EP1674615A1 - Smoothing arrangement - Google Patents

Smoothing arrangement Download PDF

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Publication number
EP1674615A1
EP1674615A1 EP05105829A EP05105829A EP1674615A1 EP 1674615 A1 EP1674615 A1 EP 1674615A1 EP 05105829 A EP05105829 A EP 05105829A EP 05105829 A EP05105829 A EP 05105829A EP 1674615 A1 EP1674615 A1 EP 1674615A1
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EP
European Patent Office
Prior art keywords
fibrous web
smoothing
web
coating
heated
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EP05105829A
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German (de)
French (fr)
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EP1674615B1 (en
Inventor
Jörg Dr. Rheims
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Voith Patent GmbH
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Voith Patent GmbH
Voith Paper Patent GmbH
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Publication of EP1674615A1 publication Critical patent/EP1674615A1/en
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21GCALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00Calenders; Smoothing apparatus
    • D21G1/006Calenders; Smoothing apparatus with extended nips
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21GCALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00Calenders; Smoothing apparatus
    • D21G1/0073Accessories for calenders
    • D21G1/0093Web conditioning devices

Definitions

  • the invention relates to a method for smoothing a paper, cardboard or other fibrous web coated on both sides in a machine for producing and / or finishing the same.
  • the invention also relates to a device for smoothing a paper, board or other fibrous web coated on both sides in a machine for producing and / or finishing the same, wherein the fibrous web is guided after drying on both sides by at least one drying device for drying the fibrous web.
  • both of their surfaces are coated with a coating layer.
  • the smoothing of the fibrous web is then carried out in a Mehrwalzenkalander with usually more than 4 Glättnips. As a result of this smoothing, there is a strong compaction and thus a reduction in the strength of the fibrous web.
  • the object of the invention is therefore to smooth the volume coated on both sides coated fibrous web with the least possible effort.
  • this object is achieved in that the fibrous web coated on both sides for smoothing is guided on both sides by at least two extended smoothing gaps, the fibrous web being dried between brushing and smoothing.
  • the device is essential that the fibrous web after the drying device for smoothing by two each of a cylindrical Counter roll and a smoothing roll formed with a flexible roll shell, elongated Glättspalte is performed.
  • the extended smoothing gaps enable the use of lower pressing forces and thus a smoothing process which avoids volume.
  • the flexible roll shell is pressed by a pressing element of the press roll with concave pressing surface to the backing roll, relatively simple.
  • the fibrous web should be heated in the nips at least on one side, preferably by heating the counter-roll.
  • the heated counter-rollers are arranged on different sides of the fibrous web.
  • the smoothness effect can be improved by wetting the fibrous web at least on one side before a calendering nip, wherein preferably the side of the fibrous web heated in the immediately following nip is moistened.
  • a moistening device should be assigned to the fibrous web in front of a calendering nip which moistens the fibrous web at least on one side, the moistening device preferably moistening the side of the fibrous web coming into contact with the heated backing roll in the immediately following nip.
  • the moistening also compensates in advance at least partially for the moisture loss resulting from the drying due to the contact of the fibrous web with the heated counter-roller.
  • a moisture amount of less than 2g / m 2 preferably of at most 1 g / m 2 , is applied to the fibrous web.
  • the fibrous web before painting i. the coating unit is guided by at least one, with respect to the pressing pressure in the smoothing nip transversely to the direction of web travel profilierbaren smoothing nip.
  • the coating agent applied to the fibrous web during coating contains organic and / or inorganic coating pigments.
  • the constituents of the coating composition should have a temperature resistance of at least 200 ° C, preferably at least 250 ° C.
  • the coating composition contains organic and / or inorganic pigments and has a temperature resistance of over 200 ° C.
  • the fibrous web 1 is passed through a drying device 4 for drying the line, in which indirect drying takes place via infrared rays and / or hot air.
  • smooth volume smoothing the fibrous web 1 runs through two extended smoothing column.
  • These smoothing gaps are each formed by a heated counter-roller 5, 6 and a smoothing roller 7, 8 with a flexible roll shell, which is pressed via a pressing element 9 with a concave pressing surface to the respective counter-roller 5, 6.
  • the first heated counter-roller 5 is above and the second 6 below the fibrous web 1, which allows an equilateral treatment of the fibrous web 1.
  • the heating of the fibrous web 1 leads here to an improvement of the smoothness effect.
  • the fibrous web 1 can be guided in front of the coating units 2, 3 by means of a smoothing nip formed by two cylindrical smoothing rolls 13. In this smoothing gap, it is easily possible to set a pressing pressure profile transversely to the web running direction 12.

