EP0532455B1 - Apparatus for calendering and/or laminating sheet-like textile materials - Google Patents

Apparatus for calendering and/or laminating sheet-like textile materials Download PDF

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Publication number
EP0532455B1
EP0532455B1 EP92810555A EP92810555A EP0532455B1 EP 0532455 B1 EP0532455 B1 EP 0532455B1 EP 92810555 A EP92810555 A EP 92810555A EP 92810555 A EP92810555 A EP 92810555A EP 0532455 B1 EP0532455 B1 EP 0532455B1
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EP
European Patent Office
Prior art keywords
pressure
roller
belt
web
heating roller
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EP92810555A
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German (de)
French (fr)
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EP0532455A1 (en
Inventor
Josef Schaetti
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Schaetti and Co
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Schaetti and Co
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
    • D06B15/02—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours by squeezing rollers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C15/00—Calendering, pressing, ironing, glossing or glazing textile fabrics
    • D06C15/02—Calendering, pressing, ironing, glossing or glazing textile fabrics between co-operating press or calender rolls
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00—Heating or cooling textile fabrics

Definitions

  • the present invention relates to a device for calendering and / or laminating sheet-like materials, by means of heat sealing, with at least one pressure calender roll, a temperature-controlled heating roll arranged vertically underneath, at least one laminating development, deflection rolls and a take-up roll, the temperature-controlled heating roll being of considerably greater scope than that Press calender roll has.
  • the invention also relates to the use of such a device.
  • Devices of this type are known. They are often associated with powder coating systems, which comprise either a powder spot coating, a powder spreading or a paste spot coating machine, as well as a downstream furnace in the form of a heating duct.
  • powder coating systems which comprise either a powder spot coating, a powder spreading or a paste spot coating machine, as well as a downstream furnace in the form of a heating duct.
  • the powder or paste-coated material web comes from the coating system while the powder or paste sintered thereon is still soft and runs between two calender rolls, the powder applied being flattened, that is to say calendered and then via one or more deflection and Cooling rollers for winding.
  • the result is usually flawless and is influenced by the speed at which the coated material web is guided and the contact pressure between the two calender rolls.
  • a calender is known in which instead of one, two or three pressure calender rolls are provided, which are looped around by a pressure belt.
  • This device which is arranged above the inlet nip, replaces a single pressure calender roller and increases the pressure time while maintaining a high pressure
  • the sheet-like materials can be textile, woven or non-woven sheets made of natural or synthetic fibers, nonwovens, foam rubber, plastic foils, natural or synthetic leather, furs or artificial furs or the like. Many of these materials are extremely sensitive to temperature and pressure. These conditions are often in direct contradiction to the requirements for a perfect heat-sealed connection. The applicant brings a large number of different powders onto the market, but certain minimum values should not be undercut.
  • the most common plastics for powder and paste coating are polyamides, polyesters, high and low pressure polyethylenes, and ethylene vinyl acetate copolymers. According to the Kofler measurement, their melting point varies between around 60 ° and 140 ° Celsius.
  • the conditions for perfect heat sealing are between 100 ° and 180 ° Celsius, at a pressure of 200-4000 gr / cm 2 and a time of 4-30 seconds. While a patch-wise, discontinuous heat sealing on an electric press can achieve all these conditions perfectly, this could only be achieved poorly or not at all continuously, as is to be done on a calendering device, because the time between the two calender rolls is only a fraction of a second matters. This task is particularly difficult if the device for calendering and / or laminating is connected directly to a powder or paste coating system.
  • the conveying speed of the web-shaped material is specified here by the coating system and is usually between 15-40 m / min.
  • the device 10 according to the invention for calendering and / or laminating web-shaped materials by means of heat sealing is connected downstream of a powder coating system.
  • the powder coating system itself is not part of this invention.
  • the web-like material to be calendered or laminated comes from a roll 1.
  • the web-like material is passed through a powder dot coating machine 2.
  • the web-shaped material then passes through a powder scatter coating machine 3.
  • the powder point coating machine and the powder scatter coating machine 3 are of course only used alternatively.
  • the now coated web 4 then passes into a sintering furnace 5 through which the coated web material is passed.
  • the now coated sheet-like material 4 can then either only be calendered or coated and laminated with a first lamination layer or additionally processed with a second lamination sheet in one operation to form a three-layer sheet-like material. This will be discussed in more detail below.
  • the actual calendering and laminating device 10 is arranged in a machine housing 20.
  • This consists of a welded construction with corresponding load-bearing side walls.
  • a large number of rollers are mounted between the two side cheeks of the machine housing 20.
  • the pressure calender roll 11 which is usually a steel roll which, if necessary, is water-cooled and / or teflonized can be.
  • a considerably larger roller, the so-called heating roller 12 is arranged vertically below it.
  • the heating roller 12 is provided with heating means by means of which the temperature in the roller 12 can be guided precisely.
  • the circumference of the heating roller 12 should be as large as possible, preferably a circumference of 500-1500mm.
  • a pressure belt 13 is arranged around the heating roller 12 and extends over more than half the circumference.
  • the endless pressure belt 13 is guided over a plurality of belt guide rollers 14.
  • the either calendered web 8 or laminated web 9 is then rolled up on the reel 17.
  • the calender roll 11, with the heating roll 12 opposite it and with the pressure belt 13 guided around the heating roll 12, is shown separately, the size relationships here more closely corresponding to reality.
