EP0307618B1 - Vorrichtung zum Beschichten einer um eine Gegenwalze geführten Materialbahn - Google Patents

Vorrichtung zum Beschichten einer um eine Gegenwalze geführten Materialbahn Download PDF

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Publication number
EP0307618B1
EP0307618B1 EP88112976A EP88112976A EP0307618B1 EP 0307618 B1 EP0307618 B1 EP 0307618B1 EP 88112976 A EP88112976 A EP 88112976A EP 88112976 A EP88112976 A EP 88112976A EP 0307618 B1 EP0307618 B1 EP 0307618B1
Authority
EP
European Patent Office
Prior art keywords
clamping bar
coating
adjusting elements
working width
blade
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
EP88112976A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0307618A1 (de
Inventor
Herbert Sommer
Peter Rieleit
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.)
Jagenberg AG
Original Assignee
Jagenberg AG
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 AG filed Critical Jagenberg AG
Priority to AT88112976T priority Critical patent/ATE69980T1/de
Publication of EP0307618A1 publication Critical patent/EP0307618A1/de
Application granted granted Critical
Publication of EP0307618B1 publication Critical patent/EP0307618B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades

Definitions

  • the invention relates to a device for coating a material web guided around a counter roller with an elastic doctor blade, the foot of which is clamped in a clamping bar and which is supported below its tip by a support strip, and with adjusting elements for influencing the contact pressure, which are arranged across the knife width individual areas of the doctor knife act independently of each other.
  • Coating devices of this type are used in particular for coating paper and cardboard.
  • the doctor blade arranged after the application unit doses the coating color to the desired coat weight.
  • the line quality is decisively influenced by the geometry of the doctor knife in its area adjacent to the counter roller.
  • the coating weight is adjusted via the contact pressure of the doctor knife against the counter roller, which is determined by the pretension of the doctor knife. In order to avoid line quality losses, it is with a variation of the contact pressure required that the geometry of the doctor knife tip be kept substantially constant.
  • the flexible support strip can be adjusted along the support line via tension and compression screws, depending on whether the coat weight is too high or too low at the corresponding points.
  • the invention has for its object to provide a generic device for coating, in which a local correction of the coat weight over the working width is possible via the contact pressure without changing the geometry of the doctor blade tip at the same time.
  • Pre-tensioning set at the start of the stroke The support line that determines the preload is left unchanged.
  • the cross-section correction is carried out by adjusting the scraper knife foot in the clamping bar and thus at a maximum distance from the support bar. Therefore, in these embodiments, the geometry of the doctor blade tip is not changed during the cross-section correction.
  • Fig. 1 shows a section in the web running direction through a device with a flexible, locally adjustable clamping bar.
  • FIG. 2 shows a perspective transverse to the path of FIG. 1.
  • FIG 3 shows a section through a coating device with a cross-profile correction device integrated in the clamping bar.
  • FIG. 4 schematically shows the correction of the line weight cross profile in a device according to FIG. 3.
  • FIGS. 1 and 2 contains a metering system, consisting of a pivotable scraper bar 1, in which a clamping bar 2, which is flexible transversely to the web within limits, is mounted so as to be displaceable in the direction of the counter-roller 3.
  • a scraper knife 4 is releasably clamped on its base in the clamping bar 2.
  • a support bar 6 engages on the scraper knife 4, which is also slidably fastened on the scraper bar 1 approximately parallel to the clamping bar 2.
  • the support bar 6, which extends over the working width, is slotted at regular intervals on the side opposite the support line and is therefore flexible within limits. Adjusting screws 7 arranged on this side engage at regular intervals, which enable manual adjustment of a locally different contact pressure across the width of the scraper knife 4.
  • the flexible clamping bar 2 can be adjusted locally differently in the direction of the counter roller 3 by means of screw jacks 8 which are arranged at regular intervals (approx. 50-100 mm) over the working width.
  • the screw jacks 8 each have a drive 8.1, which is controlled by a control device, not shown, with a measuring device for determining the cross profile of the coating weight.
  • the drives 8.1 of the screw jacks 8 can be coupled so that they can be adjusted together to set the pretension at the beginning of the coating process.
  • pneumatically or hydraulically operated adjusting elements or thermal expansion elements, for. B. expansion rods can be used.
  • the cross-profile correction device is integrated in the clamping bar, which can be adjusted approximately horizontally in a range of approximately 20 mm.
  • the base of the scraper knife 4 is clamped between the approximately vertical leg 9 of an angle bar and a back pressure hose 10 fastened in the clamping bar 2.
  • the approximately horizontal leg 11 of the angle bar - it is located below the counterpressure hose 10 - is provided with regular slits at the end over the working width and ends when the scraper knife 4 is clamped in at a certain distance from the clamping bar 2. This allows limits (approx. 3 - 4 mm) an approximately horizontal displacement of the doctor blade flow relative to the clamping bar 2.
  • bellows 12 causes, which rest on the vertical leg 9 of the angle bar on the side facing away from the doctor blade 4.
  • Each bellows 12 has its own supply line 13 for air or liquid, so that the pressure in each bellows 12 can be regulated individually.
  • the back pressure hose 10, which extends over the working width, has a compressed air supply with which a preselected, constant back pressure can be set.
  • the associated control device for regulating the pressure distribution in the bellows 12 as a function of the transverse profile of the coating weight is not shown in FIG. 3.
  • FIG. 4 The operation of the device according to FIG. 3 is illustrated in FIG. 4.
  • the geometry and the contact pressure of the doctor knife tip are set to the desired target coating weight (line a).
  • the pretension of the scraper knife 4, which is decisive for the contact pressure, is set in the scraper bar 1 by moving the support bar 6 and the clamping bar 2 relative to one another.
  • a uniform cross profile of the coat weight is achieved.
  • a measuring device continuously measures the line weights in individual transverse areas of the paper web. The permissible range of the coat weight is limited in FIG. 4 by lines b and c.
  • the control device increases the pressure in the bellows 12, which act on the doctor blade 4 in these areas.
  • the clamped part of the scraper knife 4 is elastically deformed in these areas in the direction of the counter-pressure hose 10.
  • the area diagram d shows the necessary pressure distribution in the individual bellows 12 in order to compensate for the impermissibly high coat weight in the area b. Accordingly, the pressure in individual bellows 12 is reduced if the coat weight in the associated areas is too low.
  • the cross-profile correction is carried out analogously.
  • the screw jacks 8 which were coupled for prestressing, are decoupled from one another and adjusted individually in a controlled manner.
  • the areas of the clamping bar 2 in which an excessively high coat weight is dosed are adjusted away from the counter-roller 3 by means of the screw jacks 8. Since the scraper knife foot is immovably clamped in the flexible clamping beam 2, it is also adjusted so that the coating weight is reduced in the corresponding area.

