EP0369441B1 - Beschichtungsvorrichtung für Materialbahnen - Google Patents

Beschichtungsvorrichtung für Materialbahnen Download PDF

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Publication number
EP0369441B1
EP0369441B1 EP89121212A EP89121212A EP0369441B1 EP 0369441 B1 EP0369441 B1 EP 0369441B1 EP 89121212 A EP89121212 A EP 89121212A EP 89121212 A EP89121212 A EP 89121212A EP 0369441 B1 EP0369441 B1 EP 0369441B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
slot
roller
coating material
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.)
Expired - Lifetime
Application number
EP89121212A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0369441A3 (de
EP0369441A2 (de
Inventor
John Mladota
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.)
Bematec SA
Original Assignee
Bematec SA
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 Bematec SA filed Critical Bematec SA
Priority to AT89121212T priority Critical patent/ATE90596T1/de
Publication of EP0369441A2 publication Critical patent/EP0369441A2/de
Publication of EP0369441A3 publication Critical patent/EP0369441A3/de
Application granted granted Critical
Publication of EP0369441B1 publication Critical patent/EP0369441B1/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
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/18—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material only one side of the work coming into contact with the liquid or other fluent material

Definitions

  • the invention relates to a device for applying a thin layer of a coating material to a material web running over a counter-pressure roller, with a slit nozzle device which has a vertically standing nozzle box with an upper wide nozzle slot between an inlet and an outlet nozzle lip and a side-mounted on the nozzle box Has storage container for coating material (see DE-A-1 964 908).
  • the thickness of the applied layer is essentially determined by the distance between the running-off nozzle lip and the material web or the counter-pressure roller.
  • the invention has for its object to provide a coating device of the type described above, in which the layer thickness remains the same regardless of fluctuations in thickness of the material web and the current operating speed, without coating defects and edge thickening.
  • the object of the invention is achieved according to the invention with a device of the type described in the introduction in that the storage container is attached to the nozzle box and connected to it in such a way that the liquid level of the coating material in the storage container is the same as that in the nozzle box due to the effect of the communicating vessels, and that in the nozzle box under the nozzle slot a extending over the length of the nozzle box driven mass conveyor roller is provided, which is mounted eccentrically in a roller chamber on the way of the coating material, the level of the resting coating material below, preferably about 2 to 3 cm below the Exit of the nozzle slot is located.
  • a hydrodynamic liquid pressure against the counter-pressure roller or the material web to be coated is built up in the coating material, in particular by the rotation of the mass conveyor roller.
  • Sufficient coating material is supplied to the material web or counter-pressure roller to be coated at the lowest possible pressure.
  • the required layer thickness is set exclusively by the distance between the outgoing nozzle lip and the material web or the counter-pressure roller.
  • the running material web or counter-pressure roller takes coating material from the nozzle slot by adhesion and forms a pressure cushion between the running-off nozzle lip and the counter-pressure roller.
  • This pressure pad which naturally arises as a result of the speed and viscosity of the coating material, is maintained by the supply of coating material, but is not significantly influenced.
  • Outlet chamber extending over the length of the nozzle box and then a narrow feed slot to the wide nozzle slot are provided.
  • slides for selective nozzle slot covering are advantageously provided in the nozzle slot in the region of its two ends.
  • the coating gap formed from the running-off nozzle lip and the counter-pressure roller, should be a high-precision gap.
  • the counter-pressure roller is therefore advantageously a finely ground chromium-plated steel roller with a concentricity of about 2 to 3 ⁇ m, while the running-off nozzle lip is very straight with a linearity deviation of less than 1 ⁇ m over a length of 100 mm.
  • the incoming nozzle lip is expediently coated with an elastic material on the side facing the counter-pressure roller.
  • running-off nozzle lip and / or the incoming nozzle lip can advantageously be arranged interchangeably in the nozzle box.
  • a completely uniform coating of a material web running over the counter-pressure roller directly from the nozzle slot is only possible if the material web is very constant in thickness and practically without differences in thickness which influence the layer thickness. This is the case with, for example, calendered papers, various plastic films, biaxially oriented polypropylene films and the like.
  • An indirect coating will therefore have to be used for material webs with large thickness fluctuations, for example 7 to 9 ⁇ m in the web direction and short intervals. This applies particularly to thin coating materials, as these follow the unevenness of the material web.
  • the inertia of the mass has a balancing effect; the fluctuations in the coating are in any case smaller than the thickness fluctuations in the material web.
  • a pressure roller is advantageously provided which runs counter to or co-rotating with the counter-pressure roller, via which the material web is guided in contact with the counter-pressure roller, which is pre-coated by the slot nozzle device and operates as an application roller.
  • the contact pressure of the pressure roller on the counterpressure roller is expediently adjustable via adjustable stops.
  • the coating is first carried out very precisely on the counter-pressure roller.
