EP0152921A2 - Coating device for sheetlike materials - Google Patents
Coating device for sheetlike materials Download PDFInfo
- Publication number
- EP0152921A2 EP0152921A2 EP85101631A EP85101631A EP0152921A2 EP 0152921 A2 EP0152921 A2 EP 0152921A2 EP 85101631 A EP85101631 A EP 85101631A EP 85101631 A EP85101631 A EP 85101631A EP 0152921 A2 EP0152921 A2 EP 0152921A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- slot
- nozzle
- coating
- spacers
- 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.)
- Granted
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 53
- 239000011248 coating agent Substances 0.000 title claims abstract description 52
- 239000000463 material Substances 0.000 title claims abstract description 31
- 125000006850 spacer group Chemical group 0.000 claims abstract description 18
- 230000004323 axial length Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000005026 oriented polypropylene Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Images
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
- B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
- B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
-
- 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 slot nozzle device having a nozzle slot.
- a device for example from DE-C-31 00 101.
- the invention has for its object to provide a coating device of the type described above, with which an adequate, flawless and uniform supply of coating material over the entire desired coating width is ensured to the nozzle slot. At the same time, both a simple adjustment of the coating device to different coating widths as well as a quick and easy cleaning of the slot nozzle arrangement when converting to different coating materials are ensured.
- This object is achieved in that the coating material is fed from a storage container through a feed channel running across the coating width to the nozzle slot of the slot nozzle device, and in that in the feed channel of the slot nozzle device there are a plurality of pump sections with two pump gears each, extending over the coating width, with the gear pump arrangement Pump gears bearing spacers between the pump sections is arranged easily removable.
- Such an arrangement makes it possible to provide a sufficient amount of coating material uniformly distributed over the coating width at the nozzle slot, the number of pump sections being selected in accordance with the desired coating width and being able to be changed in a simple manner.
- the pump gearwheels with axle stubs on both sides are advantageously mounted in the spacers and the driven pump gearwheels are connected to one another in a drive-proof manner in the area of the spacers by way of axially engaging axle connecting pieces.
- the driven pump gearwheels can thus be driven by a single drive motor.
- the spacers are expediently designed as coal stores.
- the slot nozzle device is advantageously designed such that it can be swung open with respect to a plane running through the central longitudinal plane between the pump gear wheels.
- both the number of pump sections can be adapted to the required coating width in an extremely simple and user-friendly manner, and a quick and thorough cleaning of the slot nozzle arrangement when changing coating material can be carried out.
- the latter is particularly important if, due to the driving of small batches, it has to be converted relatively frequently.
- the axial length of the pump gears is advantageously about twice the axial length of the spacers. This results in a completely uniform distribution of the coating material along the nozzle slot.
- the pump gearwheels are advantageously driven at about 10 to 12 rpm in current and customary coating processes.
- heating or cooling channels extending over the coating width can advantageously be provided in the area of the feed channel and the gear pump arrangement, which ensure good heat transfer within the slot nozzle device.
- the walls of the storage container are expediently heated, in particular for the processing of coating hotmelts.
- a rod-shaped circular slide valve closing the feed channel arranged arranged, the locking rod of the circular slide closure is suitably mounted under the feed channel in the vicinity of the nozzle lips.
- the device according to the invention for applying a thin layer of a coating material shown in FIGS. 1 and 2 in a preferred embodiment has a counter-pressure roller 1, which is covered with rubber or hard rubber. A material web 2 to be coated is guided over the counter-pressure roller 1 in the direction of arrow A.
- a slot nozzle device 3 On one side of the counter-pressure roller 1 there is a slot nozzle device 3 with a fixed inlet and outlet nozzle lip of the nozzle slot-4.
- the incoming nozzle lip 5 of the nozzle slot 4 is fixed, the outgoing nozzle lip 6 of the nozzle slot 4 is designed as a rotatable doctor rod 6.
- Material webs to be coated are, for example, paper webs, plastic films, metal foils, fabric webs and combinations of such material webs.
- the material web can be an aluminum foil with a thickness of 0.008 mm, 0.012 mm, 0.02 mm and up to 0.12 mm.
- smooth, coated or creped papers from 40 to 120 g / m 2 are possible
- plastic films polyethylene films from 40 to 120 mu thick, biaxially oriented, so-called oriented polypropylene films from 30 to 120 mu thick and polyester films in the same thickness range.