  • the belt guide roller 18 lying at the foremost with respect to the inlet direction of the web-shaped materials to be laminated is realized as a tension roller. By means of it, the pressure belt 13 is always kept under tension.
  • the tape guide roller at the other deflecting end of the endless pressure belt 13 is designed as a press roller 19. Between the two outermost belt guide rollers there are several further rollers with the same diameter as the two belt guide rollers mentioned above. These are evenly distributed over the circumference.
  • these tape guide rollers are alternately designed as fixed rollers 14 and as adjustable press rollers 19. In this way, a uniform pressure and an increased specific pressure can be alternately realized along the circumference of the heating roller 12.
  • the pressure belt 13 can advantageously be produced from a silicone-coated glass fiber fabric.
  • a silicone-coated glass fiber fabric is as distortion-free as possible and protects the material of the webs to be laminated. This also reduces the risk that powder particles still reaching the pressure belt will adhere to the pressure belt.
  • Adhesion of still relatively soft plastic powder to the pressure calender roller 11 is much more problematic. Therefore, the pressure calender roller 11 is preferably provided with a non-stick coating.
  • FIG. 3 shows the simplest form of use, namely calendering.
  • the web-shaped material provided with a coating is here being fed straight into the inlet nip between the pressure calender roll 11 and the heating roll 12.
  • the coated side of the web 4 lies on top and comes into contact only with the pressure calender roller 11, which should be cooled and / or teflonized.
  • the web-shaped Material 4 while still hot, comes directly from the sintering furnace 5 to the calendering device 10.
  • the material sintered onto the web-like material is still relatively soft.
  • the individual plastic particles of the powder coating are pressed flat under the pressure calender roller, which is provided with a non-stick coating as described.
  • the finished calendered material web 8 thus comes out from behind the pressure calender roll 11 and can then be rolled up on the winding 17.
  • the pressure calender roller 11 is cooled so that the pressure calender roller 11 does not heat up too much in continuous operation.
  • a powder-coated material web 4 is introduced into the inlet nip between the pressure calender roll 11 and the heating roll 12.
  • an uncoated material web is fed from a first lamination processing 15 as the first lamination layer 6 via the pressure calender roller 11 to the coated web 4.
  • the two material webs 4 and 6, which lie snugly one on top of the other, are then jointly guided between the pressure belt 13 and the heating roller 12 by as much as possible of its circumference.
  • heat is conducted from the heating roller 12 onto the material to be laminated and, at the same time, pressure is exerted over a long period of time.
  • the pressure will each briefly increased in the area of the press rolls 19.
  • the now laminated material web 9 is removed on the outside along the endless pressure belt 13 in the direction of the winding 17.
  • the pressure calender roll 11 is not cooled. In continuous operation, the pressure calender roller 11 automatically receives approximately the temperature of the heating roller 12 by convection.
  • the temperature of the heating roller is strongly dependent on the type of material webs 4 and 6 to be laminated and on the choice of the coating powder applied.
  • the temperature of the heating roller 12 must surely be above the melting point of the coating material powder.
  • This roller temperature is usually between 100 ° and 250 ° Celsius.
  • the diameter of the heating roller can be, for example, 1000 mm. If you now calculate at a throughput speed of 15 m per minute and a wrap angle of approximately 270 °, this device results in a contact time of over 9 seconds, during which the heat sealing can take place between the two material webs to be laminated. Thanks to this long contact time, the temperatures can be set accordingly.
  • the adhesive strength of the hot-sealed laminated webs is considerably higher than the usual qualities. As FIG.
  • the coated web 4 is again between Heating roller 12 and pressure calender roller 11 are introduced into the inlet nip of the device and an uncoated material web 6 is fed from a first lamination processing 15 via the pressure calender roller 11 to the coated web 4, and now a second lamination processing 16 is also additionally fed from the second lamination processing 16 around the pressure calender roller 11.
  • the first, uncoated lamination layer 6 comes to lie between the coated web 4 or the second lamination layer 7.
  • the second lamination layer is an already coated web or can be coated before it enters the rolls. The uncoated web 6 thus comes to lie between two coated webs 4 and 7.
  • a further possibility consists in taking an uncoated material as the web-shaped material 4 and also feeding the second lamination layer as an uncoated material.
  • the first lamination layer 6 is a film or net made of heat-sealable material. This film 6 then comes to lie between the two webs 4 and 7 and leads to its perfect bonding.
  • the known calendering and laminating device in which the webs to be laminated are pressed together linearly in the area of the pressure point between the pressure calender roller and the heating roller and the heat is added, the printing time is extended considerably and consequently a lot more heat of the material web or the powder can be generated or fed to the film or mesh.
  • the device according to the invention for calendering or laminating sheet-like materials can be operated at the speed of an upstream powder coating system.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Kalandrieren und/oder Kaschieren von bahnförmigen Materialien, mittels Heissversiegelung, mit mindestens einer Anpresskalanderwalze, einer senkrecht darunter angeordneten temperaturgeführten Heizwalze, mindestens einer Kaschierabwicklung, Umlenkwalzen und einer Aufwicklung, wobei die temperaturgeführte Heizwalze einen erheblich grosseren Umfang als die Anpresskalandewalze hat. Die Erfindung betrifft auch die Verwendung einer solchen Vorrichtung.The present invention relates to a device for calendering and / or laminating sheet-like materials, by means of heat sealing, with at least one pressure calender roll, a temperature-controlled heating roll arranged vertically underneath, at least one laminating development, deflection rolls and a take-up roll, the temperature-controlled heating roll being of considerably greater scope than that Press calender roll has. The invention also relates to the use of such a device.

