EP0626478B1 - Apparatus for selectively treating a moving web - Google Patents
Apparatus for selectively treating a moving web Download PDFInfo
- Publication number
- EP0626478B1 EP0626478B1 EP94104915A EP94104915A EP0626478B1 EP 0626478 B1 EP0626478 B1 EP 0626478B1 EP 94104915 A EP94104915 A EP 94104915A EP 94104915 A EP94104915 A EP 94104915A EP 0626478 B1 EP0626478 B1 EP 0626478B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- drying
- intermediate space
- cylinders
- diverting
- 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
Links
- 238000001035 drying Methods 0.000 claims abstract description 36
- 239000011248 coating agent Substances 0.000 claims abstract description 28
- 238000000576 coating method Methods 0.000 claims abstract description 28
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000011111 cardboard Substances 0.000 claims description 3
- 239000011087 paperboard Substances 0.000 claims description 3
- 230000000485 pigmenting effect Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract 3
- 239000000123 paper Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/04—Drying on cylinders on two or more drying cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/009—Apparatus for glaze-coating paper webs
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
- D21H23/74—Apparatus permitting switching from one technique to another
Definitions
- the invention relates to a drying group with a device for the optional treatment of running webs, preferably made of paper or cardboard.
- the coating device is assigned to the drying group consisting of drying cylinders of a paper machine.
- FR-A-22 02 192 discloses a post-dryer group with a device for coating paper, a deflection roller being provided in an intermediate space between two adjacent drying cylinders, from which the web is fed to the coating device.
- the object of the invention is therefore to provide a space-saving after-dryer group, it also being possible to bypass the coating device.
- the bypass route should be as simple as possible and short.
- the space between the two adjacent drying cylinders of the after-dryer group corresponds to the at least one deflection roller for bridging the space in the event that the web is not treated by a coating device arranged in this area of the web course for painting, pigmenting or gluing, and the takes up at least one further deflection roller, at most two diameters of the drying cylinders.
- the coating device is arranged practically above this space.
- Dryers which preferably work on the basis of infrared radiation or hot air, are preferably located in front of the coating device. With existing paper machines, it is therefore practically only necessary to remove two adjacent drying cylinders and to provide the necessary guide rollers for the web in the free space that is created.
- the coating device here preferably consists of two press rolls or web guide rolls 1 and 2 which form a press nip with one another. Each of them is assigned a coating applicator unit 3 or 3 ', which are constructed essentially identically and are arranged in mirror image.
- Each application unit can consist of a doctor blade or a similarly constructed holder 5 for a bed 7 of a doctor blade 6 and a throttle plate 8 connected upstream in the direction of movement of the outer surface of the press rolls, an application space for the coating slip or general coating compound being formed between these parts, which is preferably under is above atmospheric pressure, and to which the coating slip can be fed from a coating chamber 9.
- the coating device are Downstream heating devices 51, 52 and 53, which can work on infrared basis or with hot air.
- Further deflecting rollers 21-23 then feed the coated and pre-dried web to the remaining drying cylinders 49, 50 and the following, so that the web is completely dried.
- the coating device can only be used at a time when the web already has a considerable dry content, which is at least 75, preferably at least 80%.
- the coating device is suitable for impregnating the web with glue or for coating it with pigment.
- a moisture meter 40 is installed between the idlers 16 and 18.
- the coating device with the rollers 1 and 2 is preferably arranged on a higher machine floor or on a machine foundation arranged one floor higher than the drying cylinder group.
- the distance between the drying cylinders arranged at the space leading to the coating device is at most two diameters in length - based on the row arrangement of the drying cylinders.
- the great advantage of the arrangement is that in the event of a web break - if preferably on the coating machine - the web can easily be driven into the basement before it is re-threaded.
Abstract
Description
Die Erfindung betrifft eine Nachtrockengruppe mit einer Einrichtung zur wahlweisen Behandlung laufender Bahnen, vorzugsweise aus Papier oder Karton. Dabei ist die Streicheinrichtung der aus Trockenzylindern bestehenden Trockengruppe einer Papiermaschine zugeordnet.The invention relates to a drying group with a device for the optional treatment of running webs, preferably made of paper or cardboard. The coating device is assigned to the drying group consisting of drying cylinders of a paper machine.
