EP0899376A2 - Blattbildungssystem mit Formatschildern - Google Patents
Blattbildungssystem mit Formatschildern Download PDFInfo
- Publication number
- EP0899376A2 EP0899376A2 EP98114697A EP98114697A EP0899376A2 EP 0899376 A2 EP0899376 A2 EP 0899376A2 EP 98114697 A EP98114697 A EP 98114697A EP 98114697 A EP98114697 A EP 98114697A EP 0899376 A2 EP0899376 A2 EP 0899376A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- format
- fourdrinier
- machine
- sieve
- sheet formation
- 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 28
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 230000002093 peripheral effect Effects 0.000 claims abstract 2
- 230000015572 biosynthetic process Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 15
- 239000000123 paper Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 239000011111 cardboard Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 abstract description 5
- 239000004744 fabric Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000003313 weakening effect Effects 0.000 description 5
- 239000004033 plastic Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000035508 accumulation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- D21F1/56—Deckle frame arrangements
Definitions
- the invention relates to a sheet formation system Fourdrinier paper machine or Fourdrinier paperboard machine according to the preamble of claim 1 and a Process for the reduction of edge waves according to the Preamble of claim 9.
- the sieve After the point of impact of the fabric suspension jet the sieve shows the material suspension at the edges of the Siebes the tendency to run sideways. For this Basically in the border area of the sieves after the nozzle of the headbox so-called format plates attached, the lateral run of the Stock suspension and thus a dilution of ultimately emerging paper web in this area should prevent.
- Such a format label is for example from the German published application DE 43 34 641 A1 known, the content of which is hereby fully disclosed in this registration is included.
- the task of this invention shown there is a constant accumulation of fiber layers, which can be found in the Edge areas of the flowing pulp suspension by drying and then bonded into the peel fresh fiber suspension, to avoid.
- spray spray fountain format plates it is proposed in the area of Spray spray fountain format plates to provide the Surfaces of the format plates with a flowing Cover water film so that such Drying of fiber accumulations is avoided.
- the format label itself consists of a flat one Ledge by hollow profiles in their Directional stability is stiffened and their Alignment points exactly in the machine direction.
- the known Sheet forming system of a Fourdrinier machine especially the format plates of the sheet formation system to develop further in such a way that the formation of Edge waves reduced, or as far as is avoided as possible.
- the first task to improve the Sheet formation system is characterized by the characteristics of the Claim 1 solved.
- the second task for Description of a method for reducing Edge waves is characterized by the features of claim 9 solved.
- the marginal problem in the sheet formation system is one Problem at the interface between headbox and Wire section. It includes the guidance of the free jet and the associated reflection waves and a part the format limit for sheet formation. Due to the Improvement of the transverse profiles of the paper web through the recent developments in the field of headbox, which allow a sectioned material density regulation, marginal problems have a significantly more negative effect than so far. The causes of these edge waves or Reflection waves can have different causes.
- edge waves are caused by edge effects, which is in the form of an arc at the top Express the format sign of the secondary currents. Due to the large wetted areas, the flow in the Edge area braked considerably and decreases due to the Continuity conditions a larger space in Claim. This way, the slower blocks Edge flow of the main flow, which emerges at the nozzle outlet approximately with outlet width, on the length of the Format label increasingly the desired Flow direction. The consequence is necessarily a local one Beam deflection towards the center of the machine, which as Reflection wave appears.
- This problem is particularly slow-moving Machines affected with large stomata operate.
- the reflection waves have enough here Time to sit on the Fourdrinier in the to expand the production-relevant area of the railway.
- the different effects are with fast machines a little weaker, but basically the same available.
- the secondary flows can be different Effects arise:
- the bezel must have a certain undersize, which creates a gap between the cover and the format label. This should ideally be about 0.15 mm, but 0.25 mm do not exceed.
- the groove of the panel seal cannot be brought up to the tip of the panel.
- a Self-sealing in this area by fibers, especially with faster machines, is due to the prevailing high pressure there difficult.
- the Secondary flow on the format label can cause problems such as Spraying, contamination of the wire section and Braids appear. This can be significant Cause disturbances, especially if the gap, for example, by a not centered Aperture position, too large.
- Another way to create Secondary flows can be caused by shaking the sieve be given.
- shaking the sieve Stock suspension speed components in Imprinted transverse direction with a Format limitation the impulses arising here be reflected and in the form of an edge wave Run in the middle of the web.
- the essential element of the invention is that the inventors recognized that the Reflection waves or edge waves reduced can be if the secondary flow has room for one lateral expansion is given.
