EP1098035A2 - Doppelsiebformer - Google Patents
Doppelsiebformer Download PDFInfo
- Publication number
- EP1098035A2 EP1098035A2 EP00116920A EP00116920A EP1098035A2 EP 1098035 A2 EP1098035 A2 EP 1098035A2 EP 00116920 A EP00116920 A EP 00116920A EP 00116920 A EP00116920 A EP 00116920A EP 1098035 A2 EP1098035 A2 EP 1098035A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- twin
- wire former
- former according
- guide surface
- bar
- 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
Images
Classifications
-
- 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
-
- 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
- D21F1/48—Suction apparatus
Definitions
- the invention relates to a twin wire former for forming a fibrous web, in particular paper or cardboard web, with two revolving endless sieves that converge to form a material inlet gap and form a double sieve zone, in which the two sieves together in particular via one in contact with the inside of the two screens coming forming roller as well as one coming into contact with the outer wire Support device are guided within the loop of the outer wire arranged and viewed with a front viewed in the direction of wire travel Inlet bar is provided which has a general front nose convexly curved outer surface as well as one in the direction of the wire running on it subsequent ramp surface for the outer screen includes.
- the support device can in particular be a drainage or suction box.
- v PM 2 / 2g [m WS] is also additionally affected by the change in momentum of the white water discharged from the skimmer bar, which changes due to the parameters (which influence the run-up conditions of the outer screen) such as PM , material density, curve of the skimmer ledge, wire tension, distance FW to the skimmer ledge, curvature of the shape (bulge) of the outer screen of the skimmer nose and presumably also influenced by fluid friction.
- the skimmer bar is immersed in the touching sieve line, i.e. an angle between the incoming sandwich (outer sieve, enclosed fleece, inner sieve) and the more or less flat surface of the skimmer ledge so that the outer sieve the skimmer nose wraps around at a small angle.
- the aim of the invention is to provide a twin wire former of the type mentioned Type to create, in which the pressure conditions on the skimmer or Inlet bar are improved and the risk of impairment of the fiber fleece already formed in the inlet to the support device, i.e. especially a skimmer box, is reduced accordingly.
- the object is achieved according to the invention in that the Nose adjoining ramp surface of the infeed rail is generally convexly curved is and that the minimum radius of curvature of this ramp surface is larger than that of the nose.
- This solution according to the invention is in principle for all enemas in Twin sieve areas applicable, i.e. especially for Duo-D and Conti Drain (i.e. with a constant pressure drainage, also with the inlet between the two plates is a critical point).
- the invention thus also relates to all of these inlet areas.
- the outer screen is preferably in the area of the inlet strip as a whole deflected by an angle ranging from about 1 ° to about 30 ° and preferably in a range from about 10 ° to about 20 °.
- the total deflection can therefore be somewhat larger than this State of the art corresponds (about 1 ° to 2 °), but should not be essential become larger than in the previously used twin wire formers.
- the run-in strip has a connection to the run-up surface a guide surface for the outer screen. It is an advantage if this Guide surface in at least one adjacent to the ramp surface Section is also generally convex and the minimum Radius of curvature of this guide surface section is greater than that the ramp area. The ramp area and the adjoining one Guide surface section expediently flow into one another about.
- the guide surface following the ramp surface or following the curved guide surface section at least substantially flat.
- the transition between the run-up surface and the flat one can Guide surface section or between the curved guide surface section and the flat guide surface section is flowing again his.
- the guide surface is connected to the run-up surface or following the curved guide surface section one continuously larger in the direction of the wire becoming radius of curvature.
- the radius of curvature of the nose is preferably in a range of about 0.5 to about 1 mm.
- the radius of curvature of the ramp surface in a range from about 20 to about 100 mm, and preferably in one Range is from about 30 to about 50 mm.
- different operating states can be taken into account, in which different types of paper, that is to say different speeds and amounts of water, are run, as a result of which the thickness of the nonwoven fabric can change considerably.
- a decreasing course of the radius of curvature R 1 can also be advantageous.
