WO1995012031A1 - Procede de reduction au minimum des sauts d'enduit sur une bande de papier - Google Patents

Procede de reduction au minimum des sauts d'enduit sur une bande de papier Download PDF

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Publication number
WO1995012031A1
WO1995012031A1 PCT/EP1993/002452 EP9302452W WO9512031A1 WO 1995012031 A1 WO1995012031 A1 WO 1995012031A1 EP 9302452 W EP9302452 W EP 9302452W WO 9512031 A1 WO9512031 A1 WO 9512031A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating liquid
web
curved surface
sheet
elongate
Prior art date
Application number
PCT/EP1993/002452
Other languages
English (en)
Inventor
Wayne A. Damrau
Original Assignee
J.M. Voith 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 to CA002101358A priority Critical patent/CA2101358C/fr
Priority to DE69323214T priority patent/DE69323214T2/de
Priority to BR9307830A priority patent/BR9307830A/pt
Priority to EP93924029A priority patent/EP0675984B1/fr
Priority to JP7512371A priority patent/JP2975689B2/ja
Priority to ES93924029T priority patent/ES2131124T3/es
Application filed by J.M. Voith Gmbh filed Critical J.M. Voith Gmbh
Priority to AT93924029T priority patent/ATE176021T1/de
Priority to PCT/EP1993/002452 priority patent/WO1995012031A1/fr
Priority to US08/241,475 priority patent/US5436030A/en
Priority to US08/432,431 priority patent/US5603767A/en
Publication of WO1995012031A1 publication Critical patent/WO1995012031A1/fr
Priority to FI953126A priority patent/FI105940B/fi

Links

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
    • D21H23/34—Knife or blade type coaters
    • 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