- Another option is to use the unwanted secondary flow through the To give space to the format label contour and thus the Main flow not to narrow or not to redirect towards the center of the machine.
- This can for example with an adjustable format label will be realized.
- the Flow shortly after exiting the nozzle to be influenced.
- the secondary flows which are previously arched upwards on the format label trained, are discharged laterally, Reflection waves are reduced respectively purposefully steered closer to the edge without the goal the format limit is abandoned.
- the Adjust the format label so that with increasing distance from the headbox Change, preferably a broadening of for the area available for the stock suspension arises.
- Such a new format label can consist of several parts, preferably be carried out in two parts, from The format limit from one end of the table plate component that can be specifically bent by clamping elements, preferably a plastic element.
- the maximum adjustability also perpendicular to Sieve surface can the format label very close to that Sieve (preferably about 0.5 mm) are placed.
- a known one Sheet forming system of a fourdrinier paper machine or Fourdrinier board machine with a headbox, at least one rotating sieve and at least two, attached to the edge of the sieve Further develop format signs in such a way that the Side shields are designed or attached in such a way that the clear distance of the side shields at least over a substantial part of their length in Machine direction can increase.
- the side shields can be advantageous seen at least in sections in the machine direction train elastic.
- the elastic training of the Format label can for example by perpendicular to Weakening of the material thickness of the Format label or by a replacement in places of the material through a particularly elastic material such as plastic or rubber.
- the format label can also move can be achieved if it has at least one joint is provided, the axis of which is substantially perpendicular or is also slightly inclined to the sieve level.
- a device for deforming the side shields is provided at least in the machine direction.
- This Embodiment can be further developed by that at least one of the devices for deformation the side shields with a tensile and / or compressive force at least one directional component transverse to Exercises machine direction and / or that at least one of the devices for deforming the format plates a lever arm arranged on the side of the format label attacks and a tensile and / or compressive force with at least one directional component in Machine direction.
- a method is also used to reduce edge waves in a Sheet forming system of a fourdrinier paper machine or Fourdrinier board machine in the field of Material suspension application on a rotating sieve proposed, in order to limit the sheet forming a mechanical side boundary is used, the area available for the stock suspension increasing in the machine direction, continuously changed, preferably widened.
- Figure 1 is a partial view of a Sheet formation system shown in longitudinal section.
- On on the left is the nozzle area of the Headbox 1 with the lower lip 2 and the aperture 3 shown above.
- the Nozzle gap between the aperture 3 and the lower lip 2 the stock suspension is pushed through and hits in Beam impact point 6 on the sieve 10 below on.
- the screen 10 runs over a breast roll 12 a horizontally running sieve table 11.
- over the fabric suspension layer is characterized by a variety of Arrows the secondary flow 5, which is in this Area builds up, shown.
- the Figure the format label 9 attached to the side his wall area over a dried one Fabric area 7 and a wet area underneath 8 has.
- FIG. 2 The cross section A indicated in FIG. 1 is in FIG Figure 2 shown.
- This Figure 2 shows a section through the sieve 10 below, the format label 9, that is adjusted at a distance 14 from the running sieve 10 is.
- Material suspension layer 4 can be seen that the Side of the format label through the secondary flow 5 builds up and shows the tendency on the side wall of the Crawl upwards.
- This tendency of the current to creep up reduced This happens because of the gap 14 a derivative of the pressure pulse that normally runs against the format label 9 and is reflected there is avoided.
- the pressure pulse respectively a substantial part of the pressure pulse can be due to this Escape way between sieve 10 and 9 format label.
- Figure 3 shows the Area of Figure 1 in plan view. Going from above the nozzle area of the headbox 1 can be seen, which has a side wall 15 on which the inventive format label 9 with a Adjustment device 20 is attached.
- the format label 9 is in this example of two connected Segments 9.1 and 9.2 built up, each over one relatively thick-walled main area and a thinner one and thus have elastic transition region 26.
- the thick-walled main areas themselves have side arms 9.3 and 9.4 that again in the machine direction on adjusting rods 16.1 and 16.2 are attached.
- Adjustment rods result in elastic deformation the format label in the area of the thinner version (lower section modulus).
- the format label moves slightly to the direction of the paper web and can thus be used for the undisturbed flow of the Provide material suspension necessary space, without changing the suspension height.
- This format label is dashed by lines 17 shown.
- This format label can preferably be made from Made of plastic or stainless steel become.
- the elastic regions 26 can Gain elasticity by weakening the Material thickness is generated in this area 26.