- the radius of curvature of the curved guide surface section can for example in a range from about 100 to about 1000 mm.
- the length of the ramp surface is expediently at least as great dimensioned that the installation of the outer screen in all operating conditions can be done in this area. This length is preferably in a range from about 10 to about 20 mm.
- the support device comprises a suction box.
- the forming roller can, for example, have a rigid roller shell or also through a generally circular cylindrical forming belt be educated.
- the radius of curvature of the ramp surface can be constant, for example or in the direction of the wire e.g. grow continuously. Also one Continuous decrease in the radius of curvature can be beneficial.
- the radius of the curved guide surface section can also be, for example be constant again or in the direction of the wire e.g. continuously grow.
- the pressure under the leading edge of the skimmer bar is crucial for the stress and / or destruction of the fiber fleece already formed. This pressure is very dependent on various parameters such as the consistency, the toughness of the suspension (influenced by chemicals, Fiber properties, consistency), the machine speed, the amount of water driven and thus the water level in front of the skimmer bar or the water level carried on the outer screen.
- Another The object of the invention is to optimize this under the pressure of the prevailing pressure on the skimmer to minimize the fiber fleece formed before entering the skimmer bar.
- this can be achieved, for example, in that the support device provided with the inlet strip for influencing of the prevailing liquid pressure on the inlet rail adjustable is.
- the support device is expediently adjustable so that the immersion depth with which the support device changes accordingly immersed in the touching sieve line.
- the fluid pressure is by adjusting or adjusting the support device accordingly controllable and / or adjustable.
- the pressure can in particular be measured by a pressure sensor become. For example, by intermittent or constant rinsing of the measuring line With clear water or compressed air, contamination with fibers can occur be prevented. At least immediately after rinsing Pressure can then be measured correctly. For example through a learning phase An algorithm can be adjusted after commissioning become.
- the invention is at least in principle is applicable for all inlets in twin-wire areas, i.e. so especially also for Duo-D and Conti Drain (i.e. with constant pressure drainage, where also the inlet area between the two plates is a critical point).
- the invention thus also relates to all these lead-in areas.
- Fig. 1 shows a purely schematic partial representation of a twin wire former 10, from which is the basic structure of such a twin wire former results.
- the twin wire former 10 serves to form a fibrous web, in particular a paper or cardboard web, from a fiber suspension 12. It can thus in particular be part of a paper machine.
- the twin wire former 10 comprises two revolving endless ones Sieves 14, 16 which converge to form a stock inlet gap 18 and form a twin wire zone 20.
- this twin-wire zone 20 are the two screens 14, 16 together via one with the inner 14 of the two screens 14, 16 coming into contact with forming roll 22 and one with the outer sieve 16 coming into contact with the support device is arranged within the loop of the outer wire 16 and in the present Case includes a suction box 24.
- the suction box 24 has a front viewed in the running direction L.
- Inlet bar 26 provided a front nose 28 with a general convexly curved outer surface 28 'and one in the direction of wire travel L adjoining ramp surface 30 for the outer sieve 16.
- the fibrous suspension 12 is by means of a not shown here Headbox introduced into the stock inlet gap 18.
- Fig. 2 shows in an enlarged view that designated in Fig. 1 with "A" Area of a conventional twin wire former 10.
- A Area of a conventional twin wire former 10.
- ⁇ is the Angle specified by which the outer screen 16 in the area of the inlet strip 26 is diverted in total.
- the run-on surface 30 of the run-in ledge 26 adjoining the nose 28 is straight or even, according to the prior art. Accordingly, only the nose 28 is curved according to a radius of curvature R N.
- FIG. 3 shows an enlarged representation of the one labeled "A" in FIG. 1 Area of a twin wire former 10 according to the invention.
- the contact surface 30 adjoining the nose 28 is the Inlet ledge 26 is generally convexly curved, with the radius of curvature this ramp surface 30 is larger than that of the nose 28.
- the radius of curvature R N of the nose 28 is, as previously, in a range of, for example, approximately 0.5 to approximately 1 mm.
