EP2063206B1 - Device for treating a substrate web - Google Patents
Device for treating a substrate web Download PDFInfo
- Publication number
- EP2063206B1 EP2063206B1 EP08020125.4A EP08020125A EP2063206B1 EP 2063206 B1 EP2063206 B1 EP 2063206B1 EP 08020125 A EP08020125 A EP 08020125A EP 2063206 B1 EP2063206 B1 EP 2063206B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning
- substrate web
- accordance
- nozzle
- guide
- 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.)
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Links
- 239000000758 substrate Substances 0.000 title claims description 64
- 238000004140 cleaning Methods 0.000 claims description 78
- 238000001035 drying Methods 0.000 claims description 70
- 239000000126 substance Substances 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
- B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
Definitions
- the invention relates to a device for treating a substrate web, in particular for drying a substrate web.
- a device is off WO 02/093096 known.
- convection dryers are now used, inter alia.
- energy is introduced into the product by means of air and the volatile substances or water vapor are taken up by the air stream.
- the substrate web is passed through the convection dryer, where it is acted upon on one or both sides by the air flow.
- high production speeds are achieved depending on the product. The disadvantage is that when changing from one product to another cleaning operations are necessary so that the subsequent product can pass without contamination the drying device.
- the object of the invention is to provide a device in which it is ensured that various products can be produced successively with reproducible purity and at the same time the productivity is increased over known devices by shortening the cleaning time.
- this object is achieved with a device having the features of claim 1.
- this device for treating a substrate web is a drying device, such as a convection dryer or a floating dryer.
- the advantageous inventive features can also be usefully used in other treatment devices in which a substrate web is moved by means of guide devices, such as rollers, through the treatment room.
- a drying section In the housing of the drying device, a drying section is provided, through which the substrate web to be dried can be transported.
- guide devices are provided in the drying section.
- guide devices In a convection dryer guide devices are provided in the form of guide rollers.
- the substrate web In a floating dryer, the substrate web is transported by means of an air flow exiting from nozzle arrangements. These nozzle arrangements are in the Guides provided.
- the drying process is described below using the example of a convection dryer.
- the drying of the substrate web is achieved by means of a gaseous medium, such as air, which is introduced through an inflow in the housing and is conducted via a nozzle arrangement in the direction of the substrate web.
- the contaminated medium is removed by a drain in the housing.
- This is not a recirculation system, so that in a product change only the area within the drying device, in particular the drying section, must be cleaned.
- the invention provides that the already existing guide rollers are equipped with cleaning nozzles. This means that the guide rollers serve to transport the substrate web during drying and during the cleaning process, the guide rollers are used as a spraying device.
- the guide roller is for this purpose preferably designed as a cylindrical hollow body, so that the cleaning substances are introduced from the outside in this cylindrical hollow body and are distributed from there via one or more nozzles sprayed.
- the cylinder wall of the guide roller is provided with openings, which widen in particular outwardly. In such wedge-shaped openings results in a fanned spray, which is able to act on a large area of the inner surface of the drying device and thus to clean.
- the spray function can also take over separate, known nozzle body, which are inserted into the guide roller, said nozzle body, of course, do not project beyond the roller surface of the guide roller, so as not to influence the transport function of the guide roller.
- These nozzle bodies can be designed so that they achieve a wide-ranging cleaning jet. It is essential that all contaminated areas of the Drying section can be achieved by the effluent from the guide roller cleaning substances.
- a plurality of cleaning nozzles are arranged adjacent to each other over the width of the guide roller. In this way, it is ensured that cleaning substances flow out over the entire width of the drying section. With rotatable guide rolls, the cleaning stream, which then emerges from the cleaning nozzles, reaches areas above and below the guide roll as well as adjacent to the guide roll. In order to clean the entire drying section, it may further be provided that all guide rollers are equipped with cleaning nozzles. In addition, it can be provided that the guide rollers are arranged to be adjustable in height and displaceable in the direction of movement of the substrate web in the drying section, in order to achieve an optimal spraying of the drying section in this way.
- the cleaning nozzles are arranged offset over the entire circumference of the guide roller. In this case, the guide roller does not need to be turned during the cleaning process.
- the cleaning substances may be tempered.
- means are provided for controlling the temperature of the cleaning substances. These can be arranged both inside and outside the drying device.
- An advantageous embodiment of a device according to the invention further has a specially designed drying section, which is designed as a virtually closed drying chamber. Openings in the drying space represent the inlet and outlet of the substrate web, the nozzle openings, which are exposed to the substrate web with air or other gaseous medium and the outflow for the corresponding medium.
- a drying space is achieved when, starting from the respective nozzles of the nozzle assembly adjacent Guiding plates are provided, wherein between two nozzles, the baffles represent a closed surface.
