EP2119827B1 - Procédé de calandrage d'une bande fibreuse et calandre - Google Patents

Procédé de calandrage d'une bande fibreuse et calandre Download PDF

Info

Publication number
EP2119827B1
EP2119827B1 EP09159967A EP09159967A EP2119827B1 EP 2119827 B1 EP2119827 B1 EP 2119827B1 EP 09159967 A EP09159967 A EP 09159967A EP 09159967 A EP09159967 A EP 09159967A EP 2119827 B1 EP2119827 B1 EP 2119827B1
Authority
EP
European Patent Office
Prior art keywords
web
liquid
group
steam
nip
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.)
Not-in-force
Application number
EP09159967A
Other languages
German (de)
English (en)
Other versions
EP2119827A1 (fr
Inventor
Frank Wegehaupt
Thomas Keuerleber
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 EP2119827A1 publication Critical patent/EP2119827A1/fr
Application granted granted Critical
Publication of EP2119827B1 publication Critical patent/EP2119827B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/0073—Accessories for calenders
    • D21G1/0093—Web conditioning devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G7/00—Damping devices

Definitions

  • the invention relates to a method for calendering a fibrous web, in particular a paper or board web, which is guided by a plurality of nips and there applied pressure and temperature, the web in a first group of nips with their first side each on a heated roller and in a second group of nips, each with its second side abutting a heated roll, wherein the web is moistened before the first nip of the first group, and wherein the web within the calendering process before the last or penultimate nip of the first group and before the first or second nip of the second group is moistened.
  • the invention relates to a calender arrangement with a plurality of nips formed by rollers, a web run path guided by the nips, wherein heated rolls are provided in a first group of nips on one side of the web path and in a second group of nips on the other side of the web path; and a first moistening device in front of the first nip of the first group, wherein within the calendering process a second moistening device is provided before the last or penultimate nip of the first group and a third moistening device in front of the first or second nip of the second group.
  • Such a method and calender arrangement are for example DE 10 2005 031 445 A1 or EP 1 541 757 A1 known.
  • the continuous paper web loses moisture.
  • an input moisture content of about 9 to 12% after calendering is reduced to a final moisture content of between 4 and 6%.
  • the final moisture content is crucial for the later printability.
  • the required final moisture determines the input moisture content of the paper web in the calender.
  • the simple procedure of increasing the input moisture so that the required final moisture content is obtained at the outlet of the calender is in many cases not feasible, because the risk of black satinification is obtained if the input moisture is too high.
  • the invention has for its object to achieve a good calendering result in a fibrous web.
  • This object is achieved in a method of the type mentioned in that the moistened the web within the calendering process before the last or penultimate nip of the first group on the side facing away from the heated roller.
  • the moistening before the last or penultimate nip of the first group causes an increase in the moisture of the web, wherein the moisture has a relatively long way and thus a longer time available to penetrate the web.
  • the web with the applied moisture still passes through at least one nip of the first group, so that the moisture is forced into the web.
  • This moisture is further enhanced if the web is moistened a second time before the first or second nip of the second group.
  • so much moisture can be applied to the web or enter into the web that the desired final moisture is achieved even if the moisture of the web before the first nip of the first group is chosen so that the risk of black satin not too large becomes.
  • the web is moistened in front of the first or second nip of the second group on the side facing the heated roll.
  • the second group If you want to smooth the other side of the web by this side is applied to the respective heated and smooth roll of nips. The smoothness effect is within certain limits the better, the moister this page is. If you humidify before the first or second nip of the group still on the side facing the heated roller, then this side is plasticized on its surface so that an excellent smoothness can be achieved.
  • liquid and steam provides the most extensive possibility of adjusting the moisture and the temperature of the web independently of the web. None of the media is needed to order the other.
  • the applied liquid also acts as a heat conductor between the applied steam and the web, so that the web can be further heated by the steam.
  • the steam at a time interval in the range of 1 ms to 200 ms, in particular in the range of 1 ms to 100 ms, after the application of the liquid or the solid on.
  • This time interval is so small that it is ensured that in any case, a sufficient amount of liquid remains on the surface of the web.
  • the liquid is sufficient to condense the steam to the desired extent.
  • the vapor is applied at a spatial distance in the range from 20 mm to 2000 mm, in particular from 30 mm to 1500 mm and preferably in the range from 50 mm to 500 mm behind the application of the liquid or solid.
