EP1467020A1 - Procédé de traitement d'une bande de carton - Google Patents

Procédé de traitement d'une bande de carton Download PDF

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Publication number
EP1467020A1
EP1467020A1 EP04101459A EP04101459A EP1467020A1 EP 1467020 A1 EP1467020 A1 EP 1467020A1 EP 04101459 A EP04101459 A EP 04101459A EP 04101459 A EP04101459 A EP 04101459A EP 1467020 A1 EP1467020 A1 EP 1467020A1
Authority
EP
European Patent Office
Prior art keywords
nip
web
wide nip
wide
carton
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
EP04101459A
Other languages
German (de)
English (en)
Other versions
EP1467020B1 (fr
Inventor
Rüdiger Dr. Kurtz
Jörg Dr. Rheims
Helmut Endler
Hermann Dr. Solbach
Stefan Seidenath
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.)
Voith Patent GmbH
Stora Enso Publication Paper GmbH and Co KG
Original Assignee
Stora Enso Publication Paper GmbH and Co KG
Voith Paper Patent 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32864454&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1467020(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stora Enso Publication Paper GmbH and Co KG, Voith Paper Patent GmbH filed Critical Stora Enso Publication Paper GmbH and Co KG
Publication of EP1467020A1 publication Critical patent/EP1467020A1/fr
Application granted granted Critical
Publication of EP1467020B1 publication Critical patent/EP1467020B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/006—Calenders; Smoothing apparatus with extended nips
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/30—Pretreatment of the paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
    • D21H25/14—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod the body being a casting drum, a heated roll or a calender