Aus der FR-A-22 02 192 ist eine Nachtrockengruppe mit einer Einrichtung zum Streichen von Papier offenbart, wobei in einem Zwischenraum zwischen zwei benachbarten Trockenzylindern eine Umlenkrolle vorgesehen ist, von der die Bahn der Streicheinrichtung zugeführt wird.FR-A-22 02 192 discloses a post-dryer group with a device for coating paper, a deflection roller being provided in an intermediate space between two adjacent drying cylinders, from which the web is fed to the coating device.
Nachteilig an dieser Anordnung ist, daß sie sehr viel Raum einnimmt und die Bahn ständig durch die Streicheinrichtung geführt wird.The disadvantage of this arrangement is that it takes up a lot of space and the web is constantly guided through the coating device.
Die Aufgabe der Erfindung ist es daher, eine raumsparende Nachtrockengruppe anzugeben, wobei auch eine Umgehung der Beschichtungseinrichtung möglich sein soll. Dabei soll der Umgehungsweg möglichst einfach gebaut und kurz sein.The object of the invention is therefore to provide a space-saving after-dryer group, it also being possible to bypass the coating device. The bypass route should be as simple as possible and short.
Diese Aufgabe wird durch die Kombination der Merkmale des Anspruches 1 gelöst. Weitere Merkmale der Erfindung sind in den Ansprüchen 2 bis 6 enthalten.This object is achieved by the combination of the features of claim 1. Further features of the invention are contained in
Gemäß der Erfindung entspricht der Zwischenraum zwischen den zwei benachbarten Trockenzylindern der Nachtrockengruppe, der die mindestens eine Umlenkwalze zur Überbrückung des Zwischenraumes für den Fall, daß die Bahn nicht von einer in diesem Bereich des Bahnverlaufs angeordneten Streicheinrichtung zum Streichen, Pigmentieren oder Leimen behandelt wird und die mindestens weitere Umlenkrolle aufnimmt, höchstens zwei Durchmessern der Trockenzylinder. Dies erfordert nur nur eine geringe Vergrößerung der gesamten Maschinenlänge, so daß sich die Erfindung insbesondere für Umbauten bestehender Papiermaschinen eignet. Dadurch, daß eine Umschaltung der Bahnführung innerhalb eines Bereichs, der höchstens zwei Durchmessern der Trockenzylinder entspricht, vorgesehen ist, ist die Streicheinrichtung praktisch oberhalb dieses Zwischenraumes angeordnet. Vor der Streicheinrichtung befinden sich vorzugsweise Trockner, die vorzugsweise auf der Basis von Infrarotstrahlung oder Heißluft arbeiten. Bei bestehenden Papiermaschinen ist es daher praktisch nur nötig, zwei benachbarte Trockenzylinder zu entfernen und in dem entstehenden freien Raum die nötigen Leitrollen für die Bahn vorzusehen.According to the invention, the space between the two adjacent drying cylinders of the after-dryer group corresponds to the at least one deflection roller for bridging the space in the event that the web is not treated by a coating device arranged in this area of the web course for painting, pigmenting or gluing, and the takes up at least one further deflection roller, at most two diameters of the drying cylinders. This requires only a slight increase in the total length of the machine, so that the invention is particularly suitable for conversions to existing paper machines. The fact that a switching of the web guide within a range of at most two diameters of the drying cylinder is provided, the coating device is arranged practically above this space. Dryers, which preferably work on the basis of infrared radiation or hot air, are preferably located in front of the coating device. With existing paper machines, it is therefore practically only necessary to remove two adjacent drying cylinders and to provide the necessary guide rollers for the web in the free space that is created.
Nachfolgend wird die Erfindung anhand des in der Zeichnung dargestellten Ausführungsbeispieles erläutert.The invention is explained below using the exemplary embodiment shown in the drawing.