- the radius of curvature R 1 of the run-up surface 30 can be, for example, in a range from approximately 20 to approximately 100 mm and preferably, for example, in a range from approximately 30 to approximately 50 mm.
- the run-in strip 26 has a guide surface 32 for the outer sieve 16 following the run-up surface 30.
- This guide surface 32 is also generally convexly curved in a section 32 ′ adjoining the run-on surface 30.
- the radius of curvature R 2 of this curved guide surface section 32 ' is expediently greater than the radius of curvature R 1 of the run-up surface 30.
- This radius of curvature R 2 of the curved guide surface section 32' can be, for example, in a range from approximately 100 to approximately 1000 mm.
- the ramp surface 30 and the adjoining guide surface section 32 ′ or the relevant radii of curvature R 1 and R 2 can, for example, also merge smoothly into one another.
- the Angle between the respective flat guide surface section 32 ′′ and the incoming outer screen 16 is again indicated by ⁇ .
- ⁇ is shown enlarged for the sake of better illustration the outer screen 16 is deflected overall in the area of the inlet strip 26.
- the corresponding one Deflection angle ⁇ can range, for example, from approximately 1 ° to approximately 30 ° and in particular up to about 20 ° and preferably in one range from about 10 ° to about 20 °.
- the outer screen 16 comes in Screen running direction L behind the forming roller 22 with the inlet bar 26 in particular by a suction device 24 in Contact.
- a suction device 24 in Contact it is also possible for the outer screen 16 already in the area of the wire discharge point of the forming roller 22 with the support device 24 or the inlet strip 26 comes into contact.
- Figures 4 and 5 show a schematic partial representation of another Embodiment of an enema according to the invention in one of the two Sieves 14, 16 comprising a double sieve area, in which a pressure sensor 34 is arranged in the area of the inlet or skimmer strip 26.
- the pressure sensor 34 is used to measure the prevailing on the inlet strip 26 Fluid pressure. For example, there is a pressure measurement possible in the run-in bar 26, e.g. in the run-in bar 26 a pressure measuring bore 36 is introduced.
- a compressed air or Pure water connection 38 is provided
- the support device 24 provided with the inlet strip 26 can be used for influencing of the prevailing liquid pressure on the inlet bar 26 be adjustable.
- the support device 24 is, for example is so adjustable that the immersion depth E changes accordingly with which immerses the support device 24 in the touching screen line.
- the Fluid pressure can be adjusted or adjusted accordingly Support device 24 can be controlled and / or regulated.
- the shape of the inlet strip 26 can in particular be such that as previously described.
- a pressure measurement in the skimmer or Inlet bar 26 a control and / or regulation of the pressure curve and / or the penetration depth E of the support device 24, for example a suction box e.g. of a CFD former possible.
- the immersion depth E is preferably provided as the setting parameter. It but can also e.g. by rotating the degree of pivoting of the Support device 24 are influenced.
- After installation and ventilation of the pressure sensor 34 can constantly or intermittently blowing in a certain amount of flushing water or flushing air to keep the hole clean.
- the pressure on the inlet bar 26 can e.g. as setting parameters to regulate the position of the support device or the suction box position be used.
- FIG. 6 shows a further embodiment in a schematic partial representation an inlet according to the invention into a two sieves 14, 16 Twin-wire area with an inlet strip 26, which has an elastic cushioned mounting on the base body or frame of the support device 24 is attached.
- the attachment of the inlet strip 26 to the base body or frame, for example support device 24 again formed by a suction box can be done so that in the event of irregularities in the thickness of the sieves 14, 16 and the fiber suspension 12 existing sandwiches and entrained water the inlet bar 26 correspondingly articulated or pivotable is stored and support in the area of direction the resulting pressure forces are achieved by a suitable combination of spring and damper elements.
- a suitable combination of spring and damper elements As can be seen from FIG. 6 is, includes the elastically damped mounting in the illustrated embodiment at least one steel spring 40 and at least one rubber 42.
