EP0889162B1 - Section de formage - Google Patents

Section de formage Download PDF

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Publication number
EP0889162B1
EP0889162B1 EP98108651A EP98108651A EP0889162B1 EP 0889162 B1 EP0889162 B1 EP 0889162B1 EP 98108651 A EP98108651 A EP 98108651A EP 98108651 A EP98108651 A EP 98108651A EP 0889162 B1 EP0889162 B1 EP 0889162B1
Authority
EP
European Patent Office
Prior art keywords
upper lip
pressure
wire
former according
support
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.)
Expired - Lifetime
Application number
EP98108651A
Other languages
German (de)
English (en)
Other versions
EP0889162A2 (fr
EP0889162A3 (fr
Inventor
Günter Dr. Halmschlager
Herbert Haunlieb
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 Paper 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
Priority claimed from DE1997127929 external-priority patent/DE19727929A1/de
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0889162A2 publication Critical patent/EP0889162A2/fr
Publication of EP0889162A3 publication Critical patent/EP0889162A3/fr
Application granted granted Critical
Publication of EP0889162B1 publication Critical patent/EP0889162B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21F1/04—Head boxes of cylinder machines
    • D21F1/046—Head boxes of cylinder machines with non-immersed cylinder

Definitions

  • the invention relates to a former with a sieve, preferably is designed as a circular screen, between the screen and an upper lip formed by a current carrying wall adjustable outlet gap for exits from a chamber Fibrous suspension is formed, the upper lip using a print medium both towards the screen and into the opposite direction is adjustable.
  • Such a former is essentially from DE 31 25 278 A1 known.
  • a sheet formation zone is formed in which the fiber suspension from a feed channel into a gap between a circular sieve and a flow guide wall under pressure.
  • the beginning of the gap is between a lower lip and defines an upper lip, while at the end of the gap an exit gap between the sieve and the upper lip.
  • the upper lip consists of individual elements that are articulated are interconnected. For setting the outlet gap there is a fixed stop against which the Upper lip with the help of a hydraulic bellows is deliverable.
  • the known arrangement has the disadvantage that the outlet gap is fixed by the fixed stop and is therefore a consequence various influencing parameters, such as a runout of the sieve, changes in the composition of the fiber suspension and feed pressure, etc. Changes in sheet thickness can result.
  • the upper lip can be with the Also move imperfections of the circular sieve so that the outlet gap remains relatively constant.
  • a former of a similar type is known from US-A-3,645,843.
  • the outlet gap is limited by an upper lip that fixed pivotably on its side facing the chamber is and on its side facing away from the chamber by means of a Print medium is deliverable in the direction of the screen.
  • European patent application EP 0 106 593 A2 discloses a former with a sieve between the sieve and one formed by a current carrying wall Upper lip an adjustable outlet gap for out of one Chamber emerging fibrous suspension is formed, the Upper lip can be fed onto the screen using a pressure medium is and wherein the upper lip by means of the pressure medium in both towards the screen as well as in the opposite direction is adjustable.
  • the disclosed former has the disadvantage that the system very complex and prone to malfunction to regulate the print medium, especially with regard to those in a paper or Carton factory prevailing operating conditions, is designed. This means that this former is also a permanent, sensitive one The drainage pressure was not set.
  • the invention is therefore based on the object of an improved Create shaper where the drainage pressure is independent of variations in the various influencing parameters largely can be kept constant and a sensitive attitude the drainage pressure is made possible.
  • this object is achieved in a former according to the type mentioned solved in that the upper lip on at least their first end facing away from the chamber with the help two pressure hoses floating, a first of the two pressure hoses when a pressure medium is applied Force to adjust toward the strainer, and one second of the two pressure hoses when pressure medium is applied exerts an opposite force.
  • the two Pressure hoses preferably extend parallel to Web running direction in the axial direction of the former. However, too other geometrical arrangements of the pressure hoses conceivable.
  • the upper lip at its second end facing the chamber supported by means of a floating medium.
  • the upper lip is on its second end between at least two pressure hoses swimming led.
  • the upper lip attached to a stiffening element that is on its first Is guided by means of the two pressure hoses and on its second end pivotally attached to the pivot axis is.
  • a stationary one fixable carrier provided on the first, facing the screen Side with a spacer to the stiffening element a first pocket for receiving the first pressure hose is formed and on its second side facing away from the sieve with a bracket rigidly connected to the stiffening element a second pocket for receiving the second pressure hose is formed is.
  • the stiffening element a multitude across the entire width of the former of stiffening ribs, each with a swivel bearing is assigned for support on the carrier.
  • This measure can be used in addition to the defined setting of the exit gap also the entry gap of the fiber suspension change the sheet thickness immediately to influence.
  • the chamber from which the fiber suspension in the inlet gap between Upper lip and lower lip emerge on the back of the sieve end facing away from a flexible wall is
