EP2576900B2 - Procédé pour produire une bande de matière fibreuse multicouche revêtue - Google Patents

Procédé pour produire une bande de matière fibreuse multicouche revêtue Download PDF

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Publication number
EP2576900B2
EP2576900B2 EP11721321.5A EP11721321A EP2576900B2 EP 2576900 B2 EP2576900 B2 EP 2576900B2 EP 11721321 A EP11721321 A EP 11721321A EP 2576900 B2 EP2576900 B2 EP 2576900B2
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Prior art keywords
layer
web
coated
drying
accordance
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EP11721321.5A
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German (de)
English (en)
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EP2576900A1 (fr
EP2576900B1 (fr
Inventor
Guido Klaunzer
Stephan Hampe
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Voith Patent GmbH
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Voith Patent GmbH
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
    • D21F9/006—Complete machines for making continuous webs of paper of the twin-wire type paper or board consisting of two or more layers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers
    • 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
    • D21F3/0209—Wet presses with extended press nip
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
    • D21F5/044—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices using air hoods over the cylinders
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/0066—Calenders; Smoothing apparatus using a special calendering belt
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/009—Apparatus for glaze-coating paper webs
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper
    • D21H23/48—Curtain coaters
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply

Definitions

  • the invention relates to a method for the production of a coated, three-layer fibrous web, in particular packaging paper or cardboard web, in which a material flow is first generated, which is then successively followed by three material flows, at least one wire section to form a three-layer fibrous web, a press section, a dryer section with dryer groups and is then fed to a reel.
  • the document WO2006 / 024695A1 discloses a process unit with metal belt for smoothing paper webs.
  • the multi-layer coating of paper or cardboard is the subject of the document EP1249533A1 .
  • Cardboard and packaging papers are usually dried with drying cylinders of a single-row and / or two-row drying section during their production in the paper machines.
  • a disadvantage is the large amount of space required for such drying sections and also the limited drying capacity. Especially with regard to the required machine speeds, which are becoming ever higher, the drying zones must be made longer in relation to the total machine length.
  • the smoothness of the cardboard to be produced or the packaging paper is usually produced in the production of cardboard with the help of conventional calenders, such as hard-nip calenders with high maximum pressures and short dwell times of the fibrous web in the nip.
  • conventional calenders such as hard-nip calenders with high maximum pressures and short dwell times of the fibrous web in the nip.
  • the disadvantage of this technology is the loss of web thickness.
  • SoftNip calenders soft roll covers are used to increase the dwell time in the nip.
  • the disadvantage here is the slight increase in smoothness and the loss of volume.
  • Other conventional smoothing processes, such as wide nip calendering or shoe smoothing use soft covers on the unheated roller.
  • a disadvantage here is also only a slight increase in smoothness with a simultaneous loss of volume.
  • the fibrous web or packaging paper or cardboard web is usually also coated with a pigment coating. This achieves the whiteness, smoothness, gloss and opacity of the web. This also increases the printability of the web material, so that it can serve as an information and advertising medium.
  • printing takes place primarily in the form of offset printing and gravure printing.
  • the fibrous web is coated at least once on the cover side.
  • the reverse side can be left uncoated or is also coated at least once. Coats of up to 80g / m 2 are applied per side.
  • conventional coating units such as film presses, coaters with roller application (LDTA applicators with a long exposure time for the coating medium), coaters with free-jet nozzles, or with application units with a short dwell time of the medium on the web (so-called short dwell time applicators or SDTA ).
  • the fiber web produced in three layers is pre-smoothed with a belt calender within or after an after-dryer section and then the top layer of the fiber web is coated with a white pigment-containing coating layer using a curtain applicator and then dried and that in the press section (II ) at least one smooth roller is used, which acts at least on the top layer.
  • the belt used to pre-smooth the fibrous web consists of more than 70% plastic.
  • the temperature of the belt surface in contact with the fibrous web is more than 80 ° C.
  • Another advantage is that because of the white pigment-containing curtain coating, which is very even and covers well, only a low weight per unit area of the white and expensive fiber layer (top layer) is required. This saves expensive raw materials without the lower fiber layers showing through and without the print quality worsens.
  • the method according to the invention offers the possibility of producing the fibrous web in three layers, namely back layer, middle layer, top layer - depending on the desired application.
  • White or bleached and / or deinked and / or wood-free fibers, which are expensive, are provided for the top layer. It is all the more advantageous that these substances can be saved to a large extent because the white coating described is applied to the top layer with the help of a curtain coating. In certain cases (e.g. with white multiple lines) the white top layer can even be completely replaced with the white line layer.
  • a curtain coater applies the application medium in a ratio of 1: 1, i.e. without excess, onto the running fibrous web during its manufacturing process. So only the amount of coating material or pigment-containing application medium that is to remain there is applied to the web. This saves the doctoring and the corresponding doctor devices.
  • the at least one coating layer can be applied with a single or multi-layer curtain applicator in the form of a slot die or a so-called sliding layer nozzle.
