EP1899530B1 - Procede et equipement pour la fabrication d'une bande fibreuse presentant une consistance elevee - Google Patents

Procede et equipement pour la fabrication d'une bande fibreuse presentant une consistance elevee Download PDF

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Publication number
EP1899530B1
EP1899530B1 EP06743533A EP06743533A EP1899530B1 EP 1899530 B1 EP1899530 B1 EP 1899530B1 EP 06743533 A EP06743533 A EP 06743533A EP 06743533 A EP06743533 A EP 06743533A EP 1899530 B1 EP1899530 B1 EP 1899530B1
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EP
European Patent Office
Prior art keywords
fibrous web
pressure
stage
mpa
heat treatment
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.)
Revoked
Application number
EP06743533A
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German (de)
English (en)
Other versions
EP1899530A1 (fr
Inventor
Pasi Ahonen
Markku Karlsson
Pauli Kytönen
Kari RÄISÄNEN
Tomi Ulmanen
Reijo PIETIKÄINEN
Erkki Ilmoniemi
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Valmet Technologies Oy
Original Assignee
Metso Paper Oy
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Filing date
Publication date
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Application filed by Metso Paper Oy filed Critical Metso Paper Oy
Publication of EP1899530A1 publication Critical patent/EP1899530A1/fr
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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

