WO2013037526A1 - Cylindre et procédé de fabrication d'un cylindre - Google Patents

Cylindre et procédé de fabrication d'un cylindre Download PDF

Info

Publication number
WO2013037526A1
WO2013037526A1 PCT/EP2012/063651 EP2012063651W WO2013037526A1 WO 2013037526 A1 WO2013037526 A1 WO 2013037526A1 EP 2012063651 W EP2012063651 W EP 2012063651W WO 2013037526 A1 WO2013037526 A1 WO 2013037526A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating
roller
cover layer
roll
producing
Prior art date
Application number
PCT/EP2012/063651
Other languages
German (de)
English (en)
Inventor
Sarah LIPPL
Michael Wokurek
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
Priority claimed from DE201110088685 external-priority patent/DE102011088685A1/de
Application filed by Voith Patent Gmbh filed Critical Voith Patent Gmbh
Publication of WO2013037526A1 publication Critical patent/WO2013037526A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/10—Suction rolls, e.g. couch rolls
    • D21F3/105—Covers thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/08—Pressure rolls
    • D21F3/083—Pressure rolls perforated
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/08—Pressure rolls
    • D21F3/086—Pressure rolls having a grooved surface

Definitions

  • the invention relates to a roller, in particular for use in a web processing and / or finishing machine such as a paper, board or tissue machine according to the preamble of claim 1 and a method for producing such a roller according to claim 6.
  • the press rolls or suction press rolls used are often coated with polyurethane.
  • the dewatering capacity of the press or Saugpresszenzenbezugs depends mainly on the surface design of the roll cover. Usually there are patterns of blind holes and grooves which provide an open volume into which the water squeezed out of the fibrous web can escape. In the case of Saugpresswalzen usually suction holes are still available, which pass through the roll shell. By means of the suction bores, for example, water is sucked out of the fibrous web by means of a suction box arranged in an inner volume of the roller.
  • a press roll according to the prior art is known, for example, from WO201 1/015386, where a combination of a press felt with a press roll cover and / or a suction roll cover for a paper machine is described.
  • the press roll cover is provided with a circumferential groove surface structure, wherein the proportion of an open surface on the entire surface of the press roll cover is in the range of 20% to 50%.
  • a suction press roll is described which, in addition to the circumferential groove surface structure having a hole arrangement with a plurality of the suction roll cover, is completed passing through the suction holes, wherein the proportion of an open surface on the total surface of the Saugwalzenbezugs in the range of 30% to 50%.
  • additional hole arrangements in the form of blind holes can be provided for both roll shapes.
  • the shape, size and arrangement of the surface forms is significantly involved in the quality of the final product.
  • a wrong choice of open area can lead to instability of the roll cover as well as to hydraulic or mechanical markings.
  • a disadvantage of the press and Saugpresswalzenbegorin known from the prior art is that they are polluted by prolonged use, whereby the surface forms are added by present in the fiber suspension fillers, fiber agglomerates and resin impurities and not more than open volume for the dewatering of the paper web To be available. As a result, the total drainage decreases. Furthermore, unwanted fluctuations in the moisture profile can occur due to uneven contamination. Mechanical cleaning devices provide as a remedy only insufficient results for the conditioning of roll covers, as for example by scrapers and brushes, the holes can not be cleaned, while the treatment of the roller with wash solutions for the entry of unwanted substances in the fibrous web and Rewetting can lead to the same.
  • the object of the invention is thus to further develop the known press or Saugpresswalzenberat so that the above-mentioned disadvantages can be avoided.
  • the object is achieved with respect to the roller by the characterizing features of claim 1 and with respect to the method for producing such a roller by the characterizing features of claim 6 respectively in conjunction with the generic features.
  • a coating is applied to the surface of the roller and / or on the surfaces of the formed in the roll cover surface forms, which is both water and dirt repellent. Due to the dirt-repellent function of the coating, the growth of the surface forms should be prevented.
  • the coating may comprise in whole or in part a mixture of a polyurethane or an epoxy resin with an additive.
  • a polyurethane or an epoxy resin with an additive are available at low cost and selectable according to the specific requirements of the respective roller position.
  • the additive may be selected from: silicon nanoparticles, PTFE particles (Teflon®), fluorine, silicone.
  • the coating may also comprise, wholly or partly, a reactive surface-active substance. Such substances are ready and can be applied with a minimum of effort on the roll surface or the surface shapes.
  • the surface shapes may advantageously be in the form of grooves, suction holes or blind holes or any combination thereof so that there is great flexibility with respect to the open area.
  • the coating can be applied to the surface by means of a spraying process, a dipping process, a rolling process or by brushing and / or introduced into the surface forms.
  • the invention is suitable for use on polyurethane rolls of common hardness and common surface roughness, as are commonly used in paper, board or tissue machines.
  • Suitable coating materials are both mixtures of a polyurethane or an epoxy resin with an additive and also reactive surface-active substances.
  • Suitable functional additives are PTFE particles (Teflon®), Silicunn nanoparticles, fluorine or silicones.
  • Coating of the roll surface and / or the surface forms with a mixture of Araldite MY500® (trifunctional epoxy resin) to 100 parts with a Amine hardener such as dodecylamine to 100 parts.
  • the mixing ratio may differ up to +/- 5% from the 1: 1 mixture.
  • the epoxy resin mixture results in a substantially nonpolar polymer having a lower surface energy than an untreated polymer.
  • Example 2 The coating is allowed to flash at room temperature and then burned at 120 ° C for 24 hours.
  • Example 2 The coating is allowed to flash at room temperature and then burned at 120 ° C for 24 hours.
  • This coating is also baked at 120 ° C for 24 hours. All these coatings have in common that they reduce the surface energy of the press or Saugpresswalzenbezugs. The reduction in surface energy causes water and dirt not to adhere to the surface of the cover and in the surface shapes, but are transported away quickly, so that over the life of the coating uniform dewatering performance of the roller is maintained.
  • the coating may be reapplied as part of a roll service. This is also possible if another surface shape, such as an additional groove, is introduced.

