EP2278068A1 - Procédé et arrangement pour fabriquer du papier ou carton couché - Google Patents

Procédé et arrangement pour fabriquer du papier ou carton couché Download PDF

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Publication number
EP2278068A1
EP2278068A1 EP10165211A EP10165211A EP2278068A1 EP 2278068 A1 EP2278068 A1 EP 2278068A1 EP 10165211 A EP10165211 A EP 10165211A EP 10165211 A EP10165211 A EP 10165211A EP 2278068 A1 EP2278068 A1 EP 2278068A1
Authority
EP
European Patent Office
Prior art keywords
web
station
roller
coating
calender
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.)
Withdrawn
Application number
EP10165211A
Other languages
German (de)
English (en)
Inventor
Josef Kohnen
Ulrich Rothfuss
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
Original Assignee
Voith 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
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2278068A1 publication Critical patent/EP2278068A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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 producing a coated paper or cardboard, wherein a running web is produced in a paper or board machine and wound into rolls at the end in a first reeling station, wherein then the roll is transported to an offline coater, the Roll there unwound in a first unwinding station and coated the web over a coating device with coating color and finally wound again in a second Aufrollstation to a roll.
  • the invention also relates to an arrangement for producing a coated paper or cardboard comprising a paper or board machine with a first station for reeling on the web and an offline coater with a coating device, a first unwinding station and a second reel station for the web, via a reel transporting device is transportable from the first reeling station to the first unwinding station.
  • coating units also commonly referred to as coating devices, which are arranged either inline with the paper or board machine, ie before their reeling station, or separately, ie Are placed offline behind or next to the paper or board machine.
  • the coating devices need a separate unrolling and Aufrollstation.
  • Coating devices which may be mentioned by way of example are size presses, blade coater or film coater.
  • Calenders are well known and have many embodiments. In general, it can be said that at least two circumferential surfaces are pressed against each other and a web is guided through these contact surfaces, which are also called nip. As a rule, these circumferential surfaces are roll surfaces, but they can also be circumferential metal or plastic strips, which are pressed against a counter roll, for example via a shoe.
  • the roll surfaces are often represented in a pairing in which the one surface is relatively soft, for example, provided with an elastomeric coating, and the other hard, for example, from a high-gloss metal, and heated to over 100 ° C. At times, however, so-called calenders are also encountered, in which both surfaces are made of metal.
  • calenders are generally at the end of the paper or board machine prior to rewinding when the coater is subsequently placed offline.
  • the object is achieved in that the web between the first unwinding station and the coating device is acted upon in at least one Kalandernip with pressure and temperature. Because of the time spent in transit from the first reeling station to the first unwinding station in ambient temperature, the web has cooled significantly. If the calender stood in front of the paper or board machine, the web would be smoothed at least above 70 ° C. In this case, the web is substantially tempered through the entire thickness and correspondingly easy to compact. By contrast, a web coming from the unwinding station of an offline coater has a temperature of generally below 40 ° C.
  • the web is subjected to steam before the at least one calender nip.
  • the web surface heat and moisture is supplied, which has a particularly beneficial effect on the smoothness.
  • the steaming is supported by the fact that the web is relatively cold at the time of vapor deposition. As a result, more vapor can condense and wet the web surface than would be possible, for example, at the end of the paper or board machine.
  • a steam application rate of 0.5 to 3.0 g / m 2 per web side has been determined in experiments as a suitable amount.
  • Moisture penetrates to a small depth in the surface of the web and improves the smoothness effect, taking advantage of the well-known Moisture Gradiend effect. With this improvement in smoothness, the line loads in the calender can again be reduced for the desired results, which also has a correspondingly positive effect on the volume retention.
  • both sides of the web are sufficiently smoothed on the surface and can be painted.
  • the nips can be of different types, for example, a wide nip with a plastic band which is pressed by means of a shoe against a counter-roller, followed by a relatively hard and short nip, which takes on the task of calibration.
  • At least one of the rollers forming the nip has a profile correction device and the web in its thickness profile is regulated transversely to the web running direction.
  • a thickness profile scanner is used, which influences the profile correction device of the roller via a control system.
  • a profile correcting device supporting elements in a so-called bending compensating roll or induction heating shoes or hot-cold air nozzles are preferred on the roll surface. With these devices, the necessary diameter deformations can be set very accurately as actuators on the thickness profile of the web.
  • the web is guided through at least one nip whose contact length with the web is more than 40 mm.
  • the heat transfer time is so long that a melting of the entire web surface is made absolutely safe even at moderate and thus energy-saving surface temperatures of the heating roller between 120 ° C and 150 ° C for most types of paper or board.
  • the object of the invention is achieved in that a calender is provided between the first unwind station and the coating device.
  • the calender device further comprises a Umfahrungsvorraum for the web.
  • a Umfahrungsvorraum for the web This gives the producer the opportunity to also drive alternative paper or board types.
  • the paper or board machine 2 is shown schematically. Underneath, one recognizes the offline coating machine 3.
  • the paper or board machine 2 adapted in this exemplary embodiment for WFC paper by way of example, is composed, as usual, of a wire section 10, a press section 11, a drying section 12 and a reeling station 13.1. On the otherwise used calender before the Aufrollstation 13.1 is omitted in this preferred embodiment.
  • an optional coater 15 is provided, followed by a dryer 17 and possibly other aggregates, until the web 4 arrives at a second reel station 13.2 where it is rewound into a reel 5. Another calender before reeling 13.2 is dispensed with in this case.
  • a calender 6 is installed between the unwind station 14 and the coating device 15, a calender 6 is installed. There, the web 4 is prepared for the coating order. It is smoothed in calender chips 6.1, 6.2 in such a way that each web page rests once on a hot roller 8, while in each case the mating roll is designed as Biegeeinstell- or shoe roll 9 and initiates the profiled pressure on the web 4. Since the web is relatively cool at this processing time, only the surface is melted and compacted. In this way, you can produce the smoothness required for the brushing extremely volume-saving.
  • profiling 9 in this case, a bendable roll, the thickness profile can be accurately adjusted.
  • inductive heating shoes or hot-cold air nozzles are also conceivable, which influence the heated roll and its diameter over the width of the web 4.
  • the moisture profile could additionally be influenced.
  • a control of these actuators can be ensured if the thickness, moisture, gloss or smoothness profile is measured by means of a commercially available scanner 19 and the actuators are set by a control device, not shown.
  • nip 6.1, 6.2 is very long, so the roller 9 is a shoe roll.
  • the heating roller 8 partially wrap-around Antikband made of metal or plastic could be used in a manner not shown, but known to those skilled in the art.
  • the nip width should be at least 40 mm, more preferably more than 60 mm in the web running direction
  • bypass 18 (dashed web path) is provided.