- the drying section is bounded above by a virtually closed ceiling which is interrupted only by the nozzle openings, preferably slot-shaped openings provided over the width of the substrate web.
- Such an upper surface of the drying section can be easily decontaminated with cleaning substances flowing out of the cleaning nozzles of the guide rollers.
- the baffles which are the boundary of the drying section, are aligned between the nozzle openings so as to face away from the substrate web. In this way, the space available for drying is increased.
- the baffles are arched away from the substrate web or, for example, at a nozzle arrangement arranged above the substrate web, triangular baffle surfaces, which are in the form of pointed roofs, are located between the nozzle openings in cross-section. Even such arrangements of baffles can be cleaned quite easily, since they have no inaccessible areas.
- a nozzle arrangement is provided above the substrate web.
- a nozzle arrangement can also be provided below the substrate web or the substrate web can be exposed to gaseous medium on both sides.
- Such devices can be cleaned in the same way with cleaning substances which flow out of cleaning nozzles of the guide rollers.
- the special configuration of the nozzle arrangement with the closed baffle surfaces simplifies cleaning and limits the area to be cleaned. Even in the case where a guide roller is disposed immediately below a nozzle opening, hardly any cleaning substance is introduced in the area above the nozzles, the so-called pressure space.
- the Fig. 1 and 2 show a drying device 10 according to the invention.
- This drying device 10 may be part of a larger drying plant containing a plurality of these drying devices shown 10 or may also be part of a production plant for the production and / or coating of a substrate web 60.
- the substrate web 60 runs left into the housing 11 of the drying device 10, moves in the direction of movement 61 to the right and runs out of the housing 11 of the drying device on the right side.
- the movement of the substrate web is supported by guide rollers 20.
- the substrate web 60 is charged with gaseous medium, namely air, which absorbs volatile substances from the substrate web and / or causes drying of the substrate web 60 by heat exchange.
- the air flows are in the Fig.
- the substrate web 60 passes through a drying section 12 of the drying device 10 for this purpose Fig. 1 the drying section 12 is bounded upwards by the nozzle arrangement 30.
- This nozzle assembly 30 forms several individual nozzles. From each nozzle opening 31 flows gaseous. Medium, namely air, which is supplied to the drying device 10 via the inflow 13 and the pressure chamber 14, on the substrate web 60 and is subsequently passed out of the drying device 10 via a drain, not shown.
- the air emerging from the nozzles flows, in particular, along the substrate web 60 in the direction of movement 61 and counter to the direction of movement 61 of the substrate web 60. Transverse flows may also occur across the width of the substrate web 60.
- the area between the nozzle arrangement 30 and the substrate web 60 is selected to be as large as possible.
- the guide plates 32 are formed between the nozzle openings 31 as a closed surface, which each form a roof-shaped superstructure of the respective area above the substrate web 60 between two nozzle openings 31.
- the drying section 12 is thus limited upwards by the baffles 32. Except for the nozzle openings 31, which extend as slots across the width of the substrate web 60, thereby an almost closed cover of the drying section 12 is achieved. This results in an easy to clean drying room.
- a cleaning may be necessary after the entire length of the substrate web 60 has passed the drying device 10 and a new product is to be treated in the same system.
- this gaseous medium absorbs volatile substances from the substrate web 60 or from the coating of the substrate web 60.
- This contaminated gaseous medium is deposited on the baffles and the other boundaries of the drying section 12, such as the inner walls of the housing 11 and the guide rollers 20.
- a comprehensive cleaning process is necessary.
- a selected cleaning substance 70 can be introduced into the cylindrical cavity of the guide roller 20 through an inlet 23.
- the guide roller 20 has a plurality of separate cleaning nozzles 21, which are distributed over the guide roller 20.
- the cleaning nozzles 21 are adjacent distributed in a row over the entire width of the drying device 10.
- the cleaning nozzles 21 are in this case known nozzles which are inserted into the guide roller 20, which is apparent from the Fig. 2 can not be seen.
- cleaning nozzles 21 terminate with the roller surface 22, so that they do not project beyond this roller surface 22 in order not to influence the function of the guide roller 20 as a transport roller for a substrate web 60.
- the cleaning substances 70 fan out of the cleaning nozzles 21 and are sprayed over the entire width of the device 10. In this case, it can be seen that the cleaning substances 70 are directed against the baffles 32 of the nozzle assembly 30.
- the adjacent regions of the respective guide roller 20, such as housing walls and the lower part of the drying section 12 are subjected to cleaning substances 70.
- Such a cleaning has the advantage that it can take place automatically.