  • a condensation press drying is provided within the pre-dryer section. This could also be carried out after the dewatering in the press section and / or in an after-dryer section. This offers the advantage of an increased evaporation rate of more than 40 kg / m 2 h and the smoothing of the fibrous web.
  • This type of drying with which conventional drying cylinders can be partially saved, should take place in an area in which the web has a dry content of more than 50% to about 90%, preferably more than 55%. At least one such drying should, as said, preferably be carried out within the pre-dryer section, it also being conceivable to also provide this in the after-dryer section.
  • the mentioned high evaporation rate and smoothness come about because the fibrous web is guided with one side over a preferably steam-heated cylinder and with the other side over a sieve and an overlying impermeable covering.
  • a contact pressure against the cylinder is exerted in this section with a pressure hood covering part of the outer circumference of the cylinder.
  • a particular advantage is an improved heat transfer from the steam interior of the drying cylinder to the fibrous web.
  • the drying speed can be increased without the need for machine extensions.
  • the paper strength and the surface properties are increased despite the possible saving of raw fibers.
  • the application of starch can also be reduced.
  • the production method according to the invention can be made even more advantageous in that at the beginning of the production process for the formation of the top layer of the three-layer fibrous web, a fine material is fed into the headbox. This results in a very smooth top layer, which forms a particularly good basis for the subsequent coating layer and which results in a very even covering of the fibrous web.
  • the headbox can also be designed as a perforated roll headbox or as a hydraulic headbox. At least one headbox is optionally equipped with a dilution water control.
  • the advantage of this is that a weight per unit area profiling is achieved without adjusting the lip and thus the fiber orientation.
  • the middle layer is preferably equipped with a dilution water control with the advantage that the cross-sectional weight profile of the entire cardboard web can be influenced most strongly by the layer with the largest proportion of the total weight per unit area (middle layer).
  • All known shape combinations can be used in the wire section. It is preferred to use Fourdrinier wire, but also combinations of Fourdrinier wire and hybrid formers, for example the Duo D or Duo DK sold by the applicant's company, also as combinations of at least one gap former and at least one Fourdrinier wire. It is advantageous if the said former is equipped with a sieve shaking device, for example with the Duo Shake sold by the applicant's company. In the case of multi-layer concepts, this should preferably be provided for the layer with the highest layer weight per unit area, such as the middle ply.
  • press combinations can be used in the press section.
  • the press concepts can be designed with a closed or open web guide.
  • the framing, i.e. the supporting frames for the presses, can be designed as so-called cantilevers. It is also possible to use sewn or seamless felts in the press section. With the mentioned press concepts, dry contents of up to 57% can be achieved.
  • At least one smooth roller is used in the press section, which acts at least on the top layer.
  • This can be done with the help of a known tandem press with three felts and a smooth roller, which is usually arranged at the bottom, or with a so-called offset press, in which a nip is carried out without any covering.
  • This measure also contributes to a smoother top layer, which in turn can be coated more evenly.
  • the web is subjected to condensation press smoothing after predrying and before a later coating with the at least one white coating layer.
  • condensation press smoothing works in a similar way to the condensation press drying, whereby the fibrous web is guided over a heated cylinder and brought into direct contact with a metal belt running over the cylinder, over which there is a pressure hood. A sieve or a covering is not available here.
  • the cylinder (drying cylinder or smoothing cylinder) is preferably heated with steam in each case, the cylinder surface reaching a temperature between 60 and 250 ° C, preferably 130 to 190 ° C.
  • the method according to the invention can be further expedient if, following the curtain coating, the same side of the web is coated a second time with a conventional coating unit, such as a direct application blade coating unit, dried and then the other side of the web is also coated with a conventional coating unit and then dried with dryers becomes.
  • a conventional coating unit such as a direct application blade coating unit
  • the quality of the fiber web produced is when it is smoothed before it is rolled up, i.e. within a final group of the production machine.
  • This smoothing unit has a heating roller which is provided with a plastic jacket which has a metallic coating with a thickness of ⁇ 200 ⁇ m. This achieves an enormous increase in smoothness and an even better gloss.
  • the fibrous web can then be fed to a cooling group and then to the reel.
  • the cardboard or the paper has three layers consisting of a fiber top layer made of bleached cellulose, a middle layer made of wood-containing raw material and / or waste paper and a back layer made of bleached cellulose or a mixture of bleached cellulose Pulp with proportions of wood-containing raw material, to which proportions of waste paper stock are also added.
  • the ceiling is made of 100% bleached cellulose and is coated at least once.
  • the insert i.e. the middle days, is light and consists either of 100% wood-containing raw material or parts of recycled paper are added.
  • the back is light-colored and consists either of 100% bleached cellulose or a mixture of bleached cellulose with proportions of wood-containing raw material. Waste paper stock can also be added to the back.
  • the back can optionally be painted with at least one line. If waste paper is used, it can optionally be deinked in the stock preparation.