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  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)

Abstract

The fibrous web (1) passes through a coating unit (2, 3) to the drying unit (4). Following drying, the web is passed through two nips formed by cylindrical pressure rollers (5, 6) and glazing rollers (7, 8) with flexible roller casings which form elongated glazing nips. The web is heated on one or both sides in the glazing nips. It is moistened on at least one side before a nip. In the subsequent nip, the heated side of the web is moistened. The moistening unit (10, 11) applies preferably 1 g/m 2>at most, to the web. Drying takes place between coating and glazing. Before coating, the web is passed through at least one glazing nip formed by two glazing rollers (13) profiled transversely with respect to the direction of motion (12) under mechanical pressure. The coating medium contains organic and/or inorganic coating pigments. The coating resists temperatures of preferably at least 250[deg]C, reached during application. An independent claim is included for the corresponding method.

Description

Die Erfindung betrifft ein Verfahren zur Glättung einer beidseitig gestrichenen Papier-, Karton- oder einer anderen Faserstoffbahn in einer Maschine zur Herstellung und/oder Veredlung derselben.The invention relates to a method for smoothing a paper, cardboard or other fibrous web coated on both sides in a machine for producing and / or finishing the same.

Die Erfindung betrifft außerdem eine Vorrichtung zur Glättung einer beidseitig gestrichenen Papier-, Karton- oder einer anderen Faserstoffbahn in einer Maschine zur Herstellung und/oder Veredlung derselben, wobei die Faserstoffbahn nach dem beidseitigen Streichen durch wenigstens eine Trocknungsvorrichtung zum Trocknen der Faserstoffbahn geführt wird.The invention also relates to a device for smoothing a paper, board or other fibrous web coated on both sides in a machine for producing and / or finishing the same, wherein the fibrous web is guided after drying on both sides by at least one drying device for drying the fibrous web.

Zur Erzeugung hochwertiger Faserstoffbahnen werden deren beide Oberflächen mit einer Strichschicht überzogen.To produce high-quality fibrous webs, both of their surfaces are coated with a coating layer.

Die Glättung der Faserstoffbahn erfolgt dann in einem Mehrwalzenkalander mit meist mehr als 4 Glättnips. Im Ergebnis dieser Glättung kommt es zu einer starken Verdichtung und damit auch zu einer Verminderung der Festigkeit der Faserstoffbahn.The smoothing of the fibrous web is then carried out in a Mehrwalzenkalander with usually more than 4 Glättnips. As a result of this smoothing, there is a strong compaction and thus a reduction in the strength of the fibrous web.

Die Aufgabe der Erfindung ist es daher, die beidseitig gestrichene Faserstoffbahn mit möglichst geringem Aufwand volumenschonend zu glätten.The object of the invention is therefore to smooth the volume coated on both sides coated fibrous web with the least possible effort.

Erfindungsgemäß wurde die Aufgabe dadurch gelöst, dass die beidseitig gestrichene Faserstoffbahn zur Glättung auf beiden Seiten durch wenigstens zwei verlängerte Glättspalte geführt wird, wobei die Fasestoffbahn zwischen dem Streichen und dem Glätten getrocknet wird.According to the invention, this object is achieved in that the fibrous web coated on both sides for smoothing is guided on both sides by at least two extended smoothing gaps, the fibrous web being dried between brushing and smoothing.

Hinsichtlich der Vorrichtung ist wesentlich, dass die Faserstoffbahn nach der Trocknungsvorrichtung zur Glättung durch zwei jeweils von einer zylindrischen Gegenwalze und einer Glättwalze mit einem flexiblen Walzenmantel gebildete, verlängerte Glättspalte geführt wird.With regard to the device is essential that the fibrous web after the drying device for smoothing by two each of a cylindrical Counter roll and a smoothing roll formed with a flexible roll shell, elongated Glättspalte is performed.