- a cleaning process by means of the existing guide rollers 20, which serve as a spray device for the cleaning substances 70, is easy to accomplish without much effort.
- the drying section 12 closed at the top ie by the almost closed surface of the guide plates 32, the cleaning process becomes additional simplified. This provides a simple option for CIP cleaning (cleaning in place). This cleaning ensures reproducible cleaning results for all products. Since the drying device 10 does not have to be disassembled, the cleaning process is also comparatively very fast.
- the device 10 is not substantially changed by the additional cleaning nozzles 21, so that it can be assumed that the substrate webs 60 can be guided through the device 10 at the same production speeds via the guide rollers 20.
- the invention is not limited to the embodiment. Rather, further embodiments of a convection dryer are conceivable.
- another arrangement of the cleaning nozzles 21 in the guide roller 20 is conceivable, for example, that they are distributed over the entire circumference of the guide roller 20.
- Each guide roll 20 may be equipped with cleaning nozzles 21, but guide rolls 20 may be provided without this additional equipment.
- the guide rollers 20 may be provided directly below the nozzles of the nozzle assembly 30, as shown in FIG Fig. 1 is shown, but it is also possible that they are located directly in the middle under the roof formed by the baffles 32, in order to better rinse this in a cleaning process can.
- Such an arrangement is particularly advantageous even if the nozzle opening is relatively large, since cleaning substance 70 can otherwise enter the pressure chamber 14 from the guide rollers 20 during the cleaning process through the nozzle opening 31.
- the above-described arrangement, namely the equipment of guide rollers 20 with cleaning nozzles 21 is also suitable for other devices for the treatment of a substrate web.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Cleaning By Liquid Or Steam (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Behandeln einer Substratbahn, insbesondere zum Trocknen einer Substratbahn. Eine derartige Vorrichtung ist aus
Aufgabe der Erfindung ist es, eine Vorrichtung zur Verfügung zu stellen, bei der gewährleistet ist, dass verschiedene Produkte nacheinander mit reproduzierbarer Reinheit herstellbar sind und gleichzeitig durch Verkürzung der Reinigungszeit die Produktivität gegenüber bekannten Vorrichtungen gesteigert wird.The object of the invention is to provide a device in which it is ensured that various products can be produced successively with reproducible purity and at the same time the productivity is increased over known devices by shortening the cleaning time.
Diese Aufgabe wird mit einer Vorrichtung mit den Merkmalen des Anspruches 1 gelöst. Bei dieser Vorrichtung zum Behandeln einer Substratbahn handelt es sich insbesondere um eine Trocknungsvorrichtung, wie beispielsweise ein Konvektionstrockner oder ein Schwebetrockner. Die vorteilhaften erfinderischen Merkmale lassen sich jedoch auch bei anderen Behandlungsvorrichtungen sinnvoll einsetzen, bei denen eine Substratbahn mittels Leiteinrichtungen, wie beispielsweise Walzen, durch den Behandlungsraum bewegt wird.This object is achieved with a device having the features of claim 1. In particular, this device for treating a substrate web is a drying device, such as a convection dryer or a floating dryer. However, the advantageous inventive features can also be usefully used in other treatment devices in which a substrate web is moved by means of guide devices, such as rollers, through the treatment room.
Im Gehäuse der Trocknungsvorrichtung ist ein Trocknungsabschnitt vorgesehen, durch den die zu trocknende Substratbahn transportiert werden kann. Zum Transport der Substratbahn sind im Trocknungsabschnitt Leiteinrichtungen vorgesehen. Bei einem Konvektionstrockner werden Leiteinrichtungen in Form von Leitwalzen vorgesehen. Bei einem Schwebetrockner wird die Substratbahn mittels eines aus Düsenanordnungen austretenden Luftstroms transportiert. Diese Düsenanordnungen sind in den Leiteinrichtungen vorgesehen. Nachfolgend wird die Trocknung am Beispiel eines Konvektionstrockners beschrieben. Die Trocknung der Substratbahn wird mittels eines gasförmigen Mediums, wie beispielsweise Luft, erzielt, die durch einen Zufluss im Gehäuse eingebracht wird und über eine Düsenanordnung in Richtung der Substratbahn geleitet wird. Nach dem Wärme- und Stoffaustausch zwischen der Substratbahn und dem gasförmigen Medium wird das kontaminierte Medium durch einen Abfluss im Gehäuse entfernt. Hierbei handelt es sich nicht um eine Umluftführung, so dass bei einem Produktwechsel ausschließlich der Bereich innerhalb der Trocknungsvorrichtung, insbesondere der Trocknungsabschnitt, gereinigt werden muss. Für eine automatisierte Reinigung sieht die Erfindung vor, dass die bereits vorhandenen Leitwalzen mit Reinigungsdüsen ausgerüstet sind. Dies bedeutet, dass die Leitwalzen während der Trocknung zum Transport der Substratbahn dienen und beim Reinigungsvorgang werden die Leitwalzen als Sprühvorrichtung eingesetzt.In the housing of the drying device, a drying section is provided, through which the substrate web to be dried can be transported. For transporting the substrate web, guide devices are provided in the drying section. In a convection dryer guide devices are provided in the form of guide rollers. In a floating dryer, the substrate web is transported by means of an air flow exiting from nozzle arrangements. These nozzle arrangements are in the Guides provided. The drying process is described below using the example of a convection dryer. The drying of the substrate web is achieved by means of a gaseous medium, such as air, which is introduced through an inflow in the housing and is conducted via a nozzle arrangement in the direction of the substrate web. After the heat and mass transfer between the substrate web and the gaseous medium, the contaminated medium is removed by a drain in the housing. This is not a recirculation system, so that in a product change only the area within the drying device, in particular the drying section, must be cleaned. For automated cleaning, the invention provides that the already existing guide rollers are equipped with cleaning nozzles. This means that the guide rollers serve to transport the substrate web during drying and during the cleaning process, the guide rollers are used as a spraying device.