Definitions

  • the invention relates to a method of manufacturing a fibrous web, wherein at least one layer of the fibrous web is formed from stock with a solids content of over 1.5%, water being removed from the said fibrous web by first pressing the fibrous web to a solids content of about 45 to 65%, then evaporating the fibrous web to a solids content of about 75 to 95%, after which the fibrous web is treated by means of a compressive contact to increase its smoothness.
  • the invention also relates to equipment for manufacturing the fibrous web, wherein at least one layer of the fibrous web can be formed from stock with a solids content of over 1.5%, the equipment including a former and a press section for pressing the fibrous web to a solids content of about 45 to 65%, after which there is a drying section for evaporating the fibrous web to a solids content of about 75 to 95%, and after that there is equipment for treating the fibrous web by means of a compressive contact to increase its smoothness.
  • the fibrous web is converted into a web from stock formed by water and fibrous pulp, generally, at a solids content of about 0.5 to 1 %.
  • a web formation known as high consistency (HC) web formation takes place at a solids content of about 1 to 5%, mostly at a solids content of 2 to 4%.
  • the stock to be formed can either contain virgin fibre or recycled pulp or both.
  • Publication WO 97/45589 is also known in the prior art, disclosing a method of providing a fibrous web from high-consistency stock by means of a Fourdrinier-type former.
  • the publication mentions an advantage of the method being, among others, that in this way, a smooth outer surface is provided, meeting the requirements made of high-quality printing.
  • the object of the HC web formation is to reduce, already at the beginning, the amount of water removed from the fibrous web.
  • the major part of the structure of a paper and board machine is designed for dewatering either by pressing or evaporation. If the amount of water in the fibrous stock could already be reduced at the beginning, not compromising the printing properties of the fibrous web, however, it would be possible to considerably decrease the energy needed for making the fibrous web and to reduce the investment costs and the need for space of the equipment.
  • the present high-consistency formation technique an even distribution and a suitable orientation of fibres are more difficult than in the conventional web formation.
  • the solids content of the stock formed by water and the fibrous pulp increasing, the flow and the web formation process of the stock are more difficult, easily causing an uneven formation of the fibrous web, wherein the fibres are accumulated in clusters or flocks.
  • the fibres mostly tend to settle in the direction of the web's thickness (the Z direction).
  • the Z direction refers to the direction of thickness of the fibrous web
  • the X direction refers to the machine direction of the fibrous web
  • the Y direction refers to the direction transversal to the machine direction of the fibrous web.
  • the HC formation can be applied to single-layer products, wherein the entire web is formed from HC stock. It can also be applied to multi-layer products, as presented in the said references, whereby at least one layer is HC-formed. It is particularly preferable to use the web formed from HC stock in cardboards so that a layer inside the surface layers is made by HC formation. In that case, a coarser reject or recycled pulp can be included in the inner layers and the surfaces can preferably be manufactured from chemical pulp.
  • the HC formation can further be applied to coated cardboard and paper products, whereby any possible defects caused by the HC formation in the structure of the fibrous web and the surface quality are covered by a coating layer.
  • a fibrous web formed at high consistency is bulkier than normal and the fibres settle less parallel or in the in-plane direction than in a web that is formed from conventional stock with a solids content of 0.5 to 1.0%.
  • the number of fibres settling in the Z direction of the fibrous web in particular is higher. With the number of fibres of the fibrous web in the Z direction increasing, the bulk of the formed fibrous web increases. This increase can be from 2 to 5% for mechanical pulp and as much as 5 to 20% for chemical pulp containing CTMP. Furthermore, when the number of fibres settling in the Z direction increases, the strength, especially the Scott-Bond strength of the fibrous web also increases.
  • WO 00/31336 A relates to an apparatus and a method for pulp drying comprising a former section, wherein the pulp is dewatered to about 13 to 20 percent dry content. After a press section the formed web is dried to a dry content of at least 50 percent, advantageously about 60 percent.
  • the object of the invention is to provide a method and equipment for achieving a smooth and, if needed, glossy surface, which enables a good print quality for the web that is formed from the HC stock.
  • Another object of the invention is to maintain the good properties of the fibrous web provided by the HC formation, such as bulkiness and good strength properties in the Z direction.
  • a further object is to enable the use of stock with a solids content higher than before to form the web and to reduce any disadvantages related to the smoothness and possibly caused by the high solids content.
  • a special object is to provide a solution that helps reduce the energy consumed by the paper machine line per surface area of the fibrous web produced, while also producing fibrous web grades with a quality comparable to the conventional fibrous web grades that are made from stock with a low solids content.
  • one object is to influence the structure of the fibrous web in the Z direction so that a denser and smoother layer is provided on the surfaces, while the middle layer(s) remain bulkier than the surface layers, whereby excellent rigidity properties per grammage are obtained.