- hard PVC films and monomeric as well as polymer-softened PVC films can be processed as material webs, and, for example, carpet laying tapes and dressing materials as fabric webs.
- Coating materials include paraffins and microcrystalline waxes with processing temperatures between 75 ° C and 100 ° C with application quantities between 4 and 40 g / m 2 .
- Coating hotmelts consisting of ethyl vinyl acetate copolymers, mixed with paraffin and resins, are also suitable at processing temperatures between 140 ° C and 190 ° C for the surface finishing of packaging material.
- Melt pressure sensitive adhesive used have processing temperatures between 140 ° C and 190 ° C in order amounts from 12 and 4 0 g / m 2, while thermoset adhesives are processed at temperatures of 70 ° C to 80 0 C and laydown amount of from 40 g / m 2.
- Polyurethane glue consisting of two components, is mixed shortly before coating.
- Further coating materials are aqueous emulsions and dispersions as a PVDC coating at room temperature.
- Acrylate adhesive as aqueous dispersions with coating also at room temperature various starch adhesives are processed at temperatures from 70 ° C to 90 ° C, adhesives and coating compounds that are dissolved in organic solvents and processed at room temperature and finally cold glue PVC based on polyvinyl alcohol.
- Coating material 7 is located in a storage container 8, which can be heated by heating pipes 9. Through a feed channel 10 running over the greatest coating width, the coating material 7 is fed under the force of gravity to a gear pump arrangement 12 also running over the coating width, and from there under the pumping action of the gear pump arrangement 12 through a further feed channel 11 running over the greatest coating width is fed to the nozzle slot 4.
- the gear pump arrangement 12 has a plurality of pump sections 13, each with a driven pump gear 14 and a rotating pump gear 15. Spacers 16, which support the pump gear wheels 13, 14, are arranged between the pump sections 13. Both the pump sections 13 and the spacers 16 are arranged in the slot nozzle device 3 so that they can be easily removed in order to convert and clean the slot nozzle arrangement. An adaptation to different coating widths takes place by inserting a corresponding number of pump sections 13 and spacers 16 into the slot nozzle arrangement.
- the pump gears 14, 15 are mounted in the spacers 16 via stub axles 17 on both sides. Furthermore, the driven pump gearwheels 14 are connected to one another in a drive-proof manner in the region of the spacers 16 by way of axle connecting pieces 18 which engage in them positively, the An driven all the pump sections 13 together from the side 19 of the gear pump assembly 12, preferably at about 10 to 12 rpm.
- the spacers 16 are preferably designed as coal bearings.
- the slot nozzle device 3 is designed such that it can be folded open with respect to a plane running through the central longitudinal plane 20 between the pump gear wheels 14, 15, as a result of which the conversion and cleaning of the slot nozzle device 3 can be carried out in a particularly simple and user-friendly manner.
- the axial length of the pump gearwheels 14, 15 is advantageously approximately twice the axial length of the spacers 16, which in any case ensures a uniform distribution of the coating material 7 along the length of the nozzle slot 4.
- heating or cooling ducts 21 can expediently be provided over the coating width in order to ensure good heat transfer.
- a closing rod 22 of a rod-shaped circular slide valve closing the feed channel 11 is arranged under the feed channel 11 in the vicinity of the nozzle lips 5, 6.
- This circular slide valve closure is not only advantageous when retrofitting and cleaning the slot nozzle device 3, but also ensures that a coating without coating can be applied with the slot nozzle device described.