  • one of the Pressure hoses when the pressure medium is applied Force to move towards the screen and another the pressure hoses when the pressure medium is applied an opposite force.
  • the Pressure hoses extend parallel to the web running direction in the axial direction of the former.
  • an adjustable one Stop for the upper lip provided for a feed movement limit the upper lip towards the sieve.
  • the upper lip is on their second end across a variety of across the machine width distributed swivel bearings supported on a cross strut, with the help of two pairs running side by side Pressure hoses are supported on the carrier, which is in pockets between the cross strut and the support on the side facing the sieve Side and in pockets between the cross strut and with the support rigidly connected to the support on the sieve run away from the side.
  • a further advantageous embodiment of the invention is between the first end of the stiffening element facing away from the chamber and one rigidly connected to a carrier Bracket a bag facing the sieve to hold a pressure hose formed and between the carrier and the stiffening element a pocket facing away from the sieve a pressure hose is formed.
  • At least one displacement sensor for determining the position of the Upper lip at its first end and / or at its second end intended.
  • the displacement sensor can be used with the threaded spindle or with one of the Be pivot bearing coupled.
  • This measure has the advantage that a basic setting of the Distance between upper lip and stiffening element without previous Removal of the bracket is made possible.
  • Threaded spindle provided, the support and the stiffening element interspersed and in a threaded portion of the stiffening element and the upper lip engages.
  • Threaded spindles can be provided.
  • the stiffening element provided with a variety of stiffening ribs, which are uniform over the entire width of the former Distances are arranged and each have a pivot bearing assigned for support.
  • a cross distribution pipe provided that rigidly connected to the carrier via struts is, and which can be tempered such that the carrier is free of deflection remains.
  • a former according to the invention is overall with the Number 10 denotes.
  • the former 10 comprises a forming roll, only the screen 12 in the area of the sheet formation zone is shown.
  • the fiber suspension emerges a chamber 26, which is also referred to as a mixing chamber, via an entry gap 20 which is between a lower lip 36 and an upper lip 16 is formed in a gap between the Sieve 12 and the upper lip 16, the upper end of an outlet gap 14 specifies.
  • the upper lip 16 with screw connections 39, 40, 41 above the pivot axis 22.1 and with screw connections 42 below the pivot axis 22.1 on the stiffening element 18 attached which consist of a rectangular bracket can.
  • a stable support 50 with the base body 54 screwed.
  • a support wall 56 on the Screen 12 facing away from the side which is approximately isosceles V-shaped tub with an obtuse opening angle is that with both legs in the area of the lower end and abuts the carrier 50 in the region of the upper end thereof and on which other attachments are attached.
  • Fibrous suspension is fed into the mixing chamber 26 via numerous arranged next to one another across the width of the former 10 Lines 28 fed from below, into the one channel 34 extending laterally on the support wall 26 via valves 32 and dilution water lines 30 that are in a particular Open angle in the lines 28, dilution liquid is fed so as to the mixing chamber pulp suspension in the desired concentration to set the desired Area weight profile to supply.
  • the mixing chamber 26 is on its rear, facing away from the screen 12 End through a flexible wall 38 in the form of a plastic lip sealed in a dovetail guide 37 is fixed to the base body 54 and in a groove 43 on the opposite Wall element is held.
  • a flexible wall 38 in the form of a plastic lip sealed in a dovetail guide 37 is fixed to the base body 54 and in a groove 43 on the opposite Wall element is held.
  • the pivot axis 22.1 itself is through an adjustment device 24 adjustable by means of an adjusting spindle, so as to adjust the distance to be able to adjust the upper lip 16 from the lower lip 36, whereby the width of the inlet gap 20 is fixed.
  • a spacer 46 is provided, wherein between the carrier 52, the bracket 44 at the top and the Spacer 46 a pocket 58 is formed, within which the first pressure hose 47 is enclosed.
  • a further pocket 59 is formed between the latter and the approximately L-shaped bracket 44, the short leg of which at the outer end is additionally also somewhat directed towards the screen 12, within which the second pressure hose 48 is arranged is.
  • the first pressure hose 47 is pressurized by a pressure source 61 via a control device 60, while the second pressure hose 48 is also pressurized by a pressure source 63 via a control device 62.
  • Air is preferably used as the pressure medium.
  • the outer pressure hose 48 becomes constant Pressure operated while the inner pressure hose 47 after is automatically controlled according to the respective operating conditions, to keep the drainage pressure in the outlet gap 14 constant.
  • the control device 62 of the outer pressure hose 48 is designed such that an emergency lifting of the upper lip 16 from Sieve 12 when an accident occurs, that is about when it occurs of coarse impurities in the fiber suspension, is made possible.
  • the size of the outlet gap 14 in normal operation and the drainage pressure by the pressure difference between the two pressure hoses 47, 48 are set in a defined manner.