Beim in der geschlossenen Trocknungsvorrichtung ausführbaren Reinigungsvorgang werden von außen flüssige und/oder gasförmige Reinigungssubstanzen eingeleitet und über die Leitwalze in den Trocknungsabschnitt gesprüht. Die Leitwalze ist hierzu vorzugsweise als zylindrischer Hohlkörper ausgebildet, so dass die Reinigungssubstanzen von außen in diesem zylindrischen Hohlkörper eingebracht werden und von dort verteilt über ein oder mehrere Düsen ausgesprüht werden. Im einfachsten Fall ist die Zylinderwand der Leitwalze mit Öffnungen versehen, die sich insbesondere nach außen hin verbreitern. Bei solchen keilförmigen Öffnungen ergibt sich ein aufgefächerter Sprühstrahl, der in der Lage ist, einen großen Bereich der Innenfläche der Trocknungsvorrichtung zu beaufschlagen und damit zu reinigen. Die Sprühfunktion können auch separate, bekannte Düsenkörper übernehmen, die in die Leitwalze eingesetzt sind, wobei diese Düsenkörper die Walzenoberfläche der Leitwalze natürlich nicht überragen, um die Transportfunktion der Leitwalze nicht zu beeinflussen. Diese Düsenkörper können so ausgestaltet sein, dass sie einen weit gefächerten Reinigungsstrahl erzielen. Wesentlich ist, dass sämtliche kontaminierte Bereiche des Trocknungsabschnittes durch die aus der Leitwalze ausströmenden Reinigungssubstanzen erreicht werden.When executing in the closed drying device cleaning process from the outside liquid and / or gaseous cleaning substances are introduced and sprayed via the guide roller in the drying section. The guide roller is for this purpose preferably designed as a cylindrical hollow body, so that the cleaning substances are introduced from the outside in this cylindrical hollow body and are distributed from there via one or more nozzles sprayed. In the simplest case, the cylinder wall of the guide roller is provided with openings, which widen in particular outwardly. In such wedge-shaped openings results in a fanned spray, which is able to act on a large area of the inner surface of the drying device and thus to clean. The spray function can also take over separate, known nozzle body, which are inserted into the guide roller, said nozzle body, of course, do not project beyond the roller surface of the guide roller, so as not to influence the transport function of the guide roller. These nozzle bodies can be designed so that they achieve a wide-ranging cleaning jet. It is essential that all contaminated areas of the Drying section can be achieved by the effluent from the guide roller cleaning substances.
In einer besonderen Ausführungsform kann vorgesehen sein, dass über die Breite der Leitwalze mehrere Reinigungsdüsen benachbart zueinander angeordnet sind. Auf diese Weise wird gewährleistet, dass über die gesamte Breite des Trocknungsabschnittes Reinigungssubstanzen ausströmen. Bei drehbaren Leitwalzen erreicht der Reinigungsstrom, der dann aus den Reinigungsdüsen austritt, Bereiche oberhalb sowie unterhalb der Leitwalze als auch benachbart zur Leitwalze. Um den gesamten Trocknungsabschnitt zu reinigen, kann des Weiteren vorgesehen sein, dass sämtliche Leitwalzen mit Reinigungsdüsen ausgerüstet sind. Darüber hinaus kann vorgesehen werden, dass die Leitwalzen höhenverstellbar als auch in Bewegungsrichtung der Substratbahn verschiebbar im Trocknungsabschnitt angeordnet sind, um auf diese Weise ein optimales Aussprühen des Trocknungsabschnittes zu erzielen.In a particular embodiment it can be provided that a plurality of cleaning nozzles are arranged adjacent to each other over the width of the guide roller. In this way, it is ensured that cleaning substances flow out over the entire width of the drying section. With rotatable guide rolls, the cleaning stream, which then emerges from the cleaning nozzles, reaches areas above and below the guide roll as well as adjacent to the guide roll. In order to clean the entire drying section, it may further be provided that all guide rollers are equipped with cleaning nozzles. In addition, it can be provided that the guide rollers are arranged to be adjustable in height and displaceable in the direction of movement of the substrate web in the drying section, in order to achieve an optimal spraying of the drying section in this way.
