EP0651094B1 - Vorrichtung zum Beschichten einer Materialbahn, insbesondere einer Papier- oder Kartonbahn - Google Patents

Vorrichtung zum Beschichten einer Materialbahn, insbesondere einer Papier- oder Kartonbahn Download PDF

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Publication number
EP0651094B1
EP0651094B1 EP94115241A EP94115241A EP0651094B1 EP 0651094 B1 EP0651094 B1 EP 0651094B1 EP 94115241 A EP94115241 A EP 94115241A EP 94115241 A EP94115241 A EP 94115241A EP 0651094 B1 EP0651094 B1 EP 0651094B1
Authority
EP
European Patent Office
Prior art keywords
web
mating roll
strip
holder
rear side
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
EP94115241A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0651094A1 (de
Inventor
Heinz Leineweber
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 Paper Jagenberg GmbH
Original Assignee
Jagenberg Papiertechnik 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 Jagenberg Papiertechnik GmbH filed Critical Jagenberg Papiertechnik GmbH
Publication of EP0651094A1 publication Critical patent/EP0651094A1/de
Application granted granted Critical
Publication of EP0651094B1 publication Critical patent/EP0651094B1/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
    • 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
    • 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
    • B05C11/04—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 with blades
    • B05C11/041—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 with blades characterised by means for positioning, loading, or deforming the blades
    • B05C11/042—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 with blades characterised by means for positioning, loading, or deforming the blades allowing local positioning, loading or deforming along the blades
    • 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
    • B05C11/04—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 with blades
    • B05C11/045—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 with blades characterised by the blades themselves