Die verlängerten Glättspalte ermöglichen wegen der längeren Verweilzeit der Faserstoffbahn im Glättspalt die Anwendung geringerer Presskräfte und somit eine volumenschonende Glättung.Due to the longer residence time of the fibrous web in the calendering nip, the extended smoothing gaps enable the use of lower pressing forces and thus a smoothing process which avoids volume.

Dabei ist die Realisierung des verlängerten Glättspaltes mit Hilfe der Gegenwalze und der Presswalze, deren flexibler Walzenmantel von einem Presselement der Presswalze mit konkaver Pressfläche zur Gegenwalze gedrückt wird, relativ einfach.In this case, the realization of the extended smoothing gap by means of the backing roll and the press roll, the flexible roll shell is pressed by a pressing element of the press roll with concave pressing surface to the backing roll, relatively simple.

Zur Verbesserung des Glättergebnisses sollte die Faserstoffbahn i n den Glättspalten zumindest einseitig, vorzugsweise über die Beheizung der Gegenwalze, erwärmt werden.To improve the smoothing result, the fibrous web should be heated in the nips at least on one side, preferably by heating the counter-roll.

Um dabei eine möglichst geringe Zweiseitigkeit der Faserstoffbahn zu gewährleisten, sollten in den Glättspalten unterschiedliche Seiten der Faserstoffbahn erwärmt werden.In order to ensure the lowest possible two-sidedness of the fibrous web, different sides of the fibrous web should be heated in the calendering columns.

Daher sind die beheizten Gegenwalzen auf unterschiedlichen Seiten der Faserstoffbahn angeordnet.Therefore, the heated counter-rollers are arranged on different sides of the fibrous web.

Der Glätteffekt kann durch verbessert werden, dass die Faserstoffbahn vor einem Glättspalt zumindest einseitig befeuchtet wird, wobei vorzugsweise die im unmittelbar folgenden Glättspalt erwärmte Seite der Faserstoffbahn befeuchtet wird.The smoothness effect can be improved by wetting the fibrous web at least on one side before a calendering nip, wherein preferably the side of the fibrous web heated in the immediately following nip is moistened.

Vorrichtungsgemäß sollte hierzu der Faserstoffbahn vor einem Glättspalt eine Befeuchtungsvorrichtung zugeordnet werden, welche die Faserstoffbahn zumindest einseitig befeuchtet, wobei die Befeuchtungsvorrichtung vorzugsweise die im unmittelbar folgenden Glättspalt mit der beheizten Gegenwalze in Kontakt kommende Seite der Faserstoffbahn befeuchtet.According to the device, a moistening device should be assigned to the fibrous web in front of a calendering nip which moistens the fibrous web at least on one side, the moistening device preferably moistening the side of the fibrous web coming into contact with the heated backing roll in the immediately following nip.

Die Befeuchtung gleicht aber auch den durch die Trocknung infolge des Kontaktes der Faserstoffbahn mit der beheizten Gegenwalze entstehenden Feuchteverlust im voraus zumindest teilweise aus.However, the moistening also compensates in advance at least partially for the moisture loss resulting from the drying due to the contact of the fibrous web with the heated counter-roller.

Hierzu genügt es, dass während der Befeuchtung eine Feuchtigkeitsmenge von weniger als 2g/m2, vorzugsweise von höchstens 1 g/m2, auf die Faserstoffbahn aufgebracht wird.For this purpose, it is sufficient that during moistening a moisture amount of less than 2g / m 2 , preferably of at most 1 g / m 2 , is applied to the fibrous web.

Da in den verlängerten Glättspalten wegen des verminderten Pressdrucks, aber auch der besonderen Gestaltung der Walzen, keine Profilierung zumindest in ausreichendem Maße möglich ist, kann es vorteilhaft sein, wenn die Faserstoffbahn vor dem Streichen, d.h. dem Streichaggregat, durch zumindest einen, hinsichtlich des Pressdrucks im Glättspalt quer zur Bahnlaufrichtung profilierbaren Glättspalt geführt wird.Since no profiling is at least sufficiently possible in the extended nips due to the reduced compacting pressure, but also the special design of the rollers, it may be advantageous if the fibrous web before painting, i. the coating unit is guided by at least one, with respect to the pressing pressure in the smoothing nip transversely to the direction of web travel profilierbaren smoothing nip.