Landscapes
- Coating Apparatus (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Fats And Perfumes (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Soil Working Implements (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Seal Device For Vehicle (AREA)
- Glass Compositions (AREA)
Abstract
Eine Vorrichtung zum Aufbringen einer dünnen Schicht eines Beschichtungsmaterials (7) auf eine über eine Gegendruckwalze (1) laufende Materialbahn (2) weist eine Schlitzdüseneinrichtung (3) mit einem Düsenschlitz (4) auf. Um eine gleichmässige und ausreichende Zufuhr von Beschichtungsmaterial (7) über die Länge des Düsenschlitzes (4) sicherzustellen, ist das Beschichtungsmaterial (7) von einem Vorratsbehälter (8) durch einen über die Beschichtungsbreite verlaufenden Zufuhrkanal (10, 11) dem Düsenschlitz (4) der Schlitzdüseneinrichtung (3) zugeführt und ist in dem Zufuhrkanal (10, 11) der Schlitzdüseneinrichtung (3) eine mehrere Pumpenabschnitte (13) mit je zwei Pumpenzahnrädern (14, 15) aufweisende, über die Beschichtungsbreite verlaufende Zahnradpumpenanordnung (12) mit die Pumpenzahnräder (14, 15) lagernden Abstandsstücken zwischen den Pumpenabschnitten (13) leicht entfernbar angeordnet.A device for applying a thin layer of a coating material (7) to a material web (2) running over a counterpressure roller (1) has a slot nozzle device (3) with a nozzle slot (4). In order to ensure a uniform and sufficient supply of coating material (7) over the length of the nozzle slot (4), the coating material (7) is fed from a storage container (8) through a supply channel (10, 11) extending over the coating width to the nozzle slot (4). fed to the slot nozzle device (3) and in the feed channel (10, 11) of the slot nozzle device (3) is a plurality of pump sections (13) each with two pump gear wheels (14, 15) and extending across the coating width, gear pump arrangement (12) with the pump gear wheels ( 14, 15) bearing spacers between the pump sections (13) arranged to be easily removable.
Description
Die Erfindung bezieht sich auf eine Vorrichtung zum Aufbringen einer dünnen Schicht eines Beschichtungsmaterials auf eine über eine Gegendruckwalze laufende Materialbahn mit einer einen Düsenschlitz aufweisenden Schlitzdüseneinrichtung. Eine derartige Vorrichtung ist beispielsweise durch die DE-C- 31 00 101 bekannt geworden.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 slot nozzle device having a nozzle slot. Such a device is known for example from DE-C-31 00 101.
Bei derartigen Beschichtungsvorrichtungen kommt es darauf an, daß das Beschichtungsmaterial über große Breiten von mehreren Metern gleichmäßig über die Breite aufgetragen wird und dementsprechend für eine gleichmäßige und ausreichende Zufuhr von Beschichtungsmaterial entlang des Düsenschlitzes zu sorgen ist.In such coating devices, it is important that the coating material is applied uniformly across the width over large widths of several meters and, accordingly, that a uniform and sufficient supply of coating material is to be provided along the nozzle slot.
Der Erfindung liegt die Aufgabe zugrunde, eine Beschichtungsvorrichtung der oben beschriebenen Art zu schaffen, mit der eine ausreichende, einwandfreie und über die gesamte gewünschte Beschichtungsbreite gleichmäßige Zufuhr von Beschichtungsmaterial zu dem Düsenschlitz gewährleistet ist. Gleichzeitig soll sowohl eine einfache Anpassung der Beschichtungsvorrichtung an unterschiedliche Beschichtungsbreiten als auch ein schnelles und einfaches Reinigen der Schlitzdüsenanordnung beim Umrüsten auf unterschiedliche Beschichtungsmaterialien sichergestellt werden.The invention has for its object to provide a coating device of the type described above, with which an adequate, flawless and uniform supply of coating material over the entire desired coating width is ensured to the nozzle slot. At the same time, both a simple adjustment of the coating device to different coating widths as well as a quick and easy cleaning of the slot nozzle arrangement when converting to different coating materials are ensured.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Beschichtungsmaterial von einem Vorratsbehälter durch einen über die Beschichtungsbreite verlaufenden Zufuhrkanal dem Düsenschlitz der Schlitzdüseneinrichtung zugeführt ist, und daß in dem Zufuhrkanal der Schlitzdüseneinrichtung eine mehrere Pumpenabschnitte mit je zwei Pumpenzahnrädern aufweisende, über die Beschichtungsbreite verlaufende Zahnradpumpenanordnung mit die Pumpenzahnräder lagernden Abstandsstücken zwischen den Pumpenabschnitten leicht entfernbar angeordnet ist.This object is achieved in that the coating material is fed from a storage container through a feed channel running across the coating width to the nozzle slot of the slot nozzle device, and in that in the feed channel of the slot nozzle device there are a plurality of pump sections with two pump gears each, extending over the coating width, with the gear pump arrangement Pump gears bearing spacers between the pump sections is arranged easily removable.