Landscapes

  • Paper (AREA)

Abstract

L'invention concerne un cylindre, en particulier pour une partie de presse d'une machine de fabrication et/ou de finissage d'une bande de matière fibreuse telle qu'une machine à papier, à carton ou à papier ouaté. Ledit cylindre comprend un corps de cylindre et au moins une couche de revêtement en polymère, en particulier en polyuréthane, disposée sur le corps, la couche de revêtement présentant une surface tournée vers la bande de matière fibreuse et des formes superficielles réalisées dans la surface. La surface et/ou les formes superficielles sont pourvues d'un revêtement hydrofuge et repoussant les poussières.
PCT/EP2012/063651 2011-09-16 2012-07-12 Cylindre et procédé de fabrication d'un cylindre WO2013037526A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102011082858.3 2011-09-16
DE102011082858 2011-09-16
DE201110088685 DE102011088685A1 (de) 2011-12-15 2011-12-15 Walze und Verfahren zur Herstellung einer Walze
DE102011088685.0 2011-12-15

Publications (1)

Publication Number Publication Date
WO2013037526A1 true WO2013037526A1 (fr) 2013-03-21

Family

ID=46506428

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/063651 WO2013037526A1 (fr) 2011-09-16 2012-07-12 Cylindre et procédé de fabrication d'un cylindre

Country Status (1)

Country Link
WO (1) WO2013037526A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10563354B2 (en) 2012-04-06 2020-02-18 Stowe Woodward Licensco Llc Hydrophobic and/or amphiphobic roll cover

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0282887A1 (fr) * 1987-03-17 1988-09-21 Felix Böttcher GmbH & Co. KG Rouleau de pression pour l'élimination de l'eau d'une feuille de papier
DE19651557A1 (de) * 1996-12-11 1998-06-18 Voith Sulzer Papiermasch Gmbh Preßmantel
DE10354507A1 (de) * 2003-11-21 2005-06-09 Voith Paper Patent Gmbh Beschichtung von mit einer Materialbahn in Kontakt tretende Einrichtungen einer Papiermaschine
WO2005111442A1 (fr) * 2004-05-19 2005-11-24 Metso Paper, Inc. Procede de prevention de salissure de rouleaux
WO2011015386A1 (fr) 2009-08-04 2011-02-10 Voith Patent Gmbh Combinaison d'un feutre de presse avec un revêtement de cylindre compresseur et/ou un revêtement de cylindre aspirant pour une machine à papier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0282887A1 (fr) * 1987-03-17 1988-09-21 Felix Böttcher GmbH & Co. KG Rouleau de pression pour l'élimination de l'eau d'une feuille de papier
DE19651557A1 (de) * 1996-12-11 1998-06-18 Voith Sulzer Papiermasch Gmbh Preßmantel
DE10354507A1 (de) * 2003-11-21 2005-06-09 Voith Paper Patent Gmbh Beschichtung von mit einer Materialbahn in Kontakt tretende Einrichtungen einer Papiermaschine
WO2005111442A1 (fr) * 2004-05-19 2005-11-24 Metso Paper, Inc. Procede de prevention de salissure de rouleaux
WO2011015386A1 (fr) 2009-08-04 2011-02-10 Voith Patent Gmbh Combinaison d'un feutre de presse avec un revêtement de cylindre compresseur et/ou un revêtement de cylindre aspirant pour une machine à papier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10563354B2 (en) 2012-04-06 2020-02-18 Stowe Woodward Licensco Llc Hydrophobic and/or amphiphobic roll cover

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