In der Figur sind von der Trockenzylindergruppe nur die Zylinder 46, 49 und 50 dargestellt, die in ihrer Numerierung auch ihrer zahlenmäßig fortlaufenden Nummern in der Papiermaschine entsprechen können. Die Bahnführung in dem Zwischenraum zwischen den beiden Zylindern 46 und 49 erfolgt entweder über die Umlenkwalzen bzw. -rolle 16 und 17, falls die Streicheinrichtung umgangen wird oder über die Umlenkwalzen 16, 18 und 19, um die Bahn der Streicheinrichtung zuzuführen. Es ist klar, daß es sich dabei vorzugsweise um Bahnen aus Papier oder Karton handelt.In the figure, only the
Die Streicheinrichtung besteht hier vorzugsweise aus zwei miteinander einen Preßspalt bildenden Preßwalzen oder Bahnführungswalzen 1 und 2. Ihnen ist jeweils ein Streichauftragswerk 3 bzw. 3' zugeordnet, die im wesentlichen gleich aufgebaut und spiegelbildlich angeordnet sind. Jedes Auftragswerk kann aus einer Streichklinge oder einem ähnlich aufgebauten Halter 5 für ein Bett 7 einer Rollrakel 6 sowie einer in Bewegungsrichtung der Mantelfläche der Preßwalzen vorgeschalteten Drosselplatte 8 bestehen, wobei zwischen diesen Teilen ein Auftragsraum für die Streichmasse oder allgemein Beschichtungsmasse gebildet ist, der vorzugsweise unter überatmosphärischem Druck steht, und dem die Streichmasse aus einer Beschichtungskammer 9 zuführbar ist. Der Streicheinrichtung sind Heizeinrichtungen 51, 52 und 53 nachgeschaltet, die auf Infrarotbasis oder mit Heißluft arbeiten können.The coating device here preferably consists of two press rolls or
Weitere Umlenkwalzen 21 - 23 führen dann die gestrichene und wieder vorgetrocknete Bahn den restlichen Trockenzylindern 49, 50 und folgende zu, damit die Bahn vollständig getrocknet wird.Further deflecting rollers 21-23 then feed the coated and pre-dried web to the remaining
Es ist klar, daß die Streicheinrichtung erst zu einem Zeitpunkt eingesetzt werden kann, wenn die Bahn bereits einen erheblichen Trockengehalt hat, der mindestens 75, vorzugsweise mindestens 80 % beträgt.It is clear that the coating device can only be used at a time when the web already has a considerable dry content, which is at least 75, preferably at least 80%.
Die Streicheinrichtung eignet sich dazu, die Bahn mit Leim zu imprägnieren oder auch mit Pigment zu beschichten. Ein Feuchtemeßgerät 40 ist zwischen die Leitrollen 16 und 18 eingebaut.The coating device is suitable for impregnating the web with glue or for coating it with pigment. A
Die Streicheinrichtung mit den Walzen 1 und 2 ist vorzugsweise auf einem höheren Maschinenflur bzw. einem eine Etage höher angeordneten Maschinenfundament angeordnet, als sich die Trockenzylindergruppe befindet.The coating device with the
Bei der erfindungsgemäßen Einrichtung hat man vorzugsweise einen sehr kurzen Weg bei der Umgehung der Streicheinrichtung, weil ja der Abstand zwischen den am zu der Streicheinrichtung führenden Zwischenraum angeordneten Trockenzylinder höchstens zwei Durchmesser derselben in der Länge - bezogen auf die Reihenanordnung der Trockenzylinder - beträgt.In the device according to the invention, there is preferably a very short way of bypassing the coating device, because the distance between the drying cylinders arranged at the space leading to the coating device is at most two diameters in length - based on the row arrangement of the drying cylinders.
Der große Vorteil der Anordnung ist auch, daß bei einem Bahnabriß - falls vorzugsweise an der Streichmaschine - die Bahn vor ihrem Neu-Einfädeln ohne weiteres in den Keller gefahren werden kann. Bei Betrieb ohne Streichmaschine verliert man bei einem Umbau nur die Heizleistung der zwei - nicht mehr vorhandenen - Trockenzylinder.The great advantage of the arrangement is that in the event of a web break - if preferably on the coating machine - the web can easily be driven into the basement before it is re-threaded. When operating without a coating machine, you only lose the heating power of the two - no longer available - drying cylinders during a conversion.