Eine derartige Anordnung ermöglicht es, an dem Düsenschlitz eine gleichmäßig über die Beschichtungsbreite verteilte ausreichende Menge an Beschichtungsmaterial zur Verfügung zu stellen, wobei die Anzahl der Pumpenabschnitte entsprechend der gewünschten Beschichtungsbreite gewählt wird und auf einfache Weise verändert werden kann.Such an arrangement makes it possible to provide a sufficient amount of coating material uniformly distributed over the coating width at the nozzle slot, the number of pump sections being selected in accordance with the desired coating width and being able to be changed in a simple manner.
Vorteilhaft sind die Pumpenzahnräder mit beidseitigen Achsstummeln in den Abstandsstücken gelagert und die angetriebenen Pumpenzahnräder über formschlüssig in sie eingreifende Achsverbindungsstücke im Bereich der Abstandsstücke miteinander antriebsfest verbunden. Der Antrieb der angetriebenen Pumpenzahnräder kann damit über einen einzigen Antriebsmotor erfolgen.The pump gearwheels with axle stubs on both sides are advantageously mounted in the spacers and the driven pump gearwheels are connected to one another in a drive-proof manner in the area of the spacers by way of axially engaging axle connecting pieces. The driven pump gearwheels can thus be driven by a single drive motor.
Die Abstandsstücke sind zweckmäßig als Kohlelager ausgebildet.The spacers are expediently designed as coal stores.
Vorteilhaft ist die Schlitzdüseneinrichtung bezüglich einer durch die Mittellängsebene zwischen den Pumpenzahnrädern verlaufenden Ebene aufklappbar ausgebildet. Mit dieser Ausbildung läßt sich sowohl die Anzahl der Pumpenabschnitte auf äußerst einfache und betriebsfreundliche Weise an die geforderte Beschichtungsbreite anpassen als auch eine schnelle und gründliche Reinigung der Schlitzdüsenanordnung bei der Änderung von Beschichtungsmaterial vornehmen. Letzteres ist besonders dann von Bedeutung, wenn infolge des Fahrens kleiner Chargen relativ häufig umgerüstet werden muß.The slot nozzle device is advantageously designed such that it can be swung open with respect to a plane running through the central longitudinal plane between the pump gear wheels. With this design, both the number of pump sections can be adapted to the required coating width in an extremely simple and user-friendly manner, and a quick and thorough cleaning of the slot nozzle arrangement when changing coating material can be carried out. The latter is particularly important if, due to the driving of small batches, it has to be converted relatively frequently.
Die axiale Länge der Pumpenzahnräder beträgt zweckmäßig etwa das zweifache der axialen Länge der Abstandsstücke. Hiermit ergibt sich eine völlig gleichmäßige Verteilung des Beschichtungsmaterials entlang des Düsenschlitzes.The axial length of the pump gears is advantageously about twice the axial length of the spacers. This results in a completely uniform distribution of the coating material along the nozzle slot.
Die Pumpenzahnräder werden bei gängigen und üblichen Beschichtungsvorgängen vorteilhaft mit etwa 10 bis 12 U/min angetrieben.The pump gearwheels are advantageously driven at about 10 to 12 rpm in current and customary coating processes.
Weiter können bei der erfindungsgemäßen Schlitzdüsenanordnung vorteilhaft im Bereich des Zufuhrkanals und der Zahnradpumpenanordnung über die Beschichtungsbreite verlaufende Heiz- oder Kühlkanäle vorgesehen sein, die einen guten Wärmeübergang innerhalb der Schlitzdüseneinrichtung sicherstellen.Furthermore, in the slot nozzle arrangement according to the invention, heating or cooling channels extending over the coating width can advantageously be provided in the area of the feed channel and the gear pump arrangement, which ensure good heat transfer within the slot nozzle device.
Die Wandungen des Vorratsbehälters sind insbesondere für die Verarbeitung von Beschichtungshotmelts zweckmäßig beheizt.The walls of the storage container are expediently heated, in particular for the processing of coating hotmelts.