  • the material web runs here over the pressure roller, where the pre-metered layer is taken over by the counter pressure roller in counter-rotation or idling on the material web.
  • the nozzle box is advantageously designed to be easily openable on a plane running through the vertical central longitudinal plane of the nozzle slot. This results in a significant simplification and ease of operation when cleaning the slot nozzle device when changing the coating material, in particular in connection with frequent batch changes.
  • the storage container and / or the nozzle box are expediently heatable.
  • FIG. 1 schematically shows a slot nozzle device 1 for applying a thin layer of coating material 2 directly onto a material web 4 running over a counter-pressure roller 3.
  • the slot nozzle device consists of a vertically standing nozzle box 5 and a storage container 6 for coating material 2 attached to the side of the nozzle box 5.
  • the nozzle box 5 has at its upper end a wide nozzle slot 7 between an incoming nozzle lip 8 and an outgoing nozzle lip 9.
  • the coating material 2 is washed directly onto the material web 4 through the wide nozzle slot 7.
  • the reservoir 6 is attached to the nozzle box 5 and connected to it in such a way that the liquid level of the coating material 2 in the reservoir 6 and in the nozzle box 5 is essentially the same due to the effect of the communicating vessels.
  • a driven mass conveyor roller 10 which extends over the length of the nozzle box 5.
  • the mass conveyor roller 10 is mounted eccentrically in a roller chamber 11 on the way of the coating material 2 from the nozzle box 5 to the nozzle slot 7.
  • the level of the resting coating material 2 is below, preferably 2 to 3 cm below the outlet of the nozzle slot 7.
  • the mass conveyor roller 10 is constructed in one or more sections and with two bearing rollers over one Tie rod held together. It can be pulled out axially as a whole from the nozzle box 5.
  • the rotation of the mass conveyor roller 10 builds up a hydrodynamic liquid pressure against the counter-pressure roller 3 or the material web 4 to be coated.
  • Sufficient coating material 2 is supplied to the material web 4 to be coated at the lowest possible pressure.
  • the required layer thickness is set exclusively by the distance between the running nozzle lip 9 and the material web 4 or the counter-pressure roller 3.
  • the running material web 4 takes coating material 2 from the nozzle slot 7 by adhesion and forms a pressure cushion between the running nozzle lip 9 and the counter-pressure roller 3. This pressure pad, which naturally arises as a result of the speed and the viscosity of the coating material 2, is maintained by the supply of coating material, but is not significantly influenced.
  • axially displaceable sliders 15 are provided in the nozzle slot 7 in the region of its two ends for selective nozzle slot covering, cf. Fig. 2 in particular. If these slides 15 are displaced to cover the nozzle slot in such a way that a narrower web of material 4 is coated, for example over half the length of the nozzle, the coating material builds up below the covered zones. However, since the mass conveyor roller 10 does not generate any appreciable pump pressure, the dynamic pressure remains very low and an edge build-up due to excess coating material 2 at the coating edges is completely eliminated.
  • the coating gap 16, formed from the running-off nozzle lip 9 and the counter-pressure roller 3, should be a high-precision gap.
  • the counter-pressure roller 3 is a finely ground chrome-plated steel roller with a concentricity of about 2 to 3 ⁇ m, while the running nozzle lip 9 is very straight with a linearity deviation of less than 1 ⁇ m over a length of 100 mm.
  • the incoming nozzle lip 8 can be coated with an elastic material 17 on the side facing the counter-pressure roller 3. This results in a very good seal of the coating material 2 in the area of the incoming nozzle lip 8.
  • the running-off nozzle lip 9 and / or the incoming nozzle lip 8 are advantageously designed such that that they can be arranged interchangeably in the nozzle box 5. These two nozzle lips 8 and 9 are even particularly advantageously interchangeably attached. If a very thin coating is now to be applied, either the direction of rotation of the counter-roller 3 can be reversed such that the incoming nozzle lip 8 coated with the elastic material 17 becomes the outgoing nozzle lip. The elastic material 17 can be pressed directly against the counter roller 3 and thus very precisely determines the thickness of the application of the very thin coating. On the other hand, the inlet nozzle lip 8 and the outlet nozzle lip 9 can also be exchanged for one another with the same direction of rotation of the counter-pressure roller 3 in order to achieve the same effect.
  • the counter-pressure roller 3 works here as an application roller, onto which the coating material 2 is applied in a pre-coating process in a metered manner through the slot nozzle device 1.
  • a pressure roller 18 is then provided here, via which the material web 4 is guided in contact with the metered, pre-coated counter-pressure roller 3. At the contact point, the coating material 2 is transferred uniformly onto the material web 4 by the counter-pressure roller 3.
  • the pressure roller 18 is driven in the opposite direction to the counter-pressure roller 3, but possibly also in the same direction.
  • the contact pressure of the pressure roller 18 against the counter-pressure roller 3 is advantageously adjustable via adjustable stops, not shown.
  • the nozzle box 5 is advantageously designed to be easily openable on a plane running through the vertical central longitudinal plane of the nozzle slot 7.
  • the part of the nozzle box 5 facing away from the storage container 6 can advantageously be pivoted away. This results in a significant simplification and ease of operation when cleaning the slot nozzle device 1 when changing the coating material 2, in particular in connection with frequent batch changes.
  • the storage container 6 and / or the nozzle box 5 can be designed to be heatable, which is particularly suitable when the application temperature of the coating material 2 is above room temperature.