Vorrichtungen dieser Art sind bekannt. Sie sind oft angegliedert an Pulverbeschichtungsanlagen, die entweder eine Pulverpunktbeschichtungs-, eine Pulverstreu- oder eine Pasten-Punktbeschichtungsmaschine, sowie einen nachgeschalteten Ofen in der Form eines Heizkanales umfassen. Im einfachsten Fall kommt die pulver- oder pastenbeschichtete Materialbahn von der Beschichtungsanlage, während das darauf gesinterte Pulver oder Pasten noch weich ist und läuft zwischen zwei Kalanderwalzen hindurch, wobei das aufgetragene Pulver flachgedrückt, das heisst kalandirert wird und danach über eine oder mehreren Umlenk- und Kühlwalzen zur Aufwicklung geführt wird. Das Resultat ist meist einwandfrei und lässt durch die Geschwindigkeit, mit der die beschichtete Materialbahn geführt wird und durch den Anpressdruck zwischen den zwei Kalanderwalzen beeinflusst.Devices of this type are known. They are often associated with powder coating systems, which comprise either a powder spot coating, a powder spreading or a paste spot coating machine, as well as a downstream furnace in the form of a heating duct. In the simplest case, the powder or paste-coated material web comes from the coating system while the powder or paste sintered thereon is still soft and runs between two calender rolls, the powder applied being flattened, that is to say calendered and then via one or more deflection and Cooling rollers for winding. The result is usually flawless and is influenced by the speed at which the coated material web is guided and the contact pressure between the two calender rolls.

Aus der DE-B 12 25 373 ist ein Kalander bekannt, bei der statt einer, zwei oder drei Anpresskalanderwalzen vorhanden sind, die von einem Anpressband umschlauft sind. Diese über dem Einlaufspalt angeordnete Vorrichtung ersetzt eine einzige Anpresskalanderwalze und erhöht die Anpresszeit unter Beibehaltung eines hohen DruckesFrom DE-B 12 25 373 a calender is known in which instead of one, two or three pressure calender rolls are provided, which are looped around by a pressure belt. This device, which is arranged above the inlet nip, replaces a single pressure calender roller and increases the pressure time while maintaining a high pressure

Sehr viel problematischer ist eine gute, einwandfreie Kaschierung zweier bahnförmiger Materialien zu erreichen. Neben den bereits erwähnten Parametern, nämlich Geschwindigkeit, Spalthöhe und Druck spielen hier noch zusätzlich die Art und Dicke, der zu kaschierenden Materialien und deren Wärmeleitfähigkeit, eine wesentliche Rolle. Bei den bahnförmigen Materialien kann es sich um textile, gewobene oder ungewobene Bahnen aus Natur- oder Kunstfasern handeln, um Vliese, Schaumgummi, Kunststoff-Folien, Natur- oder Kunstleder, Pelze oder Kunstpelze oder dergleichen handeln. Viele dieser Materialien sind ausserordentlich temperatur- und druckempfindlich. Diese Bedingungen stehen oft in direktem Widerspruch zu den Erfordernissen einer einwandfreien heissversiegelten Verbindung. Zwar werden durch die Anmelderin eine grosse Anzahl verschiedenster Pulver auf den Markt gebracht, doch dürften gewisse Mindestwerte nicht unterschritten werden. Die gebäuchlichsten Kunststoffe für die Pulver- und Pastenbeschichtung sind Polyamide, Polyester, Hoch- und Niederdruck Polyaethylene, sowie Aethylenvynylacetat-Copolimerisate. Deren Schmelzpunkt variiert gemäss Messung nach Kofler zwischen cirka 60° und 140° Celsius. Die Bedingungen für eine einwandfreie Heissversiegelung liegen bei Temperaturen zwischen 100° und 180° Celsius, bei einem Druck von 200-4000 gr/cm2 und einer Zeit von 4-30 Sekunden.
Während bei einer patchweisen, diskontinuierlichen Heissversiegelung auf einer elektrischen Presse all diese Bedingungen einwandfrei erreichbar sind, liess sich dies kontinuierlich, wie dies auf einer Kalandriervorrichtung erfolgen soll, nur mangelhaft oder gar nicht erreichen, weil die Zeit zwischen den zwei Kalanderwalzen nur einen Bruchteil einer Sekunde ausmacht.
Besonders erschwert wird diese Aufgabe, wenn die Vorrichtung zum Kalandrieren und/oder Kaschieren direkt einer Pulver- oder Pastenbeschichtungsanlage nachgeschaltet ist. Die Fördergeschwindigkeit des bahnförmigen Materials wird hier durch die Beschichtungsanlage vorgegeben und beträgt üblicherwiese zwischen 15-40 m/Min..It is much more problematic to achieve good, perfect lamination of two web-shaped materials. In addition to the parameters already mentioned, namely speed, gap height and pressure, the type and thickness, the materials to be laminated and their thermal conductivity also play an important role here. The sheet-like materials can be textile, woven or non-woven sheets made of natural or synthetic fibers, nonwovens, foam rubber, plastic foils, natural or synthetic leather, furs or artificial furs or the like. Many of these materials are extremely sensitive to temperature and pressure. These conditions are often in direct contradiction to the requirements for a perfect heat-sealed connection. The applicant brings a large number of different powders onto the market, but certain minimum values should not be undercut. The most common plastics for powder and paste coating are polyamides, polyesters, high and low pressure polyethylenes, and ethylene vinyl acetate copolymers. According to the Kofler measurement, their melting point varies between around 60 ° and 140 ° Celsius. The conditions for perfect heat sealing are between 100 ° and 180 ° Celsius, at a pressure of 200-4000 gr / cm 2 and a time of 4-30 seconds.
While a patch-wise, discontinuous heat sealing on an electric press can achieve all these conditions perfectly, this could only be achieved poorly or not at all continuously, as is to be done on a calendering device, because the time between the two calender rolls is only a fraction of a second matters.
This task is particularly difficult if the device for calendering and / or laminating is connected directly to a powder or paste coating system. The conveying speed of the web-shaped material is specified here by the coating system and is usually between 15-40 m / min.