Definitions

  • the present invention relates to a method of and apparatus for applying liquid coating material onto a moving web of paper, and in particular to a coating method and apparatus of the fountain applicator type.
  • Coating a web of paper is generally effected by the application of a liquid coating material onto a moving web.
  • the coating material may be comprised of a solid constituent suspended in a liquid carrier.
  • the quality of the coating applied onto the paper web depends upon a number of factors, and important one of which being how the material is applied.
  • the application of the coating material should preferably result in a coating that is continuous and uniform across the web.
  • fountain applicators overcome many of the limitations of roll applicators, in their use, skip coating often occurs.
  • Skip coating is caused by air in the coating liquid being contacted against the paper web and preventing the coating liquid from uniformly contacting and being uniformly applied onto the web surface.
  • fountain applicators customarily include coating/air separation equipment to remove air from coating liquid prior to delivery of the coating liquid to the applicator, but the equipment is not 100 % effective and some air remains entrained in the coating liquid jetted against the web surface and causes skip coating.
  • An object of the present invention is to provide an improved fountain applicator for applying liquid coating material onto a paper web, in which the resulting coating on the web is substantially skip free.
  • Another object is to provide such a fountain applicator, in which a sheet of coating liquid is flowed along a curved surface substantially immediately prior to being impinged against the web, to subject the sheet to centrifugal force to cause air entrained in the coating liquid to move toward one side of the sheet away from the curved surface.
  • a further object is to provide such a fountain applicator, in which the sheet of coating liquid, after leaving the curved surface, is directed toward the web in a free standing jet curtain of coating liquid that is impinged against the web, such that the side of the jet curtain of coating liquid that corresponds to the opposite side of the sheet that is relatively free of entrained air contacts the web surface while the other side of the jet curtain of coating liquid is out of substantial contact with the web surface.
  • an apparatus for applying a coating liquid onto a surface of a moving web comprises an elongate concave curved surface that is positionable proximate to, transversely of and spaced from the web; and means for forming an elongate sheet of coating liquid, for flowing the sheet along the curved surface, and for then projecting the sheet in a free standing jet curtain of coating liquid that is directed toward, against and across the surface of the web.
  • the coating liquid sheet upon being flowed along the curved surface, is subjected to centrifugal force to cause air entrained in the coating liquid sheet to move to one side of the sheet that is away from the curved surface.
  • the free standing jet curtain of coating liquid is directed against the web such that a side of the jet curtain of coating liquid, which corresponds to an opposite relatively air-free side of the coating liquid sheet, contacts the web surface, while the other side of the jet curtain of coating liquid is out of substantial contact with the web surface.
  • a side of the jet curtain of coating liquid which corresponds to an opposite relatively air-free side of the coating liquid sheet, contacts the web surface, while the other side of the jet curtain of coating liquid is out of substantial contact with the web surface.
  • the invention also contemplates a method of applying a coating liquid onto a surface of a moving web, which comprises the step of flowing a sheet of coating liquid along an elongate concave curved surface that is proximate to, extends transversely of and is spaced from the web, to subject the coating liquid sheet to centrifugal force to cause air entrained in the coating liquid to move to one side of the sheet that is away from the curved surface.
  • Fig. 1 shows a prior art fountain applicator
  • Fig. 2 shows a fountain applicator that embodies the teachings of the present invention
  • FIG. 3 illustrates a coating supply system of a type that may be used to deliver coating liquid to the fountain applicator of the invention
  • Fig. 4 shows an alternate embodiment of a fountain applicator that incorporates the teachings of the invention.
  • Figs. 5A and 5B are graphs that respectively show the degrees gloss and the Parker Printsurf smoothness of a coating applied onto a web with the fountain applicator of
  • a fountain applicator of a type contemplated by the prior art is shown in Fig. 1 and indicated generally at 20.
  • the applicator is part of a paper coating machine, and extends parallel to and coextensively with a movable support or backing roll 22 which rotates in a direction shown by an arrow 24 and supports a web of paper 26 during its travel past the applicator.
  • the applicator has front and rear walls 28 and 30 that form an elongate metering slot 31 leading to an elongate outlet nozzle 32.
  • the metering slot communicates with a chamber 34 that receives liquid coating material under pressure from a source of material, for flow of the coating liquid upwardly to and through the outlet nozzle, as indicated by the line and arrow.
  • the outlet nozzle extends coextensively with the backing roll 22 and transversely of and across the paper web, and is proximate to and faces the paper web where it is supported on the backing roll.
  • the upper end of the applicator rear wall 30 extends beyond the upper end of the applicator front wall 28 and defines a gap 36 with the web, and where it extends beyond the applicator front wall, the applicator rear wall has a flat surface 38.
  • Coating liquid introduced into the chamber 34 flows upwardly to and out of the outlet nozzle in a sheet of coating liquid 40 that flows across the flat surface 38 at the upper end of the applicator rear wall.
  • the sheet of coating liquid Upon leaving the flat surface, the sheet of coating liquid is directed in a free standing jet curtain of coating liquid against and transversely across the paper web, at an acute included angle a within the web, as the web is moved past the applicator.
  • the free standing jet curtain of coating liquid is impinged against the surface of the backing roll supported paper web 26 to apply onto the web surface an excess layer of coating liquid that is doctored to a desired coat weight by a downstream doctor
  • the invention provides an improved fountain applicator that is uniquely configured to apply onto a surface of a paper web a coating layer that is essentially skip free.
  • Such an applicator is shown in Fig. 2 and is configured to cause air entrained in a coating liquid sheet that is emitted from an elongate fountain outlet nozzle, to move to a side of the sheet that is opposite from the side that is impinged against the web, so that only coating liquid that is relatively free of entrained air contacts the web surface.
  • the radius of the curved surface is selected for the magnitude of centrifugal force desired, the magnitude also being a function of the flow velocity of the coating liquid sheet across the curved surface.
  • the flow velocity of the coating liquid sheet is, in turn, a function of the cross sectional area of the fountain outlet nozzle and of the volume flow rate of coating liquid through the nozzle, and must be such as to ensure that the coating liquid applied onto the paper web completely and uniformly covers the web surface.
  • the fountain applicator of Fig. 2 is indicated generally at 50 and applies onto a surface of a paper web 52, which is carried past the applicator on a backing roll 54 that rotates in a direction as shown by an arrow 56, an excess layer of coating liquid that is doctored to a desired coat weight by a downstream doctor means such as a blade 58.
  • the fountain applicator is part of a paper coating machine, and extends in the cross- machine direction, parallel to the backing roll 54 and transversely of, across and spaced from the backing roll supported web.
  • the applicator has front and rear walls 60 and 62, and attached to the upper end of the rear wall is a plate 64.
  • the front and rear walls and the plate form a chamber 66 therewithin, into which liquid coating material is delivered under pressure via a coating liquid distribution pipe 68 that extends longitudinally through the chamber and has a plurality of coating outlet openings 69 longitudinally spaced therealong.
  • the front and rear walls may be hinged at their lower ends for movement apart to provide access to the chamber 66 for cleaning, for example as taught by U.S. patent No. 4,534,309.
  • a metering slot 70 is defined between the front wall 60 and the plate 64.
  • the metering slot extends upwardly from the chamber 66 and transversely of and across the backing roll supported web 52, and from bottom to top is inclined toward the front of the applicator to enhance a migration of air entrained in the coating liquid toward the side of the metering slot defined by the plate.
  • a replaceable elongate deflector tip 72 is at the upper end of the front wall and an elongate outlet nozzle 74 from the metering slot is at the top of the plate 64 between the plate and the deflector tip.
  • the deflector tip On its side toward the outlet nozzle, the deflector tip has an elongate flat surface 76 and an elongate concave curved surface 78 that is positioned proximate to, transversely of and spaced from the web.