- the joint is designated 44. But it is also suspension / damping in the relevant places or any other Combination of spring / damper and guide elements possible.
- the Range of the resulting forces acting on the inlet bar 26 is designated with 46.
- FIG. 7 shows a further embodiment in a schematic partial representation an inlet according to the invention into a two sieves 16, 14 Twin-wire area, in which the inlet strip 26 in the nose area one made of plastically elastic material such as rubber projecting projection 48.
- This extension 48 is preferably executed so that it is affected by the flow forces 50 is held in contact with the outer screen 16.
- the nose can also do this Holes 52 may be provided, for example, directed obliquely downwards are. Otherwise, the shape of the inlet strip 26 can in particular be again as described above.
Landscapes
- Paper (AREA)
Abstract
Description
- Fig. 1
- eine rein schematische Teildarstellung eines Doppelsiebformers, aus, der sich der prinzipielle Grundaufbau eines solchen Doppelsiebformers ergibt,
- Fig. 2
- eine vergrößerte Darstellung des in Fig. 1 mit "A" bezeichneten Bereichs eines herkömmlichen Doppelsiebformers,
- Fig. 3
- eine vergrößerte Darstellung des in Fig. 1 mit "A" bezeichneten Bereichs eines erfindungsgemäßen Doppelsiebformers,
- Figur 4
- eine schematische Teildarstellung einer weiteren Ausführungsform eines erfindungsgemäßen Einlaufes in einen Doppelsiebbereich mit einem im Bereich der Einlaufleiste angeordneten Drucksensor,
- Figur 5
- eine schematische Ansicht der Einlaufleiste von unten,
- Figur 6
- eine schematische Teildarstellung einer weiteren Ausführungsform eines erfindungsgemäßen Einlaufes in einen Doppelsiebbereich mit einer Einlaufleiste, die über eine elastisch gedämpfte Lagerung am Grundkörper oder Gestell der Stützeinrichtung angebracht ist, und
- Figur 7
- eine schematische Teildarstellung einer weiteren Ausführungsform eines erfindungsgemäßen Einlaufes in einen Doppelsiebbereich, bei der die Einlaufleiste im Nasenbereich einen aus plastisch elastischem Material bestehenden vorspringenden Fortsatz aufweist.
- 10
- Doppelsiebformer
- 12
- Faserstoffsuspension
- 14
- Innensieb
- 16
- Außensieb
- 18
- Stoffeinlaufspalt
- 20
- Doppelsiebzone
- 22
- Formierwalze
- 24
- Stützeinrichtung, Saugkasten
- 26
- Einlaufleiste
- 28
- Nase
- 28'
- konvex gekrümmte Außenfläche
- 30
- Auflauffläche
- 31
- Pfeil
- 32
- Führungsfläche
- 32'
- gekrümmter Führungsflächenabschnitt
- 32''
- ebener Führungsflächenabschnitt
- 34
- Drucksensor
- 36
- Druckmeßbohrung
- 38
- Druckluft- oder Reinwasser-Anschluß
- 40
- Stahlfeder
- 42
- Gummi
- 44
- Gelenk
- 46
- resultierende Kräfte
- 48
- Fortsatz
- 50
- Strömungskräfte
- 52
- Löcher
- L
- Sieblaufrichtung
- FSa
- Außensiebspannung
- FSi
- Innensiebspannung
- RN
- Krümmungsradius der Nase
- R1
- Krümmungsradius der Auflauffläche
- R2
- Krümmungsradius des gekrümmten Führungsflächenabschnitts
- α
- Umlenkwinkel
Claims (20)
- Doppelsiebformer (10) zum Bilden einer Faserstoffbahn, insbesondere Papier- oder Kartonbahn, mit zwei umlaufenden endlosen Sieben (14, 16), die unter Bildung eines Stoffeinlaufspaltes (18) zusammenlaufen und eine Doppelsiebzone (20) bilden, in der die beiden Siebe (14, 16) gemeinsam insbesondere über eine mit dem inneren (14) der beiden Siebe (14, 16) in Kontakt kommende Formierwalze (22) sowie eine mit dem Außensieb (16) in Kontakt kommende Stützeinrichtung (24) geführt sind, die innerhalb der Schlaufe des Außensiebes (16) angeordnet und mit einer in Sieblaufrichtung (L) betrachtet vorderen Einlaufleiste (26) versehen ist, die eine vordere Nase (28) mit einer allgemein konvex gekrümmten Außenfläche (28') sowie eine sich in Sieblaufrichtung (L) daran anschließende Auflauffläche (30) für das Außen sieb (16) umfaßt,