- Figure 4 shows a side view of this Embodiment of a format label according to the invention, the longitudinal adjustment of the format label over the Adjustment rods 16.1 and 16.2 can be clearly seen.
- the Format label itself is with a screw connection the adjusting screws 18.1, 18.2 and 18.3 on the Side wall 15 of the headbox attached.
- adjusting screws 18.1, 18.2 and 18.3 can be the angle of the format label to Sieve level can be set (swivel angle 24).
- the Adjusting screw 19 the distance of the format label 9 from sieve 10 below it can be adjusted (Distance adjustment 25).
- Gap 14 between format label 9 and sieve 10 in adjust in any way, whereby by the Angle adjustment also different gap heights 14 over the length of the format label can. Furthermore, 16.1 and 16.2 the bend of the format label in Machine direction set in the desired way become.
- the section A-A of Figure 4 is in Figure 5, using the same reference numerals, shown.
- one format label according to the invention compared to the stand technology a significant reduction in the edge waves reached at the beginning of the sheet formation system and thus produces an overall improved paper quality become.
Landscapes
- Paper (AREA)
Abstract
Description
- Figur 1:
- Längsschnitt im Bereich des Strahlauftreffpunktes des Blattbildungsbereiches;
- Figur 2:
- Schnitt A aus Figur 1;
- Figur 3:
- Draufsicht auf ein erfindungsgemäßes Formatschild;
- Figur 4:
- Seitenansicht des erfindungsgemäßen Formatschildes;
- Figur 5:
- Schnitt A-A aus Figur 4.
- 1
- Stoffauflauf
- 2
- Unterlippe
- 3
- Blende
- 4
- Stoffsuspensionsschicht
- 5
- Sekundärströmung
- 6
- Druckimpuls am Strahlauftreffpunkt
- 7
- angetrockneter Stoffbereich
- 8
- nasser Bereich
- 9
- Formatschild
- 9.1, 9.2
- Segmente
- 9.3, 9.4
- Ausleger
- 10
- Sieb
- 11
- Siebtisch
- 12
- Brustwalze
- 14
- Spalt
- 15
- Seitenwand
- 16.1, 16.2
- Justierstangen
- 17
- Linie
- 18.1, 18.2, 18.3
- Justierschrauben zur Winkelverstellung
- 19
- Justierschraube zur Abstandsverstellung
- 20
- Justiervorrichtung
- 21
- "entlassener" Druckimpuls
- 22
- reflektierter Druckimpuls
- 23
- Dichtung
- 24
- Schwenkwinkel
- 25
- Abstandsverstellung
- 26
- Schwächungsbereich
Claims (11)
- Blattbildungssystem einer Langsiebpapier- oder Langsiebkartonmaschine mit einem Stoffauflauf (1), mindestens einem umlaufenden Sieb (10) und mindestens zwei, jeweils im Randbereich des Siebes (10) angebrachten Formatschilden (9), wobei der Stoffauflauf (1) über eine Düse einen maschinenbreiten Stoffsuspensionsstrahl erzeugt und zwischen den Formatschilden (9) auf ein Sieb (10) aufbringt,
dadurch gekennzeichnet, daß
die Formatschilde (9) derart ausgebildet und/oder befestigt sind, daß der lichte Abstand der Formatschilde von der Mittellinie des Siebes zumindest über einen wesentlichen Teil ihrer Länge in Maschinenrichtung einstellbar ist. - Blattbildungssystem gemäß dem Oberbegriff des Anspruches 1 oder gemäß Anspruch 1, dadurch gekennzeichnet, daß mindestens eines der Formatschilde (9) über Mittel (18.1, 18.2, 18.3) verfügt, die eine Winkelverstellung um eine Achse parallel zur Querrichtung der Maschine erlauben.
- Blattbildungssystem gemäß dem Oberbegriff des Anspruches 1 oder gemäß einem der Ansprüche 1-2, dadurch gekennzeichnet, daß mindestens eines der Formatschilde (9) über Mittel (19) verfügt, die eine Abstandverstellung, vorzugsweise parallel, zum darunter verlaufenden Sieb erlauben.
- Blattbildungssystem gemäß dem Oberbegriff des Anspruches 1 oder gemäß einem der Ansprüche 1-3, dadurch gekennzeichnet, daß die Formatschilde (9) zumindest streckenweise in Maschinenrichtung elastisch ausgebildet sind.
- Blattbildungssystem gemäß dem Oberbegriff des Anspruches 1 oder gemäß einem der Ansprüche 1-4, dadurch gekennzeichnet, daß die Formatschilde (9) mindestens ein Gelenk aufweisen, dessen Achse im wesentlichen senkrecht zur Siebebene steht.