  • the flat surface begins within the metering slot, it may but does not necessarily need to extend upwardly beyond the outlet nozzle, and leads to the curved surface.
  • Coating liquid exiting the elongate outlet nozzle flows in a sheet along the flat surface of the deflector tip to, along and then off of the curved surface in a free standing jet curtain of coating liquid that is directed against and across the web surface at an appropriate included acute angle.
  • the downstream end of the coating liquid flow surface of the deflector tip could terminate in an elongate flat surface (not shown) of relatively limited length beyond the curved surface 78, along which the coating liquid sheet would flow after leaving the curved surface and before being projected toward the web in a free standing jet curtain of coating liquid.
  • adjustable deckle devices may be at opposite ends of the elongate outlet nozzle to control its transverse extent and, therefore, the transverse extent of the sheet of coating liquid, thereby to control the width of the coating layer applied onto the web.
  • a coating supply system may include a covered surge tank 82 for holding a main supply of liquid coating material that is stirred by a motor driven impeller unit 84. Coating liquid flows from the tank through a valve 86 to a pump 88 that delivers the coating liquid under pressure through a valve 90 and a mesh filter 92 to an air removal device 94.
  • the air removal device may be of a conventional type, and operates to remove entrained air from coating liquid supplied from the surge tank and to deliver the removed air, carried in a small portion of the coating liquid, through a valve 96 for return to the surge tank.
  • the remaining coating liquid exiting the air removal device is flowed through a valve 98 into one end of the distribution pipe 68 of the fountain applicator 50.
  • a valve 98 At an opposite end of the distribution pipe there is an outlet 100 from the top of the distribution pipe (Fig. 2) , that leads back to the surge tank through a valve 102.
  • the outlet allows recirculation of a small portion of the coating liquid supplied to the distribution pipe, in order to remove accumulated air from the top of the distribution pipe and enhance a uniform pressure of coating liquid throughout the chamber 66 for uniform application of coating onto the moving web.
  • Valves 104 and 106 selectively direct coating liquid returned from the fountain applicator to the surge tank, to a sewer and/or to reclamation apparatus.
  • a valve 108 is connected between the upstream side of the valve 90 and the surge tank, and a valve 110 at an outlet from the surge tank leads to the sewer or the reclamation apparatus.
  • the valves 86, 90, 96, 98, 102 and 104 are open and the valves 106, 108 and 110 are closed.
  • the various valves are selectively opened or closed to accomplish a desired result (e.g. , to accomodate cleaning of the system with wash water) , as is readily understood by those skilled in the art.
  • coating liquid delivered to the applicator by the coating supply system is introduced into one end of the distribution pipe 68 and flows through the pipe openings 69 into the chamber 66.
  • the air removal device 94 removes from the coating liquid much of the entrained air, but it is not 100 % effective, so some air remains entrained in the coating liquid delivered to the applicator. Some of the remaining air that accumulates at the top of the distribution pipe passes through the outlet 100 and is removed, but some still remains entrained in the coating, and with prior fountain applicators this limited amount of remaining entrained air causes skip coating on a paper web.
  • entrained air remaining in the coating liquid flowed from the chamber 66 and out of the outlet nozzle 74 is prevented from contacting the surface of the web, and therefore from causing skip coating.
  • coating liquid delivered into the chamber 66 flows upwardly through the metering slot 70 and exits the elongate outlet nozzle 74 in an elongate sheet 112 of coating liquid that extends transversely of the paper web 52.
  • the sheet of coating liquid flows along the deflector tip flat surface 76 to the concave curved surface 78, where the sheet is forcefully flowed against the curved surface as its direction of flow changes to conform to the curved surface.
  • Causing the coating liquid sheet to follow the curved surface subjects it to centrifugal force that causes the dense coating liquid to move toward a side 116 of the sheet that is toward the curved surface and the much less dense air entrained in the coating liquid to move toward an opposite side 118 of the sheet that is away from the curved surface.
  • the sheet of coating liquid After flowing along the curved surface, the sheet of coating liquid is projected from the deflector tip in a free standing elongate jet curtain of coating liquid that is directed toward, transversely across and against the paper web surface, such that an included acute angle ⁇ is defined between the plane of the jet curtain of coating liquid and a tangent to the web at the point of contact of the curtain with the web.
  • the minimum centrifugal force to which the sheet of coating liquid 112 is to be subjected is that which just results in application of a substantially skip-free coating onto the paper web 52.
  • the centrifugal force exerted on the sheet of coating liquid is equal to the product of the mass of the coating liquid and its flow velocity squared, divided by the radius of the deflector tip curved surface 78.
  • the mass of the coating liquid may be considered as a constant, which in practical terms means that the centrifugal force may be varied by changing either the flow velocity of the coating liquid sheet or the radius of the curved surface.
  • the flow velocity of the coating liquid sheet is a function of the cross sectional area of the elongate outlet nozzle 74 and of the volume flow rate of coating liquid through it, and is chosen so that the applied coating completely and uniformly covers the web surface. Since there are limits on the minimum volume flow rate of coating liquid required to obtain a uniform coating on the paper web, and since there are practical limits on the maximum volume flow rate of coating liquid that can be forced throught the metering slot 70 and outlet nozzle 74, to subject the coating liquid stream to a desired centrifugal force, it usually is most convenient to control the radius of the deflector tip curved surface 78.
  • the curved surface have a radius on the of about .125" to .500", which is believed to be sufficient to properly densify the coating liquid on the side 116 of the coating liquid sheet that is impinged against the web or, put another way, to cause a sufficient amount of the entrained air to move to the side 118 of the sheet that is out of substantial contact with the web, so that skip coating does not result. It also is contemplated that the curved surface have an arcuate extent in the range of about 45° to 90°, with about 70" likely being optimum.
  • the angle of attack of the free standing jet curtain of coating liquid against the paper web i.e. the included angle between the plane of the curtain of coating liquid and a tangent to the web surface at the point of contact of the curtain with the Web, should be chosen to obtain optimum coating results.
  • good coating results have been experimentally obtained with an included angle of 50° when using an outlet nozzle 74 having a width of .048", with the linear distance between the upper end of the deflector tip curved surface 78 and the point of impact of the coating liquid curtain against the web being on the order of .312", and with the deflector tip flat surface 76 having a length of about .125" in the direction of flow of the coating liquid sheet.
  • these particular parameters may have other values, since the optimum value of each parameter is influenced by and generally dependent upon the values of the other parameters, and it is contemplated that the outlet nozzle have a width in the range of about .025" to .050" and also that the flat surface 76 on the deflector tip could eliminated, in which case the curved surface 78 would begin immediately at the outlet nozzle 74.
  • the coating liquid flow surfaces 76 and 78 of the deflector tip 72 are exposed to the outside of the applicator and located downstream from the metering slot 70 and the elongate outlet nozzle 74, the fluid flow surfaces could be part of and located within the fluid flow path defined by the metering slot 70.
  • the upper end of the plate 64 is extended along, spaced from and curved to conform to the fluid flow surfaces 76 and 78, so that the metering slot then extends along and includes the fluid flow surfaces.
  • the coating liquid sheet is subjected to centrifugal force while within the upper end of the metering slot, an elongate outlet nozzle 74* is at the uppermost end of the deflector tip, and the free standing jet curtain of coating liquid is emitted directly from the elongate outlet nozzle.
  • a run-off deflector 120 is on the outer surface of a chilled water jacket 122 carried on the plate 64.
  • the run-off deflector leads to a return pan, from which coating liquids is returned to the surge tank 82, and the chilled water jacket facilitates cleaning of the run ⁇ off deflector.
  • Figs. 5A and 5B show coating results obtained experimentally when coatings were applied onto the same grade of paper with a fountain applicator constructed according to Fig. 2 and operated according to the teachings of the invention.
  • Fig. 5A shows 75° gloss obtained a ⁇ . various web speeds and
  • Fig. 5B shows Parker Printsurf smoothness measurements obtained at various web speeds.