Weiter ist vorteilhaft zwischen der Zahnradpumpenanordnung und den Düsenlippen der Schlitzdüseneinrichtung ein den Zufuhrkanal verschließender, stangenförmiger Rundschieberverschluß angeordnet, wobei die Schließstange des Rundschieberverschlusses zweckmäßig unter dem Zufuhrkanal in der Nähe der Düsenlippen gelagert ist. Hiermit ergibt sich nicht nur eine erheblich gesteigerte Bedienungsfreundlichkeit beim Umrüsten und Reinigen der Schlitzdüseneinrichtung, sondern auch die Möglichkeit einer verbesserten ansatzfreien Beschichtung der Materialbahn.It is also advantageous between the gear pump arrangement and the nozzle lips of the slot nozzle device, a rod-shaped circular slide valve closing the feed channel arranged arranged, the locking rod of the circular slide closure is suitably mounted under the feed channel in the vicinity of the nozzle lips. This not only results in a considerably increased user friendliness when converting and cleaning the slot nozzle device, but also the possibility of an improved, seamless coating of the material web.
Die Erfindung ist im folgenden an einem Ausführungsbeispiel anhand der Zeichnungen näher erläutert. In den Zeichnungen zeigt
- Fig. 1 eine Seitenschnittansicht der Schlitzdüseneinrichtung einer Beschichtungsvorrichtung gemäß der Erfindung, und
- Fig. 2 eine Längsschnittansicht entlang der Linie-II-II durch die Pumpenanordnung der Schlitzdüseneinrichtung in Fig. 1.
- 1 is a side sectional view of the slot nozzle device of a coating device according to the invention, and
- FIG. 2 shows a longitudinal sectional view along the line II-II through the pump arrangement of the slot nozzle device in FIG. 1.
Die in den Fig. 1 und 2 an einem bevorzugten Ausführungsbeispiel dargestellte erfindungsgemäße Vorrichtung zum Aufbringen einer dünnen Schicht eines Beschichtungsmaterials weist eine Gegendruckwalze 1 auf, welche mit Kautschuk oder Hartgummi bezogen ist. Über die Gegendruckwalze 1 wird in Richtung des Pfeiles A eine zu beschichtende Materialbahn 2 geführt.The device according to the invention for applying a thin layer of a coating material shown in FIGS. 1 and 2 in a preferred embodiment has a counter-pressure roller 1, which is covered with rubber or hard rubber. A material web 2 to be coated is guided over the counter-pressure roller 1 in the direction of arrow A.
Auf einer Seite der Gegendruckwalze 1 ist eine Schlitzdüseneinrichtung 3 mit feststehender einlaufender und ablaufender Düsenlippe des Düsenschlitzes-4 vorgesehen. Die einlaufende Düsenlippe 5 des Düsenschlitzes 4 ist feststehend, die ablaufende Düsenlippe 6 des Düsenschlitzes 4 als drehbarer Rakelstab 6 ausgebildet.On one side of the counter-pressure roller 1 there is a slot nozzle device 3 with a fixed inlet and outlet nozzle lip of the nozzle slot-4. The
Zu beschichtende Materialbahnen sind beispielsweise Papierbahnen, Kunststoffolien, Metallfolien, Gewebebahnen sowie Kombinationen derartiger Materialbahnen. So kann die Materialbahn eine Aluminiumfolie mit 0,008 mm, 0,012 mm, 0,02 mm und bis zu 0,12 mm Dicke sein. Als Papierbahn kommen glatte, gestrichene oder gekreppte Papiere von 40 bis 120 g/m2 in Frage, als Kunststoffolien Polyäthylenfolien von 40 bis 120 mu Dicke, biaxial gereckte, sogenannte orientierte Polypropylenfolien von 30 bis 120 mu Dicke und Polyesterfolien im gleichen Dickenbereich. Weiter können als Materialbahnen Hart-PVC-Folien und monomer sowie polymer weichgemachte PVC-Folien verarbeitet werden, und als Gewebebahnen beispielsweise Teppichverlegebänder und Verbandmaterialien.Material webs to be coated are, for example, paper webs, plastic films, metal foils, fabric webs and combinations of such material webs. The material web can be an aluminum foil with a thickness of 0.008 mm, 0.012 mm, 0.02 mm and up to 0.12 mm. As paper web, smooth, coated or creped papers from 40 to 120 g / m 2 are possible , as plastic films, polyethylene films from 40 to 120 mu thick, biaxially oriented, so-called oriented polypropylene films from 30 to 120 mu thick and polyester films in the same thickness range. Furthermore, hard PVC films and monomeric as well as polymer-softened PVC films can be processed as material webs, and, for example, carpet laying tapes and dressing materials as fabric webs.