Bei einer weiteren Ausführungsform der Erfindung sind die Reinigungsdüsen über den gesamten Umfang der Leitwalze versetzt angeordnet. In diesem Fall muss die Leitwalze während des Reinigungsvorgangs nicht gedreht werden.In a further embodiment of the invention, the cleaning nozzles are arranged offset over the entire circumference of the guide roller. In this case, the guide roller does not need to be turned during the cleaning process.
In besonderen Fällen kann es notwendig sein, dass die Reinigungssubstanzen temperiert sind. In diesem Fall werden Mittel zur Temperierung der Reinigungssubstanzen vorgesehen. Diese können sowohl innerhalb als auch außerhalb der Trocknungsvorrichtung angeordnet sein.In special cases, it may be necessary for the cleaning substances to be tempered. In this case, means are provided for controlling the temperature of the cleaning substances. These can be arranged both inside and outside the drying device.
Eine vorteilhafte Ausführungsform einer erfindungsgemäßen Vorrichtung besitzt des Weiteren einen besonders ausgestalteten Trocknungsabschnitt, der als nahezu geschlossener Trocknungsraum ausgestaltet ist. Öffnungen im Trocknungsraum stellen der Eingang und Ausgang der Substratbahn dar, die Düsenöffnungen, mit denen die Substratbahn mit Luft oder einem anderen gasförmigen Medium beaufschlagt wird sowie der Abfluss für das entsprechende Medium. Ein solcher Trocknungsraum wird erzielt, wenn ausgehend von den jeweiligen Düsen der Düsenanordnung benachbart Leitbleche vorgesehen sind, wobei zwischen zwei Düsen die Leitbleche eine geschlossene Fläche darstellen. Dies bedeutet, bei einer Düsenanordnung, die oberhalb der Substratbahn angeordnet ist, wird der Trocknungsabschnitt nach oben durch eine nahezu geschlossene Decke begrenzt, die ausschließlich durch die Düsenöffnungen, vorzugsweise über die Breite der Substratbahn vorgesehene schlitzförmige Öffnungen, unterbrochen ist. Eine solche obere Fläche des Trocknungsabschnittes lässt sich sehr einfach mit aus den Reinigungsdüsen der Leitwalzen ausströmenden Reinigungssubstanzen entkontaminieren.An advantageous embodiment of a device according to the invention further has a specially designed drying section, which is designed as a virtually closed drying chamber. Openings in the drying space represent the inlet and outlet of the substrate web, the nozzle openings, which are exposed to the substrate web with air or other gaseous medium and the outflow for the corresponding medium. Such a drying space is achieved when, starting from the respective nozzles of the nozzle assembly adjacent Guiding plates are provided, wherein between two nozzles, the baffles represent a closed surface. This means that in the case of a nozzle arrangement which is arranged above the substrate web, the drying section is bounded above by a virtually closed ceiling which is interrupted only by the nozzle openings, preferably slot-shaped openings provided over the width of the substrate web. Such an upper surface of the drying section can be easily decontaminated with cleaning substances flowing out of the cleaning nozzles of the guide rollers.
Bei einer weiteren Ausführungsform sind die Leitbleche, die die Begrenzung des Trocknungsabschnittes darstellen, zwischen den Düsenöffnungen so ausgerichtet, dass sie von der Substratbahn wegweisen. Auf diese Weise wird der für die Trocknung zur Verfügung stehende Raum vergrößert. Im besonderen Fall sind die Leitbleche von der Substratbahn weggewölbt oder beispielsweise bei einer oberhalb der Substratbahn angeordneten Düsenanordnung befinden sich zwischen den Düsenöffnungen im Querschnitt dreieckige Leitblechflächen, die die Form von Spitzdächern zeigen. Auch solche Anordnungen von Leitblechen lassen sich recht einfach reinigen, da sie keine unzugänglichen Bereiche aufweisen.In another embodiment, the baffles, which are the boundary of the drying section, are aligned between the nozzle openings so as to face away from the substrate web. In this way, the space available for drying is increased. In the particular case, the baffles are arched away from the substrate web or, for example, at a nozzle arrangement arranged above the substrate web, triangular baffle surfaces, which are in the form of pointed roofs, are located between the nozzle openings in cross-section. Even such arrangements of baffles can be cleaned quite easily, since they have no inaccessible areas.