  • the distance is chosen so that there is still enough liquid on the surface of the web when the steam is applied to achieve the desired effect.
  • the steam is applied as long as at least 75%, in particular at least 90%, of the liquid is present on the surface of the web. If one has applied a solid, then this solid will usually already be melted at the moment of applying the vapor and then forms a liquid, which is available here as a criterion for evaluation. At the indicated values, well over half of the applied liquid is available to condense vapor. The liquid is heated by the steam. Due to the relatively large amount of liquid, the liquid droplets that have formed on the surface of the web can then combine to form a film. This film, when passing through the following nip, results in a relatively even moistening of the web.
  • liquid is applied in the form of ice.
  • ice crystals that have been previously prepared. Such ice crystals will retain the state as a solid only for a relatively short time. They are converted back into a liquid very quickly by the subsequent vapor deposition. Due to the lower temperature compared with a temperature of the steam can then condense to an increased extent, so you can bring more moisture by steam and thus more heat in the web than usual.
  • the moisture application before the last or penultimate nip of the first group is mainly used for rewetting the web, so that the dry content at the entrance of the calender can be specifically influenced.
  • the dry content before the onset of calendering should be between 85% and 95%, preferably between 91% and 93%.
  • the web As the web transitions from the nips of the first group to the nips of the second group, it either passes through a change nip, which may be closed or open, or it travels a path between a first and a second roll stack. In any case, there is the risk that the web cools down considerably due to the relatively long free draft. For this reason, heating in front of the first or second nip of the second group is in the foreground. This heating is advantageous in order to achieve a good smoothing of the surface. In order to keep the input moisture content in the calender as low as possible, so that a black satin can be avoided, here the liquid entry should be only as large as it is necessary to achieve the desired web temperature. Low moisture penetration into the web avoids the risk of deposits on the heating roller.
  • Application units of the same type are preferably used at all moistening positions. This makes it possible to keep the apparatus design for humidification even within the calender small.
  • the moistening is carried out in the region of a guide roller.
  • the web In the area of a guide roll, the web is supported on one side by the guide roll. It can then be moistened on the other side, taking the distance between the vapor or liquid application and the track can be set and maintained relatively accurately. This results in a moisture application that is highly reproducible.
  • the moistening is performed at a time interval in the range from 1 ms to 200 ms, in particular in the range from 2 ms to 70 ms, before passing through the nip.
  • the moisture is available mainly in the area of the surface, so that you can achieve a volume gentle satinizing the web.
  • the web temperature after the vapor deposition is in the range of 80 to 100 ° C, in particular in the range of 85 to 90 ° C.
  • such high temperatures can not be realized by a pure steam application. But if you are Apply liquid before and then let the steam condense, then you can enter a sufficient amount of heat in the web.
  • the steam optionally serves to increase the rate of penetration by heating the web.
  • the liquid and / or the vapor is applied via slot nozzles.
  • a slot nozzle With a slot nozzle, a distance of less than 25 mm to the surface of the web can be achieved for liquid application. The distance can then be just as great as in steam application, which is very advantageous when using a common housing.
  • additives can, for example, support the penetration behavior, for example by reducing the surface tension of the liquid, or by performing a coating or assisting to homogenize the liquid application or to reduce disruptive deposits.
  • the liquid used is water, at least one coating color, at least one starch solution, at least one coating chemical, polyacrylic acid and its salts with alkali metal ions, alkaline earth metal ions, polyvinyl alcohol, polyethylene glycol, polypropylene glycols, polysulfonic acids and / or long-chain organic ethers.
  • the liquid is applied in an amount in the range from 0.1 to 8 g / m 2 , in particular in the range from 0.2 to 1.5 g / m 2, based on the area of the fibrous web.
  • the object is achieved in a calender arrangement of the type mentioned above in that the second moistening device is arranged on the side of the web facing away from the heated roller before the last or penultimate nip of the first group.
  • such a calender arrangement can achieve a relatively high final moisture content of the web without having to drive the web into the first nip of the calender with too high an initial moisture content.
  • a relatively high moisture penetration can take place because the web thereafter passes only the last or penultimate nip of the first group and then to the nips of the second group has a relatively long free train in which the web cools and undergo moisture penetration can.
  • the third moistening device then ensures that the web for the passage of the second nips receives the desired moisture at the respective surface to be smoothed.
