EP1318230A1 - Stoffauflauf - Google Patents
Stoffauflauf Download PDFInfo
- Publication number
- EP1318230A1 EP1318230A1 EP02024712A EP02024712A EP1318230A1 EP 1318230 A1 EP1318230 A1 EP 1318230A1 EP 02024712 A EP02024712 A EP 02024712A EP 02024712 A EP02024712 A EP 02024712A EP 1318230 A1 EP1318230 A1 EP 1318230A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamella
- hollow
- headbox according
- headbox
- nozzle
- 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.)
- Granted
Links
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 229920002472 Starch Polymers 0.000 claims abstract description 7
- 239000008107 starch Substances 0.000 claims abstract description 7
- 235000019698 starch Nutrition 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims abstract description 5
- 241000446313 Lamella Species 0.000 claims description 97
- 239000000945 filler Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- -1 auxiliaries Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 239000011343 solid material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000282376 Panthera tigris Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
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
- D21F1/02—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
- D21F1/02—Head boxes of Fourdrinier machines
Definitions
- the invention relates to a headbox, in particular a multilayer headbox, a paper machine, with a nozzle, the interior of which at least in some areas is divided by at least one lamella.
- Such headboxes are for example from DE 199 02 621 A1 and WO 82/03413 A1 known.
- headboxes with and without fixed or flexible fins are between the layers of fabric and / or the rows of diffusers or turbulence generators known.
- the fins cause an increase in microturbulence, one Layer separation, a reduction in the tear length ratio and / or Reduction of so-called "tiger stripes" (compare, for example, DE 199 02 621 A1).
- WO 82/03413 A1 already discloses a layer separation by means of a machine-wide multiple nozzle and the feed of primarily white water known in the machine-wide middle class. In this publication is the feeding of fine or fillers by means of this middle layer is also mentioned.
- the pressures in the machine-wide outer layers and in the machine-wide middle layer be at least essentially the same (necessary gap between lamella and Nozzle wall).
- the machine-wide multiple nozzle also enables one Pressure equalization in the different layers in the cross machine direction.
- auxiliaries and fillers In connection with the admixture of auxiliaries and fillers is common a dosage in the mass or, especially for auxiliary substances, in the constant Part provided.
- the aim of the invention is to provide an improved headbox of the type mentioned Way of creating.
- the setting options in particular should also be considered a range of operating parameters such as the degree of mixing inside and outside the nozzle, mixing in the z direction, the turbulence that arises in the suspension, the transverse profiling and so on to be expanded further.
- this object is achieved by a headbox, in particular Multilayer headbox, a paper machine, with a nozzle, the interior of which is divided at least in regions by at least one lamella, wherein at least one slat is designed as a hollow slat, preferably for metering a pumpable medium in the suspension in particular with a region of the nozzle space surrounded by the pressure in the hollow lamella different pressure can be applied.
- one or more hollow lamellas pumpable medium such as white water, glue or starch liquor, Fine or fillers, auxiliaries, color and so on, with or without fiber content, for example in the nozzle area.
- a Hollow slats are clear pressure differences between the slat interior and the nozzle area surrounding the lamella possible. This results in, among other things the possibility of admixing the pumpable medium at a rate, the slower, the same quick or faster than that in the area of Dosing point is the prevailing suspension speed.
- the hollow lamella should preferably be able to perform its function as optimally as possible be stable in thickness, the thickness of the hollow lamella being at most half as large like the two neighboring nozzle heights to avoid excessive convergence, to avoid excessive heights, to avoid too large beam lengths and to improve the paper quality (formation and the like) should be.
- the hollow slat should expediently both in the flow direction and in the transverse direction be very rigid. A rigid hollow slat also allows different Press in the part above and below.
- the degree of mixing can be set in and outside the nozzle.
- the pumpable medium is mixed with the residual material in the area of the initial drainage, preferably with long hollow lamella length and therefore short jet.
- the mixing in the z direction be adjusted well.
- desired turbulence can be introduced into the fiber suspension in order to for example the strength properties in the longitudinal and transverse directions (L / Q ratio) to change.