In vielen Bereichen wird ausschließlich eine Düsenanordnung oberhalb der Substratbahn vorgesehen. In gleicher Weise kann jedoch auch eine Düsenanordnung unterhalb der Substratbahn vorgesehen sein oder die Substratbahn beidseitig mit gasförmigem Medium beaufschlagt werden. Derartige Vorrichtungen können in gleicher Weise mit Reinigungssubstanzen, die aus Reinigungsdüsen der Leitwalzen ausströmen, gereinigt werden.In many areas only a nozzle arrangement is provided above the substrate web. In the same way, however, a nozzle arrangement can also be provided below the substrate web or the substrate web can be exposed to gaseous medium on both sides. Such devices can be cleaned in the same way with cleaning substances which flow out of cleaning nozzles of the guide rollers.
Für eine Produktionsanlage werden in der Regel mehrere solche Trocknungsvorrichtungen benötigt, die in Bewegungsrichtung der Substratbahn hintereinander angeordnet sind und auf die gleiche Weise gleichzeitig und automatisch zu reinigen sind.For a production plant several such drying devices are usually required, which are arranged one behind the other in the direction of movement of the substrate web and are to be cleaned simultaneously and automatically in the same way.
Durch die besondere Ausgestaltung der Düsenanordnung mit den geschlossenen Leitblechflächen vereinfacht sich die Reinigung und wird der zu reinigende Bereich begrenzt. Selbst in dem Fall, wo eine Leitwalze unmittelbar unter einer Düsenöffnung angeordnet ist, wird kaum Reinigungssubstanz in dem Bereich oberhalb der Düsen, dem sogenannten Druckraum, eingeleitet.The special configuration of the nozzle arrangement with the closed baffle surfaces simplifies cleaning and limits the area to be cleaned. Even in the case where a guide roller is disposed immediately below a nozzle opening, hardly any cleaning substance is introduced in the area above the nozzles, the so-called pressure space.
Weitere Maßnahmen und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, der nachfolgenden Beschreibung und den Zeichnungen. In den Zeichnungen ist die Erfindung in einem Ausführungsbeispiel dargestellt. Es zeigen:
- Fig. 1
- einen Längsschnitt durch eine erfindungsgemäße Trocknungsvorrichtung,
- Fig. 2
- einen Querschnitt durch die Trocknungsvorrichtung gemäß
Fig. 1 .
- Fig. 1
- a longitudinal section through a drying device according to the invention,
- Fig. 2
- a cross section through the drying device according to
Fig. 1 ,
Die
Eine Reinigung kann notwendig sein, nachdem die gesamte Länge der Substratbahn 60 die Trocknungsvorrichtung 10 passiert hat und ein neues Produkt in der gleichen Anlage behandelt werden soll. Während der Beaufschlagung der Substratbahn 60 mit dem gasförmigen Medium nimmt dieses gasförmige Medium flüchtige Substanzen aus der Substratbahn 60 oder aus der Beschichtung der Substratbahn 60 auf. Dieses kontaminierte gasförmige Medium schlägt sich an den Leitflächen und den weiteren Begrenzungen des Trocknungsabschnittes 12 nieder, wie beispielsweise den Innenwänden des Gehäuses 11und den Leitwalzen 20. Insbesondere wenn ein neues, andersartiges Produkt durch die Trocknungsvorrichtung geleitet werden soll, bei dem unbedingt verhindert werden muss, dass dieses mit den Kontaminationen der vorhergehenden Substratbahn 60 verunreinigt wird, ist ein umfassender Reinigungsprozess notwendig.A cleaning may be necessary after the entire length of the
In der
Eine solche Reinigung hat den Vorteil, dass sie automatisiert stattfinden kann. Es sind gegenüber bekannten Vorrichtungen keine zusätzlichen Bauteile in der Vorrichtung 10 vorhanden, so dass auch keine weiteren Bauteile die Reinigung kompliziert gestalten können. Ein Reinigungsprozess mittels der vorhandenen Leitwalzen 20, die als Sprühvorrichtung für die Reinigungssubstanzen 70 dienen, ist einfach, ohne großen Aufwand zu bewerkstelligen. Durch den nach oben abgeschlossenen Trocknungsabschnitt 12, d.h. durch die nahezu geschlossene Fläche der Leitbleche 32, wird der Reinigungsprozess zusätzlich vereinfacht. Damit wird eine einfache Möglichkeit einer CIP-Reinigung (Cleaning in Place) zur Verfügung gestellt. Diese Reinigung gewährleistet für alle Produkte reproduzierbare Reinigungsergebnisse. Da die Trocknungsvorrichtung 10 nicht auseinandergebaut werden muss, ist der Reinigungsprozess auch vergleichsweise sehr schnell. Die Vorrichtung 10 wird durch die zusätzlichen Reinigungsdüsen 21 nicht wesentlich verändert, so dass davon auszugehen ist, dass die Substratbahnen 60 mit gleichen Produktionsgeschwindigkeiten über die Leitwalzen 20 durch die Vorrichtung 10 geleitet werden können.Such a cleaning has the advantage that it can take place automatically. There are no additional components in the