  • the third moistening device may also be used to increase the temperature of the web at that surface.
  • each moistening device has a liquid or solids feed and a steam dispenser downstream along the web travel path.
  • a liquid or solid in the form of ice
  • This liquid serves as a nucleus or core for the condensation of the subsequently applied vapor.
  • the application of moisture by means of the steam is then no longer dependent on the temperature of the web, because the steam can condense on the previously applied moisture.
  • the liquid serves as a nucleus or condensation nucleus for the condensation of the vapor.
  • it serves as a heat conductor to transfer the heat from the steam to the surface of the web.
  • the vapor has the beneficial effect of reducing the viscosity and surface tension of the liquid so that it is easier to form a uniform film of liquid on the surface of the web. With a uniform film of liquid on the surface, the so moistened web can then pass through the nips into the calender, without the risk of damaging the web.
  • the liquid dispensing device and / or the vapor dispensing device preferably has a slot nozzle arrangement on.
  • a slot nozzle arrangement one can achieve a relatively small distance between the dispenser and the web, which is particularly advantageous if one wants to make liquid application and vapor deposition from a common housing out.
  • the slot nozzle is particularly advantageous for the liquid application.
  • Fig. 1 shows a device 1 for wetting a paper web 2.
  • the paper web 2 is used here as an example of a fibrous web. Instead of the paper web 2, of course, a cardboard or board web can be moistened.
  • the paper web 2 is moved in a running direction 3 shown by an arrow on the device 1 along. Where the paper web 2 is located, a web running path is assumed.
  • the device 1 has in the running direction 3, first a liquid dispensing device 4 and then a steam dispenser 5.
  • the liquid dispensing device 4 dispenses liquid in the form of spray jets 6 in the direction of the paper web 2, so that a liquid film 7 is formed.
  • the liquid film 7 does not yet have to be connected in the region of the liquid dispensing device 4. He may also be there in the form of individual droplets. As soon as the liquid has arrived on the surface of the paper web 2, it begins to penetrate into the interior of the paper web 2. However, this requires a certain amount of time.
  • the paper web 2 runs during this time past the steam dispensing device 5, the steam jets 8 in the direction of the paper web 2 outputs.
  • the steam transported by the steam jets 8 comes in contact with the liquid film 7, which has a lower temperature than the steam jets 8. Accordingly, the vapor condenses here and forms a further film referred to here as "steam film” 9, which, however, mixes with the liquid film 7.
  • steam film This approach has the advantage of being able to produce a sufficiently low temperature at the surface of the paper web 2 to cause the steam to condense. Accordingly, the heat energy contained in the steam can be almost completely used to heat the paper web 2 at the surface. Of the Steam is thus applied with a relatively high efficiency.
  • the liquid film 7 is heated by the steam. As a result, the surface tension and the viscosity of the liquid forming the liquid film 7 are reduced, so that the droplets possibly formed during the liquid application can combine to form a uniform layer. Due to the elevated temperature, the liquid can then penetrate more easily into the surface of the paper web, so that the moistening and heating of the paper web 2 is favored.
  • liquid and steam Due to the separate application of liquid and steam, these two media can be set independently. If the liquid dispensing device 4 and the vapor dispenser 5 are subdivided into zones perpendicular to the direction of travel 3 of the paper web, which can be controlled independently, it is possible to be able to profile the moisture across the width of the paper web. Since it is possible to set the vapor deposition and the liquid application largely independently of each other, the profiling is possible both in terms of temperature and humidity. By a zonal regulation of the liquid and vapor quantity, it is possible, for example, to apply liquid to dry areas to moisture and to damp areas to vapor when the steam causes greater drying in a subsequent process, for example passing through a nip of a calender. This is one targeted and energy-saving moisture profiling possible.
  • the liquid should be present as far as possible to the vapor deposition, so at least 75%, better still at least 90%, at the surface of the paper web 2. It should therefore only have penetrated into the paper web 2 to a small extent.
  • the liquid dispensing device 4 and the steam dispensing device are arranged as close as possible to each other, advantageously even in a common housing.
  • the spatial distance between the end of the liquid application and the start of the vapor deposition should be in the range of 20 mm to 2000 mm, in particular between 50 mm and 1500 mm and particularly preferably between 30 mm and 500 mm.
  • the time interval of the job to a moving paper web 2 should be in the range of 1 ms to 200 ms, preferably between 1 ms and 100 ms.
  • the web temperature is heated after the device 1 to temperatures in the range of 70 to 100 ° C, preferably at temperatures in the range of 80 to 90 ° C.