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  • Paper (AREA)
EP10165211A 2009-07-14 2010-06-08 Procédé et arrangement pour fabriquer du papier ou carton couché Withdrawn EP2278068A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910027691 DE102009027691A1 (de) 2009-07-14 2009-07-14 Verfahren und Anordnung zur Herstellung eines gestrichen Papiers oder Kartons

Publications (1)

Publication Number Publication Date
EP2278068A1 true EP2278068A1 (fr) 2011-01-26

Family

ID=42335122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10165211A Withdrawn EP2278068A1 (fr) 2009-07-14 2010-06-08 Procédé et arrangement pour fabriquer du papier ou carton couché

Country Status (2)

Country Link
EP (1) EP2278068A1 (fr)
DE (1) DE102009027691A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102371230A (zh) * 2011-09-27 2012-03-14 苗小胜 多功能无底涂涂布机

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
WO2003023138A1 (fr) * 2001-09-12 2003-03-20 Metso Paper, Inc. Procede et concept de fabrication d'une feuille continue de fibres, notamment d'une feuille continue de carton
EP1398414A2 (fr) * 2002-08-30 2004-03-17 Voith Paper Patent GmbH Aménagement de calandre à pinçage prolongé et procédé de satinage d'une bande de papier ou de carton
EP1285126B1 (fr) 2000-02-25 2004-09-22 Metso Paper, Inc. Procede et dispositif de fabrication d'une bande de papier ou de carton dans lesquels le dispositif de finition peut etre derive

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1285126B1 (fr) 2000-02-25 2004-09-22 Metso Paper, Inc. Procede et dispositif de fabrication d'une bande de papier ou de carton dans lesquels le dispositif de finition peut etre derive
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
WO2003023138A1 (fr) * 2001-09-12 2003-03-20 Metso Paper, Inc. Procede et concept de fabrication d'une feuille continue de fibres, notamment d'une feuille continue de carton
EP1398414A2 (fr) * 2002-08-30 2004-03-17 Voith Paper Patent GmbH Aménagement de calandre à pinçage prolongé et procédé de satinage d'une bande de papier ou de carton

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102371230A (zh) * 2011-09-27 2012-03-14 苗小胜 多功能无底涂涂布机
CN102371230B (zh) * 2011-09-27 2013-11-06 苗小胜 多功能无底涂涂布机

Also Published As

Publication number Publication date
DE102009027691A1 (de) 2011-01-20

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