Beschichtungsmaterialien sind unter anderem Paraffine und mikrokristalline Wachse mit Verarbeitungstemperaturen zwischen 75°C und 100°C bei Auftragsmengen zwischen 4 und 40 g /m2. Weiter kommen in Frage Beschichtungshotmelts, bestehend aus Äthylvinylacetat-Copolymeren, gemischt mit Paraffin und Harzen, bei Verarbeitungstemperaturen zwischen 140°C und 190°C für die Oberflächenveredelung von Verpackungsmaterial. Verwendete Schmelzhaftkleber haben Verarbeitungstemperaturen zwischen 140°C und 190°C bei Auftragsmengen zwischen 12 und 40 g/m2 , während Thermoset-Kleber bei Temperaturen von 70°C bis 800C und Auftragsmenge ab 40 g/m2 verarbeitet werden. Polyurethankleber, bestehend aus zwei Komponenten, werden kurz vor der Beschichtung gemischt.Coating materials include paraffins and microcrystalline waxes with processing temperatures between 75 ° C and 100 ° C with application quantities between 4 and 40 g / m 2 . Coating hotmelts, consisting of ethyl vinyl acetate copolymers, mixed with paraffin and resins, are also suitable at processing temperatures between 140 ° C and 190 ° C for the surface finishing of packaging material. Melt pressure sensitive adhesive used have processing temperatures between 140 ° C and 190 ° C in order amounts from 12 and 4 0 g / m 2, while thermoset adhesives are processed at temperatures of 70 ° C to 80 0 C and laydown amount of from 40 g / m 2. Polyurethane glue, consisting of two components, is mixed shortly before coating.
Weitere Beschichtungsmaterialien sind wässrige Emulsionen und Dispersionen als PVDC-Beschichtung bei Raumtemperatur. Acrylatkleber als wässrige Dispersionen mit Beschichtung ebenfalls bei Raumtemperatur, verschiedene Stärkekleber, die bei Temperaturen von 70°C bis 90°C verarbeitet werden, Klebstoffe und Beschichtungsmassen, die in organischen Lösungsmitteln gelöst sind und bei Raumtemperatur verarbeitet werden und schließlich-Kaltleime PVC auf der Basis von Polyvinylalkohol.Further coating materials are aqueous emulsions and dispersions as a PVDC coating at room temperature. Acrylate adhesive as aqueous dispersions with coating also at room temperature, various starch adhesives are processed at temperatures from 70 ° C to 90 ° C, adhesives and coating compounds that are dissolved in organic solvents and processed at room temperature and finally cold glue PVC based on polyvinyl alcohol.
Beschichtungsmaterial 7 befindet sich in einem Vorratsbehälter 8, der durch Heizrohre 9 beheizt werden kann. Durch einen über die größte Beschichtungsbreite verlaufenden Zufuhrkanal 10 wird das Beschichtungsmaterial 7 unter Schwerkraftwirkung einer ebenfalls über die Beschichtungsbreite verlaufenden Zahnradpumpenanordnung 12 zugeführt und von dort unter der Pumpwirkung der Zahnradpumpenanordnung 12 durch einen über die größte Beschichtungsbreite verlaufenden weiteren Zufuhrkanal 11 dem Düsenschlitz 4 zugeführt.Coating material 7 is located in a storage container 8, which can be heated by
Die Zahnradpumpenanordnung 12 weist mehrere Pumpenabschnitte 13 mit je einem angetriebenen Pumpenzahnrad 14 und mitlaufenden Pumpenzahnrad 15 auf. Zwischen den Pumpenabschnitten 13 sind Abstandsstücke 16, die die Pumpenzahnräder 13, 14 lagern, angeordnet. Sowohl die Pumpenabschnitte 13 als auch die Abstandsstücke 16 sind zum Umrüsten und Reinigen der Schlitzdüsenanordnung leicht entfernbar in der Schlitzdüseneinrichtung 3 angeordnet. Eine Anpassung an unterschiedliche Beschichtungsbreiten erfolgt durch Einsetzen einer entsprechenden Anzahl von Pumpenabschnitten 13 und Abstandsstükken 16 in die Schlitzdüsenanordnung.The gear pump arrangement 12 has a plurality of