  • Fig. 2 schematically shows a calender arrangement with an arranged at an angle of about 45 ° to the vertical roll stack 11, which is arranged between a settlement 12 and a winding 13.
  • the calender 10 is thus arranged offline in the present case. But it can just as well be arranged online to a paper or coating machine, so that a settlement before the calender 10 is unnecessary.
  • the roll stack 11 has ten rolls 14-23 in the present case, of which the two end rolls 15, 23 are formed as deflection adjustment rolls. Also, two middle rollers 18, 19 are formed as deflection adjustment, but which can be actuated in two directions of action.
  • the rollers 14, 16, 18, 19, 21, 23 are designed as so-called “soft rollers", i. they have an elastic coating on their surface.
  • the rollers 15, 17, 20, 22 are formed as heated rollers.
  • nips 24-32 are formed, except for a change tip 28 all nips each between a hard roller 15, 17, 20, 22 and a soft roller 14, 16, 18, 19, 21, 23 are formed are.
  • the Konip 28 is ensured that the paper web 2 is guided along its web path so that it rests in a first group A of nips 24-27 with its first side 33 on a hard and heated roller 15, 17, while in a second group B of Nips 29-32 with their other Page 34 to the hard, heated rollers 20, 22 rests.
  • each one device 1 is now arranged.
  • a first moistening device 1a is arranged in front of the first nip 24 of the first group A.
  • a second moistening device 1b is arranged in front of the last nip 27 of the first group A.
  • a third moistening device 1c is arranged in front of the first nip 29 of the second group B.
  • a third moistening device 1c ' is arranged in front of the second nip 30 of the second group.
  • All moistening devices 1a, 1b, 1c, 1c ' may be of similar construction, i. they first apply spray jets 6 to the surface of the paper web 2 to form a liquid film 7, and then steam jets 8 to form a "vapor film" 9.
  • the first moistening device 1a in front of the first nip 24 of the first group A applies moisture on the side 33 of the paper web 2, which faces the subsequent heated roller 15.
  • This moistening is mainly used to supply heat to the paper web 2. This heating is necessary so that a smoothing of the surface of the paper web 2 in the subsequent nips 24-27 achieved can be.
  • the input moisture of the paper web 2 should be kept as low as possible prior to entering the calender assembly 10.
  • the liquid entry through the first moistening device 1a is here only as large as is necessary to achieve the desired web temperature. Accordingly, the liquid application with the spray jets 6 serves to apply about as much liquid that sufficient steam can condense to achieve the desired web temperature. The liquid application serves at this point mainly to improve the heat transfer of the steam to the paper web 2.
  • the distance of the moistening device 1a to the nip 24 should be between 1 ms and 200 ms, preferably between 2 ms and 70 ms.
  • the paper web should have a temperature of more than 60 ° C., preferably more than 75 ° C., immediately after the first nip 24.
  • the increase in moisture through the moistening device 1a should preferably be at most 3%, preferably even less than 2.5%.
  • the paper web 2 is calendered.
  • the side 33 is smoothed on the heated rollers 15, 17. A loss of moisture is practically unavoidable.
  • a second moistening device 1b is arranged in front of the last nip 27 of the first group A, with which amount of rewetting on the paper web 2 can be applied, which can significantly influence the input dry content in the calender 10.
  • the moistening takes place at this point on the hitherto not smoothed side 34 of the paper web 2, ie on the voltage applied to the soft roller 18 page.
  • the order quantity is selected such that no moistening of the already smoothed side 33 takes place.
  • the moistening takes place in the last nip 27 in front of the changeover tip 28 in order to run through at least one nip between this moistening and the first nip 29 of the second group B. This can avoid deposits of fillers on the subsequent heating rollers 20, 22.
  • the moistening may also take place two nips before the changeover tip 28.
  • the time interval of the second humidifier 1b and the following nip 27 is 1 ms to 200 ms, preferably 2 ms to 70 ms.
  • the increase in moisture through the second humidifier is much higher. It ranges up to 5%, so that the dry content of the paper web 2 prior to entry into the nips 29-32 of the second group B can be between 85% and 95%, preferably in the range of 91% to 93%.
  • the third moistening device 1c in front of the first or second nip 29, 30 of the second group B then serves primarily to heat the paper web 2, in order to be able to achieve a good smoothing of the side 34.
  • the liquid entry should be here only as large as is necessary to achieve the desired web temperature.
  • the distance of the third humidifying device 1c to the subsequent nip is also as small as stated above.
  • the moisture increase by the third moistening device should be less than 3%, preferably less than 2%.
  • the moistening device 1 can be subdivided transversely to the running direction of the paper web 2 into zones which can be controlled separately.
  • Preferred zone widths are in the range of 10 to 100 mm, preferably in the range of 20 mm maximum.
  • the moistening of the paper web 2 is preferably carried out from below to ensure that drops of condensed steam or water can not fall from above onto the paper web 2. If a solid application (ice) is used, this is preferably done from above onto the paper web 2.