Definitions

  • the invention relates to a method for treating a Cardboard web that passed through a wide nip and then apply at least one stroke becomes.
  • Treating a cardboard web in a wide nip before applying a line is said to improve the printability of the web.
  • the cardboard web is often smoothed at high temperatures above the T G (glass transition temperature) in a way that conserves volume. This involves contour smoothing, ie the micro-roughness is preferably improved, which is generally determined using the so-called PPS method in accordance with ISO 8791/4.
  • the object of the invention is printability to improve the web.
  • the task is in a method of the aforementioned Art solved in that the web in the Breitnip to a micro roughness of maximum 6 ⁇ m (PPS-S10) pre-calendered and between the wide nip and the first Post-calendered line application in at least one nip becomes.
  • PPS-S10 micro roughness of maximum 6 ⁇ m
  • This treatment gives a surface quality the cardboard web, the roughness when applying the line equalized, so that they also with one later printing process takes the ink more evenly.
  • This is achieved with a relatively simple one Measure, namely that the path between the Breitnip and the application device for the coating color is, so to speak, satinized in between.
  • the wide nip mainly for micro roughness is responsible and improves this, the other Nip behind the wide nip but for the macro roughness, which is usually determined according to Bendtsen. possibly is the macro roughness for both the receptivity the coating color as well as the receptivity the ink more important than the micro roughness. If you look at the macro roughness before Line application reduced, you get better printability.
  • the cardboard web is preferably moistened before the wide nip. This gives you a better one in the wide nip Smoothness formation, i.e. a reduction in roughness.
  • the moistening can be done with means known per se take place, for example a steam humidifier, a Nozzle moistener or the like. The humidification should take place as close as possible to the wide nip.
  • the cardboard web is preferably opened in the wide nip heated to a temperature of at least 100 ° C. this applies at least for the page that will be printed on later should.
  • This side can also be heated more for example to at least 200 ° C.
  • the steam is going to Distribute evenly so that the same pressure everywhere prevails. When the web leaves the wide nip and the moisture can condense again Moisture distribution has been evened out.
  • the blanket of the cardboard web in front of the wide nip is adjusted by mass gluing so that it has a liquid absorption capacity according to COBB of a maximum of 50 g water / m 2 in a time of 60 s over an area of 100 cm 2 .
  • the area of 100 cm 2 generally has a circular shape when measured according to COBB according to EN 20535. If you glue the ceiling of the cardboard web so that it has the abovementioned liquid absorption capacity, then you create favorable conditions when applying the coat. The line remains on the surface and can develop very evenly there.
  • the gluing is carried out in the constant part of the board machine.
  • the glue is added to the fiber suspension as so-called bulk glue in the liquid state before the headbox, i.e. relatively early. Due to the long dwell time, the glue can spread onto the fiber material and be sufficiently distributed in the cardboard layer.
  • a coating color with a total mass of at least 15 g / m 2 is preferably applied. This will improve printability later. In the case of a multiple line, this information applies to the sum of all layers, i.e. the total line.
  • a coating color with a is preferably used Water retention of at least 50 s, in particular in the range from 50 to 80 s. This is measured Water retention capacity according to the subscription test procedure, defines e.g. in Sandas, Salminen, Eklund: Measurement of water retention coating colors, 1989 TAPPI Coating Conference, Proceedings 37-41.
  • Such a coating color contains binders and pigments. It is special well suited for folding boxboard, the full area to be printed.
  • the nip is preferably a soft nip between one hard roller and one with an elastic covering trained soft roller.
  • the soft nip practically only the macro roughness improved. Only one-sided smoothing takes place here. But in many cases this is enough, especially for folding boxboard, which is only printed on one side anyway shall be. The back can be relatively rough stay.
  • the nip is a hard nip between two hard ones Rolling is formed. In this case, the smoothness improved on both sides of the web.
  • the hard nip can be used as a calibration nip so that the web has a relatively uniform thickness over its width.
  • the invention is based on a preferred Embodiment in connection with the drawing described in more detail.
  • the single figure is a schematic representation of an arrangement for treating a cardboard web.
  • the figure shows a device 1 for treating a Cardboard web 2, hereinafter also referred to as "web" becomes.
  • a blanket of the board web is produced and provided with glue by a glue metering station 4 which is arranged in the constant part of the board machine before the headbox.
  • the size of the ceiling for example with a resin dispersion, is adjusted so that the ceiling has a liquid absorption capacity which is determined according to COBB and a maximum of 50 g water / m 2 in a time of 60 s on a circular area of 100 cm 2 having.
  • the web 2 treated in this way is passed through a wide nip 5 which is formed between a hard roller 6 with a smooth surface 7 and a circumferential jacket 8 of a shoe roller 9.
  • the jacket 8 is pressed against the roller 6 by a support shoe 10.
  • the support shoe 10 has a pressure surface 11, which can be provided in a manner not shown with devices for lubricating the contact surface between the jacket 8 and the support shoe 10, for example hydrostatic lubrication.
  • the shoe roller 9 is with a relatively stable jacket 8 formed, which rotates in the manner of a roller. Supporting elements, which support the jacket 8 during circulation not shown in detail.
  • the Breitnip 5 can also be used be formed in another way. Instead of the one shown Coat can also be easily used a tape that runs over several pulleys. Instead of Roller 6 can also be another back pressure element use, for example, another tape through a pressure shoe is supported.
  • the roller 6 can have heating channels 12 through which a Heat transfer medium, for example steam or hot oil, can be directed to the web 2 in the Breitnip 5 on the side that will later be painted and printed on to heat a temperature of at least 100 ° C.
  • a Heat transfer medium for example steam or hot oil
  • Heating devices may be provided, for example a Heating device 13, the induction from the inside or from the outside acts on the surface 7 of the roller 6.
  • a moistening device is as close as possible to the Breitnip 5 14 arranged, for example a Steam humidifier, a nozzle humidifier or the like. Here should only penetrate a layer close to the surface of the water to achieve a volume-saving smoothing (moisture gradient calendaring).
  • the moistening device applies an application amount of, for example, 1 to 5 g / m 2 to the web 2.
  • the web originating from the predrying of the board machine 3 need not yet be too dry.
  • the dampening device 14 Before the dampening device 14 applies moisture, for example, it can have a web moisture of at most 14%.
  • the web 2 led by a further nip 15, which in the present Embodiment designed as a soft nip is.
  • the soft nip 15 is formed between a hard one Roller 16 and a soft roller 17 with an elastic Surface covering 18.
  • nip can also be used hard nip, in which the nip by two hard rolling is formed.
  • the compressive stresses in wide nip 5 and nip 15 should be selected according to the following criteria. On the one hand, you want to achieve volume-friendly smoothing. On the other hand, the necessary compression should be brought about, which results in improved printability. In Breitnip 5, the compressive stresses are set to a maximum of 3 N / mm 2 . In the Nip 15 there should be a line load of a maximum of 60 N / mm, preferably even a maximum of 20 to 30 N / mm.
  • the web 2 After passing through the nip 15, the web 2 becomes one or several line application devices 19 (only one shown) supplied, in which the web 2, for example by an application nip 20 between two application rollers 21, 22 is guided.
  • Each applicator roller 21 22 is provided with an application device 23, 24, which is a coating color on the surface of the application rollers 21, 22 applies. Then if the web 2 the order nip 20 passes through, this coating color on the Transfer lane 2. There are one or more super and / or Reverse stroke orders possible.
  • the coating color is applied with a mass of at least 15 g / m 2 .
  • the water retention capacity of the coating color should be at least 75 s.
  • the coating color can contain binders and pigments.
  • a cardboard web 2 treated in this way is in particular well suited for offset printing.