- the hollow lamella can, in particular, start in the direction of flow considered entry-side end in the nozzle space.
- the hollow lamella is inside the nozzle area ends.
- the hollow lamella can be, for example, in the area of the nozzle outlet gap and preferably end exactly at this outlet gap. In principle, however, the hollow slat can also be used at other points within the End of the nozzle area.
- the cavity lamella is outside of the nozzle area ends.
- the hollow lamella comprises at least two generally in the direction of flow extending over at least part of the slat length Walls which can serve, in particular, separate pressure rooms to accomplish.
- the hollow lamella preferably comprises at least two opposite side walls. These slat walls are preferred non-positively connected.
- One or more partitions are provided to different, to form channels extending in the direction of flow.
- the walls generally extending in the direction of flow can according to an expedient embodiment can be at least partially formed by that one or. in the hollow lamella, which is otherwise made of solid material several channels or tubes are formed or incorporated.
- the hollow lamella is preferably both in the direction of flow and also rigid in the transverse direction.
- the slat cover can and / or the slat bottom, for example with ribs or the like be reinforced. The risk of bulging the hollow lamella is thus reduced Minimum reduced.
- the headbox is the interior of the hollow slat in the area of the free slat end trained converging.
- the interior the hollow slat in the area of the free slat end at least upwards and is limited at the bottom by mutually parallel walls.
- the interior of the hollow slat can be in the area of the free slat end also be divergent. So can the interior of the hollow slat expand step-by-step in the area of the free slat end, for example.
- the interior of the hollow lamella at least in the area the free slat end is structured. In principle, however, this is also the case Execution conceivable in which the interior of the hollow slat at least in Area of the free slat end is not structured.
- Headbox are provided by means of the hollow lamella as pumpable Medium for example white water, glue or starch liquor, fine or fillers, Auxiliaries, paint and / or the like can be metered into the nozzle space.
- the hollow lamella is advantageously for metering a pumpable one Medium in the nozzle space can be pressurized to a higher, equal or is lower than the pressure at the dosing point in the surrounding of the hollow lamella Area.
- the hollow lamella comprises several, each extending in the direction of flow Channels, at least these channels can be used for cross-profiling can be partially charged separately.
- the to be dosed Means can therefore be distributed over the machine width as required.
- the headbox according to the invention are at least partially separate dosing units for the different channels such as especially associated with control valves and / or the like.
- the metering can thus be carried out via the various channels and, for example, control valves, similar to the commercially available "ModuleJet” version, or influenced by several independent dosing units across the web width become.
- Slats can in principle also in the specified manner as Hollow slats are formed, for example, to have a certain bending stiffness to achieve or to save material, for example.
- Pumpable dosage In this case, medium is not mandatory.
- FIG. 1 shows a schematic longitudinal sectional view of the nozzle 10 comprehensive part of a headbox 12 of a paper machine. It can are in particular a multi-layer headbox.
- the interior 14 of the nozzle 10 is at least partially by at least a hollow slat 16 divided.
- This hollow lamella 16 is preferably for metering a pumpable medium 18 in the suspension in particular with a region of the nozzle space surrounded by the pressure in the hollow lamella 16 14 different pressures can be applied.
- the hollow lamella 16 ends as follows If, for example, inside the nozzle chamber 14, the metering takes place of the pumpable medium 18 in this nozzle space 14. According to FIG the medium 18 in question is fed to the hollow lamella 16 via a pump 20 become.
- the suspension layers A and B are separated from one another Cut.
- the pumpable medium 18 is therefore between these two layers A, B dosed.
- the hollow lamella 16 extends from viewed in the flow direction S. inlet-side nozzle end 22 in the nozzle chamber 14.
- the hollow lamella 16 with its relevant end 16 'in a headbox block such as in particular a turbulence block 24.
- hollow lamella 16 in the illustrated embodiment within of the nozzle chamber 14 ends, such designs are basically also, for example conceivable, in which the hollow lamella 16 in the region of the nozzle outlet gap 26 and preferably exactly at this nozzle outlet gap 26 or outside of the nozzle chamber 14 ends.