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  • Paper (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Applicateur du type à aspersion, permettant d'appliquer un enduit liquide sur une bande de papier passant devant l'applicateur. Ce dernier présente un chemin d'écoulement d'enduit comprenant une surface incurvée sur laquelle une nappe d'enduit liquide s'écoule de façon à être soumise à une force centrifuge. Ceci permet de déplacer l'air entraîné dans l'enduit liquide vers un côté de la nappe, l'éloignant ainsi de ladite surface incurvée. Après s'être écoulée sur cette surface, la nappe d'enduit liquide est acheminée vers la bande en un rideau libre formé de jets d'enduit liquide, de sorte que le côté relativement dépourvu d'air de ladite nappe soit mis en contact avec la surface de la bande, tandis que l'autre côté de la nappe n'est pratiquement pas en contact avec ladite surface. La mise en contact de la bande avec un enduit liquide relativement dépourvu d'air entraîné réduit au minimum les sauts de l'enduit sur la bande, en particulier lorsque celle-ci passe devant l'applicateur à des vitesses élevées.
PCT/EP1993/002452 1992-09-11 1993-10-25 Procede de reduction au minimum des sauts d'enduit sur une bande de papier WO1995012031A1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
CA002101358A CA2101358C (fr) 1992-09-11 1993-07-27 Jet applicateur pour l'application d'un revetement sur une trame de papier et methode
BR9307830A BR9307830A (pt) 1992-09-11 1993-10-25 Equipamento para minimizar pintura de gramatura irregular em uma folha de papei
EP93924029A EP0675984B1 (fr) 1992-09-11 1993-10-25 Dispositif et procede de reduction au minimum des sauts d'enduit sur une bande de papier
JP7512371A JP2975689B2 (ja) 1992-09-11 1993-10-25 ペーパーウェブ上の被覆の途切れの最小化方法
ES93924029T ES2131124T3 (es) 1992-09-11 1993-10-25 Aparato y procedimiento para reducir al minimo los saltos de recubrimiento sobre papel continuo.
DE69323214T DE69323214T2 (de) 1992-09-11 1993-10-25 Vorrichtung und verfahren zur minimierung von beschichtungslücken auf einer papierbahn
AT93924029T ATE176021T1 (de) 1992-09-11 1993-10-25 Vorrichtung und verfahren zur minimierung von beschichtungslücken auf einer papierbahn
PCT/EP1993/002452 WO1995012031A1 (fr) 1992-09-11 1993-10-25 Procede de reduction au minimum des sauts d'enduit sur une bande de papier
US08/241,475 US5436030A (en) 1992-09-11 1994-05-12 Apparatus for and method of minimizing skip coating on a paper web
US08/432,431 US5603767A (en) 1992-09-11 1995-04-27 Apparatus for decreasing skip coating on a paper web
FI953126A FI105940B (fi) 1992-09-11 1995-06-22 Menetelmä paperirainan päällystevian minimoimiseksi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94391992A 1992-09-11 1992-09-11
PCT/EP1993/002452 WO1995012031A1 (fr) 1992-09-11 1993-10-25 Procede de reduction au minimum des sauts d'enduit sur une bande de papier