Es ist folglich die Aufgabe der vorliegenden Erfindung, eine Vorrichtung der eingangs genannten Art zu schaffen, die insbesondere geeignet ist, um einer Pulver- oder Pastenbeschichtungsanlage nachgeschaltet zu werden und mit der, die Qualität der Verbindung bei der Kaschierung von bahnförmigen Materialien mittels Heissversiegelung verbessert werden soll. Diese Aufgabe löst eine Vorrichtung mit den Merkmalen des Patentanspruches 1.
Die Verwendung der erfindungsgemässen Vorrichtung geht aus den Ansprüchen 11-15 hervor.It is therefore the object of the present invention to provide a device of the type mentioned at the outset, which is particularly suitable for being connected downstream of a powder or paste coating system and with which the quality of the connection in the lamination of web-shaped materials is improved by means of heat sealing should. This object is achieved by a device having the features of patent claim 1.
The use of the device according to the invention is evident from claims 11-15.

In der nachfolgenden Beschreibung ist ein Ausführungsbeispiel der erfindungsgemässen Vorrichtung zum Kalandrieren und/oder Kaschieren von bahnförmigen Materialien und deren Verwendung anhand der beiliegenden Zeichnungen erläutert. Es zeigt:

Figur 1
eine Gesamtansicht der erfindungsgemässen Vorrichtung, nachgeschaltet einer Pulver- oder Pastenbeschichtungsanlage;
Figur 2
ein Detail aus der Vorrichtung gemäss Figur 1 in schematischer Darstellung und in grösserem Massstab.
Figur 3
zeigt schematisch die Verwendung der Vorrichtung beim Kalandrieren;
Figur 4
dieselbe Darstellung bei der Verwendung der Vorrichtung beim Kaschieren, um zwei Bahnen zusammenzukleben und
Figur 5
unter Zufügung von zwei zu kaschierenden Materialbahnen.
In the following description, an embodiment of the device according to the invention for calendering and / or laminating sheet-like materials and their use is explained with reference to the accompanying drawings. It shows:
Figure 1
an overall view of the device according to the invention, downstream of a powder or paste coating system;
Figure 2
a detail of the device according to Figure 1 in a schematic representation and on a larger scale.
Figure 3
shows schematically the use of the device in calendering;
Figure 4
the same representation when using the device for lamination to glue two webs together and
Figure 5
with the addition of two material webs to be laminated.

In der nachfolgenden Beschreibung wird nun nur noch von Pulverbeschichtungsanlagen gesprochen, obwohl auch hier immer auch Pastenbeschichtungsanlagen in Frage kommen. In der Figur 1 ist die erfindungsgemässe Vorrichtung 10 zum Kalandrieren und/oder Kaschieren von bahnförmigen Materialien mittels Heissversiegelung einer Pulverbeschichtungsanlage nachgeschaltet. Die Pulverbeschichtungsanlage selber ist nicht Teil dieser Erfindung. Bei entsprechend reduzierter Geschwindigkeit kann beim Kaschieren der Ofen 5 auch weggelassen werden. Das zu kalandrierende, beziehungsweise zu kaschierende bahnförmige Material kommt von einer Abrollung 1. Das bahnförmige Material wird durch eine Pulverpunktbeschichtungsmaschine 2 hindurchgeführt. Anschliessend fährt das bahnförmige Material durch eine Pulverstreubeschichtungsmaschine 3. Die Pulverpunktbeschichtungsmaschine und die Pulverstreubeschichtungsmaschine 3 werden selbstverständlich nur alternativ verwendet. Es ist aber durchaus üblich, beide Maschinen in einer Anlage zu kombinieren, weil man das Wärmebehandlungsmittel 5 für beide Maschinen verwenden kann. Die nun beschichtete Bahn 4 gelangt anschliessend in einen Sinterofen 5, durch den das beschichtete bahnförmige Material hindurchgeführt wird. Das nun beschichtete bahnförmige Material 4 kann anschliessend entweder nur kalandriert werden oder mit einer ersten Kaschierlage belegt und kaschiert werden oder zusätzlich mit einer zweiten Kaschierlage in einem Arbeitsgang zu einem dreischichtigen bahnförmigen Material verarbeitet werden. Hierauf wird nachfolgend noch detailliert eingegangen werden.In the following description, only powder coating systems are referred to, although paste coating systems are also always considered here. In FIG. 1, the device 10 according to the invention for calendering and / or laminating web-shaped materials by means of heat sealing is connected downstream of a powder coating system. The powder coating system itself is not part of this invention. At a correspondingly reduced speed can also be omitted when laminating the oven 5. The web-like material to be calendered or laminated comes from a roll 1. The web-like material is passed through a powder dot coating machine 2. The web-shaped material then passes through a powder scatter coating machine 3. The powder point coating machine and the powder scatter coating machine 3 are of course only used alternatively. However, it is quite common to combine both machines in one system because the heat treatment agent 5 can be used for both machines. The now coated web 4 then passes into a sintering furnace 5 through which the coated web material is passed. The now coated sheet-like material 4 can then either only be calendered or coated and laminated with a first lamination layer or additionally processed with a second lamination sheet in one operation to form a three-layer sheet-like material. This will be discussed in more detail below.