- the hollow slat 16 is down and up through a bottom 16 "respectively Cover 16 '' 'limited.
- the hollow lamella 16 is of stable thickness, the thickness D of the hollow lamella 16 being at most half as large as the two adjacent nozzle heights H 1 , H 2 .
- FIG. 2 shows a schematic top view of the hollow lamella 16.
- the hollow lamella 16 can at least comprise two opposite side walls 28, 30. How in particular from Figures 3 to 7, can between these two side walls 28, 30 one or more partition walls 32 may be provided. These walls can in particular serve to differentiate each in the direction of flow S extending channels 34 (compare in particular Figures 3 to 7) form. Through the walls in question can thus in particular from each other separate pressure rooms are created.
- FIGS. 3 to 7 they are generally in Flow direction S extending walls 28 - 32 (see also the figures 1 and 2) at least partially formed by the fact that in the rest of solid material existing hollow lamella 16 one or more channels 34 or tubes are trained or incorporated.
- the channels 34 each have a square, preferably square cross section. According to Figure 4 can these channels 34 also have, for example, a triangular cross section. In the embodiment according to FIG. 5, the channels have a round one Cross-section.
- the cross section of the channels 34 of the embodiment shown in FIG. 6 corresponds, for example, to a hexagon.
- the channels 34 of the embodiment 7 again have a square, preferably square cross section. In this case, two corners face the respective channels 34 up and down and two corners to the two opposite each other Pages. This results in a corresponding partition 32 a variable thickness, which from time to time viewed from top to bottom then increases again.
- the partitions at Embodiment according to FIG 3 a constant from top to bottom Thickness.
- the hollow lamella 16 is preferably both in the flow direction S and in Transverse direction rigid.
- Figure 8 is a schematic partial cross-sectional view for example, a hollow lamella 16 shown, the bottom 16 "and cover 16" 'are each reinforced by ribs 36. The representation corresponds again a section along the line A-A in FIG. 2.
- FIG. 9 shows a schematic longitudinal sectional illustration of part of a Hollow lamella 16, the interior 14 in the area of the free lamella end 38 for Example is designed in the manner of a nozzle converging. Is shown here just as in FIGS. 10 to 12, a section along the line B-B in FIG. 2.
- the interior 14 is the hollow lamella 16 in the area of the free slat end 38 at least upwards and bounded downwards by mutually parallel walls 40, 42.
- These walls or wall sections 40, 42 are in the present case Part of the slat cover 16 '' 'or slat bottom 16 ".
- the interior 14 is the hollow lamella 16 formed diverging in the area of the free fin end 38.
- FIG. 12 shows a representation comparable to that in FIGS. 9 to 11 an embodiment in which the interior 14 of the hollow lamella 16 in the area of the free slat end 38 expanded in steps.
- the hollow lamella 16 may or may not be structured.
- Means can be provided through which the hollow lamella 16 can be pumped Means 18 for example white water, glue or starch liquor, fine or Fillers, auxiliaries, paint and / or the like in the suspension respectively can be metered into the nozzle chamber 14.
- Means 18 for example white water, glue or starch liquor, fine or Fillers, auxiliaries, paint and / or the like in the suspension respectively can be metered into the nozzle chamber 14.
- the hollow lamella 16 is preferably for metering a respective pumpable one Medium 18 in the suspension or in the nozzle chamber 14 with a Pressurizable that is higher, equal or lower than the pressure at the Dosing point in the area surrounding the hollow lamella 16. As already mentioned, This dosing point can be inside or outside the nozzle chamber 14.
- these channels 34 can in particular for a Cross-profiling or cross-profile control at least partially separated be acted upon.
- the various channels 34 can at least partially separate dosing units such as in particular control valves and / or the like be assigned.
- FIG. 13 shows a schematic, partially sectioned top view of one with at least one hollow slat 16 provided with a headbox 12 with a cross profile control, for which a control or regulating device 44 in the present case such as in particular a PC and a cross-profile measuring device 46 are.
- the dosage can then depend on the measured values and corresponding ones Setpoints take place.
- the hollow lamella 16 is in particular again supported in a turbulence block 24, which can in particular be a turbulence generator.