Publications (1)

Publication Number Publication Date
WO1995012031A1 true WO1995012031A1 (fr) 1995-05-04

Family

ID=26070059

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/002452 WO1995012031A1 (fr) 1992-09-11 1993-10-25 Procede de reduction au minimum des sauts d'enduit sur une bande de papier

Country Status (9)

Country Link
EP (1) EP0675984B1 (fr)
JP (1) JP2975689B2 (fr)
AT (1) ATE176021T1 (fr)
BR (1) BR9307830A (fr)
CA (1) CA2101358C (fr)
DE (1) DE69323214T2 (fr)
ES (1) ES2131124T3 (fr)
FI (1) FI105940B (fr)
WO (1) WO1995012031A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0761877A2 (fr) * 1995-09-06 1997-03-12 Voith Sulzer Papiermaschinen GmbH Dispositif d'application directe ou indirecte de matériau fluide ou pâteux sur une bande en mouvement, en particulier de papier ou carton
EP0781884A1 (fr) * 1995-12-29 1997-07-02 Voith Sulzer Papiermaschinen GmbH Appareil d'enduction pour déposer directement ou indirectement un matériau fluide ou pâteux sur une bande en mouvement
WO1998020202A1 (fr) * 1996-11-04 1998-05-14 Valmet Corporation Procede et ensemble utilises pour couvrir de couches une bande de carton en mouvement
US5789023A (en) * 1992-09-11 1998-08-04 Consolidated Papers, Inc. Method of applying coating to a web using centrifugal force
WO1999029958A1 (fr) * 1997-11-21 1999-06-17 Valmet Corporation Poste et procede de couchage
US6214112B1 (en) 1998-04-11 2001-04-10 Voith Sulzer Papiertechnik Patent Gmbh Device for direct or indirect single or double sided application of a liquid or viscous coating medium onto a moving surface
US6319552B1 (en) 1992-09-11 2001-11-20 Stora Enso North America Corp. Method of decreasing skip coating on a paper web

