of the solution lies in a uniform and controllable or adjustable mixing between white water and auxiliary material for supplying the inner suspension layer. This can be optimized for different operating situations of the headbox, such as for different volume flows and/or speeds of the suspension jet.
  • the auxiliary substance is metered in before the white water pump and in particular in different operating situations, insufficient mixing of the auxiliary substance can occur. This can lead to the formation of strands of the auxiliary substance in the white water. This inadequate mixing quality can lead to an inhomogeneous separation of the two adjacent suspension layers.
  • the inner suspension layer consists exclusively of white water and one or more auxiliary substances.
  • the white water contains few fibers and, depending on the type of paper produced, fines and fillers.
  • the suspension layers adjacent to the inner suspension layer contain, in addition to fillers and fines, essentially fibrous materials, such as cellulose fibers, recycled fibers, etc., to form the fibrous web.
  • the inner suspension layer forms, on the one hand, a separating layer between the suspension layers adjacent to it in order to keep mixing as low as possible before and during sheet formation in the forming zone and, on the other hand, it serves to place auxiliary materials, such as starch, between the two adjacent to the inner layer To bring suspension layers and to increase the strength, in particular the cohesion of the adjacent layers of the finished fibrous web.
  • the excipient may include several different types of excipients.
  • auxiliary substances can be selected from the following group individually or in combinations: starch, in particular cationic starch, to increase strength; Polymers, especially long-chain polymers as retention agents; Retention aid systems comprising several components; wet strength agents;
  • an auxiliary substance pre-dilution line with the auxiliary substance metering device is provided for diluting the auxiliary substance with white water.
  • the auxiliary pre-dilution line is preferably connected to the white water line for the internal turbulence generator in the area after a white water classifier.
  • a valve can be provided in the auxiliary pre-dilution line.
  • the pre-dilution of the excipient can improve the mixing of the excipient with the white water.
  • auxiliary pre-dilution line can be connected directly or indirectly to the white water tank.
  • the multilayer headbox has a dilution water system with a second transverse distributor for the sectional, controllable and/or regulatable metering of dilution water across the width of the multilayer headbox into at least one suspension layer for adjusting the cross-sectional profile of the mass per unit area of the fibrous web produced.
  • the dilution water is preferably metered into at least one suspension layer adjacent to the inner suspension layer.
  • auxiliary material with the white water of the inner suspension layer allows greater scope for adjusting the cross-sectional profile of the mass per unit area through local dilution. If strands form, however, there is a risk that both effects will overlap and this can lead to disruptions in the quality of the fibrous web.
  • the white water line is connected after the white water pump and after the white water classifier via a dilution water line to the second cross distributor of the dilution water system.
  • the upper nozzle wall and preferably the lower nozzle wall of the nozzle has an aperture.
  • the advantage is an almost symmetrical final geometry of the nozzle through which the suspensions flow without disadvantageous deflections.
  • the nozzle is free of additional fins. So only the separating slats are provided.
  • the nozzle has at least one intermediate lamella.
  • the at least one intermediate lamella is the same length or longer than the shortest separating lamella. This results in an advantageous layer structure of the fibrous web.
  • the at least one of the two separating slats can run through the exit gap.
  • the multilayer headbox is followed by a forming zone with at least one endlessly rotating dewatering screen for receiving the suspension jet, and with a dewatering element, the dewatering element having a covering that touches the dewatering screen and drainage openings for removing the resulting white water are formed in the covering , and that the drainage openings are designed and arranged in such a way that the pressure pulses acting on the suspension are minimized. This prevents uneven mixing of the inner suspension layer with the adjacent suspension layers.
  • the areas that is to say the cross-sectional areas of the drainage openings, are zonally different and increasing in the running direction of the endlessly rotating drainage screen.
  • the cross-sectional area is therefore smaller than in a second zone, which adjoins the first zone in the running direction of the rotating dewatering sieve.
  • the drainage element is sucked by a suction device.
  • the suction device can be a vacuum system or a suction siphon. This allows the drainage intensity to be adapted to the operating situation.
  • the object is also achieved by a method according to claim 15 for producing a fibrous web from several layers using a device.