Definitions

  • the invention relates to a device for coating a material web, in particular a paper or cardboard web, according to the preamble of patent claim 1.
  • devices which have an application unit (roller or nozzle application unit) with which the coating material, for. B. coating color, is applied in excess to the web.
  • a metering system arranged after the applicator with a scraper knife as metering element scrapes the excess off to the desired coat weight, the height of the coat weight being adjustable via the contact pressure of the scraper knife on the counter roller.
  • the scraper knife is supported below its tip by an adjacent support bar, so that its contact pressure can be varied by moving and / or pivoting the clamped scraper knife foot.
  • DE-OS 39 27 329 describes a generic coating device in which piezo translators are used as adjusting elements for the support bar. According to one embodiment, springs counteract the pressing of the support bar with the piezo translators, wherein the counterforce of the springs can be adjusted.
  • Supporting the scraper knife with a support bar has the advantage that there is a precisely defined support edge.
  • the coating weight can be adjusted very constantly and evenly in the direction of web travel. Results once achieved can be reproduced with great accuracy, so that these systems are ideally suited for automation.
  • a cross profile once set remains less constant. The cross profile must therefore be readjusted more frequently during operation.
  • the invention has for its object to improve a generic coating device so that a uniform application in the web running direction as well as transverse to this can be set reproducibly, the uniformity is maintained even with changes in the coating weight.
  • the invention has the further advantage that existing coating devices can be converted without major design changes.
  • Profiling with adjusting elements e.g. adjusting screws
  • a conventional support bar is still possible.
  • the coating device has a driven counter roller 1, from which the material web 2 - a paper or cardboard web with a width of 8 m and more - is deflected. Excess coating material is applied to the material web 2 by a coating unit (not shown), which is doctored down to the desired coat weight by a metering system with an elastically bendable doctor knife 3 as a metering element.
  • the scraper knife 3 is clamped with its foot in a clamping bar 5 which is displaceably mounted in the direction of the counter roller 1 in a scraper bar 4. It is supported on its rear side facing away from the counter roll 1 below its tip by a support bar 6 which is elastically flexible in the direction of the counter roll 1.
  • the contact pressure of the scraper knife 3 against the counter roller 1 can be adjusted by moving and / or pivoting the clamping bar 5 relative to the support bar 6 which extends over the entire width of the web.
  • the support bar 6 is slidably mounted in the direction of the counter roller 1 in a holder 7, 8, which consists of a base plate 7 screwed onto the scraper beam 4 and a cover plate 8 screwed onto the base plate 7.
  • the holder 7, 8 has an approximately rectangular recess, which extends over the working width, and has an opening slot, from which the support bar 6 is attached with its Support edge protrudes.
  • the support bar 6 is widened like a bead at its rear end above and below the height of the recess within the holder 7, 8. At its rear end facing away from the counter-roller 1, it is supported by a profile bar 9 lying flat against the upper and lower edges of the rear side, which also extends over the entire working width of the coating device.
  • the widenings of the support bar 6 are narrower than the length of the free space in the holder 7, 8 between the end of the profile bar 9 and the front wall of the holder 7, 8, so that the support bar 6 is freely movable in the direction of the counter roller 1 via an adjustment path.
  • set screws 10 are fastened at regular intervals and are guided through a bore in the rear wall of the base plate 7. With the set screws 10 designed as tension and compression screws, the profile strip 9 can be set locally differently over the working width at a distance from the counter roller 1.
  • the contacting sides of the support bar 6 and the profile bar 9 each have a groove extending over the working width.
  • a pressure hose 11 is inserted, which is connected on one side to a compressed air supply, not shown.
  • the pressure hose 11 is protected by two bands 12 made of stainless spring steel, which are arranged between its front surface and the support strip 6 and its rear surface and the profile strip 9.
  • Two further pressure hoses 13, 14 are inserted into the free spaces between the front wall of the base plate 7 or the cover plate 8 and the widened rear end of the support bar 6. The pressure hoses 13, 14 are thus able to press the support bar 6 away from the counter roller 1 in the direction of the profile bar 9.
  • the support bar 6 is made of a wear-resistant plastic. As shown in FIG. 2, it has slots 15 on its rear side facing away from the counter-roller 1 at regular intervals (for example every 25 mm) in order to be able to adapt to a contour as smoothly as possible.
  • the profile bar 9 shown in FIG. 3 is also provided on its rear side facing away from the counter-roller 1 at regular intervals with slots 16 which also extend in the web running direction; it can be so bend in limits.
  • the profile bar 9 is constructed from one piece or from a large number of individual segments and is made of metal.
  • a basic position of the support bar 6 is first set using the adjusting screws 10. This takes place when the pressure hose 11 is vented while the pressure hoses 13, 14 are under pressure. Even before the web 2 is drawn into the coating device, the scraper bar 4 with the scraper knife 3 and the support bar 6 is pivoted to the counter-roller 1 and applied to this coating color by the coating unit (not shown). The thickness and uniformity of the film on the counter roller 1 is determined by the contact pressure of the doctor knife 3 u. a. adjusted with the set screws 10.
  • the adjusting profile 10 is used to fine-tune the line profile on the web 2.
  • the pressure hoses 13, 14 pushing away from the counter-roller 1 are vented and the pressure hose 11 is pressurized.
  • the pressure in the pressure hose 11 is set such that the support bar 6 just gets into a floating state without leaving its contact with the profiling bar 9, that is to say the pressure hose 11 exactly compensates the forces pushing the scraper knife 3 away from the counter-roller 1.
  • the support bar 6 is thus able to move in individual areas in the direction of the counter-roller 1 and to counteract changes automatically in order to keep the transverse profile uniform.
  • the line weight is adjusted and kept constant in the web running direction in a known manner via the contact pressure of the scraper knife 3 by pivoting and / or shifting the clamping bar 5. This can be done manually or by an automatic system.
  • adjustment screws 10 are used to adjust.
  • the readjustment can either take place while the pressure hose 11 is under pressure or, as with the fine adjustment, while the pressure hose 11 is vented.
  • the device also offers the possibility of pressurizing both hose systems (pressure hose 11 and pressure hoses 13, 14) and thus controlling the coating weight via the differential pressure. It is also possible, as with a conventional support bar, to mechanically support the pressure away from the counter-roller 1. For this purpose, the pressure hose 11 is vented and the pressure hoses 12, 13 are pressurized.
  • the use of the device according to the invention for direct metering on the web 2 is described above. It can also be used to create a uniform film on a roller, which is then transferred from the roller to a web.