Landscapes

  • Paper (AREA)

Claims (23)

  1. Procédé de calandrage d'une bande de matière fibreuse (2), en particulier d'une bande de papier ou de carton, qui est guidée à travers plusieurs lignes de contact (24 - 32) où elle est soumise à la pression et à la température, dans lequel la bande (2) est appliquée dans un premier groupe (A) de lignes de contact (24 - 27) par sa première face (33) chaque fois sur un rouleau chauffé (15, 17) et dans un deuxième groupe (B) de lignes de contact (29 - 32) chaque fois par sa deuxième face (34) sur un rouleau chauffé (20, 22), dans lequel la bande (2) est humidifiée avant la première ligne de contact (24) du premier groupe (A) et dans lequel la bande (2) est humidifiée au cours du processus de calandrage avant la dernière ou l'avant-dernière ligne de contact (26, 27) du premier groupe (A) et avant la première ou la deuxième ligne de contact (29, 30) du deuxième groupe (B), caractérisé en ce que l'on humidifie la bande (2) au cours du processus de calandrage avant la dernière ou l'avant-dernière ligne de contact (26, 27) du premier groupe (A) sur la face opposée au rouleau chauffé (17).
  2. Procédé selon la revendication 1, caractérisé en ce que l'on humidifie la bande (2) avant la première ou la deuxième ligne de contact (29, 30) du deuxième groupe (B) sur la face tournée vers le rouleau chauffé (20).
  3. Procédé selon l'une quelconque des revendications 1 à 2, caractérisé en ce que l'on applique d'abord un liquide ou une substance solide et ensuite de la vapeur sur la bande (2), dans laquelle on applique la vapeur aussi longtemps qu'il se trouve encore du liquide appliqué antérieurement sur la surface de la bande (2).
  4. Procédé selon la revendication 3, caractérisé en ce que l'on applique la vapeur avec un décalage de temps de l'ordre de 1 ms à 200 ms, en particulier de l'ordre de 1 ms à 100 ms, après l'application du liquide.
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que l'on applique la vapeur avec un décalage de distance de l'ordre de 20 mm à 2000 mm, en particulier de l'ordre de 30 mm à 1500 mm, et de préférence de l'ordre de 50 mm à 500 mm derrière l'application du liquide.
  6. Procédé selon l'une quelconque des revendications 3 à 5, caractérisé en ce que l'on applique la vapeur, aussi longtemps qu'il se trouve encore au moins 75 %, en particulier 90 % du liquide sur la surface de la bande de matière fibreuse.
  7. Procédé selon l'une quelconque des revendications 3 à 6, caractérisé en ce que l'on applique le liquide sous la forme de glace.
  8. Procédé selon l'une quelconque des revendications 3 à 7, caractérisé en ce que l'on applique avant la dernière ou l'avant-dernière ligne de contact (26, 27) du premier groupe (A) plus d'humidité qu'avant la première ligne de contact (24) du premier groupe (A).
  9. Procédé selon la revendication 8, caractérisé en ce que l'on applique avant la première ou la deuxième ligne de contact (29, 30) du deuxième groupe (B) moins d'humidité qu'avant la dernière ou l'avant-dernière ligne de contact (26, 27) du premier groupe (A).
  10. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce que l'on utilise à tous les postes d'humidification des unités d'application du même type.
  11. Procédé selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'on effectue l'humidification dans la région d'un rouleau de guidage.
  12. Procédé selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'on effectue l'humidification avec un décalage de temps de l'ordre de 1 ms à 200 ms, en particulier de l'ordre de 2 ms à 70 ms, avant la traversée de la ligne de contact.
  13. Procédé selon l'une quelconque des revendications 3 à 12, caractérisé en ce que l'on n'applique que la quantité de liquide qui est nécessaire pour une augmentation désirée de la température par l'application de vapeur qui suit.
  14. Procédé selon l'une quelconque des revendications 3 à 13, caractérisé en ce que la température de la bande se situe, après l'application de la vapeur, dans la plage de 80 à 100°C, en particulier dans la plage de 85 à 90°C.