- Blattbildungssystem gemäß einem der Ansprüche 1-5, dadurch gekennzeichnet, daß an den Formatschilden (9) jeweils mindestens eine Vorrichtung zu Verformung (16.1, 16.2, 9.3, 9.4) der Formatschilde zumindest in Maschinenrichtung vorgesehen ist.
- Blattbildungssystem gemäß Anspruch 6, dadurch gekennzeichnet, daß mindestens eine der Vorrichtungen zur Verformung (16.1, 16.2, 9.3, 9.4) der Formatschilde eine Zug- und/oder Druckkraft mit zumindest einer Richtungskomponente quer zur Maschinenrichtung ausübt.
- Blattbildungssystem gemäß einem der Ansprüche 6-7, dadurch gekennzeichnet, daß mindestens eine der Vorrichtungen zur Verformung (16.1, 16.2, 9.3, 9.4) der Formatschilde an einem seitlich am Formatschild angeordneten Hebelarm angreift und eine Zug- und/oder Druckkraft mit zumindest einer Richtungskomponente in Maschinenrichtung ausübt.
- Verfahren zur Reduktion von Randwellen bei einem Blattbildungssystem einer Langsiebpapier- oder Langsiebkartonmaschine im Bereich der Stoffsuspensionsaufgabe auf ein umlaufendes Sieb, bei dem zur Randbegrenzung des sich bildenden Blattes eine mechanische Seitenbegrenzung benutzt wird, dadurch gekennzeichnet, daß im Randbereich der Blattbildung die für die Stoffsuspension zur Verfügung stehende Fläche in Maschinenrichtung verändert wird.
- Verfahren gemäß dem Oberbegriff des Anspruches 9 oder gemäß Anspruch 9, dadurch gekennzeichnet, daß der Abstand des Formatschildes (9) von der Sieboberfläche derart eingestellt wird, daß ein wesentlicher Teil der auftretenden Querimpulse durch den Spalt (14) zwischen Sieb (10) und Formatschild (9) entweichen kann.
- Verfahren gemäß einem der Ansprüche 9-10, dadurch gekennzeichnet, daß die Verbreiterung der für die Stoffsuspension zur Verfügung stehende Fläche in Maschinenrichtung, im wesentlichen entsprechend den Regeln der Kontinuitätsgleichung für inkompressible Flüssigkeiten, nach Maßgabe der sich ändernden Fließgeschwindigkeit vergrößert wird, um die Schichthöhe der Stoffsuspension im Randbereich konstant zu halten.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19737646A DE19737646A1 (de) | 1997-08-29 | 1997-08-29 | Blattbildungssystem mit Formatschilden |
DE19737646 | 1997-08-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0899376A2 true EP0899376A2 (de) | 1999-03-03 |
EP0899376A3 EP0899376A3 (de) | 1999-11-17 |
EP0899376B1 EP0899376B1 (de) | 2003-05-14 |
Family
ID=7840532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98114697A Expired - Lifetime EP0899376B1 (de) | 1997-08-29 | 1998-08-05 | Blattbildungssystem mit Formatschildern |
Country Status (3)
Country | Link |
---|---|
US (1) | US6214169B1 (de) |
EP (1) | EP0899376B1 (de) |
DE (2) | DE19737646A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1681390A1 (de) * | 2005-01-14 | 2006-07-19 | Vaahto OY | Vorrichtung in einer Papier- oder Kartonmaschine zum Begrenzen des Faserstoffstroms von dem Stoffauflauf |
DE102009000497A1 (de) | 2009-01-30 | 2010-08-05 | Voith Patent Gmbh | Blattbildungssystem für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102009000502A1 (de) | 2009-01-30 | 2010-08-05 | Voith Patent Gmbh | Blattbildungssystem für eine Maschine zur Herstellung einer Faserstoffbahn |
WO2011086231A1 (en) * | 2010-01-15 | 2011-07-21 | Metso Paper, Inc. | Device for a web forming section of a fiber web machine |