dadurch gekennzeichnet,
daß die sich an die Nase (28) anschließende Auflauffläche (30) der Einlaufleiste (26) allgemein konvex gekrümmt ist und daß der minimale Krümmungsradius dieser Auflauffläche (30) größer ist als der der Nase (28). - Doppelsiebformer nach Anspruch 1,
dadurch gekennzeichnet,
daß das Außensieb (16) im Bereich der Einlaufleiste (26) insgesamt um einen Winkel (α) umgelenkt wird, der in einem Bereich von etwa 1° bis etwa 30° und vorzugsweise in einem Bereich von etwa 10° bis etwa 20° liegt. - Doppelsiebformer nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Einlaufleiste (28) im Anschluß an die Auflauffläche (30) eine Führungsfläche (32) für das Außensieb (16) aufweist. - Doppelsiebformer nach Anspruch 3,
dadurch gekennzeichnet,
daß die Führungsfläche (32) zumindest in einem an die Auflauffläche (30) angrenzenden Abschnitt (32') ebenfalls allgemein konvex gekrümmt ist und daß der minimale Krümmungsradius (R2) dieses Führungsflächenabschnitts (32') größer ist als der der Auflauffläche (30). - Doppelsiebformer nach Anspruch 4,
dadurch gekennzeichnet,
daß die Auflauffläche (30) und der sich daran anschließende Führungsflächenabschnitt (32') fließend ineinander übergehen. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Führungsfläche (32) im Anschluß an die Auflauffläche (32') bzw. im Anschluß an den gekrümmten Führungsflächenabschnitt (30) zumindest im wesentlichen eben ist. - Doppelsiebformer nach Anspruch 6,
dadurch gekennzeichnet,
daß der Übergang zwischen der Auflauffläche (30) und dem ebenen Führungsflächenabschnitt (32'') bzw. zwischen dem gekrümmten Führungsflächenabschnitt (32') und dem ebenen Führungsflächenabschnitt (32'') fließend ist. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Führungsfläche (32) im Anschluß an die Auflauffläche (30) bzw. im Anschluß an den gekrümmten Führungsflächenabschnitt (32') einen in Sieblaufrichtung (L) kontinuierlich größer werdenden Krümmungsradius aufweist. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Krümmungsradius (RN) der Nase (28) in einem Bereich von etwa 0,5 bis etwa 1 mm liegt. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Krümmungsradius (R1) der Auflauffläche (30) in einem Bereich von etwa 20 bis etwa 100 mm und vorzugsweise in einem Bereich von etwa 30 bis etwa 50 mm liegt. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Krümmungsradius (R2) des gekrümmten Führungsflächenabschnitts (32') in einem Bereich von etwa 100 bis etwa 1000 mm liegt. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Länge der Auflauffläche (30) in einem Bereich von etwa 10 bis etwa 20 mm liegt. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß Stützeinrichtung einen Saugkasten (24) umfaßt. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Auflauffläche (30) in Sieblaufrichtung (L) einen kontinuierlich größer werdenden Krümmungsradius (R1) aufweist, der vorzugsweise von etwa 30 mm bis etwa 100 mm ansteigt. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Übergang zwischen der gekrümmten Nase (28) und der gekrümmten Auflauffläche (30) fließend ist. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die mit der Einlaufleiste (26) versehene Stützeinrichtung (24) zur Beeinflussung des an der Einlaufleiste (26) vorherrschenden Flüssigkeitsdruckes verstellbar ist. - Doppelsiebformer nach Anspruch 16,
dadurch gekennzeichnet,