  15. Procédé selon l'une quelconque des revendications 3 à 12, caractérisé en ce que l'on applique la quantité de liquide qui est nécessaire pour la ré-humidification de la bande (2), et on uniformise l'application de liquide par l'application de vapeur qui suit.
  16. Procédé selon l'une quelconque des revendications 3 à 15, caractérisé en ce que l'on applique le liquide et/ou la vapeur au moyen de buses fendues.
  17. Procédé selon l'une quelconque des revendications 3 à 16, caractérisé en ce que l'on applique un liquide comportant des additifs.
  18. Procédé selon l'une quelconque des revendications 3 à 17, caractérisé en ce que l'on utilise comme liquide l'eau, au moins une encre de couchage, au moins une solution d'amidon, au moins un produit chimique de revêtement, l'acide polyacrylique et des sels de celui-ci avec des ions de métaux alcalins, des ions de métaux alcalino-terreux, l'alcool polyvinylique, le polyéthylène glycol, des polypropylène glycols, des acides polysulfoniques et/ou des éthers organiques à chaîne longue.
  19. Procédé selon l'une quelconque des revendications 3 à 18, caractérisé en ce que l'on applique le liquide en une quantité de l'ordre de 0,1 à 8 g/m2, en particulier de l'ordre de 0,2 à 1,5 g/m2 rapportés à la surface de la bande de matière fibreuse (2).
  20. Agencement de calandre avec plusieurs lignes de contact (24 - 32) formées par des rouleaux (14 - 23), avec un chemin de défilement de bande mené à travers les lignes de contact (24 - 32), dans lequel il est prévu des rouleaux chauffés (15, 17, 20, 22) dans un premier groupe (A) des lignes de contact (24 - 27) sur un côté du chemin de défilement de bande et dans un deuxième groupe (B) des lignes de contact (29 - 32) sur l'autre côté du chemin de défilement de bande, et avec un premier dispositif d'humidification (1a) avant la première ligne de contact (24) du premier groupe (A), dans lequel il est prévu, au cours du processus de calandrage, un deuxième dispositif d'humidification (1b) avant la dernière ou l'avant-dernière ligne de contact (26, 27) du premier groupe (A) et un troisième dispositif d'humidification (1c, 1c') avant la première ou la deuxième ligne de contact (29, 30) du deuxième groupe (B), caractérisé en ce que le deuxième dispositif d'humidification (1b) est disposé avant la dernière ou l'avant-dernière ligne de contact (26, 27) du premier groupe (A) sur le côté de la bande (2) opposé au rouleau chauffé (17).
  21. Agencement de calandre selon la revendication 20, caractérisé en ce que chaque dispositif d'humidification (1, 1a, 1b, 1c 1c' présente un distributeur de liquide ou de substance solide (4) et un distributeur de vapeur (5) derrière celui-ci le long du chemin de défilement de la bande.
  22. Agencement de calandre selon la revendication 21, caractérisé en ce qu'une distance entre une sortie du distributeur de liquide (4) et une entrée du distributeur de vapeur (5) est choisie de telle manière qu'au moins une des conditions suivantes soit remplie:
    a) la distance (t1 se situe dans la plage de 20 mm à 2000 mm, en particulier dans la plage de 30 mm à 1500 mm et de préférence dans la plage de 50 mm à 500 mm;
    b) à la vitesse de fonctionnement, la bande de matière fibreuse (2) a besoin d'un temps de l'ordre de 1 ms à 200 ms, en particulier de l'ordre de 1 ms à 100 ms, depuis la sortie du dispositif de distribution de liquide (4) jusqu'à l'entrée du dispositif de distribution de vapeur (5);
    c) à l'entrée du dispositif de distribution de vapeur (5), il se trouve encore au moins 75 %, en particulier au moins 90 % du liquide (6) appliqué dans le dispositif de distribution de liquide encore sur la surface de la bande de matière fibreuse (2).
  23. Agencement de calandre selon l'une quelconque des revendications 21 à 22, caractérisé en ce que le dispositif de distribution de liquide (4) et/ou le dispositif de distribution de vapeur (5) présentent un agencement de buses fendues.
EP09159967A 2008-05-16 2009-05-12 Procédé de calandrage d'une bande fibreuse et calandre Not-in-force EP2119827B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008023925A DE102008023925A1 (de) 2008-05-16 2008-05-16 Verfahren zum Satinieren einer Faserstoffbahn und Kalanderanordnung