WO2020030352A1 (de) * | 2018-08-06 | 2020-02-13 | Voith Patent Gmbh | Verfahren zur reduktion von randwellen bei einem blattbildungssystem sowie blattbildungssystem |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8236139B1 (en) * | 2008-06-30 | 2012-08-07 | International Paper Company | Apparatus for improving basis weight uniformity with deckle wave control |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4334641A1 (de) * | 1992-10-09 | 1994-04-28 | Westvaco Corp | Spülfontäne für die Randbegrenzungseinrichtung einer Papiermaschine |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE500956C (de) * | 1930-07-19 | J M Voith Maschinenfabrik | Langsiebpapier-, Karton- oder Pappenmaschine, bei der die Begrenzung der Stoffbahn durch zwei in der Breite verstellbare Begrenzungsstreifen und durch Wasserstrahlen erfolgt | |
US1734929A (en) * | 1926-06-28 | 1929-11-05 | Vedder John Warren | Paper-making machine |
US3150035A (en) * | 1961-12-22 | 1964-09-22 | Nalco Chemical Co | Treatment of fourdrinier wire |
US3281314A (en) * | 1964-02-21 | 1966-10-25 | Fitchburg Paper | Stock flow apron for a fourdrinier wire |
US3607624A (en) * | 1969-08-22 | 1971-09-21 | Nekoosa Edwards Paper Co Inc | Self-cleaning deckle rail for papermaking machines |
FR2128252A1 (en) * | 1971-03-09 | 1972-10-20 | Sogreah | Paper making machine - has guides bordering filtration screen to limit the width of the web |
DE2549726B2 (de) * | 1975-11-06 | 1980-04-17 | J.M. Voith Gmbh, 7920 Heidenheim | Maschine zum Herstellen von Faserbahnen |
US4738751A (en) * | 1985-12-18 | 1988-04-19 | Appleton Specialty Products, Inc. | Fabric edge support apparatus for fourdrinier paper machine |
US4968387A (en) * | 1990-01-23 | 1990-11-06 | Westvaco Corporation | Papermachine deckle means |
JPH03249297A (ja) * | 1990-02-26 | 1991-11-07 | Mitsubishi Heavy Ind Ltd | 抄紙機ヘッドボックスの流向調整方法 |
-
1997
- 1997-08-29 DE DE19737646A patent/DE19737646A1/de not_active Withdrawn
-
1998
- 1998-08-05 EP EP98114697A patent/EP0899376B1/de not_active Expired - Lifetime
- 1998-08-05 DE DE59808331T patent/DE59808331D1/de not_active Expired - Lifetime
- 1998-08-27 US US09/141,339 patent/US6214169B1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4334641A1 (de) * | 1992-10-09 | 1994-04-28 | Westvaco Corp | Spülfontäne für die Randbegrenzungseinrichtung einer Papiermaschine |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1681390A1 (de) * | 2005-01-14 | 2006-07-19 | Vaahto OY | Vorrichtung in einer Papier- oder Kartonmaschine zum Begrenzen des Faserstoffstroms von dem Stoffauflauf |
DE102009000497A1 (de) | 2009-01-30 | 2010-08-05 | Voith Patent Gmbh | Blattbildungssystem für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102009000502A1 (de) | 2009-01-30 | 2010-08-05 | Voith Patent Gmbh | Blattbildungssystem für eine Maschine zur Herstellung einer Faserstoffbahn |
WO2011086231A1 (en) * | 2010-01-15 | 2011-07-21 | Metso Paper, Inc. | Device for a web forming section of a fiber web machine |
CN102713056A (zh) * | 2010-01-15 | 2012-10-03 | 美卓造纸机械公司 | 用于纤维幅材机的幅材成形部的装置 |
EP2524083A1 (de) * | 2010-01-15 | 2012-11-21 | Metso Paper, Inc. | Vorrichtung für einen vliesformungsabschnitt einer faservliesmaschine |
EP2524083A4 (de) * | 2010-01-15 | 2013-05-29 | Metso Paper Inc | Vorrichtung für einen vliesformungsabschnitt einer faservliesmaschine |
WO2020030352A1 (de) * | 2018-08-06 | 2020-02-13 | Voith Patent Gmbh | Verfahren zur reduktion von randwellen bei einem blattbildungssystem sowie blattbildungssystem |
CN112534097A (zh) * | 2018-08-06 | 2021-03-19 | 福伊特专利有限公司 | 在片材成形系统中减少边缘波的方法和片材成形系统 |
CN112534097B (zh) * | 2018-08-06 | 2023-04-14 | 福伊特专利有限公司 | 在片材成形系统中减少边缘波的方法和片材成形系统 |
Also Published As
Publication number | Publication date |
---|---|
DE19737646A1 (de) | 1999-03-04 |
US6214169B1 (en) | 2001-04-10 |
EP0899376B1 (de) | 2003-05-14 |
EP0899376A3 (de) | 1999-11-17 |
DE59808331D1 (de) | 2003-06-18 |
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