Landscapes
- Paper (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
Description
- Figur 1:
- eine schematische Längsschnittdarstellung eines die Düse umfassenden Teils eines Stoffauflaufs;
- Figur 2:
- eine schematische Draufsicht der in der Figur 1 gezeigten Hohllamelle;
- Figuren 3 bis 7:
- schematische Teilquerschnittsdarstellungen verschiedener Ausführungsformen der Hohllamelle mit Kanälen unterschiedlichen Querschnitts, geschnitten entlang der Linie A-A in der Figur 2;
- Figur 8:
- eine schematische Teilquerschnittsdarstellung einer Hohllamelle, deren Deckel und Boden durch Rippen verstärkt sind;
- Figur 9:
- eine schematische Längsschnittdarstellung eines Teils einer Hohllamelle, deren Innenraum im Bereich des freien Lamellenendes konvergierend ausgebildet ist;
- Figur 10:
- eine schematische Längsschnittdarstellung eines Teils einer Hohllamelle, deren Innenraum im Bereich des freien Lamellenendes zumindest nach oben und nach unten durch zueinander parallele Wandungen begrenzt ist;
- Figur 11:
- eine schematische Längsschnittdarstellung eines Teils einer Hohllamelle, deren Innenraum im Bereich des freien Lamellenendes divergierend ausgebildet ist;
- Figur 12:
- eine schematische Längsschnittdarstellung eines Teils einer Hohllamelle, deren Innenraum sich im Bereich des freien Lamellenendes stufenartig erweitert; und
- Figur 13:
- eine schematische, teilweise geschnittene Draufsicht eines mit zumindest einer Hohllamelle versehenen Stoffauflaufs mit einer Querprofilregelung.
- 10
- Düse
- 12
- Stoffauflauf
- 14
- Düsenraum
- 16
- Hohllamelle
- 16'
- Lamellenende
- 16"
- Lamellenboden
- 16"'
- Lamellendeckel
- 18
- Pumpfähiges Medium
- 20
- Pumpe
- 22
- Eintrittsseitiges Düsenende
- 24
- Turbulenzblock
- 26
- Düsenaustrittsspalt
- 28
- Seitenwand
- 30
- Seitenwand
- 32
- Trennwand
- 34
- Kanal
- 36
- Rippe
- 38
- Freies Lamellenende
- 40
- Wandung
- 42
- Wandung
- 44
- Steuer- oder Regelungseinrichtung, PC
- 46
- Querprofil-Messeinrichtung
- D
- Dicke
- H1, H2
- Düsenhöhe
Claims (23)
- Stoffauflauf (12), insbesondere Mehrschichtstoffauflauf, einer Papiermaschine, mit einer Düse (10), deren Innenraum (14) zumindest bereichsweise durch wenigstens eine Lamelle (16) unterteilt ist, wobei zumindest eine Lamelle als Hohllamelle (16) ausgeführt ist, die vorzugsweise zur Dosierung eines pumpfähiges Mediums (18) in die Suspension insbesondere auch mit einem vom Druck im die Hohllamelle (16) umgebenden Bereich des Düsenraumes (14) verschiedenen Druck beaufschlagbar ist.