  • a stop 65 is provided, which is only is indicated schematically by the number 65 and which is approximately by means of a lead screw is adjustable to a minimum Determine size of the outlet gap 14, up to which a pivoting the upper lip 16 in the direction of the sieve 12 maximally is possible.
  • Such a minimal size of the outlet gap should be used for standstill and for starting operation of the former are observed in order to avoid damage to the screen 12, if there is no drainage pressure yet.
  • the former 10a comprises a forming roll, of which the screen 12 in Area of the sheet formation zone is shown.
  • the pulp suspension from a chamber 26, which is also called Mixing chamber is called, via an inlet gap 20, the formed between a lower lip 36 and an upper lip 16 is, between the sieve 12 and the upper lip 16, on upper end of an outlet gap 14 between the screen 12 and the upper lip 16 is set.
  • a carrier 50 which at its lower end with the Base body 54 is screwed. With the carrier 50 are also Support walls 56 and 57 connected on the side facing away from the screen 12, whereby an approximately V-shaped trough is formed, the with both legs in the area of the lower end and the upper end of the carrier 50 abuts against this, and on the other attachments are attached.
  • Fibrous suspension is fed into the mixing chamber 26 via numerous arranged next to one another across the width of the former 10 Lines 28 fed from below, into the one channel or transverse distribution pipe running laterally on the supporting wall 57 34 via valves 32 and dilution water lines 30, which open into the lines 28 at a certain angle, Dilution liquid is supplied so as to section 26 of the chamber Fibrous suspension in the desired concentration for setting the desired area weight profile supply.
  • first pressure hose 47 At the upper end or first end 84 of the stiffening element 18 an approximately 44 L-shaped bracket 44 is screwed on, which projects outwards from the stiffening element 18 and engages around the upper end of the carrier 50.
  • an approximately 44 L-shaped bracket 44 is screwed on, which projects outwards from the stiffening element 18 and engages around the upper end of the carrier 50.
  • On the screen 12 facing Side of the carrier 50 is between the carrier 50 and the stiffening element 18 formed a pocket 58 inside a first pressure hose 47 is enclosed.
  • Both Pressure hoses 47, 48 can be from a pressure source 61, 63 via a control device 60, 62 with pressure, e.g. with compressed air, be charged.
  • the first end 84 of the stiffening element 18 is at the end the upper lip 16 connected via a threaded bolt 39 which in a threaded blind hole engages at the upper end of the upper lip 16. This allows a basic setting of the outlet gap 14 or make a desired profile across the web width preset.
  • the stiffening element 18 At the first end facing the chamber 26 is the stiffening element 18, with which the upper lip 16 through various screw connections 40, 41, 42 is connected via a variety of pivot bearings 22.2 distributed over the web width, which over 'Bolt 23 are connected to the stiffening element' 18 with Supported by the pressure hoses 70, 71, 72, 73 on the carrier 50.
  • the bolts 23 are connected to a cross strut 86, which runs parallel to the beam 50 over the machine width.
  • a cross strut 86 which runs parallel to the beam 50 over the machine width.
  • two pockets 66 and 67 formed in which pressure hoses 70 and 71 run while on the side facing away from the screen 12 between the cross strut 86 and a support element 74 connected to the carrier 50 further pockets 68, 69 are formed, in which in turn pressure hoses 72, 73 run.
  • the pressure hoses 70, 71 are off a pressure source 75 via a control device 76 with pressure acted upon, and the pressure hoses 72, 73 are made of the same Pressure source 75 via a control device 77 with pressure acted upon.
  • the stiffening element 18 is in a variety of itself Vertical stiffening ribs 19 are provided, across the entire width of the machine at regular intervals of preferably about 30 cm are arranged. Any stiffening rib 19 is a pivot bearing 22.2 with a bolt 23 for support on the cross strut 86 via the pressure hoses 70, 71, 72, 73 assigned.
  • the position of the upper lip 16 on both upper end as well as measured at its lower end for which purpose a displacement transducer 80 is provided which detects the position of the Strap 44 detects and for which a further displacement transducer 78 is provided is, which detects the position of the cross strut 86, so the Measure the size of the outlet gap 14 and the inlet gap 20 can.
  • FIG. 3 A modification of the embodiment according to FIG. 2 is shown in FIG. 3 and designated overall by the number 10b. in this connection corresponding reference numbers are used for corresponding parts.
  • the bracket 44 ' is in the reverse manner to that in the embodiment 2 arranged.
  • the first end 84 'of the stiffening element 18 is namely between the pressure hoses 47, 48 guided, with a first pocket 47 between the bracket 44 'and the first end 84' of the stiffening element 18 and a second pocket 59 between the first end 84 'of the stiffening element 18 and the carrier 50 are formed to which the bracket 44 'is rigidly attached, e.g. with this is screwed.
  • the threaded spindle 82 passes through the carrier 50, the first end 84 'of the stiffening element 18 and a threaded blind hole at the upper end of the upper lip 16.
  • the threaded spindle 82 is in a threaded section at the upper end 84 'of Stiffening element 18 and in the threaded blind hole at the upper end the upper lip 16 out, so that when the Threaded spindle 82 the distance between the upper lip 16 and the Stiffening element 18 can be adjusted. That way a presetting of the size of the outlet gap 14 is reached be the size of the outlet gap 14 across the web width to adapt to a desired profile, for which the different threaded spindles 82 distributed over the web width can be.