Die Erfindung ist nicht auf das Ausführungsbeispiel beschränkt. Es sind vielmehr weitere Ausführungen eines Konvektionstrockners denkbar. So ist beispielsweise eine andere Anordnung der Reinigungsdüsen 21 in der Leitwalze 20 denkbar, z.B. dass diese über den gesamten Umfang der Leitwalze 20 verteilt angeordnet sind. Es kann jede Leitwalze 20 mit Reinigungsdüsen 21 ausgestattet sein, es können jedoch auch Leitwalzen- 20 ohne diese zusätzliche Ausrüstung vorgesehen sein. Die Leitwalzen 20 können dabei unmittelbar unterhalb der Düsen der Düsenanordnung 30 vorgesehen sein, wie dies in
- 1010
- Vorrichtungcontraption
- 1111
- Gehäusecasing
- 1212
- Trocknungsabschnittdrying section
- 1313
- Zufluss gasförmiges MediumInflow gaseous medium
- 1414
- Druckraumpressure chamber
- 2020
- Leitwalzeguide roll
- 2121
- Reinigungsdüsecleaning nozzle
- 2222
- Walzenoberflächeroll surface
- 2323
- Zufluss ReinigungssubstanzInflow cleaning substance
- 2424
- Drehrichtungdirection of rotation
- 3030
- Düsenanordnungnozzle assembly
- 3131
- Düsenöffnungnozzle opening
- 3232
- Leitblechbaffle
- 6060
- Substratbahnsubstrate web
- 6161
- Bewegungsrichtungmovement direction
- 7070
- Reinigungssubstanzcleaning substance
Claims (14)
- A device (10) for treating a substrate web (60),
with a housing (11) that features a minimum of one treatment stage (12) for the substrate web (60), an inlet (13) and an outlet for a medium,
whereby, in the treatment stage (12), a minimum of one guide device, in particular in the form of a guide roller (20), is arranged for transportation of the substrate web (60),
whereby, to apply medium to the substrate web (60), a minimum of one nozzle arrangement (30) is provided, through which the medium can be directed into the treatment stage (12),
characterized in that,
there is a device for cleaning, which includes an inlet (23) for cleaning substances (70) for the guide device and a minimum of one nozzle provided on the guide device - known as cleaning nozzle (21),
whereby, using the cleaning nozzle (21) of the guide device, liquid and/or gaseous cleaning substances (70) can be directed into the treatment stage (12) to be cleaned. - Device in accordance with claim 1, characterized in that the treatment stage is a drying stage (12) and the substrate web (60) is applied with gaseous medium through the nozzle arrangement (30), whereby, the nozzle arrangement (30) is provided above and/ or below the substrate web (60).
- Device in accordance with claim 2, characterized in that a guide roller (20) is formed as a cylindrical hollow body, whereby, in the cylinder wall, wedge-shaped apertures are provided, externally diffusing, that function as the cleaning nozzle (21).
- Device in accordance with one of the claims 1 to 3, characterized in that separate nozzle bodies are inserted in the guide roller (20) as cleaning nozzles (21), whereby, these nozzle bodies do not protrude over the roller surface (22).
- Device in accordance with one of the claims 1 to 4, characterized in that multiple cleaning nozzles (21) are provided adjacent on the guide roller (20), so that when cleaning, the cleaning substances (70) can flow out over the complete width of the drying stage (12) and / or the guide roller (20) is formed to be rotated so that, when cleaning, the cleaning substances (70) can flow out over the complete height of the drying stage (12).
- Device in accordance with one of the claims 1 to 4, characterized in that multiple cleaning nozzles (21) are distributed across the complete circumference of the guide roller (20).
- Device in accordance with one of the claims 1 to 7, characterized in that a means of controlling the temperature of the cleaning substances (70) is provided.
