WO2006018111A1 - Dispositif pour revetir des bandes de papier ou de carton - Google Patents

Dispositif pour revetir des bandes de papier ou de carton Download PDF

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Publication number
WO2006018111A1
WO2006018111A1 PCT/EP2005/008230 EP2005008230W WO2006018111A1 WO 2006018111 A1 WO2006018111 A1 WO 2006018111A1 EP 2005008230 W EP2005008230 W EP 2005008230W WO 2006018111 A1 WO2006018111 A1 WO 2006018111A1
Authority
WO
WIPO (PCT)
Prior art keywords
scraper
roller
application
edge
box
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.)
Ceased
Application number
PCT/EP2005/008230
Other languages
German (de)
English (en)
Inventor
Reinhard Knop
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.)
Horst Sprenger GmbH
Original Assignee
Horst Sprenger 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 Horst Sprenger GmbH filed Critical Horst Sprenger GmbH
Publication of WO2006018111A1 publication Critical patent/WO2006018111A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • D21H23/52—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
    • B05C1/0826—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
    • B05C1/083—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 being passed between the coating roller and one or more backing rollers
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • 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 device for coating paper or board webs with two axially parallel juxtaposed rollers which form a gap through which the paper or board web is guided, with an application and metering system for at least one of the rollers, the metered film of coating material is applied to the roll surface, which is delivered in the gap to the paper or board web, and with an edge scraper device with a scraper, in the direction of rotation of the roller behind the application and dosing arranged in at least one edge region of the roller applied Abrading coating material.
  • film presses For finishing paper or board webs with glue, starch or pigment paints, so-called film presses are known as coating devices, which have two rollers which are mounted axially parallel in a frame and form a gap through which the web is guided. The coating material is initially applied to one or both rollers by an application and metering system associated with at least one roller, which then delivers it to the web in the coating gap between the two rollers. Film presses are particularly suitable for double-sided coating of a web, therefore, usually each of the two rollers on a job and dosing on. A coating device of the generic type is described in DE-A-44 31 202.
  • the rollers In order that the paper or board web can be coated over its entire width, which is up to 11 m, the rollers extend in their axial length and the application and metering systems also at least over the entire maximum web width, and usually also over this out.
  • an edge scraper device In order to avoid problems with coating material which is not absorbed by the web at the lateral ends of the rolls not covered by the web, it is known to arrange an edge scraper device in each of these regions.
  • the edge scraper device arranged in the direction of rotation behind the application and metering system and in front of the gap scrapes the coating material from the roll surface again at the respective edge.
  • the Edge scrapers can also be used to create a web with coating-free edges. Then they are slightly wider than the area of the rolls not covered by the web.
  • Edge doctor devices are known in practice, which contain a blade-shaped scraper made of spring plate.
  • the scraper is set at an angle ⁇ smaller than 90 ° against the tangent at the contact line to the roller, wherein the angle of attack is measured from the tangent to the roller in the direction of rotation of the scraper.
  • the scraper operates sluggish, it forms an acute-angled inlet wedge to the roller.
  • Towing scrapers are pushed away from the roller during operation, especially at high speeds, by the coating material with very high forces. They must therefore be pressed against the roller for a reliable function with correspondingly large contact forces.
  • the wedge-shaped geometry of the inlet gap has the further disadvantage that the scraped coating material is not safely dissipated. To leave the inlet gap, the scraped-off coating material must reverse its direction of movement. When coating with pigment paints, abrasive caking forms on the scraper edge at the point of reversal, from which the roll surface, usually made of rubber-like elastomer, is damaged.
  • the invention is therefore based on the object to improve a device of the generic type so that a safe scraping of coating material at high speeds without the disadvantages described above is possible.
  • the scraper of the edge scraper device made of polyethylene or a plastic with comparable properties and as a stabbing scraper with an angle between 140 ° and 175 °, preferably between 160 ° and 165 °, to the tangent of Roller is employed, and that between the application and metering system and the scraper, a return seal is arranged, which prevents running back of the scraped coating material for application and Dosiersys ⁇ system.
  • a scraper arranged with a sharp end does not have the disadvantages of a sluggishly arranged scraper as stated in the introduction.
  • the features according to the invention ensure that the scraper arranged in a stinging manner does not penetrate the rubber coating of the Roller buried and that the scraped coating material does not run back to Auf ⁇ lags and dosing and thus disturbs the order of a metered film.
  • the subclaims contain preferred, as particularly advantageous embodiments, a coating device according to the invention.
  • FIG. 2 shows an enlarged detail of the application and metering system with the subsequently arranged edge scraper device.