Publications (2)

Publication Number Publication Date
EP2119827A1 EP2119827A1 (fr) 2009-11-18
EP2119827B1 true EP2119827B1 (fr) 2012-05-09

Family

ID=40751050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09159967A Not-in-force EP2119827B1 (fr) 2008-05-16 2009-05-12 Procédé de calandrage d'une bande fibreuse et calandre

Country Status (3)

Country Link
EP (1) EP2119827B1 (fr)
AT (1) ATE557129T1 (fr)
DE (1) DE102008023925A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104495490A (zh) * 2014-12-10 2015-04-08 芜湖市万华塑料制品有限公司 电机定子绝缘纸用弯道送纸型加湿装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104539121B (zh) * 2014-12-10 2017-01-25 芜湖市万华塑料制品有限公司 电机定子绝缘纸用辊式送纸型加湿装置
CN106418645A (zh) * 2016-12-13 2017-02-22 安徽中烟再造烟叶科技有限责任公司 扬克缸缸面两端喷水降温装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19835989C5 (de) 1998-08-08 2010-04-01 V.I.B. Systems Gmbh Verfahren und Vorrichtung zur Online-Kalandrierung von Papier
DE10357938A1 (de) * 2003-12-11 2005-07-07 Voith Paper Patent Gmbh Verfahren zum Satinieren einer Bahn aus Papier oder Karton und Kalander
DE102005031445A1 (de) * 2005-07-04 2007-01-11 Voith Patent Gmbh Verfahren zum Behandeln einer Bahn aus Faserstoff und Kalander