Die Pumpenzahnräder 14, 15 sind über beidseitige Achsstummel 17 in den Abstandsstücken 16 gelagert. Weiter sind die angetriebenen Pumpenzahnräder 14 über formschlüssig in sie eingreifende Achsverbindungsstücke 18 im Bereich der Abstandsstücke 16 miteinander antriebsfest verbunden, wobei der Antrieb sämtlicher Pumpenabschnitte 13 gemeinsam von der Seite 19 der Zahnradpumpenanordnung 12 vorzugsweise mit etwa 10 bis 12 U/min erfolgen kann. Die Abstandsstücke 16 sind vorzugsweise als Kohlelager ausgebildet.The
Die Schlitzdüseneinrichtung 3 ist bezüglich einer durch die Mittellängsebene 20 zwischen den Pumpenzahnrädern 14, 15 verlaufenden Ebene aufklappbar ausgebildet, wodurch das Umrüsten und Reinigen der Schlitzdüseneinrichtung 3 besonders einfach und betriebsfreundlich durchzuführen ist.The slot nozzle device 3 is designed such that it can be folded open with respect to a plane running through the central
Die axiale Länge der Pumpenzahnräder 14, 15 beträgt vorteilhaft etwa das zweifache der axialen Länge der Abstandsstücke 16, wodurch in jedem Falle eine gleichmäßige Verteilung des Beschichtungsmaterials 7 entlang der Länge des Düsenschlitzes 4 gewährleistet ist.The axial length of the
Im Bereich des Zufuhrkanals 10, 11 und der Zahnradpumpenanordnung 12 können zweckmäßig über die Beschichtungsbreite verlaufende Heiz- oder Kühlkanäle 21 vorgesehen sein, um einen guten Wärmeübergang zu gewährleisten.In the area of the
Zwischen der Zahnradpumpenanordnung 12 und den Düsenlippen 5, 6 ist unter dem Zufuhrkanal 11 in der Nähe der Düsenlippen 5, 6 eine Schließstange 22 eines den Zufuhrkanal 11 verschließenden, stangenförmigen Rundschieberverschlusses angeordnet. Dieser Rundschieberverschluß ist nicht nur vorteilhaft bei der Umrüstung und Reinigung der Schlitzdüseneinrichtung 3, sondern stellt auch sicher, daß mit der beschriebenen Schlitzdüseneinrichtung eine ansatzfreie Beschichtung aufgebracht werden kann.Between the gear pump arrangement 12 and the
Claims (10)
dadurch gekennzeichnet, daß die Schließstange (22) des Rundschieberverschlusses unter dem Zufuhrkanal (10) in der Nähe der Düsenlippen (5, 6) gelagert ist.10. The device according to claim 9,
characterized in that the closing rod (22) of the circular slide closure is mounted under the feed channel (10) in the vicinity of the nozzle lips (5, 6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT85101631T ATE46633T1 (en) | 1984-02-20 | 1985-02-14 | COATING DEVICE FOR MATERIAL WEBS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843406099 DE3406099A1 (en) | 1984-02-20 | 1984-02-20 | COATING DEVICE FOR MATERIAL RAILS |
| DE3406099 | 1984-02-20 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0152921A2 true EP0152921A2 (en) | 1985-08-28 |
| EP0152921A3 EP0152921A3 (en) | 1986-12-10 |
| EP0152921B1 EP0152921B1 (en) | 1989-09-27 |
Family
ID=6228282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85101631A Expired EP0152921B1 (en) | 1984-02-20 | 1985-02-14 | Coating device for sheetlike materials |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4765272A (en) |
| EP (1) | EP0152921B1 (en) |
| AT (1) | ATE46633T1 (en) |
| AU (1) | AU568423B2 (en) |
| DE (2) | DE3406099A1 (en) |
| FI (1) | FI81733C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0369441A3 (en) * | 1988-11-18 | 1991-01-23 | Bematec Sa | Coating device for webs |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4121792A1 (en) * | 1991-07-02 | 1993-01-07 | Kolbus Gmbh & Co Kg | Book back gluing nozzle system - has self adjusting pressure relief discharge at higher than application pressure |
| US5829647A (en) * | 1996-07-23 | 1998-11-03 | Nordson Corporation | Metering gearhead dispensing apparatus having selectively positionable gear pumps |
| DE19722117C2 (en) * | 1997-05-27 | 2000-09-07 | Bematec S A | Coating of porous supports |
