EP1624106B1 - Dispositif d'enduction - Google Patents

Dispositif d'enduction Download PDF

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Publication number
EP1624106B1
EP1624106B1 EP05105847A EP05105847A EP1624106B1 EP 1624106 B1 EP1624106 B1 EP 1624106B1 EP 05105847 A EP05105847 A EP 05105847A EP 05105847 A EP05105847 A EP 05105847A EP 1624106 B1 EP1624106 B1 EP 1624106B1
Authority
EP
European Patent Office
Prior art keywords
applicator
doctor
loadbearing
frame
loadbearing frame
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.)
Not-in-force
Application number
EP05105847A
Other languages
German (de)
English (en)
Other versions
EP1624106A1 (fr
Inventor
Joachim Grabscheid
Martin Kustermann
Stefan Reich
Eckard Wozny
Manfred Ueberschär
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1624106A1 publication Critical patent/EP1624106A1/fr
Application granted granted Critical
Publication of EP1624106B1 publication Critical patent/EP1624106B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades

Definitions

  • the invention relates to a device for direct or indirect application of a liquid or pasty coating medium on a running paper, cardboard or other Fasterstoffbahn.
  • the fibrous web can also be a textile web.
  • the web can be coated on one side or on both sides.
  • the coating medium can be applied in one or more layers. It may be, for example, a paint, a starch, an impregnating material or others, each in the form of a suspension or dispersion.
  • the essential components of such a device are a counter-roller, a commissioning unit associated therewith for applying the coating medium and a squeegee device.
  • the commissioned work applies coating medium as a flat jet.
  • the beam can be as wide as the web itself. It can also have a slightly smaller width or form the application layer in the form of a large number of individual beams.
  • the squeegee device is connected downstream of the commissioned work. It serves for the uniform and / or the dosage of the applied layer of coating medium.
  • the fibrous web wraps around the counter roll on a portion of its circumference.
  • the medium delivered by the commissioned work passes directly, ie directly onto the web to be crossed.
  • the jet of the coating medium is applied to the lateral surface of the counter-roller, in turn uniformed by the doctor device, and then delivered to the fibrous web, which in turn is brought to the outer surface of the counter-roller.
  • devices with two counter-rollers are known, which form a gap with each other. The fibrous web is passed through this gap, so that the transfer of the layer of coating medium takes place in the region of the nip.
  • the counter-roller is stored in a chair.
  • the chair has two supporting structures, which according to the counter roll between them. Each support structure is thus located in the region of one end face of the counter-roller.
  • the commissioned work and the squeegee device are carried by the chair. Each end of one of these two elements - commissioned work and doctor device - is supported in the associated supporting structure.
  • the two supporting structures are rigidly connected to one another by one or more parts of the frame in order to give the frame the necessary rigidity.
  • Both the commissioned work and the doctor device must be able to be moved away from the counter-roller into a stand-by position, for example for the purpose of cleaning, maintenance or repair. Of course, they also have to be adjustable into an operating position. It depends on various operating parameters. These include the applicator the distance between the applicator nozzle and the lateral surface of the backing roll (indirect application) or the fibrous web (direct application), further the angle formed by the free jet of the coating medium with the lateral surface of the backing roll or the fibrous web at Strahlauferietician , In the doctor device, it depends on the contact pressure, with which the respective doctor element is pressed against the lateral surface of the counter roll or to the web, and also to the angle formed by the doctor element with these two.
  • the two elements-applicator unit and / or squeegee device- may be rotatable or pivotable about an axis parallel to the axis of the counter-roller or otherwise movable relative to the counter-roller.
  • a squeegee device is any kind of device into consideration, for example, a device with a doctor blade, an air knife, a doctor bar or a rotary squeegee.
  • the stroke must have a certain thickness.
  • the thickness profile across the web width must be highly uniform.
  • the quality of the stroke surface can play a role.
  • These functional elements have an elongated shape. Depending on the web width, they can be between 1 and 11 m long. Because of the above suspension in the frame - on the two lateral supporting structures - a slack due to the weight of the functional element concerned can not be avoided. Without further measures, this would mean that the parameters mentioned assume different values across the web width. The distance between the nozzle of the commissioned work and impact point of the free jet would thus be greater in the middle of the web, as at the web edges. The contact pressure of the doctor element of the doctor device would be smaller in the middle of the web than at the web edges.
  • Measures have been taken to reduce these harmful effects. These consist in that one dimensioned the associated support beams of commissioned work and doctor device according to increase their moment of resistance. In addition, one tries to compensate for the disadvantages by a corresponding shaping of the respective elements, for example, characterized in that the nozzle of the commissioned work and the doctor element of the doctor device - seen in plan view - have a belly.