Das während des Streichens auf die Faserstoffbahn aufgetragene Streichmittel enthält organische und/oder anorganische Strichpigmente.The coating agent applied to the fibrous web during coating contains organic and / or inorganic coating pigments.

Wegen der hohen Temperaturen im Glättspalt sollten die Bestandteile des Streichmittels eine Temperaturbeständigkeit von mindestens 200°C, vorzugsweise von wenigstens 250 °C aufweisen.Because of the high temperatures in the nip, the constituents of the coating composition should have a temperature resistance of at least 200 ° C, preferably at least 250 ° C.

Nachfolgend soll die Erfindung an einem Ausführungsbeispiel näher erläutert werden. In der beigefügten Zeichnung zeigt die Figur einen schematischen Querschnitt durch eine Glättanordnung mit Streichaggregaten 2,3.The invention will be explained in more detail with reference to an exemplary embodiment. In the accompanying drawing, the figure shows a schematic cross section through a smoothing arrangement with coating units 2,3.

Über die Streichaggregate 2,3 wird zur Veredlung der Faserstoffbahn 1 beidseitig ein Streichmittel auf diese aufgetragen. Dieser Streichvorgang erfolgt hier, beispielweise wie angedeutet, indirekt.About the coating units 2,3 is applied to the finishing of the fibrous web 1 on both sides of a coating agent on this. This coating process takes place here, for example, as indicated, indirectly.

Das Streichmittel enthält organische und/oder anorganische Strichpigmente und hat eine Temperaturbeständigkeit von über 200 °C.The coating composition contains organic and / or inorganic pigments and has a temperature resistance of over 200 ° C.

Nach dem Streichen wird die Faserstoffbahn 1 zum Trocknen des Strichs durch eine Trocknungsvorrichtung 4 geführt, in welcher eine indirekte Trocknung über Infrarotstrahlen und/oder Heißluft erfolgt.After coating, the fibrous web 1 is passed through a drying device 4 for drying the line, in which indirect drying takes place via infrared rays and / or hot air.

Zur anschließenden, volumenschonenden Glättung läuft die Faserstoffbahn 1 durch zwei verlängerte Glättspalte. Diese Glättspalte werden von je einer beheizten Gegenwalze 5,6 und einer Glättwalze 7,8 mit flexiblem Walzenmantel gebildet, welcher über ein Presselement 9 mit konkaver Pressfläche zur jeweiligen Gegenwalze 5,6 gedrückt wird.For subsequent, smooth volume smoothing the fibrous web 1 runs through two extended smoothing column. These smoothing gaps are each formed by a heated counter-roller 5, 6 and a smoothing roller 7, 8 with a flexible roll shell, which is pressed via a pressing element 9 with a concave pressing surface to the respective counter-roller 5, 6.

Dabei befindet sich die erste beheizte Gegenwalze 5 über und die zweite 6 unter der Faserstoffbahn 1, was eine gleichseitige Behandlung der Faserstoffbahn 1 ermöglicht. Die Erwärmung der Faserstoffbahn 1 führt hier zu einer Verbesserung des Glätteffekts.In this case, the first heated counter-roller 5 is above and the second 6 below the fibrous web 1, which allows an equilateral treatment of the fibrous web 1. The heating of the fibrous web 1 leads here to an improvement of the smoothness effect.

Um die Glättung noch weiter zu verbessern und gleichzeitig die durch die einseitige Trocknung infolge des Kontaktes mit der beheizten Gegenwalze 5,6 zustande kommende Trocknung auszugleichen, wird die mit der Gegenwalze 5,6 in Kontakt kommende Seite der Faserstoffbahn 1 unmittelbar vor dem jeweiligen Glättspalt über eine Befeuchtungsvorrichtung 10,11 befeuchtet.In order to further improve the smoothing and at the same time to compensate for the drying caused by the one-sided drying as a result of contact with the heated counter-roller 5, 6, the side of the fibrous web 1 coming into contact with the counter-roller 5, 6 is transferred immediately before the respective smoothing nip a moistening device 10, 11 moistened.