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104495490A (zh) * 2014-12-10 2015-04-08 芜湖市万华塑料制品有限公司 电机定子绝缘纸用弯道送纸型加湿装置
CN104495490B (zh) * 2014-12-10 2016-11-09 芜湖市万华塑料制品有限公司 电机定子绝缘纸用弯道送纸型加湿装置

Also Published As

Publication number Publication date
EP2119827A1 (fr) 2009-11-18
DE102008023925A1 (de) 2009-11-19
ATE557129T1 (de) 2012-05-15

Similar Documents

Publication Publication Date Title
EP0609544B2 (fr) Procédé pour améliorer la brillance et/ou le lissé d'une bande
DE19826899A1 (de) Verfahren und Vorrichtung zur Online-Herstellung von SC-A-Papier
DE19835989B4 (de) Verfahren und Vorrichtung zur Online-Kalandrierung von Papier
EP1020559B1 (fr) Dispositif pour secher et lisser des bandes fibreuses
DE60104295T2 (de) Verfahren und vorrichtung zur steuerung der feuchtigkeit in einem mehrrollenkalander
EP2119827B1 (fr) Procédé de calandrage d'une bande fibreuse et calandre
DE69915629T2 (de) Verfahren und vorrichtung zum befeuchten einer bahn
DE10102199A1 (de) Verfahren zur Konditionierung eines umlaufenden Filzbandes
DE102005031444A1 (de) Vorrichtung zum Befeuchten einer Materialbahn
EP0957202B1 (fr) Procédé et dispositif pour la fabrication de papier SC-A online
DE10052187B4 (de) Verfahren zum Glätten einer Materialbahn sowie Kalander zur Durchführung des Verfahrens
EP1540078B1 (fr) Dispositif et procede de production et/ou traitement d'une bande de matiere fibreuse
EP2119826B1 (fr) Méthode et dispositif pour humidifier une bande de matière fibreuse
EP1541757B1 (fr) Procédé de satinage d'une bande de papier ou carton couchée et calandre
AT506010B1 (de) Verfahren und anordnung zur einflussnahme auf die eigenschaften einer faserbahn
DE102009026846A1 (de) Verfahren zur Steuerung des Trockengehaltes einer Materialbahn, insbesondere Faserstoffbahn in einer Pressenvorrichtung und Pressenvorrichtung
DE10228113A1 (de) Verfahren zum Umrüsten einer Maschine zur Herstellung und Behandlung einer Materialbahn vorzugsweise aus Papier oder Karton und entsprechend umgerüstete Maschine mit einer Kontaktlos-Auftragsvorrichtung anstelle einer Leimpresse
DE102017106047A1 (de) Bahnbehandlung
DE10217910A1 (de) Verfahren zum Behandeln einer Materialbahn und Kalander
DE102006051537A1 (de) Vorrichtung zum Bearbeiten einer Bahn aus Papier oder Karton
AT505349B1 (de) Verfahren und vorrichtung zur herstellung einer neuen papierqualität
EP1746203B1 (fr) Section de séchage
EP1876294B1 (fr) Procédé destiné au traitement d'une bande de papier brut ou de carton brut
DE102008040066A1 (de) Vorrichtung und Verfahren zur Herstellung von Dekorpapier
EP2492394A1 (fr) Calendre

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

17P Request for examination filed

Effective date: 20100518

17Q First examination report despatched

Effective date: 20100610

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RTI1 Title (correction)

Free format text: METHOD OF CALENDERING A FIBROUS WEB AND CALENDER

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 557129

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120515

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502009003462

Country of ref document: DE

Effective date: 20120705

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20120509

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

Effective date: 20120502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120909

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120809

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

BERE Be: lapsed

Owner name: VOITH PATENT G.M.B.H.

Effective date: 20120531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120910

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120810

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120531

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130307

26N No opposition filed

Effective date: 20130212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120820

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120512

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120709

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502009003462

Country of ref document: DE

Effective date: 20130212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120809

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20130522

Year of fee payment: 5

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130512

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130531

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130512

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120512

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090512

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502009003462

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502009003462

Country of ref document: DE

Effective date: 20141202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141202

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 557129

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140512

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20150513

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140512

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160512