Die eigentliche Kalandrier- und Kaschiervorrichtung 10 ist in einem Maschinengehäuse 20 angeordnet. Dieses besteht aus einer Schweisskonstruktion mit entsprechenden, tragenden Seitenwangen. Zwischen den beiden Seitenwangen des Maschinengehäuses 20 sind eine Vielzahl von Walzen gelagert. Zuoberst erkennt man die Anpresskalanderwalze 11, diese ist üblicherweise eine Stahlwalze, die gegebenenfalls wassergekühlt und/oder teflonisiert sein kann. Senkrecht unter ihr ist eine erheblich grössere Walze angeordnet, die sogenannte Heizwalze 12. Die Heizwalze 12 ist mit Heizmitteln versehen, mittels der die Temperatur in der Walze 12 exakt geführt werden kann. Der Umfang der Heizwalze 12 sollte möglichst gross sein, vorzugsweise einen Umfang von 500-1500mm. Um die Heizwalze 12, ist um mehr als den halben Umfang sich erstreckend, ein Anpressband 13 angeordnet. Das endlose Anpressband 13 ist über mehrere Bandführungswalzen 14 geführt. Die entweder kalandrierte Bahn 8 oder kaschierte Bahn 9 wird anschliessend auf der Aufwicklung 17 aufgerollt.The actual calendering and laminating device 10 is arranged in a machine housing 20. This consists of a welded construction with corresponding load-bearing side walls. A large number of rollers are mounted between the two side cheeks of the machine housing 20. At the top you can see the pressure calender roll 11, which is usually a steel roll which, if necessary, is water-cooled and / or teflonized can be. A considerably larger roller, the so-called heating roller 12, is arranged vertically below it. The heating roller 12 is provided with heating means by means of which the temperature in the roller 12 can be guided precisely. The circumference of the heating roller 12 should be as large as possible, preferably a circumference of 500-1500mm. A pressure belt 13 is arranged around the heating roller 12 and extends over more than half the circumference. The endless pressure belt 13 is guided over a plurality of belt guide rollers 14. The either calendered web 8 or laminated web 9 is then rolled up on the reel 17.

In der Figur 2 ist die Kalanderwalze 11, mit der ihr gegenüberliegenden Heizwalze 12 und mit dem um die Heizwalze 12 geführte Anpressband 13 gesondert dargestellt, wobei hier die Grössenverhältnisse eher der Realität entsprechen. Die bezüglich der Einlaufrichtung, der zu kaschierenden bahnförmigen Materialien zuvorderst liegende Bandführungswalze 18, ist als Spannwalze realisiert. Mittels ihr wird das Anpressband 13 immer gespannt gehalten. Die Bandführungswalze am anderen Umlenkende des endlosen Anpressbandes 13 ist als Presswalze 19 ausgeführt. Zwischen den beiden äussersten Bandführungswalzen sind mehrere weitere Walzen mit gleichem Durchmesser, wie die beiden vorgenannten Bandführungswalzen angeordnet. Diese sind gleichmässig über den Umfang verteilt. Vorteilhafterweise sind dieses Bandführungswalzen abwechslungsweise als fixe Walzen 14 und als einstellbare Presswalzen 19 ausgestaltet. So lässt sich abwechslungsweise ein gleichmässiger Druck und ein erhöhter spezifischer Druck entlang dem Umfang der Heizwalze 12 realisieren.In FIG. 2, the calender roll 11, with the heating roll 12 opposite it and with the pressure belt 13 guided around the heating roll 12, is shown separately, the size relationships here more closely corresponding to reality. The belt guide roller 18 lying at the foremost with respect to the inlet direction of the web-shaped materials to be laminated is realized as a tension roller. By means of it, the pressure belt 13 is always kept under tension. The tape guide roller at the other deflecting end of the endless pressure belt 13 is designed as a press roller 19. Between the two outermost belt guide rollers there are several further rollers with the same diameter as the two belt guide rollers mentioned above. These are evenly distributed over the circumference. Advantageously, these tape guide rollers are alternately designed as fixed rollers 14 and as adjustable press rollers 19. In this way, a uniform pressure and an increased specific pressure can be alternately realized along the circumference of the heating roller 12.

Versuche haben gezeigt, dass man das Anpressband 13 vorteilhafterweise aus einem Silikon-beschichteten Glasfasergewebe herstellen kann. Ein solches Gewebe ist möglichst verzugsfrei und schont das Material, der zu kaschierenden Bahnen. Auch ist die Gefahr, dass noch auf das Anpressband gelangende Pulverpartikel an das Anpressband haften bleiben, dadurch reduziert. Dieses Problem tritt bei der Kaschierung jedoch nur in geringem Mass auf. Viel problematischer ist das Anhaften von noch relativ weichem Kunststoffpulver an der Anpresskalanderwalze 11. Daher wird man bevorzugt die Anpresskalanderwalze 11 mit einem Antihaftbelag versehen.Tests have shown that the pressure belt 13 can advantageously be produced from a silicone-coated glass fiber fabric. Such a fabric is as distortion-free as possible and protects the material of the webs to be laminated. This also reduces the risk that powder particles still reaching the pressure belt will adhere to the pressure belt. However, this problem occurs only to a small extent with the lamination. Adhesion of still relatively soft plastic powder to the pressure calender roller 11 is much more problematic. Therefore, the pressure calender roller 11 is preferably provided with a non-stick coating.

Nachfolgend werden die verschiedenen Verwendungsarten der erfindungsgemässen Vorrichtung beschrieben.The various types of use of the device according to the invention are described below.