daß die Stützeinrichtung (24) so verstellbar ist, daß sich entsprechend die Eintauchtiefe ändert, mit der die Stützeinrichtung (24) in die berührende Sieblinie eintaucht. - Doppelsiebformer nach Anspruch 16 oder 17,
dadurch gekennzeichnet,
daß der Flüssigkeitsdruck über ein entsprechendes Ein- oder Verstellen der Stützeinrichtung (24) steuer- und/oder regelbar ist. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Einlaufleiste (26) über eine elastisch gedämpfte Lagerung (40 bis 44) am Grundkörper oder Gestell der Stützeinrichtung (24) angebracht ist. - Doppelsiebformer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Einlaufleiste (26) im Nasenbereich einen aus plastisch elastischem Material bestehenden vorspringenden Fortsatz (48) aufweist, der vorzugsweise so ausgeführt ist, daß er durch die auftretenden Strömungskräfte (50) in Anlage am Außensieb (16) gehalten ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19952936 | 1999-11-03 | ||
DE19952936A DE19952936A1 (de) | 1999-11-03 | 1999-11-03 | Doppelsiebformer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1098035A2 true EP1098035A2 (de) | 2001-05-09 |
EP1098035A3 EP1098035A3 (de) | 2001-07-04 |
EP1098035B1 EP1098035B1 (de) | 2004-07-21 |
Family
ID=7927799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00116920A Expired - Lifetime EP1098035B1 (de) | 1999-11-03 | 2000-08-05 | Doppelsiebformer |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1098035B1 (de) |
DE (2) | DE19952936A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010015575A1 (de) * | 2008-08-08 | 2010-02-11 | Voith Patent Gmbh | Verfahren zum beeinflussen von mindestens einer betriebs- und/oder qualitätseigenschaft bei der herstellung einer faserstoffbahn und blattbildungssystem zur durchführung des verfahrens |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990015899A1 (de) * | 1989-06-21 | 1990-12-27 | Gustav Reinhard Gmbh & Co. Kg | Verfahren zur entwässerung eines wasserhaltigen faservlieses auf langsieb-papiermaschinen und zugehörige entwässerungseinheit |
WO1995027823A1 (en) * | 1994-04-12 | 1995-10-19 | Jwi Ltd. | Improved formation in a two fabric paper machine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3222428C2 (de) * | 1982-06-15 | 1985-04-04 | Sulzer-Escher Wyss GmbH, 7980 Ravensburg | Doppelsieb-Papiermaschine |
DE4332162C2 (de) * | 1993-09-22 | 1994-12-01 | Voith Gmbh J M | Doppelsiebformer einer Papiermaschine |
-
1999
- 1999-11-03 DE DE19952936A patent/DE19952936A1/de not_active Withdrawn
-
2000
- 2000-08-05 DE DE50007117T patent/DE50007117D1/de not_active Expired - Lifetime
- 2000-08-05 EP EP00116920A patent/EP1098035B1/de not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990015899A1 (de) * | 1989-06-21 | 1990-12-27 | Gustav Reinhard Gmbh & Co. Kg | Verfahren zur entwässerung eines wasserhaltigen faservlieses auf langsieb-papiermaschinen und zugehörige entwässerungseinheit |
WO1995027823A1 (en) * | 1994-04-12 | 1995-10-19 | Jwi Ltd. | Improved formation in a two fabric paper machine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010015575A1 (de) * | 2008-08-08 | 2010-02-11 | Voith Patent Gmbh | Verfahren zum beeinflussen von mindestens einer betriebs- und/oder qualitätseigenschaft bei der herstellung einer faserstoffbahn und blattbildungssystem zur durchführung des verfahrens |
Also Published As
Publication number | Publication date |
---|---|
DE50007117D1 (de) | 2004-08-26 |
EP1098035A3 (de) | 2001-07-04 |
DE19952936A1 (de) | 2001-05-10 |
EP1098035B1 (de) | 2004-07-21 |
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