Claims (6)
- Final drying group with a device for selective treatment of moving webs, preferably of paper or cardboard, by spreading, pigmenting or gluing or omitting treatment of the moving web, and that in an intermediate space between two adjacent drying cylinders (46, 49) of the final drying group, which corresponds with a maximum of two diameters of the drying cylinders, is provided at least one diverting roller (16) for bridging the intermediate space in the event that the web is not treated by a spreading device (3, 3') arranged for spreading, pigmenting or gluing in this area of the web path, and at least one further diverting roller (18) is provided in this area by means of which the web is delivered to the spreading device (3, 3') from below, and the spreading device (3, 3') is essentially positioned above the intermediate space between the adjacent drying cylinders (46, 49).
- Final drying group according to Claim 1, characterised in that the spreading device is composed of two web-guiding rollers (1, 2) which are arranged in such a manner that the plane placed through their rotary axis deviates from the horizontal by no more than 20°, and a maximum one application mechanism (3, 3') of the casing surfaces is associated with each web-guiding roller (1, 2), so that the coating substance is initially transferred to the casing surfaces of the web-guiding rollers (1, 2) and from there to the web via a press gap which is established between both web-guiding rollers (1, 2).
- Final drying group according to Claim 1 or 2, characterised in that the spreading device (1, 2, 3, 3') is arranged at a higher level of a machine floor or foundation than the drying cylinder group.
- Final drying group according to one of Claims 1 to 3, characterised in that the drying cylinder group is arranged in double rows, and the two drying cylinders arranged on the intermediate space which is bridged by the at least one diverting roller (16) are an upper and a lower drying cylinder respectively.
- Final drying group according to Claim 4, characterised in that in the moving direction of the web on the intermediate space which is bridged by the at least one diverting roller (16) is initially arranged an upper drying cylinder (46) which is followed by a lower drying cylinder (49), and in the intermediate space are arranged two diverting rollers (16, 17) for transferring the web directly between the two drying cylinders.
- Final drying group according to one of Claims 1 to 4, characterised in that, as seen in the moving direction of the web, in front of the intermediate space which accommodates the at least one diverting roller (16) between the adjacent drying cylinders are additionally one lower drying cylinder and a following upper drying cylinder (46), and in the intermediate space are arranged two diverting rollers (16, 17) for transferring the web between the adjacent drying cylinders.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4313628A DE4313628A1 (en) | 1993-04-27 | 1993-04-27 | Paper web coating assembly - has a deflection roller between two drying cylinders to bridge the gap if web is not to be treated |
| DE4313628 | 1993-04-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0626478A1 EP0626478A1 (en) | 1994-11-30 |
| EP0626478B1 true EP0626478B1 (en) | 1997-05-14 |
Family
ID=6486401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94104915A Expired - Lifetime EP0626478B1 (en) | 1993-04-27 | 1994-03-29 | Apparatus for selectively treating a moving web |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5469636A (en) |
| EP (1) | EP0626478B1 (en) |
| JP (1) | JPH06316890A (en) |
| AT (1) | ATE153090T1 (en) |
| CA (1) | CA2122171A1 (en) |
| DE (2) | DE4313628A1 (en) |