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2101358C (fr) * 1992-09-11 2000-10-24 Wayne A. Damrau Jet applicateur pour l'application d'un revetement sur une trame de papier et methode
US5772766A (en) * 1994-09-09 1998-06-30 Voith Papiermaschinen Gmbh Application unit for the direct or indirect application of a liquid or pasty medium onto a moving material web
EP0701022B1 (fr) * 1994-09-09 2001-04-04 Voith Paper Patent GmbH Appareil d'enduction pour déposer directement ou indirectement un matériau fluide ou pâteux sur une bande en mouvement
JPH09506294A (ja) * 1994-09-09 1997-06-24 フォイト・ズルツァー・パピーアマシーネン・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング 移動中の帯状材に液体ないし糊状物質を直接に又は間接に塗布する塗布装置
FI107278B (fi) * 1996-02-28 2001-06-29 Metso Paper Inc Sovitelma päällystesuuttimen tukkeutumisen estämiseksi
DE10343021A1 (de) * 2003-09-16 2005-04-07 Voith Paper Patent Gmbh Auftragsverfahren
FI120982B (fi) * 2005-02-25 2010-05-31 Metso Paper Inc Verhopäällystysmenetelmä ja sitä soveltava laite
WO2013076849A1 (fr) * 2011-11-24 2013-05-30 フォイト パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング Tête de coucheuse
CN107073504A (zh) 2014-08-15 2017-08-18 福伊特专利有限公司 涂布机

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US4534309A (en) * 1983-11-17 1985-08-13 Consolidated Papers, Inc. Paper coating apparatus
CA2101358A1 (fr) * 1992-09-11 1994-03-12 Wayne A. Damrau Jet applicateur pour l'application d'un revetement sur une trame de papier et methode

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JPS5835105B2 (ja) * 1978-12-25 1983-07-30 富士写真フイルム株式会社 塗布装置

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Publication number Priority date Publication date Assignee Title
US4534309A (en) * 1983-11-17 1985-08-13 Consolidated Papers, Inc. Paper coating apparatus
CA2101358A1 (fr) * 1992-09-11 1994-03-12 Wayne A. Damrau Jet applicateur pour l'application d'un revetement sur une trame de papier et methode

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6592669B2 (en) 1992-09-11 2003-07-15 Stora Enso North America Corp. Apparatus for decreasing skip coating on a paper web
US6319552B1 (en) 1992-09-11 2001-11-20 Stora Enso North America Corp. Method of decreasing skip coating on a paper web
US7338559B2 (en) 1992-09-11 2008-03-04 Stora Enso North America Corp. Apparatus for decreasing skip coating on a paper web
US7211297B2 (en) 1992-09-11 2007-05-01 Stora Enso North America Corp. Apparatus for decreasing skip coating on a paper web
US5968270A (en) * 1992-09-11 1999-10-19 Consolidated Papers, Inc. Apparatus for decreasing skip coating on a paper web
US5789023A (en) * 1992-09-11 1998-08-04 Consolidated Papers, Inc. Method of applying coating to a web using centrifugal force
US5858096A (en) * 1995-09-06 1999-01-12 Voith Sulzer Papiermaschinen Gmbh Application unit for the direct or indirect application of a liquid or pasty medium onto a moving material web
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Also Published As

Publication number Publication date
BR9307830A (pt) 1995-11-28
JPH08508676A (ja) 1996-09-17
FI953126A (fi) 1995-06-22
EP0675984B1 (fr) 1999-01-20
CA2101358C (fr) 2000-10-24
ES2131124T3 (es) 1999-07-16
JP2975689B2 (ja) 1999-11-10
ATE176021T1 (de) 1999-02-15
FI105940B (fi) 2000-10-31
EP0675984A1 (fr) 1995-10-11
FI953126A0 (fi) 1995-06-22
DE69323214D1 (de) 1999-03-04
CA2101358A1 (fr) 1994-03-12
DE69323214T2 (de) 1999-09-09

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