  • the coating apparatus shown in the drawing is integrated in a paper machine. It consists of two axially parallel side by side in a frame rotatably ge stored rollers 1, 2, of which one roller is fixed, the other roller circumferentially ge the stationary roller is mounted pressable. Both rollers 1, 2 are connected to a rotary drive with which they can be rotated in opposite directions in the direction of the arrows 3, 4 about their longitudinal axes. Both rolls 1, 2 are gummed on their outer surface. When pivoting the rollers 1, 2 against each other, a press nip 5, through which the paper or board web 6 to be coated - in the example coming from above - is guided.
  • an application and metering system 7, 8 is arranged on the opposite side to the press nip 5, which can be pivoted to the respective roller 1, 2.
  • coating material in example pigment coating paint
  • coating material is first applied in excess to the lateral surface of the associated roller 1, 2 and then scraped off again down to the desired film thickness.
  • the film of coating material applied to the rollers 1, 2 is delivered to the web 6 in the press nip 5.
  • the application and metering systems 7, 8 are fastened in a known manner in each case to an an ⁇ pivotable scraper bar 9, 10 and constructed in a known manner: they each contain an open to the roller 1, 2 application chamber 11, which consists of a distribution pipe 12th Coating material is added. On the outlet side, the application chamber 11 is closed by a metering system, that as a metering a doctor rod 13th contains.
  • the doctor bar 13 is held in a doctor bed 14, which is supported by a pressure hose 15 in known manner on its rear side. The doctor rod 13 is pressed against the respective roller 1, 2, that sets the desired film thickness of coating material on the surface thereof.
  • the application chamber 11 On the inlet side, the application chamber 11 is delimited by an overflow plate 16 which leaves an overflow gap for the respective roller 1, 2, through which the excess of coating material emerges and is collected by a collecting trough 17.
  • an edge scraper device 18, 19 is arranged at each end of each of the two rollers 1, 2. There are thus a total of four edge scraper devices, of which two are shown in FIG. The edge scraper devices 18, 19 have the same structure. Her structure will be explained in more detail on the device 19 shown enlarged in Figure 2 on the roller 2:
  • the edge scraper device 19 contains a limited elastic scraper 20, which is made in the form of a blade made of polyethylene or a plastic with comparable properties.
  • the width of the scraper 20 measured in the axial direction of the roller 2 is usually 50 mm to 300 mm.
  • the scraper 20 as a stabbing Scha ⁇ ber at an angle ⁇ to the tangent at the point of contact to the roller 2 ange ⁇ provides, which measured from the tangent in the direction of rotation of the roller 2 140 ° -175 °, preferably 160 ° - 165 ° ,
  • the thickness of the scraper 20 is 2 mm - 7 mm.
  • the scraper 20 is undercut at its adjacent to the roller 2 edge so that the wading angle corresponds to the angle of attack. The result is a contact surface, which is parallel to the roller tangent, of the scraper 20 with the roller 2.
  • a return seal is arranged in each case, which prevents running back of substitute ⁇ scraped coating material, without the incoming layer of Be ⁇ coating material is appreciably affected.
  • the width of the return seal in Achs ⁇ direction of the rollers 1, 2 corresponds at least to the width of the scraper 20, preferably it is slightly wider.
  • the return seal is formed in the preferred embodiment of a sluggish blade 21, which does not act as a scraper, so shaved no coating material. So that the blade 21 floats on the film on Be istungsma ⁇ material, it is employed at a shallow angle of less than 30 ° against the tangent to the rollers 2.
  • the return seal is made of a thin spring steel of, for example, 0.3 mm thick.
  • resilient blade-like or wedge-shaped plastic parts which float on the film without coating material and thus prevent the material scraped off by the scraper 20 from running back without the use of coating material can be used as the return seal.
  • the return seal may also be formed as a rigid gap designed to prevent return of coating material without affecting the film passing therethrough.
  • the scraper 20 and the return seal are attached to an open to the roller 1, 2 out, otherwise closed and provided with a paint outlet box 22, wherein the return seal (blade 21) the box on the inlet side, the scraper 20 the box 22 bounded on the outlet side.
  • the box 22 absorbs the scraped-off coating material as splash protection and conducts it in a controlled manner via a color sequence not shown in FIG.
  • a return of scraped-off coating material to the application and metering system 7, 8 is prevented, but also any impairment of the application and contamination of the coating device due to spray-coating paint.
  • the box 22 with the parts fastened thereto can preferably be pivoted apart from the associated application and metering system 7, 8 against the respective roller 1, 2 in order to bring the scraper 20 and the blade 21 into their operating position. Independently of the application and dosing system 7, 8, the contact pressure of the scraper 20 can thus be adjusted to constant values and its wear compensated.
  • the box 22 is pivotally mounted on a holder 23 which is fixed on the top of the scraper bar 10.
  • a preferred pneumatic piston-cylinder unit 24 engages, which is likewise fastened to the scraper bar 10.
  • the box 22 with the scraper 20 and the return seal can be so swing together with the scraper 10 and the attached order and dosing 8 in a maintenance position, on the other hand, an additional pivotal movement of the box 22 to the roller 2 out with a stationary scraper 10 is possible.
  • this preferably contains a moistening device.
  • the moistening device consists of mist nozzles arranged in the box 22, which spray water in order to keep the interior of the box sufficiently moist in order to avoid sticking.