  • the device comprises a multi-layer headbox with an inner turbulence generator extending across the width of the multi-layer headbox and at least two turbulence generators directly adjacent to the inner turbulence generator and each extending over the width of the multi-layer headbox to form at least three suspension layers and with one attached to the turbulence generator adjoining nozzle with an upper nozzle wall and with a lower nozzle wall, the nozzle walls being arranged to converge towards one another and forming an outlet gap to form a suspension jet and with two separating lamellas arranged in the nozzle to separate the inner suspension layer from the adjacent suspension layers on at least part of the Nozzle length, and further comprising feed systems for feeding suspensions to the respective turbulence generators, wherein in the feed system for the inner turbulence generator, white water is guided via a white water line from a white water tank via at least one white water pump, via a
  • Dosing volume flow can be controlled and/or regulated to adjust the mixing quality between white water and dosing volume flow.
  • Figure 1 shows a device 1 for producing a fibrous web from three layers for a paper machine.
  • the multi-layer headbox 2 has an inner turbulence generator 7.8, which extends across the width of the multi-layer headbox 2, and two turbulence generators 7.10, 7.11, which are directly adjacent to the inner turbulence generator 7.8 and each extend over the width of the multi-layer headbox 2, to form three suspension layers.
  • the turbulence generators 7.8, 7.10, 7.11 include flow channels, which in this example are formed by tubes which are arranged next to one another in rows across the width. Instead of round tubes, the flow channels can also be designed as tubes with a rectangular flow cross section.
  • the inner turbulence generator comprises one row of pipes, while the adjacent turbulence generators 7.10, 7.11 each comprise two rows of pipes.
  • the turbulence generators 7.8, 7.10, 7.11 are followed by a nozzle 4 with an upper nozzle wall 4.1 and a lower nozzle wall 4.2, the nozzle walls 4.1, 4.2 being arranged to converge towards one another and forming an outlet gap to form a suspension jet.
  • the nozzle 4 there are two separating lamellae 5 to separate the inner suspension layer from the adjacent suspension layers at least part of the nozzle length.
  • the separating lamellae 5 are arranged between the inner turbulence generator 7.8 and the adjacent turbulence generators 7.10, 7.11 and begin in the area at the exit of the respective suspension from the turbulence generators 7.8, 7.10, 7.11.
  • the separating slats 5 are flexible and can be attached in an articulated manner. A rigid connection is also possible.
  • At the end of the upper nozzle wall 4.1 there is a diaphragm 3.1 in the form of a rectangular profile to limit the gap width. Accordingly, the lower nozzle wall 4.2 also has an aperture 3.2 at the end. However, in contrast to the upper aperture 3.1, this is molded onto the lower nozzle wall 4.1. However, an aperture design like that on the upper nozzle wall 4.1 is also possible here.
  • the suspensions can flow without disadvantageous deflections.
  • optional intermediate lamellae 6 are also provided, which are shown in dashed lines.
  • the intermediate lamellae 6 are each arranged between rows of pipes of the turbulence generators 7.10, 7.11 adjacent to the inner turbulence generator 7.8 and begin in the area at the exit of the respective suspension from the turbulence generators 7.10, 7.11.
  • the intermediate slats 6 are flexible and can be attached in an articulated manner. A rigid connection is also possible.
  • the separating slats 5 and the intermediate slats 6 are of the same length in this example.
  • the turbulence generators 7.8, 7.10, 7.11 are preceded by feed systems for feeding suspensions. While fiber suspensions are supplied to the turbulence generators 7.10, 7.11 adjacent to the inner turbulence generator 7.8, the inner turbulence generator 7.8 is supplied with white water as a suspension.
  • the inner suspension layer consists exclusively of white water and one or more auxiliary substances.
  • the white water contains few fibers and, depending on the type of paper produced, fines and fillers.
  • the suspension layers adjacent to the inner suspension layer contain, in addition to fillers and fines, essentially fibrous materials, such as cellulose fibers, recycled fibers, etc., to form the fibrous web.
  • the supply system for the inner turbulence generator 7.8 includes a white water chest 8, which is connected to at least one white water pump 8.1, a white water classifier 8.2, a first cross distributor 8.6 for the middle layer via a white water line 8.31.
  • the first transverse distributor 8.6 is in turn connected to the inner turbulence generator 7.8 to supply the inner suspension layer connected to white water via distribution lines 8.3.
  • an optional pressure booster pump is provided.
  • an auxiliary substance metering device 9.2 is provided for generating a metering volume flow for metering an auxiliary substance into the white water line 8.31.
  • the auxiliary material dosing device 9.2 is designed in such a way that the dosing volume flow can be controlled and/or regulated to adjust the mixing quality between white water and dosing volume flow.