Während jeder Befeuchtung, vorzugsweise mittels Wasserdampf, gelangt nur 1g Wasser pro 1m2 Faserstoffbahnfläche in und auf die Faserstoffbahn 1.During each moistening, preferably by means of water vapor, only 1 g of water per 1 m 2 fibrous web surface enters and onto the fibrous web 1.

Um die Faserstoffbahn 1 profilieren zu können, kann die Faserstoffbahn 1 vor den Streichaggregaten 2,3 durch einen, von zwei zylindrischen Glättwalzen 13 gebildeten Glättspalt geführt werden. In diesem Glättspalt ist es problemlos möglich, ein Pressdruckprofil quer zur Bahnlaufrichtung 12 einzustellen.In order to be able to profile the fibrous web 1, the fibrous web 1 can be guided in front of the coating units 2, 3 by means of a smoothing nip formed by two cylindrical smoothing rolls 13. In this smoothing gap, it is easily possible to set a pressing pressure profile transversely to the web running direction 12.

Claims (21)

Verfahren zur Glättung einer beidseitig gestrichenen Papier-, Karton- oder einer anderen Faserstoffbahn (1) in einer Maschine zur Herstellung und/oder Veredlung derselben, dadurch gekennzeichnet, dass
die gestrichene Faserstoffbahn (1) zur Glättung auf beiden Seiten durch zwei verlängerte Glättspalte geführt wird.
Method for smoothing a paper, board or another fibrous web (1) coated on both sides in a machine for producing and / or finishing the same, characterized in that
the coated fibrous web (1) is guided for smoothing on both sides by two extended smoothing gaps.
Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass
die Faserstoffbahn (1) in den Glättspalten zumindest einseitig erwärmt wird.
Method according to claim 1, characterized in that
the fibrous web (1) is heated at least on one side in the calendering nips.
Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass
in den Glättspalten unterschiedliche Seiten der Faserstoffbahn (1) erwärmt werden.
A method according to claim 2, characterized in that
in the smoothing columns different sides of the fibrous web (1) are heated.
Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
die Faserstoffbahn (1) vor einem Glättspalt zumindest einseitig befeuchtet wird.
Method according to one of the preceding claims, characterized in that
the fibrous web (1) is moistened at least on one side before a calendering nip.
Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass die im unmittelbar folgenden Glättspalt erwärmte Seite der Faserstoffbahn (1) befeuchtet wird.Method according to Claim 4, characterized in that the side of the fibrous web (1) which has been heated in the immediately following calendering nip is moistened. Verfahren nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass
das Befeuchtungsaggregat (10, 11) eine Feuchtigkeitsmenge von weniger als 2g/m2, vorzugsweise von höchstens 1 g/m2, auf die Faserstoffbahn (1) aufbringt.
A method according to claim 4 or 5, characterized in that
the moistening unit (10, 11) applies a moisture quantity of less than 2 g / m 2 , preferably of at most 1 g / m 2 , to the fibrous web (1).
Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
die Faserstoffbahn (1) zwischen dem Streichen und dem Glätten getrocknet wird.
Method according to one of the preceding claims, characterized in that
the fibrous web (1) between the brushing and smoothing is dried.
Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
die Faserstoffbahn (1) vor dem Streichen durch zumindest einen, hinsichtlich des Pressdrucks im Glättspalt quer zur Bahnlaufrichtung (12) profilierbaren, aus zwei Glättwalzen (13) gebildeten Glättspalt geführt wird.
Method according to one of the preceding claims, characterized in that
the fibrous web (1) is guided before the coating by at least one, with respect to the pressing pressure in the calendering nip transversely to the web running direction (12) profilierbaren, formed from two smoothing rolls (13) smoothing nip.
Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
das während des Streichens auf die Faserstoffbahn (1) aufgetragene Streichmittel organische Strichpigmente enthält.
Method according to one of the preceding claims, characterized in that
the coating agent applied to the fibrous web (1) during coating comprises organic pigments.
Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
das während des Streichens auf die Faserstoffbahn (1) aufgetragene Streichmittel anorganische Strichpigmente enthält.
Method according to one of the preceding claims, characterized in that
the coating agent applied to the fibrous web (1) during coating comprises inorganic pigment pigments.
Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
das während des Streichens auf die Faserstoffbahn (1) aufgetragene Streichmittel eine Temperaturbeständigkeit von mindestens 200 °C, vorzugsweise von wenigstens 250 °C hat.
Method according to one of the preceding claims, characterized in that
