EP0666370B1 - Verfahren zum wenigstens einseitigen Beschichten einer Faserstoffbahn mit einem Auftragsmedium und Vorrichtung zur Durchführung des Verfahrens - Google Patents

Verfahren zum wenigstens einseitigen Beschichten einer Faserstoffbahn mit einem Auftragsmedium und Vorrichtung zur Durchführung des Verfahrens Download PDF

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Publication number
EP0666370B1
EP0666370B1 EP95100887A EP95100887A EP0666370B1 EP 0666370 B1 EP0666370 B1 EP 0666370B1 EP 95100887 A EP95100887 A EP 95100887A EP 95100887 A EP95100887 A EP 95100887A EP 0666370 B1 EP0666370 B1 EP 0666370B1
Authority
EP
European Patent Office
Prior art keywords
applicator
application
free jet
fibrous web
coating
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
EP95100887A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0666370A1 (de
Inventor
Martin Dr. Kustermann
Bernhard Kohl
Michael Dr. Trefz
Friedhelm Ruhl
Ingo Gottwald
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
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0666370A1 publication Critical patent/EP0666370A1/de
Application granted granted Critical
Publication of EP0666370B1 publication Critical patent/EP0666370B1/de
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
    • 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
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/14—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a travelling band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work

Definitions

  • the invention relates to a method for at least one-sided coating of a fibrous web with a Order medium, specifically with the characteristics from the The preamble of claim 1, further a device for Execution of the procedure.
  • the Predosing device comprises a nozzle applicator, in which Glue or coating color via a special distribution system is passed into the pressure chamber of the application nozzle and one Squeegee device.
  • the application medium passes through a Slot nozzle from the pressure chamber into the order area.
  • the amount of glue or coating slip is applied using a doctor blade or a pressable blade controlled.
  • DE-A-2 310 526 describes a method for coating both sides of a Paper web in a device comprising an application roller and a Counter element, which together form a gap through which the paper web is passed through, and in which the application medium on the roller pre-dosed an order media free jet and in the gap on the web is transmitted.
  • further rollers are connected upstream. Further is a sump of the application medium is provided.
  • Such a swamp is absolute harmful, because it moistens the paper web much too much and therefore its Strength reduced. Evenness is on both sides of the Paper web no longer exist. At today's high Such a swamp would affect the web and the web Spray off the rollers, causing further irregularities in the application on the would lead.
  • DE-A-3 526 257 describes a two-roll applicator.
  • an order medium is pre-dosed by a direct one Application on the rollers.
  • nozzles with elastic lips provided that are pressed onto the jacket of the applicator roller.
  • a such an embodiment does not produce a free jet.
  • the pressure of the lips against the surface of each roller guarantees none even, controlled order.
  • the invention is therefore based on the object of a method and also a method Device for performing the method of the type mentioned to develop in such a way that the disadvantages mentioned are avoided.
  • the amount of film to be transferred to the fibrous web is over time and over the machine working width, i.e. transverse to the direction of the fibrous web to keep constant.
  • the amount of film to be applied should also be certain Bandwidths can be controlled.
  • the dosing element should be robust with regard to its handling and one have low susceptibility to damage, for use at high Order speeds are suitable and easy to use as well have a very small number of wearing parts.
  • the pre-metering takes place in one Two-element application device on the outer surface of an application roller at least indirectly, i.e. both directly and indirectly through the order of order medium by means of at least one free jet.
  • a Free blasting offers the advantage of direct control of the order quantity and thus the thickness of the application film on the outer surface by change certain parameters such as the exit cross section, the Exit speed and the application angle of the free jet in Connection with the speed of the application roller.
