EP0812257A1 - Process and device for heating a moving web, in particular a corrugated cardboard web - Google Patents

Process and device for heating a moving web, in particular a corrugated cardboard web

Info

Publication number
EP0812257A1
EP0812257A1 EP96901693A EP96901693A EP0812257A1 EP 0812257 A1 EP0812257 A1 EP 0812257A1 EP 96901693 A EP96901693 A EP 96901693A EP 96901693 A EP96901693 A EP 96901693A EP 0812257 A1 EP0812257 A1 EP 0812257A1
Authority
EP
European Patent Office
Prior art keywords
web
heating
heating surface
drum
heat
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
Application number
EP96901693A
Other languages
German (de)
French (fr)
Other versions
EP0812257B1 (en
Inventor
Hans Mosburger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BHS Corrugated Maschinen und Anlagenbau GmbH
Original Assignee
BHS Corrugated Maschinen und Anlagenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BHS Corrugated Maschinen und Anlagenbau GmbH filed Critical BHS Corrugated Maschinen und Anlagenbau GmbH
Publication of EP0812257A1 publication Critical patent/EP0812257A1/en
Application granted granted Critical
Publication of EP0812257B1 publication Critical patent/EP0812257B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B31F1/285—Heating or drying equipment

Definitions

  • the invention relates to a method for heating a moving web, in particular corrugated cardboard web according to the preamble of claim 1 and a preheater according to the preamble of claim 5.
  • a preheater for a corrugated cardboard web is known from DE 23 02 449.
  • This known preheater has a rotatably driven heating drum.
  • the web is fed to the heating drum via a fixed inlet and discharged from it via a fixed outlet.
  • a deflection roller for the web is assigned to the heating drum and can be pivoted concentrically about the central axis of the heating drum.
  • the swivel angle determines the contact surface of the web on the heating drum and thus the amount of heat to be transferred.
  • the swiveled deflection roller takes the web with it and moves it over the heating drum, the wrap angle being adjustable. The heat is transferred from the heating surface of the drum to the adjacent outer layer of the web.
  • a second roller is usually provided in the circumferential direction of the heating drum.
  • these rollers are at a distance of 120 mm from the rotating heating drum.
  • the disadvantage is that the web can only wrap around the heating drum at a maximum angle of approximately 270 °.
  • the web is only heated on one side by the heating drum, as a result of which the web is heated unevenly.
  • the glue applied in the subsequent gluing unit will not start up sufficiently quickly due to the only one-sided web heating, i.e. has a certain adhesive effect.
  • the invention has for its object to provide a method and an apparatus for heating a moving web, in particular corrugated cardboard web, whereby it is possible to enlarge the heating surface with not increasing space requirements and with reduced construction costs. At the same time, an increased heat supply and faster heat transfer to the glue application point should be made possible.
  • the invention eliminates the danger of being drawn in between the deflection rollers and the heating drum, so that the legally prescribed safety distance of the deflection roller from the heating drum need not be observed.
  • the effective heating surface according to the invention is increased with a reduced space requirement and reduced expenditure.
  • the possible control range for heat transfer is expanded.
  • the maximum wrap angle of the heating drum can also be increased by the web.