- Stoffauflauf nach Anspruch 1,
dadurch gekennzeichnet, dass sich die Hohllamelle (16) ausgehend vom in Strömungsrichtung (S) betrachtet eintrittsseitigen Düsenende (22) in den Düsenraum (14) erstreckt. - Stoffauflauf nach Anspruch 2,
dadurch gekennzeichnet, dass die Hohllamelle (16) mit einem Ende (16') in einem Stoffauflaufblock (24) gelagert ist. - Stoffauflauf nach Anspruch 2 oder 3,
dadurch gekennzeichnet, dass die Hohllamelle (16) innerhalb des Düsenraumes (14) endet. - Stoffauflauf nach Anspruch 2 oder 3,
dadurch gekennzeichnet, dass die Hohllamelle (16) im Bereich des Düsenaustrittsspaltes (26) und vorzugsweise genau an diesem Düsenaustrittsspalt (26) endet. - Stoffauflauf nach Anspruch 2 oder 3,
dadurch gekennzeichnet, dass die Hohllamelle (16) außerhalb des Düsenraumes (14) endet. - Stoffauflauf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Hohllamelle (16) zumindest zwei sich allgemein in Strömungsrichtung (S) über zumindest einen Teil der Lamellenlänge erstreckende Wände (28-32) umfasst, um insbesondere voneinander getrennte Druckräume (34) zu schaffen. - Stoffauflauf nach Anspruch 7,
dadurch gekennzeichnet, dass die Hohllamelle (16) zumindest zwei einander gegenüberliegende Seitenwände (28, 30) umfasst. - Stoffauflauf nach Anspruch 8,
dadurch gekennzeichnet, dass zwischen den beiden Seitenwänden (28, 30) eine oder mehrere Trennwände (32) vorgesehen sind, um verschiedene sich jeweils in Strömungsrichtung (S) erstreckende Kanäle (34) zu bilden. - Stoffauflauf nach einem Ansprüche 7 bis 9,
dadurch gekennzeichnet, dass die sich allgemein in Strömungsrichtung (S) erstreckenden Wände (28-32) zumindest teilweise dadurch gebildet sind, dass in der im übrigen aus Vollmaterial bestehenden Hohllamelle (16) ein oder mehrere Kanäle (34) oder Röhren ausgebildet oder eingearbeitet sind. - Stoffauflauf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Hohllamelle (16) dickenstabil ausgeführt ist, wobei die Dicke (D) der Hohllamelle (16) höchstens halb so groß wie die beiden benachbarten Düsenhöhen (H1, H2) ist. - Stoffauflauf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Hohllamelle (16) sowohl in Strömungsrichtung (S) als auch in Querrichtung biegesteif ausgeführt ist. - Stoffauflauf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Lamellendeckel (16"') und/oder der Lamellenboden (16") mit Rippen (36) oder dergleichen verstärkt sind. - Stoffauflauf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Innenraum (14) der Hohllamelle (16) im Bereich des freien Lamellenendes (38) konvergierend ausgebildet ist. - Stoffauflauf nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, dass der Innenraum (14) der Hohllamelle (16) im Bereich des freien Lamellenendes (38) zumindest nach oben und nach unten durch zueinander parallele Wandungen (40, 42) begrenzt ist. - Stoffauflauf nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, dass der Innenraum (14) der Hohllamelle (16) im Bereich des freien Lamellenendes (38) divergierend ausgebildet ist. - Stoffauflauf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass sich der Innenraum (14) der Hohllamelle (16) im Bereich des freien Lamellenendes (38) stufenartig erweitert. - Stoffauflauf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Innenraum (14) der Hohllamelle (16) zumindest im Bereich des freien Lamellenendes (38) strukturiert ist. - Stoffauflauf nach einem der Ansprüche 1 bis 17,
dadurch gekennzeichnet, dass der Innenraum (14) der Hohllamelle (16) zumindest im Bereich des freien Lamellenendes (38) nicht strukturiert ist. - Stoffauflauf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass Mittel vorgesehen sind, durch die über die Hohllamelle (16) als pumpfähiges Medium (18) Siebwasser, Leim- oder Stärkeflotte, Fein- oder Füllstoffe, Hilfsstoffe, Farbe und/oder dergleichen in die Suspension dosierbar sind. - Stoffauflauf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Hohllamelle (16) zur Dosierung eines jeweiligen pumpfähigen Mediums (18) in die Suspension mit einem Druck beaufschlagbar ist, der höher, gleich oder niedriger ist als der Druck an der Dosierstelle im die Hohllamelle (16) umgebenden Bereich. - Stoffauflauf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Hohllamelle (16) mehrere sich jeweils in Strömungsrichtung (S) erstreckende Kanäle (34) umfasst und dass diese Kanäle (34) insbesondere für eine Querprofilierung zumindest teilweise getrennt beaufschlagbar sind. - Stoffauflauf nach Anspruch 22,