the coating agent applied to the fibrous web (1) during coating has a temperature resistance of at least 200 ° C, preferably of at least 250 ° C.
Vorrichtung zur Glättung einer beidseitig gestrichenen Papier-, Karton- oder einer anderen Faserstoffbahn (1) in einer Maschine zur Herstellung und/oder Veredlung derselben, wobei die Faserstoffbahn (1) an wenigstens einem Streichaggregat (2,3) zum Streichen entlang und durch wenigstens eine Trocknungsvorrichtung (4) zum Trocknen der Faserstoffbahn (1) geführt wird, insbesondere nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
die Faserstoffbahn (1) nach der Trocknungsvorrichtung (4) zur Glättung auf beiden Seiten durch wenigstens zwei von einer zylindrischen Gegenwalze (5,6) und einer Glättwalze (7,8) mit einem flexiblen Walzenmantel gebildete, verlängerte Glättspalte geführt wird.
Apparatus for smoothing a paper, cardboard or other fibrous web (1) coated on both sides in a machine for producing and / or finishing the same, the fibrous web (1) being applied to at least one coater (2,3) for painting along and through at least a drying device (4) for drying the fibrous web (1) is guided, in particular according to one of the preceding claims, characterized in that
the fibrous web (1) after the drying device (4) for smoothing on both sides by at least two of a cylindrical counter-roller (5,6) and a smoothing roll (7,8) formed with a flexible roll shell, elongated Glättspalte is performed.
Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass
die Gegenwalze (5,6) beheizt ist.
Apparatus according to claim 12, characterized in that
the counter-roller (5,6) is heated.
Vorrichtung nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass
die beheizten Gegenwalzen (5,6) auf unterschiedlichen Seiten der Faserstoffbahn (1) angeordnet sind.
Apparatus according to claim 12 or 13, characterized in that
the heated counter-rollers (5, 6) are arranged on different sides of the fibrous web (1).
Vorrichtung nach einen der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass
beiden Seiten der Faserstoffbahn (1) ein Streichaggregat (2,3) zugeorndet ist.
Device according to one of claims 12 to 14, characterized in that
Both sides of the fibrous web (1) a coating unit (2,3) zugeorndet is.
Vorrichtung nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, dass
der Faserstoffbahn (1) vor einem Glättspalt eine Befeuchtungsvorrichtung (10,11) zugeordnet ist, welche die Faserstoffbahn (1) zumindest einseitig befeuchtet.
Device according to one of claims 12 to 15, characterized in that
the fibrous web (1) before a Glättspalt a moistening device (10,11) is assigned, which moistens the fibrous web (1) at least on one side.
Vorrichtung nach Anspruch 16, dadurch gekennzeichnet, dass
die Befeuchtungsvorrichtung (10,11) die im unmittelbar folgenden Glättspalt mit der beheizten Gegenwalze (5,6) in Kontakt kommende Seite der Faserstoffbahn (1) befeuchtet.
Apparatus according to claim 16, characterized in that
the moistening device (10, 11) moistening the side of the fibrous web (1) coming into contact with the heated counter-roller (5, 6) in the immediately following calendering nip.
Vorrichtung nach einem der Ansprüche 12 bis 17, dadurch gekennzeichnet, dass
die Faserstoffbahn (1) vor dem Streichaggregat (2,3) durch zumindest einen, hinsichtlich des Pressdrucks im Glättspalt quer zur Bahnlaufrichtung (12) profilierbaren Glättspalt geführt wird.
Device according to one of claims 12 to 17, characterized in that
the fibrous web (1) before the coating unit (2,3) by at least one, with respect to the pressing pressure in the calendering nip transversely to the web running direction (12) profiled smoothing nip is performed.
Vorrichtung nach einem der Ansprüche 12 bis 18, dadurch gekennzeichnet, dass
das während des Streichens auf die Faserstoffbahn (1) aufgetragene Streichmittel organische Strichpigmente enthält.
Device according to one of claims 12 to 18, characterized in that
the coating agent applied to the fibrous web (1) during coating comprises organic pigments.
Vorrichtung nach einem der Ansprüche 12 bis 18, dadurch gekennzeichnet, dass
das während des Streichens auf die Faserstoffbahn (1) aufgetragene Streichmittel anorganische Strichpigmente enthält.
Device according to one of claims 12 to 18, characterized in that
the coating agent applied to the fibrous web (1) during coating comprises inorganic pigment pigments.
Vorrichtung nach einem der Ansprüche 12 bis 20, dadurch gekennzeichnet, dass
das während des Streichens auf die Faserstoffbahn (1) aufgetragene Streichmittel eine Temperaturbeständigkeit von mindestens 200 °C, vorzugsweise von wenigstens 250 °C hat.
Device according to one of claims 12 to 20, characterized in that
the coating agent applied to the fibrous web (1) during coating has a temperature resistance of at least 200 ° C, preferably of at least 250 ° C.
EP05105829A 2004-12-24 2005-06-29 Method and arrangement for calendering a fibrous web coated on both sides Not-in-force EP1674615B1 (en)