  • the object of the invention is to make an advantageous surface of the fibrous web in order to achieve the required properties of the printing surface.
  • Essential requirements of the printing surface include a good surface smoothness (such as Bendtsen and PPS) and surface contour and a fairly low variation in density and pore size (an even adsorption of the printing ink).
  • a special object is to maintain the bulkiness of the layer made by the HC formation and yet treat the outermost surface layer of the web intensively enough to achieve the required properties.
  • an important object of the invention is to make an advantageous fibrous web surface for the coating process.
  • a special object is to provide a small topographic variation in medium and high (> about 1mm) scales, whereby in the coating process, it is easier to apply a smooth layer of coating agent.
  • the smooth layer of coating agent dries more evenly, whereby the absorption properties of the coating layer and the print quality are good and even (a low tendency to mottle).
  • the method according to the invention is characterized in that, in the manufacturing process, the fibrous web is treated before the reeling stage by at least one pressure and heat treatment, wherein the forming pressure exerted on the fibrous web is not higher than 20 MPa.
  • the equipment according to the invention is characterized in that, in the manufacturing process, there is at least one set of pressure and heat treatment devices to treat the fibrous web before reeling, the devices being capable of treating the fibrous web at a forming pressure of less than 20 MPa.
  • the solution according to the invention can be used to convert HC stock into a fibrous web with a high-quality surface, the web being bulky and strong in the Z direction compared with corresponding wet formed fibrous webs.
  • the formation of the fibrous web is carried out by a pressure and heat treatment, wherein the factors causing the formation, such as the forming pressure, the time of action of the forming pressure, and the temperature are adjustable within a certain distance or zone.
  • the pressure and heat treatment equipment comprise means for the above-mentioned adjustments.
  • the fibrous web is treated in the machine direction of the fibrous web at least once to improve the smoothness of the fibrous web at three stages so that, at the first stage, the fibrous web is preheated, at the second stage, the actual pressing is carried out, smoothening the surface of the fibrous web and, at the third stage, the fibrous web is subjected to a stabilizing post-treatment.
  • the equipment has at least one set of pressure and heat treatment devices in the machine direction of the fibrous web to improve the smoothness of the fibrous web's surface, the pressure and heat treatment devices being adapted to three stages so that the first stage is arranged to preheat the fibrous web, the second stage is arranged to actually smoothen the fibrous web's surface by pressing, and the third stage is arranged as a stabilizing post-treatment of the fibrous web.
  • the pressure and heat treatment zone of the pressure and heat treatment devices is thus adapted to be three-stage so that, at each stage, the pressure effect (the value and/or the time of action of the pressure) is separately adjustable.
  • the pressure and heat treatment zone consists of one part only, wherein almost the same pressure influences the fibrous web.
  • the required qualities of the printing surface are attained by forming the final surface in the pressure and heat treatment either in connection with drying or immediately thereafter.
  • the pressure and heat treatment zone at least one surface of the fibrous web is in contact with a surface that is heated to 70-250°C.
  • the most significant advantage of the above-described pressure and heat treatment is its considerably longer time of action, whereby, because of the intensive heat supply, the surface parts of the fibrous web are quickly heated as early as at the first stage of the pressure and heat treatment. Heating evaporates water and softens and plasticizes the fibres in the surface layer.
  • the pressure charge applied at the second stage of the pressure and heat treatment effectively forms the plasticized surface layer; instead, the set of fibres deeper in the structure are mainly formed elastically, i.e., the structure is mostly restored. This elastic behaviour is possible because of the level of the prevailing moderate pressure charge, and partly also because of the increased inner steam pressure of the fibrous web, resisting the compression.
  • the pressure charge is reduced in a controlled way so that the inner steam pressure of the fibrous web cannot discharge too quickly.
  • the gradually adjusted pressure and heat treatment process described above enables a heat supply adequate for the formation of the fibrous web in relation to the compression pressure, which for its part contributes to the structure of the fibrous web in the Z direction. Because of the intensive heat supply and the light compression pressure used in the formation, a denser layer is provided on the surfaces of the fibrous web, while the middle section of the fibrous web remains bulkier.
  • the method and the equipment accomplish the object of manufacturing a fibrous web, the amount of energy required for its manufacturing process per unit area being lower than that of a corresponding fibrous web manufactured of conventional stock.
  • the said compression pressure is preferably less than 12.5MPa, more preferably less than 10MPa, more preferably less than 7.5MPa, most preferably less than 5MPa.
  • the equipment and the method according to the invention are suitable for manufacturing packing boards, such as folding boxboard and liquid packaging board and kraft liner, as well as certain printing paper grades.