  • the free jet can be directed directly onto the outer surface of the application roller be or on the outer surface of a transfer roller, which in turn the Application medium at least indirectly, i.e. directly or through another Transfer roller on the outer surface of the application roller transmits.
  • the latter variant also offers the advantage a further metering effect, in particular the stretching of the application film by the appropriate adjustment of the diameter ratio of Application roller and transfer roller achieved speed difference of Shell surfaces of application and transfer roller.
  • At least one application element preferably an application roller
  • an application unit comprising a device for generating a free jet which at least indirectly applies the application medium to the surface of the application element.
  • the device for generating a free jet can be directly assigned to the order element (free jet is directed directly onto the surface of the order element) or, if at least one transmission element is connected in series, can be directly assigned to it.
  • the second option offers the advantage of being more suitable Design of the diameter ratio between order and Transfer roller an additional metering effect, in usually in the form of a film stretching through the Achieve transfer roller. It is special advantageous if a particularly thin application film on the Fibrous web is desired.
  • the free jet nozzle device can be as in the US-A-3,418,970, US-A-3,521,602 and US-A-4,231,318 be designed. Acting with the free jet nozzle device it is usually a pure order setup with own supporting body, for example a distributor and a slot nozzle extending across the machine width includes. The application takes place without contact of the nozzle with the Lateral surface of the application element.
  • the Free jet nozzle device is in the radial direction displaceable relative to the outer surface of the application roller and rotatable about a certain axis so that the Application angle with respect to the outer surface of the application roller is variably adjustable.
  • the Nozzle device according to US-A-3,418,970 such arranged opposite the lateral surface of the application roller, that in the order direction, i.e. in the direction of the Roll a converging gap between the outer surface the application or transfer roller and the Free jet nozzle device results.
  • the nozzle channel of the nozzle device i.e. the connecting line between the distributor and the nozzle outlet be curved.
  • the curvature runs in the essentially converging to the order or Transfer roller. With this procedure lies then low-air layer on the roller and the air-rich layer Outside.
  • a change in the outlet cross-section and the speed the application or transfer rollers are constructive easy to implement while changing the Exit velocity as a function of Outlet cross section and the design of the nozzle or Container (specifically the changes in cross section between Distributor or container and outlet cross section) look at is.
  • the Two-element application device an application roller include an extended with a circulating belt Press nip for passing the fibrous web forms.
  • the free jet is then preferably applied to the Lateral surface of the application roller, but also the order the tape may be conceivable.
  • Such Device is also suitable for one-sided and double-sided coating of fibrous webs.
  • the devices for generating the Free jet in the part of the lateral surface of the order or Transfer roller arranged in the direction of rotation Rolls in the area before the nip inlet are also conceivable.
  • additional leveling devices for example in form of air brushes applied to even out the Film used on the outer surface.
  • the order according to the invention by means of a free jet on the The surface of an application element offers the advantage of a direct controllability of the pre-dosing of the application medium on the surface of an order element and thus the Predosing for the one to be transferred in the press nip Order quantity.
  • the system according to the invention offers further the advantage that the amount of film to be applied kept constant over time and across the working width can be.
  • the order or. Dosing system stands out due to a small number of wearing parts and thus longer downtimes between the necessary changes the dosing elements.
  • the adjustability of the size of the Outlet openings and changes in position with respect to the Order elements are easy to construct.