Applications Claiming Priority (1)

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DE102004062618A DE102004062618A1 (en) 2004-12-24 2004-12-24 screed assembly

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EP1674615A1 true EP1674615A1 (en) 2006-06-28
EP1674615B1 EP1674615B1 (en) 2010-04-21

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EP1895050A1 (en) 2006-08-30 2008-03-05 Voith Patent GmbH Web moistening
EP2090694A1 (en) * 2008-02-12 2009-08-19 Voith Patent GmbH Combined coating application and smoothing method
WO2019115440A1 (en) * 2017-12-15 2019-06-20 Voith Patent Gmbh Web treatment

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DE102008041758A1 (en) 2008-09-02 2010-03-04 Voith Patent Gmbh Producing wood-free coated paper, comprises forming paper web by headbox, wire section, press and pre-dryer, applying blade top coat on the paper web on both side in further production course, and passing the web through soft calenders
EP4234809A3 (en) * 2017-02-03 2023-11-08 Voith Patent GmbH Web treatment
DE102022112687A1 (en) 2022-05-20 2023-11-23 Voith Patent Gmbh Method and machine for increasing the transverse elongation of a testliner paper web in high-speed paper machines

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EP1380686A1 (en) 2002-06-22 2004-01-14 Voith Paper Patent GmbH Extended nip arrangement and process for satinizing a material web
US20040099391A1 (en) 2002-11-26 2004-05-27 Bob Ching Process for producing super high bulk, light weight coated papers

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US5836242A (en) * 1994-06-15 1998-11-17 Albany Nordiskafilt Ab Calendering system including a belt having an adaptable web-contacting surface
WO2002029159A1 (en) 2000-10-02 2002-04-11 Metso Paper, Inc. Method and arrangement for calendering a web comprising a long-nip calender
WO2002103109A1 (en) 2001-06-18 2002-12-27 Metso Paper, Inc. Method, paper machine and base paper for the manufacture of lwc printing paper coated once
US20030150339A1 (en) 2002-02-14 2003-08-14 Voith Paper Patent Gmbh Wide nip calender arrangement and process for glazing a paper or cardboard web
EP1380686A1 (en) 2002-06-22 2004-01-14 Voith Paper Patent GmbH Extended nip arrangement and process for satinizing a material web
US20040099391A1 (en) 2002-11-26 2004-05-27 Bob Ching Process for producing super high bulk, light weight coated papers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1895050A1 (en) 2006-08-30 2008-03-05 Voith Patent GmbH Web moistening
EP2090694A1 (en) * 2008-02-12 2009-08-19 Voith Patent GmbH Combined coating application and smoothing method
WO2019115440A1 (en) * 2017-12-15 2019-06-20 Voith Patent Gmbh Web treatment

Also Published As

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DE102004062618A1 (en) 2006-07-06
DE502005009450D1 (en) 2010-06-02
EP1674615B1 (en) 2010-04-21
ATE465295T1 (en) 2010-05-15

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