In der Figur 3 ist die einfachste Form der Verwendung, nämlich das Kalandrieren, dargestellt. Das mit einer Beschichtung versehene bahnförmige Material wird hier gerade in den Einlaufspalt zwischen der Anpresskalanderwalze 11 und der Heizwalze 12 hindurchgeführt. Die beschichtete Seite der Bahn 4 liegt dabei oben auf und kommt nur mit der Anpresskalanderwalze 11 in Berührung, welche gekühlt und/oder teflonisiert sein sollte. Das bahnförmige Material 4 kommt dabei in noch heissem Zustand direkt aus dem Sinterofen 5 zur Kalandriervorrichtung 10. Das auf dem bahnförmigen Material aufgesinterte Material ist dabei noch relativ weich.
Unter der Anpresskalanderwalze, die wie beschrieben mit einem Antihaftbelag versehen ist, werden die einzelnen Kunststoffpartikel der Pulverbeschichtung flach gedrückt. Hinter der Anpresskalanderwalze 11 kommt somit die fertig kalandrierte Materialbahn 8 heraus und kann anschliessend auf der Aufwicklung 17 aufgerollt werden. Bei der Verwendung der Vorrichtung 10 als Kalander wird die Anpresskalanderwalze 11 gekühlt, damit im Dauerbetrieb die Anpresskalanderwalze 11 sich nicht zu stark erwärmt.
Auch bei der Verwendung der erfindungsgemässe Vorrichtung zur Erstellung einer zweilagigen Kaschierung führt man eine pulverbeschichtete Materialbahn 4 in den Einlaufspalt zwischen der Anpresskalanderwalze 11 und der Heizwalze 12 hinein. Gleichzeitig wird von einer ersten Kaschierabwicklung 15 eine unbeschichtete Materialbahn als erste Kaschierlage 6 über die Anpresskalanderwalze 11 der beschichteten Bahn 4 zugeführt. Die beiden satt aufeinanderliegenden Materialbahnen 4 und 6 werden danach gemeinsam zwischen dem Anpressband 13 und der Heizwalze 12 um einen möglichst grossen Teil dessen Umfanges gemeinsam geführt. Hierbei wird gleichzeitig von der Heizwalze 12 Wärme auf das zu kaschierende Material geleitet und gleichzeitig ein über längere Zeit andauernder Druck ausgeübt. Der Druck wird jeweils im Bereich der Presswalzen 19 kurzzeitig erhöht. Danach wird die nun kaschierte Materialbahn 9 auf der Aussenseite entlang dem endlosen Anpressband 13 in Richtung zur Aufwicklung 17 hin abgeführt. Bei dieser Verwendung der Vorrichtung wird die Anpresskalanderwalze 11 nicht gekühlt. Im Dauerbetrieb erhält die Anpresskalanderwalze 11 automatisch durch Konvektion annähernd etwa die Temperatur der Heizwalze 12. Die Temperatur der Heizkwalze ist stark abhängig von der Art der zu kaschierenden Materialbahnen 4 und 6, sowie von der Wahl des aufgebrachten Beschichtungspulvers. Sicherlich muss die Temperatur der Heizwalze 12 über dem Schmelzpunkt des Beschichtungmaterialpulvers liegen. Ueblicherweise liegt diese Walzentemperatur zwischen 100° und 250° Celsius. Der Durchmesser der Heizwalze kann beispielsweise 1000mm betragen. Rechnet man nun mit einer Durchlaufgeschwindigkeit von 15m pro Minute und einem Umschlingungswinkel von ungefähr 270°, so ergibt sich bei dieser Vorrichtung eine Berührungszeit von über 9 Sekunden, innert der die Heissversiegelung zwischen den beiden zu kaschierenden Materialbahnen stattfinden kann. Dank dieser langen Berührungszeit kann man entsprechend auch die Temperaturen einstellen. Die Haftfestigkeit, der so heiss versiegelten kaschierten Bahnen, ist erheblich höher, als die bisher üblichen Qualitäten.
Wie Figur 5 zeigt ist es selbstverständlich auch möglich, eine dreilagige Kaschierung herzustellen. Wie bereits vorher beschrieben, wird wiederum die beschichtete Bahn 4 zwischen Heizwalze 12 und Anpresskalanderwalze 11 in den Einlaufspalt der Vorrichtung eingeführt und von einer ersten Kaschierabwicklung 15 eine unbeschichtete Materialbahn 6 über die Anpresskalanderwalze 11 der beschichteten Bahn 4 zugeleitet und nun zusätzlich von einer zweiten Kaschierabwicklung 16 eine zweite Kaschierlage 7 ebenfalls um die Anpresskalanderwalze 11 herum zugeführt. Auf diese Weise kommt die erste, unbeschichtete Kaschierlage 6 zwischen der beschichteten Bahn 4 oder der zweiten Kaschierlage 7 zu liegen. Die zweite Kaschierlage ist eine bereits beschichtete Bahn oder kann vor dem Einlauf in die Walzen noch beschichtet werden. Die unbeschichtete Bahn 6 kommt somit zwischen zwei beschichteten Bahnen 4 und 7 zu liegen. Eine weitere Möglichkeit besteht darin, dass man als bahnförmiges Material 4 ein unbeschichtetes Material nimmt und die zweite Kaschierlage ebenfalls als unbeschichtetes Material zuführt. In diesem Fall ist die erste Kaschierlage 6 eine Folie oder Netz aus heissversiegelbarem Material. Diese Folie 6 kommt dann zwischen den beiden Bahnen 4 und 7 zu liegen und führt zu dessen einwandfreien Verklebung.