  • the rotatable heating drum is assigned a circular segment-shaped heating surface which is connected to the deflecting roller, so that it can be moved concentrically to the heating drum, with the other outer side of the web being guided over this circular segment-shaped heating surface becomes.
  • FIG. 1 is a partially sectioned schematic side view of a preheater according to the invention.
  • Fig. 2 is a view of the preheater as in Fig.l with maximum wrap angle of the preheating drum through the web.
  • the preheater 1 has a heated drum 2 with a smooth surface. This can e.g. be heated inside by steam or in some other way.
  • the drum 2 can be driven in the direction indicated by the arrow. But it can also be rotatably mounted.
  • the drum jacket 3 is made of a good heat-conducting material, preferably steel.
  • the drum 2 is supported on both sides in bearing plates 4.
  • Lane 5 e.g. a cover sheet for a one-sided corrugated cardboard sheet runs over a feed 7 which e.g. is designed as a fixed pair of rollers, towards the drum 2 in the direction indicated by the arrow.
  • the web 5 lies against the heated drum jacket 3 and wraps it around with the smallest possible wrap angle, e.g. 72 °.
  • the web 5 runs out over a deflection surface 10, e.g. a rotatable deflection roller 11 out.
  • the web 5 runs from the roller 11 to a fixed discharge 12.
  • the web 5 runs e.g. a single-sided corrugated cardboard machine 20.
  • the guide roller 21 can cooperate with the pressure roller 22.
  • the corrugating roller 23 interacts with this, on the corrugated paper web 24 of which the glue transfer roller 25 transfers the glue from the glue unit, not shown, which is arranged to a foot 17 with insertion guide 18.
  • the outlet 12 can also be designed in a different way.
  • a heating surface 13 is connected to the deflection surface 10 and is formed by a heatable circular segment 14 made of metal, which is arranged concentrically to the central axis of the drum 2.
  • the heating surface 13 and the deflection surface 10, which is designed as a deflection roller 11 in the specific exemplary embodiment, are arranged together to be pivotable about the central axis of the drum 2.
  • the deflecting roller 10 and the heating surface 13 can be attached to circular disks 30 which can be rotated about the central axis of the heating drum 2 and which are actuated by means of an adjusting device, e.g. are adjustable by means of chains.
  • an adjusting device e.g. are adjustable by means of chains.
  • Fig. 1 the deflection roller 11 with heating surface 13 is in a position with the smallest wrap angle, e.g. 72 °.
  • the web 5 does not run over the heating surface 13.
  • the deflecting surface 10 with the heating surface 13 pivoted clockwise around the central axis of the drum 2.
  • the size of the swivel angle depends on the heat to be transferred into the web 5. The swivel angle can be done manually or automatically, e.g. depending on the web moisture, web temperature and / or web speed.
  • the maximum swivel angle is limited by the incoming web 5.
  • the heating surface 13 can be provided with meandering heating channels 15 or electrical heating wires.
  • a hot medium e.g. a heating steam can be led.
  • the roller 11 is rotatable as a deflecting surface 10. If necessary, it can also be driven.
  • the detachable foot 17 of the side bearing plates 4 is arranged as close as possible to the imaginary circular path of the circular segment 14.
  • the foot 17 can e.g. directly take up an insertable glue mechanism 17 or the like, not shown, arranged underneath.
  • the heated drum 2 and the heating surface 13 can thus be positioned very close to the glue transfer point on the circumference of the glue application roller 25. This avoids unnecessary heat loss during the movement of the web 5 from the preheater 1 to the glue transfer point. The space requirement is reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Paper (AREA)