Landscapes

  • Paper (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP04101459A 2003-04-11 2004-04-08 Procédé de traitement d'une bande de carton Expired - Lifetime EP1467020B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10316851A DE10316851B4 (de) 2003-04-11 2003-04-11 Verfahren zum Behandeln einer Kartonbahn
DE10316851 2003-04-11

Publications (2)

Publication Number Publication Date
EP1467020A1 true EP1467020A1 (fr) 2004-10-13
EP1467020B1 EP1467020B1 (fr) 2011-01-19

Family

ID=32864454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04101459A Expired - Lifetime EP1467020B1 (fr) 2003-04-11 2004-04-08 Procédé de traitement d'une bande de carton

Country Status (3)

Country Link
EP (1) EP1467020B1 (fr)
AT (1) ATE496170T1 (fr)
DE (2) DE10316851B4 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001098585A1 (fr) 2000-06-20 2001-12-27 Metso Paper, Inc. Procede de calandrage, plus specifiquement de precalandrage et calandre permettant de mettre en oeuvre ledit procede
WO2002000998A1 (fr) 2000-06-20 2002-01-03 Metso Paper, Inc. Procede de pre-calandrage, procede de finition et appareil de mise en oeuvre des procedes
WO2002103109A1 (fr) 2001-06-18 2002-12-27 Metso Paper, Inc. Procede, machine a papier et papier de base pour la fabrication de papier impression couche leger (lwc) recouvert une seule fois
WO2003050352A1 (fr) * 2001-12-12 2003-06-19 Metso Paper, Inc. Procede de finition pour carton

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001098585A1 (fr) 2000-06-20 2001-12-27 Metso Paper, Inc. Procede de calandrage, plus specifiquement de precalandrage et calandre permettant de mettre en oeuvre ledit procede
WO2002000998A1 (fr) 2000-06-20 2002-01-03 Metso Paper, Inc. Procede de pre-calandrage, procede de finition et appareil de mise en oeuvre des procedes
WO2002103109A1 (fr) 2001-06-18 2002-12-27 Metso Paper, Inc. Procede, machine a papier et papier de base pour la fabrication de papier impression couche leger (lwc) recouvert une seule fois
WO2003050352A1 (fr) * 2001-12-12 2003-06-19 Metso Paper, Inc. Procede de finition pour carton

Also Published As

Publication number Publication date
DE502004012118D1 (de) 2011-03-03
ATE496170T1 (de) 2011-02-15
DE10316851B4 (de) 2007-02-08
EP1467020B1 (fr) 2011-01-19
DE10316851A1 (de) 2005-01-05

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