  • the auxiliary substance is fed from an auxiliary substance storage container 9 via an actuator for controlling and/or regulating the volume flow, an auxiliary substance pump 9.1, into the auxiliary substance metering device 9.2. If several different auxiliary substances are dosed, appropriate feeds are provided for each auxiliary substance. In this example, starch is dosed to increase the strength of the fibrous web produced. If a pressure booster pump is provided, the auxiliary material is metered according to this pressure booster pump. If several different auxiliary substances are metered, at least one auxiliary substance is metered after this pressure boosting pump.
  • an auxiliary dilution line 8.5 is provided between the white water line 8.31 and the auxiliary substance metering device 9.2 for pre-dilution of the at least one auxiliary substance.
  • the auxiliary material dilution line 8.5 also includes an actuator, for example a valve, for controlling and/or regulating the volume flow of the pre-dilution water.
  • the actuating elements and/or pumps can be connected via control lines to control and/or regulating devices, not shown, for setting the corresponding volume flows.
  • the feed system for the lower turbulence generator 7.11 adjacent to the inner turbulence generator 7.8 comprises a material chest 11, which is connected to at least one pump 11.1, a material classifier 11.2, a cross distributor 11.3 for the lower suspension layer via a feed line 11.51.
  • the cross distributor 11.3 is in turn connected to the lower turbulence generator 7.11 to supply the lower suspension layer with white water via distribution lines 11.5.
  • a metering line 11.4 can also be provided for metering additives into the feed line after the material chest 11.
  • the feed system for the upper turbulence generator 7.10 adjacent to the inner turbulence generator 7.8 comprises a material chest 10, which is equipped with at least one pump 10.1, a material classifier 10.2, and a cross distributor 10.3 for the upper suspension layer is connected via an inlet line 10.51.
  • the cross distributor 10.3 is in turn connected to the upper turbulence generator 7.10 to supply the upper suspension layer with white water via distribution lines 10.5.
  • a metering line 10.4 can also be provided for metering additives into the feed line 10.51 after the material chest 10.
  • the feed system for the upper turbulence generator 7.10 adjacent to the inner turbulence generator 7.8 comprises a dilution water system of the multilayer headbox 2 with a second transverse distributor 8.7 for sectionally controllable and / or regulatable dosing of dilution water across the width of the multilayer headbox 2 into the upper suspension layer to adjust the cross profile of the area-related Mass of the fibrous web produced.
  • a second transverse distributor 8.7 for sectionally controllable and / or regulatable dosing of dilution water across the width of the multilayer headbox 2 into the upper suspension layer to adjust the cross profile of the area-related Mass of the fibrous web produced.
  • the white water line 8.31 is connected after the white water pump 8.1 and after the white water classifier 8.2 via a dilution water line 8.41 to the second cross distributor 8.7 of the dilution water system.
  • the second cross distributor 8.7 is also connected to the distribution lines 10.5 via distribution lines 8.4.
  • the distribution lines 8.4 each have actuators for adjusting the local amount of dilution water.
  • FIG. 2 A possible further embodiment of the invention is shown. It differs from the embodiment of Figure 1 in that the upper separating slat 5 is designed to be longer than the lower separating slat 5.
  • the lower cover 3.2 is provided in the form of a rectangular profile in accordance with the design of the upper cover 3.1.
  • the Figure 3 shows a further possible embodiment of the invention.
  • Downstream of the multilayer headbox 2 is a forming zone with an endlessly rotating dewatering screen 12.5, guided around a breast roller 12.6, for receiving the suspension jet from the multilayer headbox 2, and a dewatering element 12.
  • the dewatering element 12 has a covering 12.1 that touches the dewatering screen 12.5 and in the covering 12.1 are Drainage openings 12.2 are designed to drain away the resulting white water.
  • the drainage openings 12.2 are designed and arranged in such a way that the pressure pulses acting on the suspension are minimized. This prevents uneven mixing of the inner suspension layer with the adjacent suspension layers.
  • the cross-sectional areas of the drainage openings 12.2 are zonally different and increasingly designed in the running direction of the endlessly rotating drainage sieve 12.5.
  • the cross-sectional area is therefore smaller than in a second zone, which adjoins the first zone in the running direction of the circumferential dewatering sieve 12.5.
  • the covering can, for example, be designed with holes as drainage openings 12.2.
  • the direction of the drainage openings 12.2 in the covering 12.1 has a component in the running direction of the circumferential drainage sieve 12.5. This also supports gentle drainage.
  • the drainage element 12 is sucked by a suction device designed as a vacuum pump 12.4.
  • the suction device 12.4 can also be a vacuum system or a suction siphon. This means that the drainage intensity can be easily adapted to the operating situation.
  • the drainage element 12 has a white water discharge 12.3, which is connected directly or indirectly to the white water tank 8.