Abstract

According to a process for heating a moving web, in particular a corrugated cardboard web, heat is supplied both to a first outer side of the moving web (5) and to the other outer side of said web. A pre-heater (1) with a first heating surface (3) associated to an adjustable deflection roller is linked to a second heating surface (13) linked to the deflection roller (10). The web (5) is moved over the second heating surface in contact with its second outer side.

Description

Verfahren und Vorrichtung zum Beheizen einer bewegten Bahn, insbesondere Wellpappenbahn Method and device for heating a moving web, in particular corrugated cardboard web
Die Erfindung betrifft ein Verfahren zum Beheizen einer bewegten Bahn, insbesondere Wellpappenbahn nach dem Oberbegriff des Pa¬ tentanspruchs 1 sowie einen Vorheizer nach dem Oberbegriff des Patentanspruchs 5.The invention relates to a method for heating a moving web, in particular corrugated cardboard web according to the preamble of claim 1 and a preheater according to the preamble of claim 5.
Ein Vorheizer für eine Wellpappenbahn ist aus der DE 23 02 449 bekannt. Dieser bekannte Vorheizer besitzt eine rotierbar ange¬ triebene Heiztrommel. Die Bahn wird über einen raumfesten Zulauf der Heiztrommel zugeführt und von dieser über einen raumfesten Ablauf abgeführt. Der Heiztrommel ist eine Umlenkwalze für die Bahn zugeordnet, die konzentrisch um die Mittelachse der Heiz¬ trommel schwenkbar ist. Der Schwenkwinkel bestimmt die Anlage¬ fläche der Bahn an der Heiztrommel und damit die zu übertragende Wärmemenge. Die geschwenkte Umlenkwalze nimmt die Bahn mit und bewegt sie über die Heiztrommel, wobei der Umschlingungswinkel einstellbar ist. Hierbei erfolgt die Wärmeübertragung von der Heizfläche der Trommel in die angrenzende Außenschicht der Bahn. Um eine Berührung der zulaufenden Bahn mit der ablaufenden Bahn zu verhindern, ist üblicherweise in Umfangsrichtung der Heiz¬ trommel eine zweite Walze vorgesehen. Diese Walzen besitzen aus Sicherheitsgründen einen Abstand von 120 mm zur drehenden Heiz¬ trommel. Nachteilig ist, daß die Bahn die Heiztrommel nur mit einem maximalen Winkel von ca. 270° umschlingen kann. Ferner wird die Bahn von der Heiztrommel nur einseitig beheizt, wodurch eine ungleichmäßige Aufheizung der Bahn erfolgt. Auch besteht die Gefahr, daß bei größeren Bahngeschwindigkeiten der im an¬ schließenden Leimwerk aufgebrachte Leim infolge der nur einsei¬ tigen Bahnbeheizung nicht genügend rasch anspringt, d.h. eine gewisse Klebewirkung entfaltet.A preheater for a corrugated cardboard web is known from DE 23 02 449. This known preheater has a rotatably driven heating drum. The web is fed to the heating drum via a fixed inlet and discharged from it via a fixed outlet. A deflection roller for the web is assigned to the heating drum and can be pivoted concentrically about the central axis of the heating drum. The swivel angle determines the contact surface of the web on the heating drum and thus the amount of heat to be transferred. The swiveled deflection roller takes the web with it and moves it over the heating drum, the wrap angle being adjustable. The heat is transferred from the heating surface of the drum to the adjacent outer layer of the web. In order to prevent the incoming web from touching the outgoing web, a second roller is usually provided in the circumferential direction of the heating drum. For safety reasons, these rollers are at a distance of 120 mm from the rotating heating drum. The disadvantage is that the web can only wrap around the heating drum at a maximum angle of approximately 270 °. Furthermore, the web is only heated on one side by the heating drum, as a result of which the web is heated unevenly. There is also the risk that at higher web speeds the glue applied in the subsequent gluing unit will not start up sufficiently quickly due to the only one-sided web heating, i.e. has a certain adhesive effect.