Landscapes

  • Paper (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Claims (19)

  1. Section de formage pourvue d'un tamis réalisé de préférence sous forme d'un tamis rond, une fente de sortie (14) ajustable pour une suspension de matière fibreuse sortant d'une chambre (26) étant formée entre le tamis (12) et une lèvre supérieure (16) formée par une paroi de guidage de l'écoulement, la lèvre supérieure (16) étant guidée au moyen d'un fluide sous pression de manière réglable à la fois dans la direction du tamis (12) et dans la direction opposée, caractérisée en ce que la lèvre supérieure (16) est guidée de manière flottante au niveau de sa première extrémité opposée à la chambre (26) à l'aide d'au moins deux tuyaux sous pression (47, 48), un premier (47) des deux tuyaux sous pression (47, 48) exerçant, lors de la sollicitation avec un fluide sous pression, une force exercée sur la lèvre supérieure (16) pour le réglage de celle-ci dans la direction du tamis (12), et un deuxième (48) des deux tuyaux sous pression (47, 48) exerçant, lors de la sollicitation avec un fluide sous pression, une force opposée.
  2. Section de formage selon la revendication 1, caractérisée en ce que la lèvre supérieure (16) est montée à pivotement sur un axe de pivotement (22.1) au niveau de sa deuxième extrémité tournée vers la chambre (26).
  3. Section de formage selon la revendication 1, caractérisée en ce qu'un des deux tuyaux sous pression (47, 48), de préférence le deuxième tuyau sous pression (48), est sollicité par une pression de travail constante, et en ce que l'autre (47) des deux tuyaux sous pression est sollicité par une pression de travail ajustable.
  4. Section de formage selon la revendication 1, caractérisée en ce que la lèvre supérieure (16) est supportée de manière flottante au moyen d'un fluide de pression au niveau de sa deuxième extrémité tournée vers la chambre (26).
  5. Section de formage selon la revendication 4, caractérisée en ce que la lèvre supérieure (16) est guidée de manière flottante entre au moins deux tuyaux sous pression (70, 71, 72, 73) au niveau de sa deuxième extrémité tournée vers la chambre (26).
  6. Section de formage selon la revendication 1 ou 2, caractérisée en ce que la lèvre supérieure (16) est fixée à un élément de renforcement (18) qui est guidé au niveau de sa première extrémité au moyen des deux tuyaux sous pression (47, 48) et est fixé au niveau de sa deuxième extrémité de manière à pouvoir pivoter sur l'axe de pivotement (22.1 ).
  7. Section de formage selon la revendication 6, caractérisée en ce qu'il est prévu un support fixable (50) sur le premier côté tourné vers le tamis (12) duquel est formée une première poche (58) avec une pièce d'écartement (46) vis-à-vis de l'élément de renforcement (18) pour recevoir le premier tuyau sous pression (47), et sur le deuxième côté opposé au tamis (12) duquel est formée une deuxième poche (59) avec un arceau (44) connecté rigidement à l'élément de renforcement (18) pour recevoir le deuxième tuyau sous pression (48).
  8. Section de formage selon la revendication 6, caractérisée en ce que l'élément de renforcement (18) présente une pluralité de nervures de renforcement (19) réparties sur la largeur de la section de formage, auxquelles à chaque fois un palier pivotant (22.2) est associé pour l'appui sur le support (50).
  9. Section de formage selon l'une quelconque des revendications 2, 6
    ou 7, caractérisée en ce qu'un des deux tuyaux sous pression, de préférence le deuxième tuyau sous pression (48), est accouplé à un dispositif (62) pour soulever la lèvre supérieure (16) du tamis (12) lors de la mise en route et de l'arrêt ainsi qu'en cas de panne.