- Device in accordance with claim 2, characterized in that the nozzle arrangement (30) comprises of multiple individual nozzles (31), arranged adjacent to the direction of motion (61) of the substrate web (60), between which, guide plates (32) are provided that restrict the drying stage (12) upwards and/ or downwards, whereby, the guide plates (32) are preferably aligned away from the substrate web (60), originating from the nozzle opening (31).
- Device in accordance with claim 8, characterized in that the guide plates (32) arranged between the two nozzle openings (31), presents a closed area, preferably an area aligned away from the substrate web (60), particularly preferred is a curved or a point-shaped area.
- Device in accordance with one of the claims 1 to 9, characterized in that the drying stage (12) presents a closed drying space, except for the nozzle openings (31) and the inlet, as well as the outlet of the substrate web (60).
- Device in accordance with one of the claims 1 to 13, characterized in that the guide roller (20) can be adjusted in the height and/ or is formed to be pushed in the direction of motion (61) of the substrate web (60).
- Device in accordance with claim 1, characterized in that the guide device features air nozzles, whereby, the flow of air flowing from the air nozzles is used to transport the substrate web (60).
- Device in accordance with claim 12, characterized in that the air nozzles are used as cleaning nozzles (21).
- Device in accordance with claim 1, characterized in that the cleaning nozzles (21) are provided in addition to the air nozzles.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200720016425 DE202007016425U1 (en) | 2007-11-22 | 2007-11-22 | Apparatus for treating a substrate web |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2063206A2 EP2063206A2 (en) | 2009-05-27 |
EP2063206A3 EP2063206A3 (en) | 2014-04-02 |
EP2063206B1 true EP2063206B1 (en) | 2016-10-05 |
Family
ID=38990004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08020125.4A Active EP2063206B1 (en) | 2007-11-22 | 2008-11-19 | Device for treating a substrate web |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2063206B1 (en) |
DE (1) | DE202007016425U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110500866A (en) * | 2019-07-17 | 2019-11-26 | 徐州祥华丝绸有限公司 | A kind of silk goods have the drying machine equipment of the multiple rows of air port heat-force dry of rotation |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008034453A1 (en) * | 2008-07-24 | 2010-02-11 | Lts Lohmann Therapie-Systeme Ag | Method for producing a multi-layer composite on a CIP-capable coating system and use of the multilayer composite produced therewith for transdermal application or application in body cavities |
CN111359965A (en) * | 2020-04-01 | 2020-07-03 | 江西铜博科技有限公司 | Surface cleaning device used before copper foil rolling |
CN114877652B (en) * | 2022-07-12 | 2022-10-14 | 佛山市新飞卫生材料有限公司 | From type paper suspension oven |
DE102022120125A1 (en) | 2022-08-10 | 2024-02-15 | Bayerische Motoren Werke Aktiengesellschaft | Method for transferring process parameters of a one- or two-chamber dryer for drying a coating applied to a substrate to a chamber dryer with at least three drying chambers |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5077913A (en) * | 1989-08-31 | 1992-01-07 | Measurex Corporation | Self-cleaning steambox |
US6134811A (en) * | 1996-06-24 | 2000-10-24 | Sundwig Gmbh | Device for removing liquid from the surface of a band |
EP1118707A1 (en) * | 1999-12-14 | 2001-07-25 | Valmet, Inc. | Device and method for protecting a carrying fabric |
DE10123809A1 (en) * | 2001-05-16 | 2002-11-21 | Voith Paper Patent Gmbh | Through-flow cylinder for tissue drying plant, comprises fiber-reinforced plastic |
DE10335750A1 (en) * | 2003-08-05 | 2005-03-03 | Voith Paper Patent Gmbh | Steam pulse jet for paper or carton making process is directed at sieve belt sandwiched web located over a shallow suction hood |
DE10361539A1 (en) * | 2003-12-23 | 2005-07-28 | Tesa Ag | Nozzle case cleaning device for suspension nozzle dryer, has drive unit that moves cleaning unit along outlet surfaces of nozzle case units, such that cleaning unit gently rubs over one part of each surface |
-
2007
- 2007-11-22 DE DE200720016425 patent/DE202007016425U1/en not_active Expired - Lifetime
-
2008
- 2008-11-19 EP EP08020125.4A patent/EP2063206B1/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110500866A (en) * | 2019-07-17 | 2019-11-26 | 徐州祥华丝绸有限公司 | A kind of silk goods have the drying machine equipment of the multiple rows of air port heat-force dry of rotation |
Also Published As
Publication number | Publication date |
---|---|
EP2063206A2 (en) | 2009-05-27 |
DE202007016425U1 (en) | 2008-01-31 |
EP2063206A3 (en) | 2014-04-02 |
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