ERSATZBLATT Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zum Beheizen einer bewegten Bahn, insbesondere Well¬ pappenbahn zu schaffen, wodurch es bei nicht erhöhtem Raumbedarf und bei verringertem Bauaufwand gelingt, die Heizfläche zu ver¬ größern. Gleichzeitig soll eine erhöhte Wärmezufuhr und raschere Wärmeübertragung zur Leimauftragsstelle ermöglicht werden.REPLACEMENT LEAF The invention has for its object to provide a method and an apparatus for heating a moving web, in particular corrugated cardboard web, whereby it is possible to enlarge the heating surface with not increasing space requirements and with reduced construction costs. At the same time, an increased heat supply and faster heat transfer to the glue application point should be made possible.
Die Erfindung löst diese Aufgabe mit den kennzeichnenden Merkma¬ len der Patentansprüche 1 bzw. 5.The invention solves this problem with the characterizing features of claims 1 and 5, respectively.
Die Erfindung beseitigt zwischen Umlenkwalzen und Heiztrommel die Einzugsgefahr, so daß der gesetzlich vorgeschriebene Sicher¬ heitsabstand der Umlenkwalze zur Heiztrommel nicht zu beachten ist. Außerdem wird die wirksame Heizfläche nach der Erfindung bei verringertem Raumbedarf und verringertem Aufwand erhöht. Schließlich wird der mögliche Regelbereich für die Wärmeüber¬ tragung erweitert. Auch kann der maximale Umschlingungswinkel der Heiztrommel durch die Bahn vergrößert werden.The invention eliminates the danger of being drawn in between the deflection rollers and the heating drum, so that the legally prescribed safety distance of the deflection roller from the heating drum need not be observed. In addition, the effective heating surface according to the invention is increased with a reduced space requirement and reduced expenditure. Finally, the possible control range for heat transfer is expanded. The maximum wrap angle of the heating drum can also be increased by the web.
Nach einer Ausgestaltung der Erfindung ist bei einem Vorheizer an sich bekannter Bauart der rotierbaren Heiztrommel eine kreis- segmentförmige Heizfläche zugeordnet, die mit der Umlenkwalze verbunden ist, so daß sie konzentrisch zur Heiztrommel bewegt werden kann, wobei über diese kreissegmentförmige Heizfläche die andere Bahnaußenseite anliegend geführt wird.According to one embodiment of the invention, in the case of a preheater of known design, the rotatable heating drum is assigned a circular segment-shaped heating surface which is connected to the deflecting roller, so that it can be moved concentrically to the heating drum, with the other outer side of the web being guided over this circular segment-shaped heating surface becomes.
Weitere Ausgestaltungen der Erfindung ergeben sich aus den Un¬ teransprüchen.Further refinements of the invention result from the subclaims.
Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. In der Zeichnung zeigen:The invention is explained in more detail below with reference to an embodiment shown in the drawing. The drawing shows:
Fig. 1 eine teilweise geschnittene schematische Seitenan¬ sicht eines Vorheizers nach der Erfindung mit ge-1 is a partially sectioned schematic side view of a preheater according to the invention with
ERSAT2BLAT ringstem Umschlingungswinkel der Heiztroπunel durch die Bahn in Verbindung mit einer einseitigen Well¬ pappenmaschine undERSAT2BLAT The smallest wrap angle of the heating drum through the web in connection with a one-sided corrugated cardboard machine and
Fig. 2 eine Ansicht des Vorheizers wie in Fig.l mit maxi¬ malem Umschlingungswinkel der Vorheiztrommel durch die Bahn.Fig. 2 is a view of the preheater as in Fig.l with maximum wrap angle of the preheating drum through the web.