dadurch gekennzeichnet, dass den verschiedenen Kanälen (34) zumindest teilweise getrennte Dosiereinheiten wie insbesondere Regelventile und/oder dergleichen zugeordnet sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10159412A DE10159412A1 (de) | 2001-12-04 | 2001-12-04 | Stoffauflauf |
| DE10159412 | 2001-12-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1318230A1 true EP1318230A1 (de) | 2003-06-11 |
| EP1318230B1 EP1318230B1 (de) | 2006-11-15 |
Family
ID=7707912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02024712A Expired - Lifetime EP1318230B1 (de) | 2001-12-04 | 2002-11-06 | Stoffauflauf |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1318230B1 (de) |
| AT (1) | ATE345417T1 (de) |
| DE (2) | DE10159412A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010093311A1 (en) * | 2009-02-16 | 2010-08-19 | Stora Enso Ab | Process for the production of paper or paperboard |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008000778A1 (de) | 2008-03-20 | 2009-09-24 | Voith Patent Gmbh | Stoffauflauf für eine Papier- oder Kartonmaschine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802966A (en) * | 1969-08-22 | 1974-04-09 | Ethyl Corp | Apparatus for delivering a fluid suspension to a forming unit clear reactor power plant |
| WO1981002903A1 (en) * | 1980-04-11 | 1981-10-15 | Valmet Oy | Headbox for a paper machine |
| WO1982003413A1 (fr) * | 1981-04-01 | 1982-10-14 | Egelhof Dieter | Machine a papier ayant une caisse de tete a plusieurs tuyeres |
| US6319366B1 (en) * | 1998-02-05 | 2001-11-20 | Andritz-Patentverwaltungs-Gesellschaft M.B.H. | Headbox for feeding a pulp suspension to a dewatering installation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2336616A1 (en) * | 1998-07-07 | 2000-01-13 | Marko Murtonen | Foam process implementation using fuzzy controllers |
| DE19846614A1 (de) * | 1998-10-09 | 2000-04-13 | Voith Sulzer Papiertech Patent | Stoffauflauf mit Lamelle |
| DE19902621A1 (de) * | 1999-01-23 | 2000-07-27 | Voith Sulzer Papiertech Patent | Stoffauflauf |
-
2001
- 2001-12-04 DE DE10159412A patent/DE10159412A1/de not_active Withdrawn
-
2002
- 2002-11-06 EP EP02024712A patent/EP1318230B1/de not_active Expired - Lifetime
- 2002-11-06 DE DE50208694T patent/DE50208694D1/de not_active Expired - Lifetime
- 2002-11-06 AT AT02024712T patent/ATE345417T1/de active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802966A (en) * | 1969-08-22 | 1974-04-09 | Ethyl Corp | Apparatus for delivering a fluid suspension to a forming unit clear reactor power plant |
| WO1981002903A1 (en) * | 1980-04-11 | 1981-10-15 | Valmet Oy | Headbox for a paper machine |
| WO1982003413A1 (fr) * | 1981-04-01 | 1982-10-14 | Egelhof Dieter | Machine a papier ayant une caisse de tete a plusieurs tuyeres |
| US6319366B1 (en) * | 1998-02-05 | 2001-11-20 | Andritz-Patentverwaltungs-Gesellschaft M.B.H. | Headbox for feeding a pulp suspension to a dewatering installation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010093311A1 (en) * | 2009-02-16 | 2010-08-19 | Stora Enso Ab | Process for the production of paper or paperboard |
| EP2396467A4 (de) * | 2009-02-16 | 2012-07-25 | Stora Enso Ab | Verfahren zur herstellung von papier oder karton |
| US8512517B2 (en) | 2009-02-16 | 2013-08-20 | Stora Enso Ab | Process for the production of paper or paperboard |
| CN102317539B (zh) * | 2009-02-16 | 2014-02-12 | 斯托拉恩索公司 | 用于生产多层纸或纸板产品的工艺及压头箱 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1318230B1 (de) | 2006-11-15 |
| DE50208694D1 (de) | 2006-12-28 |
| ATE345417T1 (de) | 2006-12-15 |
| DE10159412A1 (de) | 2003-06-12 |
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