| DE19755625A1 (en) * | 1997-12-15 | 1999-07-01 | Jagenberg Papiertech Gmbh | Slot nozzle for coating material webs, in particular paper or cardboard webs with pigment coating ink |
| DE19858653A1 (en) * | 1998-12-18 | 2000-06-21 | Voith Sulzer Papiertech Patent | Coating a moving web surface uses a controlled feed pump capacity to set the amount of medium delivered to the applicator to determine the mean coating weight with little or no surplus residue |
| DE19905318A1 (en) * | 1999-02-09 | 2000-08-10 | Voith Sulzer Papiertech Patent | Liquid or paste application device for running backing, in which liquid or paste is applied indirectly via a transfer roll |
| ITBO20000742A1 (en) * | 2000-12-22 | 2002-06-22 | Gd Spa | METHOD, GROUP AND ARTICULATION RUBBER UNIT |
| SG11201401666QA (en) | 2011-10-19 | 2014-10-30 | 3M Innovative Properties Co | Articles with thin melt coatings and methods for making same |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1929877A (en) * | 1928-08-03 | 1933-10-10 | Harold Wade | Apparatus for applying coatings to surfaces particularly to the surfaces of flexiblestrip material |
| US2474254A (en) * | 1946-11-18 | 1949-06-28 | Leroy A Kauffman | Machine for impregnating material with liquids |
| US2988120A (en) * | 1957-10-31 | 1961-06-13 | Crandell Corp | Apparatus for manufacturing a composite wood product |
| US3479989A (en) * | 1967-11-28 | 1969-11-25 | Eastman Kodak Co | Extrusion coating apparatus |
| CH489807A (en) * | 1969-04-16 | 1970-04-30 | Siemens Ag Albis | Method and device for checking the connections in electrical wiring for missing and redundant connections |
| US3642181A (en) * | 1969-06-05 | 1972-02-15 | Valco Inc | Vertical adhesive applicator head |
| US3906757A (en) * | 1971-06-14 | 1975-09-23 | Unitika Ltd | Apparatus for continuous dyeing of yarns |
| US4333420A (en) * | 1980-07-21 | 1982-06-08 | Petri Nello J | Glue applicator |
| DE3100101C2 (en) * | 1981-01-05 | 1983-11-10 | Bolton-Emerson, Inc., Lawrence, Mass. | Device for applying a thin layer of a coating material to a material web |
| IT8267442A0 (en) * | 1982-04-05 | 1982-04-05 | Rotomec Costr Mecc | DEVICE FOR SPREADING A SUBSTANCE ONTO A TAPE MATERIAL |
| JPS58207964A (en) * | 1982-05-31 | 1983-12-03 | Nippon Furuuto Kk | Apparatus for applying adhesive agent |
| US4550681A (en) * | 1982-10-07 | 1985-11-05 | Johannes Zimmer | Applicator for uniformly distributing a flowable material over a receiving surface |
| US4534309A (en) * | 1983-11-17 | 1985-08-13 | Consolidated Papers, Inc. | Paper coating apparatus |
-
1984
- 1984-02-20 DE DE19843406099 patent/DE3406099A1/en not_active Withdrawn
- 1984-12-31 US US06/688,016 patent/US4765272A/en not_active Expired - Lifetime
-
1985
- 1985-02-05 FI FI850473A patent/FI81733C/en not_active IP Right Cessation
- 1985-02-06 AU AU38481/85A patent/AU568423B2/en not_active Ceased
- 1985-02-14 EP EP85101631A patent/EP0152921B1/en not_active Expired
- 1985-02-14 DE DE8585101631T patent/DE3573219D1/en not_active Expired
- 1985-02-14 AT AT85101631T patent/ATE46633T1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0369441A3 (en) * | 1988-11-18 | 1991-01-23 | Bematec Sa | Coating device for webs |
Also Published As
| Publication number | Publication date |
|---|---|
| FI850473L (en) | 1985-08-21 |
| FI81733C (en) | 1990-12-10 |
| FI850473A0 (en) | 1985-02-05 |
| DE3573219D1 (en) | 1989-11-02 |
| AU568423B2 (en) | 1987-12-24 |
| AU3848185A (en) | 1985-08-29 |
| EP0152921A3 (en) | 1986-12-10 |
| DE3406099A1 (en) | 1985-08-22 |
| FI81733B (en) | 1990-08-31 |
| EP0152921B1 (en) | 1989-09-27 |
| US4765272A (en) | 1988-08-23 |
| ATE46633T1 (en) | 1989-10-15 |
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