  • the invention has for its object to make a device according to the preamble of claim 1 such that the quality requirements of the coated fibrous web are fully met.
  • the device should be of simple, inexpensive and robust construction.
  • the masses of commissioned and squeegee device should be as small as possible, accessibility for the purpose of monitoring the functions, cleaning, maintenance and repair should be improved.
  • the core idea of the invention is that the applicator and / or the doctor device with a sliding or rolling guide along the support frame are displaced
  • the support frame is a component of considerable stability. It represents a reliable, positive guidance of the commissioned work and / or the squeegee device, so that the distance to the fibrous web to be coated over the entire displacement is reliably maintained.
  • FIG. 1 can be seen a counter-roller 1. This is rotatably mounted about a rotation axis 1.1. The bearings are not shown here in lateral support structures - one at each end face of the backing roll. 1
  • the counter roll 1 is looped by a fibrous web 2 on a part of its peripheral surface.
  • a Fung part 3 is designed as a hollow construction. It connects the two mentioned lateral support structures together and establishes a rigid connection to these two.
  • the stiffening part 3 carries two functional units, namely a commissioned work 4 and a doctor device 5.
  • the commissioned work has a applicator body 4.1.
  • a free jet 4.2 or spray jets directed against the fibrous web 2 in operation.
  • the commissioned work 4 is mounted by means of a sliding or rolling guide 4.3 on a vertical wall 3.1, the framing part 3 and according to the vertically displaceable - see double arrow 4.4.
  • the application body 4.1 is further pivotable about a rotation axis 4.5. In this way, the distance between the application body 4.1 and the fibrous web 2 can be changed, likewise the angle of the free jet 4.2 or the spray jets.
  • the doctor device 5 has a doctor body 5.1, which carries a doctor blade 5.2.
  • the doctor device 5 is in turn displaceable by means of a sliding guide 5.3 along an inclined wall 3.2 of the Fung part 3. See double arrow 5.4.
  • Of the Doctor body 5.1 is pivotable about a rotation axis 5.5. In this way, the squeegee device 5 - equal to the commissioned work 4 - proceed in the direction of the backing roll 1, ie depart from this or hire against them. Thus, the contact pressure and the angle of the doctor blade 2 can be changed.
  • the embodiment according to FIG. 2 has substantially all the features of that according to FIG. 1 on.
  • the Fung part 3 has no closed profile, but is open against the counter roll 1 out. It is also walkable. Furthermore, it has a channel 3.3 for guiding supply lines and a channel 3.4 for catching rubbed-off coating color.
  • the functional units 4 and 5 are in turn displaceable or pivotable, as in the embodiment according to FIG. 1 , Likewise, the counter roll 1 can be moved to a standby position.
  • the commissioned work and doctor device can be designed solely on the basis of the functions to be performed by them.
  • the flexural rigidity does not matter because the functional units are supported on the stiffening part, either throughout their entire lengths, or at several points of their lengths.
  • the necessary translational movements in the radial direction towards the counter roll - contact pressure, service position - and the pivoting movements with regard to the blade angle, the beam angle and the service position remain unaffected and can be realized properly.
  • the stool part could be made wholly or partially movable, but at least the walls or parts of the walls which carry the functional units 4 and 5.
  • the fibrous web 2 wraps around the counter roll 1.
  • the devices shown can also be used for the indirect application of a coating medium.
  • the free jet 4.2 from the application body 4.1 is not applied to the fibrous web 2, but onto the lateral surface of the counter roll 1.
  • the layer which deposits thereon is subjected to the doctoring process and transferred at a different point on the circumference of the counter roll 1 onto a fibrous web 2.
  • the device shown comprises a counter-roller 1 with an axis of rotation 1.1.
  • the mating roll is also wrapped around a part of its circumference of a fibrous web 2.
  • a stiffening part 3 has a vertical surface 3.1 and a horizontal surface 3.2.
  • the commissioned work 4 comprises a coating body 4.1, with a nozzle which occupies a certain distance to the fibrous web 2.
  • a continuous flat jet 4.2 or a plurality of spray jets of the application medium emerge and reach the fibrous web surface.
  • the application body 4.1 is supported by a support beam 4.6. This is cylindrical in the present case.
  • the support beam 4.6 is in turn rotatably mounted in bearing blocks 4.7.
  • the bearing blocks 4.7 are movable in a sliding guide 4.3 along the vertical surface 3.1 by means of a pneumatic unit 4.8.
  • the distance between the nozzle of the nozzle body 4.1 and the fibrous web 2 can be adjusted.
  • the adjustment drive 4.9 can be used to change the direction of the application medium 4.2 emerging from the nozzle or a large number of individual nozzles by turning the support beam 4.6.
  • the conditions in the doctor device 5 are analogous to those of the commissioned work 4.
  • a doctor body 5.1 with doctor blade 5.2 is supported by a support beam 5.6.
  • the support beam is in turn stored in bearing blocks 5.7.
  • the bearing blocks are movable in a sliding guide 5.3.
  • a pneumatic unit 5.8 allows a horizontal approach and retraction of the doctor device 5 relative to the counter cylinder 1.
  • An adjusting 5.9 allows a rotation of the support roller 5.6 and thus the angle between the blade 5.2 and fibrous web. 2