  • the fibrous webs which comprise the target of the application, can either be coated or uncoated.
  • the fibrous web can be a coated or uncoated paper web with a grammage of 40 to 150 g/m 2 .
  • the fibrous web can also be a coated or uncoated board web with a grammage of over 100 g/m 2 .
  • Fig. 1 shows one possible embodiment of the pressure and heat treatment equipment for forming the fibrous web W.
  • This embodiment comprises a belt calender 1, which has a metal-built belt 2 extending around guide rolls 3, at least one of the guide rolls being adapted to be movable to adjust the tenseness or the tension of the belt 2.
  • the forming belt 2 travels past a roll 5, constituting a pressure and heat treatment zone N between the belt 2 and the roll 5.
  • the fibrous web W to be formed travels through the pressure and heat treatment zone N, at the same time being subjected to formation under a pressure momentum and the temperature, which act as a function of time.
  • the belt 2 can be heated or cooled by means of a heating/cooling device 6.
  • the dashed line 8 shows the distribution of the pressure that is formed, when only the tension of the belt 2 is working, i.e. the roll 4 is not making a nip with the belt or the roll 4 is fully off the said position.
  • the roll 5, as well as the roll 4, can be variable crown rolls or non-variable crown rolls, and they are selected from a group containing rolls with flexible surfaces, such as rolls with polymer, rubber or elastomer surfaces, shoe rolls, thermo-rolls, metal rolls, filled rolls, and composite rolls.
  • the press element can be a press element, which can be profiled or which forms a fixed profile and which may contain several sequential zones in the X or Y directions.
  • the press element can have a continuous or non-continuous surface.
  • the press element 4 can be arranged to be fixed or movable and it influences the length of the pressure and heat treatment zone or the tension of the belt 4.
  • Fig. 2 shows a possible compression pressure curve for the fibrous web as a function of time.
  • the pressure and heat treatment zone consists of three portions, the pressure effect of which (the value or the time of action of the pressure) is separately adjustable, as shown by the zones 21, 22, and 23 in Fig. 2 .
  • the figure shows how the fibrous web is pressed at three stages to improve the smoothness of the fibrous web's surface so that, at the first stage 21, the fibrous web is preheated, at the second stage 22, the actual pressing that smoothens the fibrous web's surface is carried out and, at the third stage 23, the post-treatment that stabilized the fibrous web is carried out.
  • the fibrous web is treated by at least one of these forming pressure and heat treatment sequences, but several treatments can also be carried out sequentially.
  • the pressure zone consists of one portion only, wherein almost the same pressure is acting (the stages 21, 22 and 23 are combined).
  • any other treating operation can be carried out between these formations, such as lining, coating, steaming, moistening, drying or the like.
  • the curve in Fig. 2 also shows by means of a dashed line another possible location for the position of the second stage 22 compared with the first stage 21 and the third stage 23.
  • the fibrous web can be influenced by a pressure of 0.05 to 0.5 MPa, the dwell time being from 20 to 100 ms.
  • the fibrous web can be heated during the moderately long dwell time to a temperature suitable for the formation, whereby the fibrous web can be formed plastically.
  • the advantage of such a long dwell time is that a reasonable temperature difference can be used between the heating belt 2 or the roll 5, 4 and the fibrous web W. In this way, a local overheating of the fibrous web possibly caused by too great a temperature difference is avoided.
  • the fibrous web is influenced by a pressure of 0.2 to 20 MPa, for example, the dwell time being 0.5 to 10 ms. Using a reasonably low forming pressure in this way, the good properties of the fibrous web related to the bulkiness can be maintained, but still have a sufficient effect on the smoothness and the gloss of the fibrous web.
  • the fibrous web is influenced by a pressure of 0.05 to 0.5 MPa, for example, the dwell time being from 20 to 100 ms.
  • the third phase equalizes the state of the fibrous web so that part of the elastic deformation of the fibrous web caused by the second stage 22 changes into a plastic deformation.
  • the inner steam pressure differences of the fibrous web and individual fibres can gradually become even during such a "release" without the pressure discharging too quickly and causing a weakening in the fibrous web's structure.
  • Fig. 3 shows another alternative forming pressure/temperature curve of the fibrous web as a function of time.
  • the differences here mainly comprise "rounded" transitions from one stage to another, whereby the parameters influencing the fibrous web do not change as quickly.
  • the transient has been slightly cut, whereby the dwell time at the maximum pressure used is slightly longer than in the situation according to Fig. 2 .
  • the fine adjustment of such changes in the shapes of the curve is mostly dependent on the special properties of the fibrous web; thus, the fine adjustment must always be adapted case-specifically.
  • Fig. 3 also shows an example of the heating of the fibrous web W compared with the forming pressure used.
  • the fibrous web is heated by means of a smooth contact surface, such as a drying cylinder or the cylinder of a Yankee dryer so that the total contact time is at least 1000 ms.
  • the pressure and heat treatment equipment comprise a metal belt conveyor, long nip calender, conventional belt calender, and Condebelt dryer or Yankee dryer.