Landscapes

  • Coating Apparatus (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Confectionery (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
EP89121212A 1988-11-18 1989-11-16 Beschichtungsvorrichtung für Materialbahnen Expired - Lifetime EP0369441B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89121212T ATE90596T1 (de) 1988-11-18 1989-11-16 Beschichtungsvorrichtung fuer materialbahnen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3839100 1988-11-18
DE3839100A DE3839100A1 (de) 1988-11-18 1988-11-18 Beschichtungsvorrichtung fuer materialbahnen

Publications (3)

Publication Number Publication Date
EP0369441A2 EP0369441A2 (de) 1990-05-23
EP0369441A3 EP0369441A3 (de) 1991-01-23
EP0369441B1 true EP0369441B1 (de) 1993-06-16

Family

ID=6367464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121212A Expired - Lifetime EP0369441B1 (de) 1988-11-18 1989-11-16 Beschichtungsvorrichtung für Materialbahnen

Country Status (10)

Country Link
US (1) US5033403A (enrdf_load_stackoverflow)
EP (1) EP0369441B1 (enrdf_load_stackoverflow)
JP (1) JPH0624665B2 (enrdf_load_stackoverflow)
AT (1) ATE90596T1 (enrdf_load_stackoverflow)
AU (1) AU623450B2 (enrdf_load_stackoverflow)
CA (1) CA2002844C (enrdf_load_stackoverflow)
DE (2) DE3839100A1 (enrdf_load_stackoverflow)
FI (1) FI105534B (enrdf_load_stackoverflow)
HK (1) HK8094A (enrdf_load_stackoverflow)
TW (1) TW202398B (enrdf_load_stackoverflow)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1241807B (it) 1990-10-17 1994-02-01 Perini Navi Spa Apparecchiatura per incollare il lembo finale di rotoli di materiale nastriforme
JPH08506062A (ja) * 1993-01-15 1996-07-02 ノードソン コーポレーション 印刷されたラベル材料に所望の保護仕上げを施す装置および方法
US5514416A (en) * 1994-02-08 1996-05-07 Minnesota Mining And Manufacturing Company Cross flow knife coater for applying a coating to a web
US5997645A (en) * 1995-05-24 1999-12-07 3M Innovative Properties Company Inserts for stripe coating
DE19716647A1 (de) * 1997-04-21 1998-10-22 Jagenberg Papiertech Gmbh Verfahren und Vorrichtung zum Auftragen einer Pigmentstreichfarbe auf eine Papier- oder Kartonbahn
DE29709673U1 (de) * 1997-06-04 1998-10-08 Eduard Küsters Maschinenfabrik GmbH & Co. KG, 47805 Krefeld Vorrichtung zum Auftragen eines fluiden Behandlungsmittels auf eine Bahn
DE29808981U1 (de) * 1998-05-18 1999-09-30 Eduard Küsters Maschinenfabrik GmbH & Co. KG, 47805 Krefeld Vorrichtung zum Auftragen eines Behandlungsmittels auf eine laufende Warenbahn
US7559990B2 (en) * 1998-05-19 2009-07-14 Eugene A Pankake Coating apparatus and method
US20090295098A1 (en) * 1999-05-18 2009-12-03 Pankake Eugene A Coating apparatus and method
US6372064B1 (en) * 1999-12-13 2002-04-16 C. G. Bretting Manufacturing Company, Inc. Tail sealer apparatus and method
JP4839576B2 (ja) * 2004-03-05 2011-12-21 Ｊｆｅスチール株式会社 帯状体へのコーティング方法
DE102006017365A1 (de) 2006-04-11 2007-10-18 Khs Ag Beleimungsvorrichtung
US8002927B2 (en) * 2006-06-23 2011-08-23 The Procter & Gamble Company Process for gluing the tail of a convolutely wound web material thereto
US7905194B2 (en) * 2006-06-23 2011-03-15 The Procter & Gamble Company Apparatus for gluing the tail of a convolutely wound web material thereto
US20070298224A1 (en) * 2006-06-23 2007-12-27 The Procter & Gamble Company Convolutely wound web material having the tail adhered thereto
TWI456105B (zh) * 2011-04-15 2014-10-11 Ruentex Eng & Constr Co Ltd 建築物氣體交換結構及方法