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Massaging Devices (AREA)

Claims (8)

  1. Dispositif pour l'enduction d'un milieu d'enduction liquide ou pâteux sur une bande de papier, carton ou une autre bande fibreuse en mouvement (2), présentant :
    un contre-cylindre (1) ;
    un dispositif d'enduction (4) pour l'enduction de milieu d'enduction ;
    un dispositif de raclage (5) qui est monté derrière le dispositif d'enduction (4) ainsi que deux constructions de support latérales pour supporter le contre-cylindre (1) ;
    le dispositif d'enduction (4) et/ou le dispositif de raclage (5) étant portés sur toute leur longueur ou sur une partie de leur longueur par un cadre de support fixe (3) ;
    caractérisé en ce que le dispositif d'enduction (4) et/ou le dispositif de raclage (5) peuvent être déplacés le long du cadre de support (3) au moyen d'un guidage à glissement ou à rouleaux (4.3).
  2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif d'enduction (4) et/ou le dispositif de raclage (5) peuvent être déplacés le long d'une paroi (3.1, 3.2) du cadre de support (3) au moyen du guidage à glissement ou à rouleaux (4.3).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le cadre de support (3) est réalisé sous forme de profilé creux.
  4. Dispositif selon la revendication 3, caractérisé en ce que le cadre de support (3) est ouvert vers le contre-cylindre (1).
  5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le cadre de support (3) est praticable.
  6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le dispositif d'enduction (4) et le dispositif de raclage (5) sont montés à chaque fois sur des parois (3.1), respectivement (3.2) du cadre de support (3), qui s'étendent au moins approximativement dans la direction d'un rayon du contre-cylindre (1).
  7. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le dispositif d'enduction (4) et/ou le dispositif de raclage (5) sont montés sur leur longueur en plusieurs points répartis uniformément sur le cadre de support (3).
  8. Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le dispositif d'enduction (4) et/ou le dispositif de raclage (5) ne sont montés que dans la région du côté opérateur et du côté entraînement du dispositif.
EP05105847A 2004-08-03 2005-06-30 Dispositif d'enduction Not-in-force EP1624106B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004037532A DE102004037532A1 (de) 2004-08-03 2004-08-03 Auftragsvorrichtung

Publications (2)

Publication Number Publication Date
EP1624106A1 EP1624106A1 (fr) 2006-02-08
EP1624106B1 true EP1624106B1 (fr) 2008-09-03

Family

ID=35124309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05105847A Not-in-force EP1624106B1 (fr) 2004-08-03 2005-06-30 Dispositif d'enduction

Country Status (3)

Country Link
EP (1) EP1624106B1 (fr)
AT (1) ATE407259T1 (fr)
DE (2) DE102004037532A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017109549B4 (de) 2017-05-04 2021-07-29 Voith Patent Gmbh Streicheinrichtung zur Behandlung einer Faserstoffbahn
CN109700067B (zh) * 2018-12-11 2024-05-10 中国船舶工业总公司七一五研究所宜昌分部 一种稠浆薄片制作成型机及操作方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2228685C3 (de) * 1972-06-13 1978-04-06 Escher Wyss Gmbh, 7980 Ravensburg Beschichtungsvorrichtung
DE3908386A1 (de) * 1989-03-15 1990-09-27 Jagenberg Ag Verfahren und vorrichtung zum beschichten von materialbahnen, insbesondere von papier- oder kartonbahnen
DE4014647C2 (de) * 1990-05-08 1995-03-30 Voith Gmbh J M Einrichtung zum Auftragen einer Beschichtung auf eine laufende Warenbahn
FI91367C (fi) * 1990-12-13 1994-06-27 Valmet Paper Machinery Inc Taipumakompensoitu teräpalkki
DE9207551U1 (fr) * 1992-06-04 1992-08-27 J.M. Voith Gmbh, 7920 Heidenheim, De
DE4341341C1 (de) * 1993-12-06 1995-03-09 Jagenberg Ag Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
ATE210223T1 (de) * 1995-07-29 2001-12-15 Jagenberg Papiertech Gmbh Auftragsystem für eine vorrichtung zum beschichten einer papier- oder kartonbahn
FI105167B (fi) * 1995-12-28 2000-06-30 Valmet Corp Applikointilaite päällystysaineen applikoimiseksi liikkuvalle alustalle
DE19649559A1 (de) * 1996-11-29 1998-06-04 Voith Sulzer Papiermasch Gmbh Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Streichmediums auf eine laufende Materialbahn

Also Published As

Publication number Publication date
DE502005005241D1 (de) 2008-10-16
EP1624106A1 (fr) 2006-02-08
DE102004037532A1 (de) 2006-03-16
ATE407259T1 (de) 2008-09-15

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