  10. Section de formage selon l'une quelconque des revendications 2, 6 ou 7, caractérisée par un dispositif (24) pour ajuster la distance de l'axe de pivotement (22.1) au tamis (12) pour le réglage de la fente d'entrée (20) formée entre la lèvre supérieure (16) et la lèvre inférieure (36).
  11. Section de formage selon la revendication 10, caractérisée en ce que la chambre (26), hors de laquelle la suspension de matière fibreuse sort dans la fente d'entrée (20) entre la lèvre supérieure (16) et la lèvre inférieure (36) est limitée à l'extrémité arrière opposée au tamis (12) par une paroi flexible (38).
  12. Section de formage selon la revendication 10, caractérisée en ce que l'un des tuyaux sous pression (70, 71), lors de la sollicitation avec le fluide sous pression, exerce une force pour le réglage dans la direction du tamis (12), et un autre des tuyaux sous pression (72, 73), lors de la sollicitation avec le fluide sous pression, exerce une force opposée.
  13. Section de formage selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une butée réglable (65) pour la lèvre supérieure (16) est prévue pour limiter un mouvement d'avance de la lèvre supérieure (16) dans la direction du tamis (12).
  14. Section de formage selon l'une quelconque des revendications 4, 5 ou 12, caractérisée en ce que la lèvre supérieure (16) est supportée à sa deuxième extrémité par le biais d'une pluralité de paliers pivotants (22.2) répartis sur la largeur de la machine sur une entretoise (18) qui est supportée à l'aide de deux tuyaux sous pression respectifs s'étendant par paire l'un à côté de l'autre (70, 71, 72, 73) sur le support (50), qui s'étendent dans des poches (66, 67) entre l'entretoise (86) et le support (50) du côté tourné vers le tamis (12) et dans des poches (68, 69) entre l'entretoise (86) et des éléments de support (74) connectés rigidement au support (50) du côté opposé au tamis (12).
  15. Section de formage selon l'une quelconque des revendications 1 à 6 ou 9 à 14, caractérisée en ce qu'entre la première extrémité (84') de l'élément de renforcement (18), opposée à la chambre (26), et un arceau (44) connecté rigidement à un support (50), est formée une poche (58) tournée vers le tamis (12) pour recevoir un tuyau sous pression (47), et en ce qu'entre le support (50) et l'élément de renforcement (18) est formée une poche (59) opposée au tamis (12) pour recevoir un tuyau sous pression (48).
  16. Section de formage selon la revendication 15, caractérisée en ce qu'au moins un capteur de mesure (78, 80) est accouplé à une broche filetée (82) ou à l'un des paliers pivotants (22.2).
  17. Section de formage selon la revendication 15, caractérisée en ce qu'une broche filetée (82) est prévue, laquelle traverse le support (50) et l'élément de renforcement et vient en prise dans une section filetée de l'élément de renforcement (18) et de la lèvre supérieure (16).
  18. Section de formage selon l'une quelconque des revendications précédentes, caractérisée en ce que, pour ajouter du liquide dans la chambre (26), on prévoit un tube distributeur transversal (34') qui est connecté rigidement au support (50) par le biais de renforcements (56', 57') et qui peut être équilibré en température de telle sorte que le support (50) reste exempt de fléchissements.
  19. Section de formage selon l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins un capteur de mesure (78, 80) est prévu pour déterminer la position de la lèvre supérieure (16) à sa première extrémité (84, 84') ou à sa deuxième extrémité (85, 85').
EP98108651A 1997-07-01 1998-05-13 Section de formage Expired - Lifetime EP0889162B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE1997127929 DE19727929A1 (de) 1997-07-01 1997-07-01 Former
DE19727929 1997-07-01
DE19748460 1997-11-03
DE19748460A DE19748460A1 (de) 1997-07-01 1997-11-03 Former