Landscapes

  • Coating Apparatus (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Details Of Indoor Wiring (AREA)
EP88112976A 1987-09-04 1988-08-10 Vorrichtung zum Beschichten einer um eine Gegenwalze geführten Materialbahn Expired - Lifetime EP0307618B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88112976T ATE69980T1 (de) 1987-09-04 1988-08-10 Vorrichtung zum beschichten einer um eine gegenwalze gefuehrten materialbahn.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873729621 DE3729621A1 (de) 1987-09-04 1987-09-04 Vorrichtung zum beschichten einer um eine gegenwalze gefuehrten materialbahn
DE3729621 1987-09-04

Publications (2)

Publication Number Publication Date
EP0307618A1 EP0307618A1 (de) 1989-03-22
EP0307618B1 true EP0307618B1 (de) 1991-12-04

Family

ID=6335236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112976A Expired - Lifetime EP0307618B1 (de) 1987-09-04 1988-08-10 Vorrichtung zum Beschichten einer um eine Gegenwalze geführten Materialbahn

Country Status (7)

Country Link
US (1) US4899687A (enrdf_load_stackoverflow)
EP (1) EP0307618B1 (enrdf_load_stackoverflow)
JP (1) JPS6490062A (enrdf_load_stackoverflow)
AT (1) ATE69980T1 (enrdf_load_stackoverflow)
BR (1) BR8804540A (enrdf_load_stackoverflow)
DE (2) DE3729621A1 (enrdf_load_stackoverflow)
FI (1) FI884050A7 (enrdf_load_stackoverflow)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI85895C (fi) * 1988-11-18 1992-06-10 Valmet Paper Machinery Inc Foerfarande foer kompensation av boejningen hos en schaber och boejningskompenserad schaber.
DE3908386A1 (de) * 1989-03-15 1990-09-27 Jagenberg Ag Verfahren und vorrichtung zum beschichten von materialbahnen, insbesondere von papier- oder kartonbahnen
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
US5147462A (en) * 1990-02-16 1992-09-15 Alcan Aluminum Corporation Apparatus for automatic film thickness control
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
FI100313B (fi) * 1991-05-09 1997-11-14 Valmet Corp Menetelmä ja laite liikkuvan alustan päällystämiseksi
DE9109787U1 (de) * 1991-08-07 1991-09-26 J.M. Voith Gmbh, 7920 Heidenheim Einspannvorrichtung für Klingen, insbesondere in Streichmaschinen
SE9102783L (sv) * 1991-09-25 1992-12-21 Btg Kaelle Inventing Ab Anordning och foerfarande foer bladbestrykning av en loepande bana
DE4207731A1 (de) * 1992-03-11 1993-09-16 Jagenberg Ag Abstuetzleiste fuer eine beschichtungsvorrichtung
US5733373A (en) * 1992-03-11 1998-03-31 Jagenberg Aktiengesellschaft Pressure strip for coating device
EP0633959B1 (en) * 1992-03-31 1997-01-02 Minnesota Mining And Manufacturing Company Roll gap controller
DE4341341C1 (de) * 1993-12-06 1995-03-09 Jagenberg Ag Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
US5480486A (en) * 1993-12-21 1996-01-02 Beloit Technologies, Inc. Continuous adjustable backing bar for profiling coater blade
DE4433048A1 (de) * 1994-09-16 1996-03-21 Tzn Forschung & Entwicklung Verfahren und Vorrichtung zum kontinuierlichen Aufbringen einer Beschichtung auf eine Materialbahn
DE29600016U1 (de) * 1996-01-02 1996-02-22 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Auftragswerk
DE19624804A1 (de) * 1996-06-21 1998-01-02 Jagenberg Papiertech Gmbh Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
DE29611194U1 (de) * 1996-06-26 1996-09-05 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Befestigungseinrichtung