Der Vorheizer 1 nach den Fig. 1 und 2 weist eine beheizte Trom- mel 2 mit glatter Oberfläche auf. Diese kann z.B. durch Dampf oder auf sonstige Weise innen beheizt sein. Die Trommel 2 kann in der angegebenen Pfeilrichtung angetrieben sein. Sie kann aber auch nur drehbar gelagert sein. Der Trommelmantel 3 ist aus gut wärmeleitendem Material, vorzugsweise aus Stahl. Die Trommel 2 ist beiderseits in Lagerschildern 4 gelagert.The preheater 1 according to FIGS. 1 and 2 has a heated drum 2 with a smooth surface. This can e.g. be heated inside by steam or in some other way. The drum 2 can be driven in the direction indicated by the arrow. But it can also be rotatably mounted. The drum jacket 3 is made of a good heat-conducting material, preferably steel. The drum 2 is supported on both sides in bearing plates 4.
Die Bahn 5, z.B. eine Deckbahn für eine einseitige Wellpappen¬ bahn, läuft über eine Zuführung 7, die z.B. als raumfestes Wal¬ zenpaar ausgebildet ist, der Trommel 2 in der angegebenen Pfeil- richtung zu.Lane 5, e.g. a cover sheet for a one-sided corrugated cardboard sheet runs over a feed 7 which e.g. is designed as a fixed pair of rollers, towards the drum 2 in the direction indicated by the arrow.
Nach Fig. 1 legt sich die Bahn 5 an den beheizten Trommelmantel 3 an und umschlingt diesen mit dem kleinstmöglichen Umschlin¬ gungswinkel, z.B. 72°.According to FIG. 1, the web 5 lies against the heated drum jacket 3 and wraps it around with the smallest possible wrap angle, e.g. 72 °.
Auslaufend ist die Bahn 5 über eine Umlenkfläche 10, z.B. eine drehbare Umlenkwalze 11, geführt. Von der Walze 11 läuft die Bahn 5 weiter zu einer raumfesten Abführung 12. Nach Fig. 1 läuft die Bahn 5 z.B. einer einseitigen Wellpappenmaschine 20 zu. Hierbei kann die Leitwalze 21 mit der Anpreßwalze 22 zusam¬ menarbeiten. Mit dieser wirkt wie üblich die Riffelwalze 23 zusammen, auf deren gewellte Papierbahn 24 die Leimübertrags¬ walze 25 den Leim aus dem nicht dargestellten Leimwerk über¬ trägt, welche zu einem Fuß 17 mit Einschubführung 18 angeordnet ist. Selbstverständlich kann die Abführung 12 auch in anderer Weise ausgebildet sein.The web 5 runs out over a deflection surface 10, e.g. a rotatable deflection roller 11 out. The web 5 runs from the roller 11 to a fixed discharge 12. According to FIG. 1, the web 5 runs e.g. a single-sided corrugated cardboard machine 20. Here, the guide roller 21 can cooperate with the pressure roller 22. As usual, the corrugating roller 23 interacts with this, on the corrugated paper web 24 of which the glue transfer roller 25 transfers the glue from the glue unit, not shown, which is arranged to a foot 17 with insertion guide 18. Of course, the outlet 12 can also be designed in a different way.
ERSATZBLATT Mit der Umlenkfläche 10 ist eine Heizfläche 13 verbunden, die von einem beheizbaren Kreissegment 14 aus Metall gebildet ist, welches konzentrisch zur Mittelachse der Trommel 2 angeordnet ist.REPLACEMENT LEAF A heating surface 13 is connected to the deflection surface 10 and is formed by a heatable circular segment 14 made of metal, which is arranged concentrically to the central axis of the drum 2.
Die Heizfläche 13 und die im konkreten Ausführungsbeispiel als Umlenkwalze 11 ausgebildete Umlenkfläche 10 sind zusammen um die Mittelachse der Trommel 2 schwenkbar angeordnet.The heating surface 13 and the deflection surface 10, which is designed as a deflection roller 11 in the specific exemplary embodiment, are arranged together to be pivotable about the central axis of the drum 2.
Hierfür kann die Umlenkwalze 10 und die Heizfläche 13 an kreis¬ förmigen, um die Mittelachse der Heiztrommel 2 drehbare Scheiben 30 befestigt sein, die mittels einer Stelleinrichtung, z.B. mittels Ketten, verstellbar sind.For this purpose, the deflecting roller 10 and the heating surface 13 can be attached to circular disks 30 which can be rotated about the central axis of the heating drum 2 and which are actuated by means of an adjusting device, e.g. are adjustable by means of chains.