| FI (1) | FI941756A (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4313628A1 (en) * | 1993-04-27 | 1993-09-30 | Voith Gmbh J M | Paper web coating assembly - has a deflection roller between two drying cylinders to bridge the gap if web is not to be treated |
| FI96338C (en) * | 1994-04-19 | 1996-06-10 | Valmet Corp | Method and apparatus for double-sided coating of a printing paper web |
| DE4420242A1 (en) * | 1994-06-10 | 1995-01-05 | Voith Gmbh J M | Equipment for the alternative treatment of a running web |
| FI98387C (en) * | 1995-02-01 | 1997-06-10 | Valmet Corp | Method for the production of surface-treated paper, in particular fine paper, and the dry end of a paper machine |
| US6126787A (en) | 1995-02-01 | 2000-10-03 | Valmet Corporation | Dry end of a paper machine |
| DE29712098U1 (en) * | 1997-07-09 | 1997-09-18 | Voith Sulzer Papiermasch Gmbh | Device for the optional treatment of a running web |
| DE29714193U1 (en) * | 1997-08-08 | 1997-10-16 | Voith Sulzer Papiermasch Gmbh | Device for coating a running web |
| DE19743246A1 (en) * | 1997-09-30 | 1999-04-01 | Voith Sulzer Papiertech Patent | Web coating assembly enabling direct and indirect coating e.g. of paper web |
| DE19824170A1 (en) * | 1998-05-29 | 1999-12-02 | Voith Sulzer Papiertech Patent | Device for moistening a material web |
| DE10106524A1 (en) * | 2001-02-13 | 2002-08-22 | Ficker Otto Ag | Production line for the manufacture of paper packaging |
| DE50311239D1 (en) * | 2002-12-19 | 2009-04-16 | Voith Patent Gmbh | Web treatment device |
| PT1733988E (en) * | 2005-06-16 | 2008-06-19 | Hunkeler Ag | Process and apparatus for the production of newspapers |
| US20070201933A1 (en) * | 2006-02-24 | 2007-08-30 | Park Namjeon | Feeding system for image forming machine |
| US20070199206A1 (en) * | 2006-02-24 | 2007-08-30 | Park Namjeon | Drying system for image forming machine |
| US20070200881A1 (en) * | 2006-02-24 | 2007-08-30 | Park Namjeon | Height adjustment system for image forming machine |
| DE102008041422A1 (en) * | 2008-08-21 | 2010-02-25 | Voith Patent Gmbh | Apparatus for producing coated paper, board or other fibrous webs with at least one thermosensitive layer and method for operating such a device |
| JP6908319B2 (en) * | 2019-01-11 | 2021-07-21 | 株式会社クリエイティブコーティングス | Paste application device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1290111A (en) * | 1957-03-25 | 1962-04-13 | Film coated paper and method of manufacture | |
| US3908071A (en) * | 1972-10-10 | 1975-09-23 | Clupak Inc | External sizing of extensible paper |
| CA997632A (en) * | 1975-11-07 | 1976-09-28 | Rudy L. Gagne | Method and apparatus for coating a substrate with plastic |
| US5291666A (en) * | 1993-04-23 | 1994-03-08 | International Paper Company | Apparatus for drying roll material |
| DE4313628A1 (en) * | 1993-04-27 | 1993-09-30 | Voith Gmbh J M | Paper web coating assembly - has a deflection roller between two drying cylinders to bridge the gap if web is not to be treated |
-
1993
- 1993-04-27 DE DE4313628A patent/DE4313628A1/en not_active Withdrawn
-
1994
- 1994-03-29 DE DE59402714T patent/DE59402714D1/en not_active Expired - Fee Related
- 1994-03-29 AT AT94104915T patent/ATE153090T1/en active
- 1994-03-29 EP EP94104915A patent/EP0626478B1/en not_active Expired - Lifetime
- 1994-04-15 FI FI941756A patent/FI941756A/en unknown
- 1994-04-18 US US08/229,173 patent/US5469636A/en not_active Expired - Fee Related
- 1994-04-26 CA CA002122171A patent/CA2122171A1/en not_active Abandoned
- 1994-04-27 JP JP6090124A patent/JPH06316890A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0626478A1 (en) | 1994-11-30 |
| ATE153090T1 (en) | 1997-05-15 |
| DE4313628A1 (en) | 1993-09-30 |
| FI941756A (en) | 1994-10-28 |
| US5469636A (en) | 1995-11-28 |
| DE59402714D1 (en) | 1997-06-19 |
| FI941756A0 (en) | 1994-04-15 |
| JPH06316890A (en) | 1994-11-15 |
| CA2122171A1 (en) | 1994-10-28 |
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