Landscapes

  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Artificial Filaments (AREA)
  • Nonwoven Fabrics (AREA)

Claims (21)

  1. Procédé de fabrication d'une bande fibreuse (W), où au moins une couche de la bande fibreuse (W) est formée à partir d'une pâte avec une teneur en éléments solides de plus de 1,5%, l'eau étant retirée de ladite bande fibreuse (W) en pressant d'abord la bande fibreuse (W) à une teneur en éléments solides d'environ 45 à 65%, ensuite par évaporation de la bande fibreuse (W) à une teneur en éléments solides d'environ 75 à 95%, suivie par le traitement de la bande fibreuse (W) par un contact de pression pour augmenter son lissé,
    caractérisé en ce que, dans le processus de fabrication, la bande fibreuse (W) est traitée avant le stade de bobinage par au moins un traitement par la chaleur et par la pression, où la pression de formation exercée sur la bande fibreuse (W) ne dépasse pas 20 MPa.
  2. Procédé selon la revendication 1, caractérisé en ce que, dans le traitement par la chaleur et par la pression, la pression de formation, le temps d'action de la pression de formation et la température peuvent être ajustés.
  3. Procédé selon la revendication 1, caractérisé en ce que, dans le traitement par la chaleur et par la pression, la bande fibreuse (W) est formée au moins une fois dans la direction de déplacement de la bande fibreuse (W) pour augmenter le lissé de la surface de la bande fibreuse à trois stades (21, 22, 23) de telle sorte qu'au premier stade (21), la bande fibreuse (W) est préchauffée, au deuxième stade (22), la pression effective est mise en oeuvre, lissant la surface de la bande fibreuse (W) et, au troisième stade (23), le post-traitement de stabilisation de la bande fibreuse (W) est mis en oeuvre.
  4. Procédé selon la revendication 1, caractérisé en ce que ladite pression de formation est de préférence inférieure à 12,5 MPa, plus préférablement inférieure à 10 MPa, plus préférablement inférieure à 7,5 MPa, et le plus préférablement inférieure à 5 MPa.
  5. Procédé selon les revendications 1 et 3, caractérisé en ce que, audit premier stade (21), la bande fibreuse (W) subit une pression de 0,05 à 0,5 MPa, le temps de séjour étant de 20 à 100 ms.
  6. Procédé selon les revendications 1 et 3, caractérisé en ce que, audit deuxième stade (22), la bande fibreuse (W) subit une pression de 0,2 à 20 MPa, le temps de séjour étant de 0,5 à 10 ms.
  7. Procédé selon les revendications 1 et 3, caractérisé en ce que, audit troisième stade (23), la bande fibreuse (W) subit une pression de 0,05 à 0,5 MPa, le temps de séjour étant de 20 à 100 ms.
  8. Procédé selon les revendications 1 à 3, caractérisé en ce que, au stade de traitement par la chaleur et par la pression, au moins l'une des surfaces de la bande fibreuse (W) est en contact avec une surface qui est chauffée à une température allant de 70 à 250°C.
  9. Procédé selon la revendication 1, caractérisé en ce que, au stade d'évaporation du séchage, la bande fibreuse (W) est chauffée par une surface de contact lisse, comme un cylindre sécheur ou le cylindre d'un gros sécheur-frictionneur de telle sorte que le temps total de contact est de 1000 ms au moins.
  10. Procédé selon la revendication 1, caractérisé en ce que la bande fibreuse (W) est une bande de papier couché ou non couché avec un grammage de 40 à 150 g/m2.
  11. Procédé selon la revendication 1, caractérisé en ce que la bande fibreuse (W) est une bande de carton non couché avec un grammage de plus de 100 g/m2.
  12. Procédé de fabrication d'une bande fibreuse, d'une bande de carton en particulier, caractérisé en ce qu'au moins un traitement par la chaleur et par la pression selon la revendication 1 est mis en oeuvre avant le stade de couchage.
  13. Equipement pour la fabrication d'une bande fibreuse (W), où au moins une couche de la bande fibreuse (W) peut être formée à partir d'une pâte avec une teneur en éléments solides de plus de 1,5 %, l'équipement contenant un formeur et une section de presse pour presser la bande fibreuse (W) à une teneur en éléments solides d'environ 45 à 65%, suite à quoi il y a une section de séchage pour l'évaporation de la bande fibreuse à une teneur en éléments solides d'environ 75 à 95%, et après ceux-ci, il y a un équipement pour traiter la bande fibreuse (W) au moyen d'un contact de pression pour augmenter son lissé, caractérisé en ce que, dans le processus de fabrication, il y a au moins un ensemble de dispositifs de traitement par la chaleur et par la pression pour traiter la bande fibreuse (W) avant le bobinage, les dispositifs étant capables de traiter la bande fibreuse (W) à une pression de formation de moins de 20 MPa.
  14. Equipement selon la revendication 13, caractérisé en ce que les dispositifs de traitement par la chaleur et par la pression comprennent un moyen pour ajuster la pression de formation, le temps d'action de la pression de formation et la température.
  15. Equipement selon la revendication 13, caractérisé en ce que, dans la direction de déplacement de la bande fibreuse (W), il y a au moins un ensemble de dispositifs de traitement par la chaleur et par la pression (1, 2, 3, 4, 5, 6) pour augmenter le lissé de la surface de la bande fibreuse, les dispositifs de traitement par la chaleur et par la pression (1, 2, 3, 4, 5, 6) étant adaptés à trois stades (21, 22, 23) de telle sorte que le premier stade (21) soit agencé pour préchauffer la bande fibreuse (W), le deuxième stade (22) soit agencé pour lisser de manière effective la surface de la bande fibreuse par pression, et le troisième stade (23) soit agencé pour fournir un post-traitement de stabilisation pour la bande fibreuse (W).
  16. Equipement selon la revendication 13, caractérisé en ce que ladite pression de formation est de préférence inférieure à 12,5 MPa, plus préférablement inférieure à 10 MPa, plus préférablement inférieure à 7,5 MPa, et le plus préférablement inférieure à 5 MPa.
  17. Equipement selon les revendications 13 et 15, caractérisé en ce que, audit premier stade (21), la bande fibreuse (W) subit une pression en formation de 0,05 à 0,5 MPa par longueur, laquelle longueur correspond à un temps de séjour de 20 à 100 ms.
  18. Equipement selon les revendications 13 et 15, caractérisé en ce que, audit deuxième stade (22), la bande fibreuse (W) subit une pression en formation de 0,2 à 20 MPa par longueur, laquelle longueur correspond à un temps de séjour de 0,5 à 10 ms.
  19. Equipement selon les revendications 13 et 15, caractérisé en ce que, audit troisième stade (23), la bande fibreuse (W) subit une pression en formation de 0,05 à 0,5 MPa par longueur, laquelle longueur correspond à un temps de séjour de 20 à 100 ms.
  20. Equipement selon la revendication 13, caractérisé en ce que, dans la section de séchage, il y a une surface de contact lisse, comme un cylindre sécheur ou le cylindre d'un gros sécheur-frictionneur.
  21. Equipement selon la revendication 12, caractérisé en ce que les dispositifs de traitement par la chaleur et par la pression comprennent une calandre à courroie métallique (1), une calandre à pincement long, une calandre à courroie ordinaire, un sécheur Condebelt ou un sécheur à cylindre frictionneur.
EP06743533A 2005-05-25 2006-05-26 Procede et equipement pour la fabrication d'une bande fibreuse presentant une consistance elevee Revoked EP1899530B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20050555A FI119251B (fi) 2005-05-25 2005-05-25 Menetelmä ja laite korkeassa sakeudessa rainatun kuiturainan valmistamiseksi
PCT/FI2006/000165 WO2006125856A1 (fr) 2005-05-25 2006-05-26 Procede et equipement pour la fabrication d'une bande fibreuse presentant une consistance elevee