  • the inventive method is suitable for Coating slip as well as starch.
  • FIG. 1 shows a two-roller application device.
  • the two Application rollers 1 and 2 are opposite to each other driven. Essentially below that from below above running part of the roll circumference of each roll 1, 2 an application unit 5, 6 for a flowable medium arranged.
  • the fibrous web 4 is from bottom to top passed through the nip 3. It is in the Areas 7, 8, the nip 3 with the Fibrous web 4 forms a film of a flowable Medium over the roller surfaces on both sides of the Fibrous web 4 applied.
  • the application medium for example coating slip in the desired thickness according to the distances of the Rolling circles of both rollers 1 and 2 onto the fibrous web 4 applied.
  • the application devices 5 is as Free jet nozzle device executed.
  • the nozzle channel of the Free jet nozzle device 5 is preferably curved executed.
  • the free jet 13 is corresponding represented schematically.
  • the application device 6 is as an STDA with a squeegee, for example as in the on 17.03.1994 published DE-A-42 30 276.
  • the coating slip is applied to the outer surface 11 and 12 respectively the rollers 1 and 2 applied.
  • FIG. 2 illustrates an embodiment analogous to FIG. 1 with additional leveling devices.
  • the fibrous web 4 is here from above passed down through the press nip 3.
  • the fibrous web 4 is from top to bottom through the Roll nip 3 out.
  • a film a flowable medium over the roller surface 11 or 12 applied to the fibrous web 4.
  • FIG. 3 illustrates a two-roller application device with additional transfer rollers that run counter to the Rotate application rollers and form a gap with them.
  • the basic structure corresponds to that in Figure 2, which is why for same elements same reference numbers have been used.
  • Each applicator roller 1 or 2 is a transfer roller 16 or 17 with an application device 5a or 5b in the form assigned to at least one free jet nozzle.
  • Application rollers 1 and 2 and transfer rollers 16 and 17 respectively form a gap 30 or 31 with each other.
  • the transfer rollers 16 and 17 preferably have a smaller diameter than the application rollers 1 and 2 respectively, whereby each between application roller 1 or 2 and transfer roller 16 or 17 a speed difference between them Shell surfaces 11 and 18 or 12 and 19 results. This Speed difference contributes to a stretching of the Coating film and thus for an additional metering effect at.
  • Figure 4 illustrates a possibility of pre-metering Coating paint directly on an applicator roller Two-roller application device by means of a closed Headbox 19.
  • the basic structure of the Two-roller application device corresponds to that in the figures 1 to 3, which is why the same reference numerals for the same elements were used.
  • the coating slip is fed directly on the lateral surface 12 of the application roller 2.
  • the headbox includes a pressurizable one Container 20 with one, essentially over the outlet line 21 that extends across the entire width of the machine The flow cross section of the outlet line 21 is in the Cross section changeable - however over the width of the Order constant.
  • the application on the application roller 1 takes place by means of a open headbox 25, for example a central open container 26 with overflow weir and a Has drain element 27, via which the coating slip is passed onto the lateral surface 11 of the application roller 1.
  • a open headbox 25 for example a central open container 26 with overflow weir and a Has drain element 27, via which the coating slip is passed onto the lateral surface 11 of the application roller 1.
  • the drain element 27 assigned aperture that acts like a choke.
  • FIG 5 is a two-element applicator shown that an applicator roller 1 with a circumferential band 22 forms an extended press nip 23, includes.
  • the application roller 1 is one Free jet nozzle device 5a assigned.
  • the circulating Band 22 is made by passing the band through a Glue suspension filled container 28, the quantity of glue carried along by the tape 22 by an in Blade 24 downstream direction is equalized.
  • the embodiment shown in Figure 5 is preferably for coating on both sides with different application media can be used, while the in 1 to 4 preferably shown for the double-sided coating with the same Application medium are suitable. However, here is one too different or only one-sided coating conceivable. In those shown in Figures 1 and 4 There is also the option of both Order elements the same order units assign.