In Fig. 1 befindet sich die Umlenkwalze 11 mit Heizfläche 13 in einer Stellung mit kleinstem Umschlingungswinkel, z.B. 72°. Die Bahn 5 verläuft nicht über die Heizfläche 13.In Fig. 1 the deflection roller 11 with heating surface 13 is in a position with the smallest wrap angle, e.g. 72 °. The web 5 does not run over the heating surface 13.
Soll neben der einen Außenseite der Bahn 5 (bei einer einseiti- gen Wellpappenbahn die gewellte Bahn 7') auch die andere Außen¬ seite der Bahn (bei einer einseitigen Wellpappenbahn die ebene Bahn 6) erhitzt werden, so wird, wie aus Fig. 2 ersichtlich, die Umlenkfläche 10 mit der Heizfläche 13 im Uhrzeigersinn um die Mittelachse der Trommel 2 verεchwenkt. Die Größe des Schwenkwin- kels hängt dabei von der in die Bahn 5 zu übertragenden Wärme ab. Der Schwenkwinkel kann von Hand oder selbsttätig, z.B. ab¬ hängig von Bahnfeuchte, Bahntemperatur und/oder Bahngeschwin¬ digkeit, eingestellt werden.If, in addition to the one outer side of the web 5 (in the case of a one-sided corrugated cardboard web, the corrugated web 7 ') and the other outer side of the web (in the case of a one-sided corrugated cardboard web, the flat web 6) is also to be heated, as shown in FIG can be seen, the deflecting surface 10 with the heating surface 13 pivoted clockwise around the central axis of the drum 2. The size of the swivel angle depends on the heat to be transferred into the web 5. The swivel angle can be done manually or automatically, e.g. depending on the web moisture, web temperature and / or web speed.
Der maximale Schwenkwinkel wird dabei durch die zulaufende Bahn 5 begrenzt.The maximum swivel angle is limited by the incoming web 5.
Durch das Verschwenken der Umlenkfläche 10 mit Heizfläche 13 um¬ schlingt die Bahn 5 mehr und mehr die Trommel 2 und verläuft, angedrückt an die Heizfläche 13, im Gegensinn zurück. Nach demBy pivoting the deflection surface 10 with the heating surface 13, the web 5 wraps more and more around the drum 2 and, when pressed against the heating surface 13, runs back in the opposite direction. After this
ERSATZBLATT Verlassen der Heizfläche 13 verläuft die Bahn 5 zu der Abführung 12.REPLACEMENT LEAF Leaving the heating surface 13, the web 5 runs to the outlet 12.
Die Heizfläche 13 kann mit meanderformigen Heizkanälen 15 oder elektrischen Heizdrähten versehen sein. Durch die Heizkanäle kann ein heißes Medium, z.B. ein Heizdampf geführt werden.The heating surface 13 can be provided with meandering heating channels 15 or electrical heating wires. A hot medium, e.g. a heating steam can be led.
Die Walze 11 ist als Umlenkfläche 10 drehbar. Sie kann ggfs. auch angetrieben sein.The roller 11 is rotatable as a deflecting surface 10. If necessary, it can also be driven.
Der abtrennbare Fuß 17 der seitlichen Lagerschilder 4 ist mög¬ lichst dicht an der gedachten Kreisbahn des Kreissegmentes 14 angeordnet. Der Fuß 17 kann z.B. direkt ein darunter angeord¬ netes einschiebbares nicht dargestelltes Leimwerk 17 oder der- gleichen aufnehmen. Damit können die beheizte Trommel 2 und die Heizfläche 13 sehr nahe an die Leimübertragsstelle am Umfang der Leimauftragswalze 25 positioniert werden. Hierdurch wird ein unnötiger Wärmeverlust während der Bewegung der Bahn 5 vom Vor¬ heizer 1 zur Leimübertragsstelle vermieden. Der Raumbedarf wird verringert.The detachable foot 17 of the side bearing plates 4 is arranged as close as possible to the imaginary circular path of the circular segment 14. The foot 17 can e.g. directly take up an insertable glue mechanism 17 or the like, not shown, arranged underneath. The heated drum 2 and the heating surface 13 can thus be positioned very close to the glue transfer point on the circumference of the glue application roller 25. This avoids unnecessary heat loss during the movement of the web 5 from the preheater 1 to the glue transfer point. The space requirement is reduced.
R ATZBLATT R ATZBLATT