Publications (2)

Publication Number Publication Date
EP1899530A1 EP1899530A1 (fr) 2008-03-19
EP1899530B1 true EP1899530B1 (fr) 2009-03-11

Family

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Application Number Title Priority Date Filing Date
EP06743533A Revoked EP1899530B1 (fr) 2005-05-25 2006-05-26 Procede et equipement pour la fabrication d'une bande fibreuse presentant une consistance elevee

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EP (1) EP1899530B1 (fr)
CN (1) CN101171391B (fr)
AT (1) ATE425304T1 (fr)
DE (1) DE602006005665D1 (fr)
FI (1) FI119251B (fr)
WO (1) WO2006125856A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2682521A1 (fr) * 2012-07-04 2014-01-08 Metso Paper Inc. Procédé et dispositif pour le traitement d'une feuille fibreuse
FI127892B (en) * 2016-10-05 2019-05-15 Teknologian Tutkimuskeskus Vtt Oy Method and apparatus for producing elongated fiber products

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI982540A (fi) 1998-11-24 2000-05-25 Valmet Corp Laitteisto ja menetelmä sellun kuivaamiseksi
FI991108A (fi) * 1999-05-14 2000-11-15 Valmet Corp Menetelmä ja sovitelma kalanteroidun paperin tai kartongin valmistamis eksi
SE516821C2 (sv) * 1999-10-19 2002-03-05 Korsnaes Ab Obestruken pappers- eller kartongprodukt och förfarande för framställning därav
FI20000927A0 (fi) * 2000-04-18 2000-04-18 Valmet Corp Menetelmä kartonkirainan kalanteroimiseksi
BRPI0307269B1 (pt) 2002-01-29 2015-09-29 Metso Paper Inc "dispositivo de calandra para calandra uma textura fibrosa revestida e método para calandrar uma textura fribosa revestida ou não revestida com um dispositivo calandra"
FI116300B (fi) * 2002-09-09 2005-10-31 Metso Paper Inc Menetelmä sakeamassarainauksessa paperi- tai kartonkikoneella sekä vastaava paperi- tai kartonkikoneen sakeamassarainain

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Publication number Publication date
CN101171391A (zh) 2008-04-30
EP1899530A1 (fr) 2008-03-19
CN101171391B (zh) 2011-06-29
FI119251B (fi) 2008-09-15
FI20050555A (fi) 2006-11-26
WO2006125856A1 (fr) 2006-11-30
ATE425304T1 (de) 2009-03-15
DE602006005665D1 (de) 2009-04-23
FI20050555A0 (fi) 2005-05-25

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