Landscapes

  • Coating Apparatus (AREA)

Abstract

La présente invention concerne des dispositifs pour revêtir des bandes de papier ou de carton, se caractérisant par les éléments suivants: deux cylindres (1, 2) disposés l'un à côté de l'autre, dont les axes sont parallèles entre eux, qui forment un espace (5) par lequel est guidée la bande de papier ou de carton (6); un système d'application et dosage (7, 8) destiné à au moins l'un des rouleaux (1, 2), appliquant un fil dosé de matière de revêtement sur la surface du rouleau, ledit film étant transmis dans l'espace (5) à la bande de papier ou de carton (6); et un système de raclage marginal (18, 19) comprenant un racloir (20) qui, dans la direction de rotation du cylindre (1, 2), est disposé en aval du système d'application et dosage (7, 8) et sert à racler la matière de revêtement appliquée dans au moins une zone marginale du cylindre (1, 2). Selon l'invention: le racloir (20) du système de raclage marginal (18, 19) est réalisée à partir de polyéthylènes ou d'une matière plastique de propriétés comparables, et est réglé en tant que racloir incliné (20) avec un angle d'incidence a compris entre 140° et 175°, de préférence entre 160° et 165°, au niveau de la tangente au cylindre (1, 2); et entre le système d'application et dosage (7, 8) et le racloir (20) se trouve un joint anti-retour (21) qui empêche le retour de la matière de revêtement enlevée par raclage, vers le système d'application et dosage (7, 8).
PCT/EP2005/008230 2004-08-11 2005-07-29 Dispositif pour revetir des bandes de papier ou de carton Ceased WO2006018111A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004039162.9 2004-08-11
DE200410039162 DE102004039162B4 (de) 2004-08-11 2004-08-11 Vorrichtung zum Beschichten von Papier- und Kartonbahnen

Publications (1)

Publication Number Publication Date
WO2006018111A1 true WO2006018111A1 (fr) 2006-02-23

Family

ID=35005703

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/008230 Ceased WO2006018111A1 (fr) 2004-08-11 2005-07-29 Dispositif pour revetir des bandes de papier ou de carton