EP0821102B1 (de) * 1996-07-08 2002-03-27 Voith Paper Patent GmbH Auftragwerk zum direkten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
US5738724A (en) * 1996-08-06 1998-04-14 Westvaco Corporation Actuator assembly for coater blade load adjustment
US6261368B1 (en) * 1999-01-08 2001-07-17 Beloit Technologies, Inc. Short dwell coater with cross machine direction profiling
US6818062B2 (en) * 2001-10-29 2004-11-16 Fuji Photo Film Co., Ltd. Coating method and apparatus
DE102004029565A1 (de) * 2004-06-18 2006-01-05 Voith Paper Patent Gmbh Rakelvorrichtung
US8312834B2 (en) * 2005-04-14 2012-11-20 Hamilton Sundstrand Corporation Apparatus for applying thin coating
DE102005029613A1 (de) * 2005-06-23 2007-01-04 Voith Patent Gmbh Vorrichtung zur Dosierung und/oder Egalisierung
DE102015121449A1 (de) * 2015-12-09 2017-06-14 Ba Assembly & Turnkey Systems Gmbh Verstreicheinheit
CN107321553A (zh) * 2017-06-23 2017-11-07 芜湖夏鑫新型材料科技有限公司 保护膜涂胶刮刀调节结构
CN108525955A (zh) * 2018-03-29 2018-09-14 芜湖夏鑫新型材料科技有限公司 保护膜稳定涂胶结构

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US2352337A (en) * 1941-12-03 1944-06-27 Cottrell C B & Sons Co Ink fountain for rotary intaglio presses
US2920557A (en) * 1957-03-21 1960-01-12 Westfalendruck G M B H & Co Ko Pressure control mechanism for doctor blades
US3255038A (en) * 1964-10-13 1966-06-07 Black Clawson Co Method for establishing the proper working position of a doctor blade
US3453137A (en) * 1965-10-05 1969-07-01 Black Clawson Co Paper machinery
DE1252706B (de) * 1966-03-05 1967-10-26 Philips Patentverwaltung GmbH, Hamburg Vorrichtung zum Einfärben gerasteter Flachen z B von Tiefdruckformen, mit trockenen Pulvern
US3688336A (en) * 1970-07-16 1972-09-05 Lodding Engineering Corp Extended-life doctoring apparatus
US3882817A (en) * 1974-01-11 1975-05-13 Black Clawson Co Doctor Blade Assembly
DE2822682A1 (de) * 1978-05-24 1979-11-29 Feldmuehle Ag Vorrichtung und verfahren zum kontinuierlichen egalisieren des striches beim beschichten von laufenden materialbahnen
DE2825907B2 (de) * 1978-06-13 1981-02-26 Jagenberg-Werke Ag, 4000 Duesseldorf Vorrichtung zum Aufbringen einer Beschichtung auf eine Materialbahn
DE3017274C2 (de) * 1980-05-06 1985-07-18 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum Streichen von Papierbahnen
DE3120716A1 (de) * 1981-06-03 1982-12-09 Osakeyhtiö Wärtsilä Ab, 00101 Helsinki "verfahren und vorrichtung zum unter-druck-zufuehren eines beschichtungsmaterials auf eine bewegte bahn"
DE3369080D1 (en) * 1982-11-23 1987-02-19 Jagenberg Ag Apparatus for coating a moving web of material
DE3313972A1 (de) * 1983-04-18 1984-10-18 Jagenberg AG, 4000 Düsseldorf Vorrichtung zum ein- und vorspannen eines elastischen streichmessers
SE447545B (sv) * 1985-06-12 1986-11-24 Inventing Ab Sett och anordning vid bladbestrykning av en lopande materialbana
US4780336A (en) * 1987-04-06 1988-10-25 Consolidated Papers, Inc. Doctor blade for paper coater

Also Published As

Publication number Publication date
BR8804540A (pt) 1989-04-11
ATE69980T1 (de) 1991-12-15
DE3866648D1 (de) 1992-01-16
US4899687A (en) 1990-02-13
DE3729621A1 (de) 1989-03-16
JPS6490062A (en) 1989-04-05
FI884050A7 (fi) 1989-03-05
FI884050A0 (fi) 1988-09-02
DE3729621C2 (enrdf_load_stackoverflow) 1991-09-05
EP0307618A1 (de) 1989-03-22

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