Im Gegensatz zur bekannten Kalander- und Kaschiervorrichtung, bei der die zu kaschierenden Bahnen lediglich linienförmig im Bereich der Andrückstelle zwischen Anpresskalanderwalze und Heizwalze zusammengepresst und Wärme zugeführt wird, wird hier die Druckzeit erheblich verlängert und folglich kann sehr viel mehr Wärme der Materialbahn, beziehungsweise dem Pulver oder der Folie oder Netz zugeführt werden. Als Folge hiervon, kann sowohl die Temperatur der Heizwalze gesenkt werden, wie auch der Anpressdruck vermindert werden. Beides führt zu einer Schonung des zu kaschierenden Materials. Folglich kann die erfindungsgemässe Vorrichtung zum Kalandrieren oder Kaschieren von bahnförmigen Materialien mit der Geschwindigkeit einer vorgeschalteten Pulverbeschichtungsanlage gefahren werden.FIG. 3 shows the simplest form of use, namely calendering. The web-shaped material provided with a coating is here being fed straight into the inlet nip between the pressure calender roll 11 and the heating roll 12. The coated side of the web 4 lies on top and comes into contact only with the pressure calender roller 11, which should be cooled and / or teflonized. The web-shaped Material 4, while still hot, comes directly from the sintering furnace 5 to the calendering device 10. The material sintered onto the web-like material is still relatively soft.
The individual plastic particles of the powder coating are pressed flat under the pressure calender roller, which is provided with a non-stick coating as described. The finished calendered material web 8 thus comes out from behind the pressure calender roll 11 and can then be rolled up on the winding 17. When the device 10 is used as a calender, the pressure calender roller 11 is cooled so that the pressure calender roller 11 does not heat up too much in continuous operation.
Even when using the device according to the invention for producing a two-layer lamination, a powder-coated material web 4 is introduced into the inlet nip between the pressure calender roll 11 and the heating roll 12. At the same time, an uncoated material web is fed from a first lamination processing 15 as the first lamination layer 6 via the pressure calender roller 11 to the coated web 4. The two material webs 4 and 6, which lie snugly one on top of the other, are then jointly guided between the pressure belt 13 and the heating roller 12 by as much as possible of its circumference. At the same time, heat is conducted from the heating roller 12 onto the material to be laminated and, at the same time, pressure is exerted over a long period of time. The pressure will each briefly increased in the area of the press rolls 19. Then the now laminated material web 9 is removed on the outside along the endless pressure belt 13 in the direction of the winding 17. When using the device, the pressure calender roll 11 is not cooled. In continuous operation, the pressure calender roller 11 automatically receives approximately the temperature of the heating roller 12 by convection. The temperature of the heating roller is strongly dependent on the type of material webs 4 and 6 to be laminated and on the choice of the coating powder applied. The temperature of the heating roller 12 must surely be above the melting point of the coating material powder. This roller temperature is usually between 100 ° and 250 ° Celsius. The diameter of the heating roller can be, for example, 1000 mm. If you now calculate at a throughput speed of 15 m per minute and a wrap angle of approximately 270 °, this device results in a contact time of over 9 seconds, during which the heat sealing can take place between the two material webs to be laminated. Thanks to this long contact time, the temperatures can be set accordingly. The adhesive strength of the hot-sealed laminated webs is considerably higher than the usual qualities.
As FIG. 5 shows, it is of course also possible to produce a three-layer lamination. As previously described, the coated web 4 is again between Heating roller 12 and pressure calender roller 11 are introduced into the inlet nip of the device and an uncoated material web 6 is fed from a first lamination processing 15 via the pressure calender roller 11 to the coated web 4, and now a second lamination processing 16 is also additionally fed from the second lamination processing 16 around the pressure calender roller 11. In this way, the first, uncoated lamination layer 6 comes to lie between the coated web 4 or the second lamination layer 7. The second lamination layer is an already coated web or can be coated before it enters the rolls. The uncoated web 6 thus comes to lie between two coated webs 4 and 7. A further possibility consists in taking an uncoated material as the web-shaped material 4 and also feeding the second lamination layer as an uncoated material. In this case, the first lamination layer 6 is a film or net made of heat-sealable material. This film 6 then comes to lie between the two webs 4 and 7 and leads to its perfect bonding.
In contrast to the known calendering and laminating device, in which the webs to be laminated are pressed together linearly in the area of the pressure point between the pressure calender roller and the heating roller and the heat is added, the printing time is extended considerably and consequently a lot more heat of the material web or the powder can be generated or fed to the film or mesh. As a result, may both the temperature of the heating roller can be reduced and the contact pressure can be reduced. Both lead to a protection of the material to be laminated. Consequently, the device according to the invention for calendering or laminating sheet-like materials can be operated at the speed of an upstream powder coating system.