Landscapes

  • Paper (AREA)
EP17784944.5A 2016-11-04 2017-10-17 Vorrichtung und verfahren zur herstellung einer faserstoffbahn Active EP3535453B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016121039.0A DE102016121039A1 (de) 2016-11-04 2016-11-04 Vorrichtung und Verfahren zur Herstellung einer Faserstoffbahn
PCT/EP2017/076422 WO2018082911A1 (de) 2016-11-04 2017-10-17 Vorrichtung und verfahren zur herstellung einer faserstoffbahn

Publications (2)

Publication Number Publication Date
EP3535453A1 EP3535453A1 (de) 2019-09-11
EP3535453B1 true EP3535453B1 (de) 2023-10-04

Family

ID=60120050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17784944.5A Active EP3535453B1 (de) 2016-11-04 2017-10-17 Vorrichtung und verfahren zur herstellung einer faserstoffbahn

Country Status (5)

Country Link
EP (1) EP3535453B1 (zh)
CN (1) CN109891024B (zh)
DE (1) DE102016121039A1 (zh)
FI (1) FI3535453T3 (zh)
WO (1) WO2018082911A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3839136A1 (en) * 2019-12-20 2021-06-23 Wetend Technologies Oy A method of and an arrangement for adding at least one additional stock component to an approach flow system of a fiber web machine and headbox feed pipe
US11866884B2 (en) * 2020-03-31 2024-01-09 Kimberly-Clark Worldwide, Inc. Method and apparatus for producing a zoned and/or layered substrate

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923593A (en) * 1971-12-03 1975-12-02 Beloit Corp Multiple ply web former with divided slice chamber
DE3112972A1 (de) 1981-04-01 1982-10-14 J.M. Voith Gmbh, 7920 Heidenheim Mehrfach-duesenstoffauflauf fuer eine papiermaschine
DE4423695C2 (de) * 1994-07-06 1996-10-31 Voith Sulzer Papiermasch Gmbh Verfahren zur Herstellung einer Papier- oder Kartonbahn
DE29623319U1 (de) * 1995-03-29 1998-02-19 Beloit Technologies, Inc., Wilmington, Del. Stoffauflaufzusatzstoffeinspritzsystem
US5626722A (en) * 1995-06-01 1997-05-06 Valmet Corporation Headbox of a paper/board machine
US6210535B1 (en) * 1995-06-01 2001-04-03 Valmet Corporation Stock feed system for a multi-layer headbox and method in the operation of a multi-layer headbox
FI103822B (fi) * 1998-06-16 1999-09-30 Valmet Corp Menetelmä flokkisuuden optimoimiseksi
DE10021979A1 (de) * 2000-05-05 2001-11-08 Voith Paper Patent Gmbh Verfahren sowie Vorrichtung zur Bildung einer mehrschichtigen und/oder mehrlagigen Faserstoffbahn
DE102008000778A1 (de) 2008-03-20 2009-09-24 Voith Patent Gmbh Stoffauflauf für eine Papier- oder Kartonmaschine
FI20085782L (fi) * 2008-08-22 2010-02-23 Metso Paper Inc Kartonkikone
DE102011080424A1 (de) * 2011-08-04 2013-02-07 Voith Patent Gmbh Blattbildungssystem für eine Maschine zur Herstellung einer zwei- oder mehrschichtigen Faserstoffbahn
EP2784214B1 (en) 2013-03-28 2015-09-16 Valmet Technologies, Inc. Feed water supply for a multi-layer headbox
DE102014119495A1 (de) * 2014-12-23 2016-06-23 Valmet Technologies, Inc. Stoffauflaufzufuhrsystem für eine faserstoffbahnmaschine sowie verfahren zum zuführen eines zufuhrwassers zu einem mehrlagenstoffauflauf einer faserstoffbahnmaschine