Claims

Patentansprüche claims
1. Verfahren zum Beheizen einer bewegten Bahn, insbesondere Wellpappenbahn, bei dem der einen Außenseite der bewegten Bahn Wärme zuge¬ führt wird, dadurch gekennzeichnet, daß auch der anderen Außenseite der Bahn (5) Wärme zugeführt wird.1. A method for heating a moving web, in particular corrugated cardboard web, in which heat is supplied to one outside of the moving web, characterized in that heat is also supplied to the other outside of the web (5).
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Zuführung der Wärme über Heizflächen (3, 13) durch2. The method according to claim 1, characterized in that the supply of heat via heating surfaces (3, 13) by
Wärmeleitung erfolgt.Heat conduction takes place.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die wirksamen Flächen der Heizflächen (3, 13) verändert werden.3. The method according to claim 2, characterized in that the effective areas of the heating surfaces (3, 13) are changed.
4. Verfahren nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Bahn (5) von einer ersten Heizfläche (3) zu einer zweiten Heizfläche (13) umgelenkt wird und eine Heizfläche (13) relativ zur anderen (3) bewegt werden kann, wobei Zulauf (7) und Ablauf (12) der Bahn raumfest gehalten werden.4. The method according to claims 1 to 3, characterized in that the web (5) is deflected from a first heating surface (3) to a second heating surface (13) and one heating surface (13) can be moved relative to the other (3) , Inlet (7) and outlet (12) of the web are kept spatially fixed.
ERSATZBLATT Vorheizer zur Ausführung des Verfahrens nach den Ansprüchen 1 bis 4, mit einer ersten Heizfläche für die umschlingende Bahn, der eine verstellbare Umlenkwalze für die Bahn zugeordnet ist und Bahnzulauf und Bahnablauf raumfest sind, dadurch gekennzeichnet, daß mit der Umlenkwalze (10) eine zweite Heizfläche (13) ver¬ bunden ist, über die die Bahn (5) mit ihrer anderen Außen¬ seite geführt ist.REPLACEMENT LEAF Preheater for carrying out the method according to claims 1 to 4, with a first heating surface for the looping web, to which an adjustable deflection roller for the web is assigned and web inlet and web outlet are spatially fixed, characterized in that with the deflection roller (10) a second heating surface (13) is connected, via which the web (5) is guided with its other outer side.
6. Vorheizer nach Anspruch 5, dadurch gekennzeichnet, daß die erste Heizfläche (3) eine rotierbare Trommel (2) ist, daß die Umlenkwalze (11) mit einer kreissegmentförmigen zwei- ten Heizfläche (13) verbunden ist, die konzentrisch zur Trom¬ mel einstellbar bewegbar ist und daß die andere Bahnaußen¬ seite über diese zweite Heizfläche geführt ist.6. Preheater according to claim 5, characterized in that the first heating surface (3) is a rotatable drum (2), that the deflecting roller (11) is connected to a circular segment-shaped second heating surface (13) which is concentric with the drum is adjustable and that the other side of the web is guided over this second heating surface.
7. Vorheizer nach Anspruch 6, dadurch gekennzeichnet, daß nahe der Kreisbahn der zweiten Heizfläche (13) ein Fuß (17) zum Verbinden mit weiteren Anlageteilen ausgebildet ist.7. preheater according to claim 6, characterized in that near the circular path of the second heating surface (13) a foot (17) is formed for connecting to other system parts.
ERSATZBLATT REPLACEMENT LEAF
EP96901693A 1995-02-27 1996-02-01 Process and device for heating a moving web, in particular a corrugated cardboard web Expired - Lifetime EP0812257B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19506779 1995-02-27
DE19506779A DE19506779A1 (en) 1995-02-27 1995-02-27 Method and device for heating a moving web, in particular corrugated cardboard web
PCT/DE1996/000157 WO1996026829A1 (en) 1995-02-27 1996-02-01 Process and device for heating a moving web, in particular a corrugated cardboard web

Publications (2)

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EP0812257A1 true EP0812257A1 (en) 1997-12-17
EP0812257B1 EP0812257B1 (en) 1998-09-23

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EP96901693A Expired - Lifetime EP0812257B1 (en) 1995-02-27 1996-02-01 Process and device for heating a moving web, in particular a corrugated cardboard web

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US (1) US5916409A (en)
EP (1) EP0812257B1 (en)
DE (2) DE19506779A1 (en)
WO (1) WO1996026829A1 (en)

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US5837974A (en) * 1996-10-16 1998-11-17 Interfic, Inc. Corrugated paperboard manufacturing apparatus with board profile monitoring and related methods
US5902502A (en) * 1996-10-16 1999-05-11 Interfic, Inc. Corrugated paperboard manufacturing apparatus and related methods
DE19757474A1 (en) * 1997-12-23 1999-06-24 Voith Sulzer Papiertech Patent Paper calender
DE19816931C2 (en) * 1998-04-16 2001-12-13 Bhs Corr Masch & Anlagenbau Heating device for a moving material web, in particular preheaters for a corrugated cardboard system
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Also Published As

Publication number Publication date
WO1996026829A1 (en) 1996-09-06
US5916409A (en) 1999-06-29
EP0812257B1 (en) 1998-09-23
DE19506779A1 (en) 1996-08-29
DE59600602D1 (en) 1998-10-29

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