Country Status (2)

Country Link
DE (1) DE102004039162B4 (fr)
WO (1) WO2006018111A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107199158A (zh) * 2017-07-28 2017-09-26 苏州中芯原微电子有限公司 一种液压缸控制式涂布刮刀装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010052649A1 (de) 2010-11-30 2012-05-31 Horst Sprenger Gmbh Vorrichtung zum Beschichten von Papier- oder Kartonbahnen
DE102021133212A1 (de) * 2021-12-15 2023-06-15 Voith Patent Gmbh Schaber und Beschichtungsvorrichtung
DE102023106581A1 (de) 2023-03-16 2024-09-19 Voith Patent Gmbh Vorrichtung und Verfahren

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482309A1 (fr) * 1990-10-22 1992-04-29 JAGENBERG Aktiengesellschaft Dispositif pour revêtir les deux faces d'un matériau en bande
EP0499382A1 (fr) * 1991-02-14 1992-08-19 Ward Holding Company, Inc. Support pour racle et machine à imprimer avec ce support
DE4243518A1 (de) * 1992-12-22 1994-01-13 Feldmuehle Ag Stora Vorrichtung zum Auftrag von Flüssigkeit auf beide Seiten einer Materialbahn und Verfahren zum Auftrag einer Flüssigkeit auf eine Materialbahn mit dieser Vorrichtung
EP0781608A2 (fr) * 1995-12-28 1997-07-02 Valmet Corporation Dispositif d'application d'un agent de revêtement sur un support mobile
US6746575B1 (en) * 1998-11-16 2004-06-08 Metso Paper, Inc. Doctor for a suction roll particularly in paper machines

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US3518964A (en) * 1968-05-02 1970-07-07 Bergstrom Paper Co Coating applicator with surrounding chamber
SE419946B (sv) * 1974-10-16 1981-09-07 Inventing Ab Sett och anordning for bestrykning av en lopande bana
US4440809A (en) * 1983-01-17 1984-04-03 Consolidated Papers, Inc. Method and apparatus for recirculating coating liquid in a paper coating apparatus
FI72904C (fi) * 1985-03-07 1987-08-10 Waertsilae Oy Ab Anordning foer dubbelsidig belaeggning av en pappersbana.
US4860686A (en) * 1986-11-26 1989-08-29 Beloit Corporation Coating width regulating apparatus
DE4431202A1 (de) * 1994-09-02 1996-03-07 Jagenberg Papiertech Gmbh Vorrichtung zum beidseitigen Beschichten einer Materialbahn
DE19826647A1 (de) * 1998-06-16 1999-12-23 Voith Sulzer Papiertech Patent Verfahren zum Reinigen einer weichen Walzenoberfläche

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482309A1 (fr) * 1990-10-22 1992-04-29 JAGENBERG Aktiengesellschaft Dispositif pour revêtir les deux faces d'un matériau en bande
EP0499382A1 (fr) * 1991-02-14 1992-08-19 Ward Holding Company, Inc. Support pour racle et machine à imprimer avec ce support
DE4243518A1 (de) * 1992-12-22 1994-01-13 Feldmuehle Ag Stora Vorrichtung zum Auftrag von Flüssigkeit auf beide Seiten einer Materialbahn und Verfahren zum Auftrag einer Flüssigkeit auf eine Materialbahn mit dieser Vorrichtung
EP0781608A2 (fr) * 1995-12-28 1997-07-02 Valmet Corporation Dispositif d'application d'un agent de revêtement sur un support mobile
US6746575B1 (en) * 1998-11-16 2004-06-08 Metso Paper, Inc. Doctor for a suction roll particularly in paper machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107199158A (zh) * 2017-07-28 2017-09-26 苏州中芯原微电子有限公司 一种液压缸控制式涂布刮刀装置

Also Published As

Publication number Publication date
DE102004039162B4 (de) 2013-03-14
DE102004039162A1 (de) 2006-02-23

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