Publications (3)

Publication Number Publication Date
EP0889162A2 EP0889162A2 (fr) 1999-01-07
EP0889162A3 EP0889162A3 (fr) 1999-06-16
EP0889162B1 true EP0889162B1 (fr) 2003-12-10

Family

ID=26037904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98108651A Expired - Lifetime EP0889162B1 (fr) 1997-07-01 1998-05-13 Section de formage

Country Status (4)

Country Link
US (1) US6139690A (fr)
EP (1) EP0889162B1 (fr)
AT (1) ATE256217T1 (fr)
DE (2) DE19748460A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10303466A1 (de) * 2003-01-29 2004-09-30 Voith Paper Patent Gmbh Former
DE10323300A1 (de) * 2003-05-21 2004-12-16 Voith Paper Patent Gmbh Former
DE102008054634A1 (de) 2008-12-15 2010-06-17 Voith Patent Gmbh Formiereinheit, insbesondere Hochkonsistenz-Blattbildungseinheit, Verwendung und Verfahren zur Steuerung der Betriebsweise einer derartigen Formiereinheit

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645843A (en) * 1970-04-30 1972-02-29 Beloit Corp Fluid control of headbox slice opening
US3853695A (en) * 1972-10-12 1974-12-10 S Back Entraining a liquid into a fiber slurry to accelerate it prior to discharge from a flow path onto a forming wire
CH564640A5 (fr) * 1973-04-17 1975-07-31 Escher Wyss Gmbh
CH565280A5 (fr) * 1973-04-24 1975-08-15 Escher Wyss Gmbh
AT356505B (de) * 1977-07-27 1980-05-12 Escher Wyss Gmbh Stoffauflauf fuer papiermaschinen
SE404817B (sv) * 1978-02-21 1978-10-30 Uddeholms Ab Inloppslada for pappersmaskiner
AT369452B (de) * 1980-07-03 1983-01-10 Voith Ag J M Einrichtung zur verstellung bzw. einstellung des stoffauflaufes fuer siebmaschinen, insb. rundsiebmaschinen zur erzeugung eines vlieses aus einer stoffsuspension
US4358342A (en) * 1981-01-19 1982-11-09 Kimberly-Clark Corporation Papermaking headbox having rigid lips and actvating means
EP0106593A3 (fr) * 1982-10-11 1984-11-28 The Wiggins Teape Group Limited Dispositif de régulation pour buse
DE3836062A1 (de) * 1988-10-22 1990-04-26 Voith Gmbh J M Stoffauflauf fuer eine maschine zur herstellung von faserstoffbahnen, insbesondere von papierbahnen
DE29508352U1 (de) * 1994-05-25 1995-07-27 Dörries GmbH, 52349 Düren Stoffauflauf für Papiermaschinen

Also Published As

Publication number Publication date
DE19748460A1 (de) 1999-05-06
ATE256217T1 (de) 2003-12-15
EP0889162A2 (fr) 1999-01-07
EP0889162A3 (fr) 1999-06-16
DE59810379D1 (de) 2004-01-22
US6139690A (en) 2000-10-31

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