Also Published As

Publication number Publication date
CN109891024B (zh) 2022-01-14
DE102016121039A1 (de) 2018-05-09
FI3535453T3 (fi) 2023-12-28
EP3535453A1 (de) 2019-09-11
CN109891024A (zh) 2019-06-14
WO2018082911A1 (de) 2018-05-11

Similar Documents

Publication Publication Date Title
EP2379803B1 (de) Stoffauflauf für eine maschine zur herstellung einer faserstoffbahn
EP2379800B1 (de) Stoffauflauf für eine maschine zur herstellung der faserstoffbahn
DE69913450T2 (de) Stoffauflauf zur Verteilung von Faserstoffsuspension und Zusatzstoffe
DE69707256T3 (de) DOPPELSIEBFORMER MIT ROLLE UND KLINGE FüR EINE PAPIERMASCHINE
DE102008054894A1 (de) Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn
WO2010069651A1 (de) Stoffauflauf für eine maschine zur herstellung einer faserstoffbahn
EP3535453B1 (de) Vorrichtung und verfahren zur herstellung einer faserstoffbahn
EP2598690B1 (de) Konstantteil einer maschine zur herstellung einer faserstoffbahn
DE2827840A1 (de) Papiermaschine mit vertikalem doppelsiebband
EP1489224A1 (de) Stoffauflauf
DE4239647A1 (de) Verfahren und Vorrichtung zur Vergleichmäßigung des Flächengewichtsquerprofils mittels Siebkreislaufsektionierung
WO2013072174A1 (de) Sieb
EP0831172B1 (de) Siebpartie und Verfahren zum Entwässern einer Faserstoffbahn in einer Siebpartie
DE102018120162A1 (de) Stoffauflauf
AT518294B1 (de) Papiermaschine
AT522849B1 (de) Verfahren und system zum sieben einer beschichtungsmischung in einer faserbahnmaschine
DE10230301A1 (de) Verfahren zum Verteilen einer Faserstoffsuspension im Stoffauflauf einer Papier- oder Kartonmaschine und Stoffauflauf
EP1953296B1 (de) Verfahren zur Herstellung einer Faserstoffbahn und Doppelsiebformer zur Durchführung des Verfahrens
AT516646A2 (de) Formierpartie einer Faserbahnmaschine und sekundäre Formierpartie für eine Mehrlagenformierpartie einer Faserbahnmaschine
EP1489229B1 (de) Doppelsiebformer einer Maschine zur Herstellung einer Faserstoffbahn
DE19514236C2 (de) Stoffauflauf für eine Papiermaschine zum Erzeugen einer mehrschichtigen oder mehrlagigen Papierbahn
DE9320495U1 (de) Stoffauflaufeinrichtung für eine Papiermaschine
EP4328376A1 (de) Schrägsiebformer
DE102004043375A1 (de) Bahnbefeuchtung
DE102019129999A1 (de) Vorrichtung zur Herstellung einer mehrlagigen Faserstoffbahn

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190604

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HAEUSSLER, MARKUS

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH PATENT GMBH

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20221115

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230712

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502017015458

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20231128

Year of fee payment: 7

Ref country code: DE

Payment date: 20231020

Year of fee payment: 7

Ref country code: AT

Payment date: 20231020

Year of fee payment: 7

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20231004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240204

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240105

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240104

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240104

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231017