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
EP94115241A 1993-10-11 1994-09-28 Vorrichtung zum Beschichten einer Materialbahn, insbesondere einer Papier- oder Kartonbahn Expired - Lifetime EP0651094B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4334556A DE4334556A1 (de) 1993-10-11 1993-10-11 Vorrichtung zum Beschichten einer Materialbahn, insbesondere einer Papier- oder Kartonbahn
DE4334556 1993-10-11

Publications (2)

Publication Number Publication Date
EP0651094A1 EP0651094A1 (de) 1995-05-03
EP0651094B1 true EP0651094B1 (de) 1996-07-31

Family

ID=6499845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94115241A Expired - Lifetime EP0651094B1 (de) 1993-10-11 1994-09-28 Vorrichtung zum Beschichten einer Materialbahn, insbesondere einer Papier- oder Kartonbahn

Country Status (5)

Country Link
EP (1) EP0651094B1 (fi)
AT (1) ATE140987T1 (fi)
DE (2) DE4334556A1 (fi)
ES (1) ES2094018T3 (fi)
FI (1) FI944748A (fi)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19537781A1 (de) * 1995-10-11 1997-04-17 Leybold Ag Beschichtungsanlage für Folien
DE19617458A1 (de) * 1996-05-02 1997-11-06 Jagenberg Papiertech Gmbh Abstützsystem für das Dosierelement einer Beschichtungsvorrichtung
DE19626580A1 (de) * 1996-07-02 1998-01-08 Jagenberg Papiertech Gmbh Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
DE19738356A1 (de) * 1997-09-02 1999-03-04 Voith Sulzer Papiermasch Gmbh Einrichtung zum Abstreifen oder/und Dosieren eines flüssigen bis pastösen Mediums auf einer sich vorbeibewegenden Arbeitsfläche; Stichwort: Schwimmendes Rakel
DE19753899A1 (de) 1997-12-05 1999-06-10 Jagenberg Papiertech Gmbh Pneumatisch betätigbares Stellelement, insbesondere zur Regulierung des Querprofils in einer Beschichtungsvorrichtung für Papier- oder Kartonbahnen
DE19755411A1 (de) 1997-12-12 1999-06-17 Voith Sulzer Papiertech Patent Rakelvorrichtung
DE102009002017A1 (de) * 2009-03-31 2010-10-07 Voith Patent Gmbh Vorrichtung und Verfahren zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2528907A1 (de) * 1975-06-28 1977-01-20 Karl Hehl Formenschliesseinheit mit sicherheitsabdeckung
DE2825907B2 (de) * 1978-06-13 1981-02-26 Jagenberg-Werke Ag, 4000 Duesseldorf Vorrichtung zum Aufbringen einer Beschichtung auf eine Materialbahn
US4452833A (en) * 1982-02-08 1984-06-05 Consolidated Papers, Inc. Paper coating method
DE3927329A1 (de) * 1989-08-18 1991-02-21 Jagenberg Ag Vorrichtung zum beschichten einer um eine gegenwalze gefuehrten materialbahn
DE3934986A1 (de) * 1989-10-20 1991-04-25 Jagenberg Ag Vorrichtung zum beschichten einer um eine gegenwalze gefuehrten materialbahn
US5077095A (en) * 1990-05-17 1991-12-31 Beloit Corporation Flexible blade coating arrangement and method with compound blade loading
FI91025C (fi) * 1991-02-08 1995-08-22 Valmet Paper Machinery Inc Menetelmä paperin tai muun rainamateriaalin päällystemäärän poikkiprofiilin säätämiseksi ja menetelmän toteuttamiseen tarkoitettu päällystysasema
DE9103570U1 (de) * 1991-03-21 1992-07-23 Zimmer, Johannes, Klagenfurt, Kärnten Rakelgerät
DE4207731A1 (de) * 1992-03-11 1993-09-16 Jagenberg Ag Abstuetzleiste fuer eine beschichtungsvorrichtung
DE4230276A1 (de) * 1992-09-10 1994-03-17 Voith Gmbh J M Streicheinrichtung für laufende Bahnen, insbesondere Papier oder Karton

Also Published As

Publication number Publication date
ATE140987T1 (de) 1996-08-15
ES2094018T3 (es) 1997-01-01
FI944748A (fi) 1995-04-12
EP0651094A1 (de) 1995-05-03
FI944748A0 (fi) 1994-10-10
DE59400472D1 (de) 1996-09-05
DE4334556A1 (de) 1995-04-13

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