Claims (15)

  1. Apparatus for calendering and/or laminating (10) web-like materials (4) by means of heat sealing, having at least one pressure calender roll (11), a temperature-guided heating roller (12) arranged vertically below the latter, at least one laminating take-off device (15), guide rollers and a take-up device (17), the temperature-guided heating roller (12) having a much larger circumference than the pressure calender roll (11), characterized in that below the entrance gap between the pressure calendering roll and the heating roller there are several belt guidance rollers (14, 18, 19) arranged around the temperature-guided heating roller (12) and by means of which is guided an endless pressure belt (13) following the pressure calender roll and which is guided around at least half the circumference of the heating roller (12) and is applied under pressure thereto.
  2. Apparatus according to claim 1, characterized in that one of the two outermost belt guidance rollers about which the pressure belt (13) runs is a stretch roller (18).
  3. Apparatus according to claim 2, characterized in that the stretch roller (14) is located on the entrance side with respect to the web-like materials (4, 6, 7) to be laminated.
  4. Apparatus according to claims 2 or 3, characterized in that the other outermost belt guidance roller about which the pressure belt (13) runs is an adjustable press roller (19).
  5. Apparatus according to one of the claims 2 to 4, characterized in that the further belt guidance rollers between the two outermost belt guidance rollers (18) around which passes the pressure belt (13) are alternately in each case a fixed belt guidance roller (14) and an adjustable belt guidance roller acting as a press roller (19).
  6. Apparatus according to claim 1, characterized in that the endless pressure belt (13) is made from silicone-coated glass fibre fabric or felt.
  7. Apparatus according to claim 1, characterized in that the heating roller (12) is a temperature-regulated, heatable roller.
  8. Apparatus according to claim 1, characterized in that the pressure calender roll (11) is cooled.
  9. Apparatus according to claim 1, characterized in that there are two laminating take-off devices (15, 16).
  10. Apparatus according to claim 1, characterized in that the calender roll (11) is provided with an antiblocking coating.
  11. Use of the apparatus according to one of the claims 1 to 10, characterized in that a powder or paste-coated belt (4) coming from an upstream powder or paste coating installation is guided by the following apparatus (10).
  12. Use of the apparatus according to claim 11, characterized in that a single, coated web is passed directly between the pressure calender roll and the heating roller, whilst avoiding the passage between the heating roller and the endless pressure belt.
  13. Use of the apparatus according to claim 11, characterized in that the powder or paste-coated web (14) coming from the powder or paste coating installation is supplied by a first laminating take-off device with a second, uncoated web (6) by means of the pressure calender roll (11) and the two webs (4, 6) are guided round the heating roller (12) between the latter and the endless pressure belt (13), whilst regulating the temperature, pressure and speed.
  14. Use according to claim 13, characterized in that from a second laminating take-off device (16) is supplied a third, already coated web (7), simultaneously around the pressure calender roll (11), to the two other webs (4, 6).
  15. Use of the apparatus according to at least one of the claims 1 to 10, characterized in that a first, uncoated web is directly introduced into the entrance between the pressure calender roll (11) and the heating roller (12) and from a first laminating take-off device (15) is supplied a film or net (6) of heat-sealable material and from a second laminating take-off device (16) a second, uncoated material web (7), accompanied by the interposing of the heat-sealable film or net, via the pressure calender roll (11), jointly to the first material web and all three webs are jointly passed between the temperature-regulated heating roller (12) and the pressure belt (13).
EP92810555A 1991-09-12 1992-07-21 Apparatus for calendering and/or laminating sheet-like textile materials Expired - Lifetime EP0532455B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2678/91 1991-09-12
CH267891 1991-09-12

Publications (2)

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EP0532455A1 EP0532455A1 (en) 1993-03-17
EP0532455B1 true EP0532455B1 (en) 1996-11-27

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EP92810555A Expired - Lifetime EP0532455B1 (en) 1991-09-12 1992-07-21 Apparatus for calendering and/or laminating sheet-like textile materials

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DE (1) DE59207582D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1485529A2 (en) 2002-03-19 2004-12-15 Francis Norbert Marie Lampe A mattress cover and a method of manufacturing the same, as well as a mattress

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322644C1 (en) * 1993-07-07 1994-09-29 Billhofer Maschf Gmbh Device for applying dispersions containing wax
DE10206256B4 (en) * 2002-02-15 2006-09-21 Beiersdorf Ag Area calender and surface calendering
DE202004016118U1 (en) * 2004-10-18 2006-02-23 Eduard Küsters Maschinenfabrik GmbH & Co. KG Engraved printing roller has a series of raised plateaus separated by anti-stick zones
ATE534767T1 (en) * 2009-06-30 2011-12-15 Andritz Kuesters Gmbh CALENDAR FOR TREATING A WEB
CN103015110B (en) * 2011-09-22 2017-01-25 保定宁信新型材料有限公司 Glass fiber mesh cloth warp-finishing and weft-finishing shaping method
CN103015085B (en) * 2011-09-22 2016-08-17 保定宁信新型材料有限公司 The automatic warping of fiberglass gridding cloth whole latitude forming machine
CN111785916A (en) * 2020-07-29 2020-10-16 吉林大学 Two-sided quick coating film of PET membrane, coating equipment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1103279B (en) * 1956-11-02 1961-03-30 Zimmer S Erben K G Device for pressure treatment of material webs
NL103862C (en) * 1957-01-09
DE1076611B (en) * 1957-09-19 1960-03-03 Benteler Werke Ag Device for squeezing moisture out of textiles
DE1225373B (en) * 1960-01-11 1966-09-22 Demag Ag Calender for treating webs
DE1124910B (en) * 1960-03-24 1962-03-08 R V Wening Maschb Device for squeezing liquids from wide textile webs
US3146160A (en) * 1960-08-01 1964-08-25 Beloit Iron Works Roll with adjustable deflection means
DE7440068U (en) * 1974-12-02 1980-01-17 Drabert Soehne, 4950 Minden DEVICE FOR CONTINUOUSLY DETECTING FABRICS, KNITTED OR THE LIKE.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1485529A2 (en) 2002-03-19 2004-12-15 Francis Norbert Marie Lampe A mattress cover and a method of manufacturing the same, as well as a mattress

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DE59207582D1 (en) 1997-01-09
EP0532455A1 (en) 1993-03-17

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