Landscapes

  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
EP95100887A 1994-01-31 1995-01-24 Verfahren zum wenigstens einseitigen Beschichten einer Faserstoffbahn mit einem Auftragsmedium und Vorrichtung zur Durchführung des Verfahrens Expired - Lifetime EP0666370B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4402627A DE4402627A1 (de) 1994-01-31 1994-01-31 Verfahren zum wenigstens einseitigen Beschichten einer Faserstoffbahn mit einem Auftragsmedium und Vorrichtung zur Durchführung des Verfahrens
DE4402627 1994-01-31

Publications (2)

Publication Number Publication Date
EP0666370A1 EP0666370A1 (de) 1995-08-09
EP0666370B1 true EP0666370B1 (de) 2001-04-04

Family

ID=6508957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100887A Expired - Lifetime EP0666370B1 (de) 1994-01-31 1995-01-24 Verfahren zum wenigstens einseitigen Beschichten einer Faserstoffbahn mit einem Auftragsmedium und Vorrichtung zur Durchführung des Verfahrens

Country Status (6)

Country Link
EP (1) EP0666370B1 (fi)
JP (1) JP3435242B2 (fi)
AT (1) ATE200326T1 (fi)
CA (1) CA2141473C (fi)
DE (2) DE4402627A1 (fi)
FI (1) FI108848B (fi)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29520678U1 (de) * 1995-12-29 1996-05-30 Voith Sulzer Papiermasch Gmbh Auftragwerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
DE29702629U1 (de) * 1997-02-15 1997-04-10 Voith Sulzer Papiermasch Gmbh Vorrichtung zum indirekten ein- oder beidseitigen Auftragen eines flüssigen Mediums auf eine laufende Warenbahn
DE19816337A1 (de) * 1998-04-11 1999-10-14 Voith Sulzer Papiertech Patent Vorrichtung zum direkten oder indirekten, ein- oder beidseitigen Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Oberfläche
FI108993B (fi) 1999-06-30 2002-05-15 Metso Paper Inc Menetelmä ja sovitelma käsittelyaineen levittämiseksi liikkuvalle pinnalle
JP2002263540A (ja) * 2001-03-14 2002-09-17 Ishikawajima Harima Heavy Ind Co Ltd ロールコータ
DE10146463A1 (de) * 2001-09-20 2003-04-17 F Ee Gmbh Automation Verfahren und Vorrichtung zum Auftragen von Leim auf Wellpappe
DE102015113161A1 (de) * 2015-08-10 2017-02-16 KROENERT GmbH & Co KG Verfahren und Vorrichtung zum Auftragen eines Mediums auf ein Substrat
CN107737688A (zh) * 2017-09-06 2018-02-27 江门市泽天达科技有限公司 一种钢板涂布机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2310526A1 (de) * 1972-03-13 1973-09-27 Inventing Ab Verfahren zum gleichzeitigen und beidseitigen beschichten einer materialbahn mit unterschiedlichen beschichtungsmitteln

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Publication number Priority date Publication date Assignee Title
US2320883A (en) * 1939-11-16 1943-06-01 Parkinson Leonard Paper-coating apparatus
US3257226A (en) * 1962-11-08 1966-06-21 Exxon Research Engineering Co Wax coating method and apparatus
GB1042627A (en) * 1964-07-17 1966-09-14 British Cellophane Ltd Improvements in and relating to coating travelling webs
US3418970A (en) * 1964-11-02 1968-12-31 Black Clawson Co Paper coating apparatus
US3521602A (en) * 1967-12-18 1970-07-28 Black Clawson Co Fountain coater
BE802413A (fr) * 1973-07-16 1973-11-16 Inventing Ab Procede pour appliquer des revetements de compositions differentes sur une feuille de papier ou autre.
US4231318A (en) * 1978-07-03 1980-11-04 The Black Clawson Company Dual blade coater
DE3417487A1 (de) * 1984-05-11 1985-11-21 J.M. Voith Gmbh, 7920 Heidenheim Vorrichtung zum auftragen einer fluessigkeit auf eine laufende bahn
DE3526257A1 (de) * 1985-07-23 1987-01-29 Sucker & Franz Mueller Gmbh Vorrichtung zum applizieren einer definierten produktmenge auf einen walzenmantel
DE3716520A1 (de) * 1987-05-16 1988-12-01 Kleinewefers Gmbh Vorrichtung und verfahren zum auftragen von klebemittel
US5224995A (en) * 1989-10-24 1993-07-06 Pioneer Electronic Corporation Apparatus for applying a coating to a surface of a substrate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2310526A1 (de) * 1972-03-13 1973-09-27 Inventing Ab Verfahren zum gleichzeitigen und beidseitigen beschichten einer materialbahn mit unterschiedlichen beschichtungsmitteln

Also Published As

Publication number Publication date
JP3435242B2 (ja) 2003-08-11
FI108848B (fi) 2002-04-15
DE4402627A1 (de) 1994-07-14
ATE200326T1 (de) 2001-04-15
DE59509140D1 (de) 2001-05-10
FI950408A0 (fi) 1995-01-30
CA2141473C (en) 2006-10-31
FI950408A (fi) 1995-08-01
CA2141473A1 (en) 1995-08-01
EP0666370A1 (de) 1995-08-09
JPH07313914A (ja) 1995-12-05

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