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA459538A (en) * 1949-09-06 Adolph Roehm William Web coating apparatus and method
DE804554C (de) * 1947-12-01 1951-04-26 Basf Ag Verfahren zur Herstellung von duennen Schichten aus fluessigen Stoffen
US2940418A (en) * 1959-03-27 1960-06-14 Black Clawson Co Paper machinery
US3424126A (en) * 1963-01-25 1969-01-28 Beloit Corp Air-knife coater
GB1072951A (en) * 1964-03-23 1967-06-21 Gevaert Photo Prod Nv Method and apparatus for coating liquid compositions onto webs of paper and other material
GB1194875A (en) * 1966-07-01 1970-06-17 Fuji Photo Film Co Ltd A Method of Applying a Coating Liquid
SE360408B (enrdf_load_stackoverflow) * 1968-12-30 1973-09-24 Waertsilae Oy Ab
US3645773A (en) * 1969-02-10 1972-02-29 Agfa Gevaert Ag Process for coating substrates in strip-form with photographic emulsion
GB1282265A (en) * 1970-01-19 1972-07-19 Gaf Corp Production of liquid films
IT1144645B (it) * 1981-09-01 1986-10-29 Rotomec Costr Mecc Dispositivo per l applicazione di sostanze viscose su un materiale in nastro in movimento
US4396648A (en) * 1982-02-08 1983-08-02 Consolidated Papers, Inc. Paper coating apparatus and method
AT374379B (de) * 1982-03-29 1984-04-10 Zimmer Johannes Vorrichtung zum gleichmaessigen auftragen bestimmbarer fluessigkeitsmengen
US4491082A (en) * 1982-04-01 1985-01-01 Ppg Industries, Inc. Cylindrical sleeve applicator for use in manufacturing chemically treated filaments
FR2540406B1 (fr) * 1983-02-04 1986-10-31 Centre Tech Ind Papier Dispositif d'enduction d'une feuille ou d'une bande en deplacement continu
AT393464B (de) * 1983-05-25 1991-10-25 Johannes Zimmer Vorrichtung zum auftragen von aufgeschaeumten oder hochviskosen medien
JPS60143866A (ja) * 1983-12-29 1985-07-30 Konishiroku Photo Ind Co Ltd 塗布方法及びその装置
DE3406099A1 (de) * 1984-02-20 1985-08-22 John Lausanne Mladota Beschichtungsvorrichtung fuer materialbahnen
DE3506135C2 (de) * 1985-02-22 1987-04-23 ASEA GmbH, 5340 Bad Honnef Auftragevorrichtung zum Auftragen einer zähen Flüssigkeit
US4667879A (en) * 1985-08-21 1987-05-26 Nordson Corporation Thermoplastic material applicator having an adjustable slot nozzle
JPH067944B2 (ja) * 1985-10-18 1994-02-02 富士写真フイルム株式会社 塗布方法
DE8804351U1 (de) * 1988-03-31 1988-05-11 Ehret, Bernhard, 7800 Freiburg Düse zum Auftragen von Leimen höherer Viskosität
US4867097A (en) * 1988-06-15 1989-09-19 Union Camp Corporation End dam
US4889072A (en) * 1989-04-18 1989-12-26 Worldwide Converting Machinery Coating apparatus

Also Published As

Publication number Publication date
FI895402A0 (fi) 1989-11-13
JPH0624665B2 (ja) 1994-04-06
EP0369441A3 (de) 1991-01-23
DE3839100A1 (de) 1990-05-23
JPH02245261A (ja) 1990-10-01
ATE90596T1 (de) 1993-07-15
AU4465189A (en) 1990-05-24
DE58904724D1 (de) 1993-07-22
CA2002844A1 (en) 1990-05-18
CA2002844C (en) 2000-10-10
FI105534B (fi) 2000-09-15
TW202398B (enrdf_load_stackoverflow) 1993-03-21
EP0369441A2 (de) 1990-05-23
AU623450B2 (en) 1992-05-14
US5033403A (en) 1991-07-23
HK8094A (en) 1994-02-04

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