  • the coating paste is enriched with plastics.
  • the top layer can consist of 100% bleached cellulose or 100% recycled paper, depending on the quality of the cardboard. But it is also possible to produce the top layer from a mixture of bleached cellulose and waste paper. However, the top layer can also contain only a slight amount of wood, and the wood pulp can also be bleached or can also be wood-free. The ceiling should always be painted.
  • the insert mostly consists of mixed waste paper or optionally with proportions of mechanical wood pulp. Any mixing ratio is possible.
  • the back is made of recycled paper and may contain bleached and / or unbleached cellulose.
  • the reverse side can be either coated or uncoated.
  • qualities with the following abbreviation, with the number 1 indicating the variety with the highest quality.
  • the total proportion of mixed waste paper stock can be found in the following table
  • This three-layer fiber web or packaging paper or cardboard web described above always has a "white” fiber cover layer, which is then provided with the white coating layer.
  • packaging paper and cardboard of particularly high quality and printing properties can be produced for the first time.
  • the advantages of the process also consist in energy and raw material savings.
  • the process itself is characterized by an improvement in runnability (running properties).
  • FIG. 1 shows a process scheme for the production of a three-layer, coated paper or cardboard web.
  • the material flow S originating from a stock preparation system is fed to a wire section I from a headbox 1 with a dilution water control.
  • the wire section consists of three Fourdrinier wires 2, 5 and 6 to form a three-layer web B.
  • the Fourdrinier wire 2 is used to form a middle layer, the Fourdrinier wire 5 of the top layer and the Fourdrinier wire 6 forms the back.
  • the fourdrinier wire 2 of the middle layer is equipped with a former 3 (traded by the applicant's company under the name DuoFormer D) and with a sieve shaking device 4 (traded by the applicant's company under the name Duo Shake).
  • press section II From wire section I, web B is transferred into press section II via various removal elements presses 7.
  • Press section II with presses 7 consists of a double-felted suction press roll 7.1 in the first nip and a double-felted Nipco Flex press in the second nip and an offset press in the third nip.
  • web B After press section II, web B has a dry content of up to 57%.
  • This press concept can be designed with a closed or open web guide.
  • the frame can also be designed as a cantilever. It is possible to add sewn or seamless felts in the press section II
  • drying cylinder groups 8a within a pre-drying section III, which here have two-row drying cylinder arrangements.
  • a drying unit 9 with condensation press drying is installed.
  • the paper web is dried much more intensively and the smoothness of the web side in contact with the cylinder is significantly increased.
  • Such a drying arrangement is for example from EP 1586 698 A1 and the EP 0988 417 B1 known. This technology used here is particularly energy-efficient, since, in addition to the high specific evaporation of more than 40 kg / m 2 h, there is also a significant increase in the smoothness of the packaging paper or cardboard inside the dryer section hood.
  • the preferred installation position of this condensation press dryer is in a range above 50% to approx. 90% dry content, but primarily above 55% dry content.
  • the integration of one or more such drying units is preferably carried out in the pre-dryer section III, but it is also conceivable to provide such units in a subsequent after-dryer section.
  • the condensation press dryer 9 offers the advantage of increased evaporation rates and paper flattening.
  • drying units 9 can be installed in a "line", i.e. at the level of the conventional drying section as well as in the machine cellar.
  • the advantage of the installation in the machine basement is that the drying unit (s) 9 can be removed from the line and the drying process can only be carried out with a conventional drying section. It is also possible with existing machines that are drying limited to achieve an increase in production by installing one or more drying units 9 by replacing conventional drying cylinders.
  • starch is applied.
  • This is done with a film press 10.
  • the starch is applied simultaneously to both sides of the web in an indirect manner. This means that the starch is applied to the circumference of an application roller and in between the two Rolling existing nip delivered to the surface of the two web sides.
  • the advantage of this application of starch is that an inferior raw material can be used for the middle ply and still achieve a high level of strength for the paper or cardboard. It is also conceivable to use a so-called size press instead of the said film press, which as in FIG EP 1198643 A1 described, is equipped.
  • an after-dryer section IV with a conventional drying cylinder group 11, which in the example is designed in two rows.
  • a cooling group 12 which consists of two cooling cylinders, the upper cylinder being felted.
  • the fibrous web B is lowered to below 70 ° C. with the aid of these cooling cylinders.
  • a belt calender is used as the smoothing unit 13.
  • This belt calender has a single or multi-layer belt or belt with a coating on the facing side of the fibrous web.
  • the tape consists mainly, i.e. more than 70%, of plastic.
  • the temperature of the calender is more than 80 ° C on the belt surface when the belt is in contact with the fibrous web. A very volume-saving and excellent smoothness is achieved hereby.
  • calendering errors e.g. mottling
  • optimal results can be achieved with this technology without risk.
  • calender 13 for subsequent smoothing of the coated web B.
  • the preferred installation position of a calender for pre-smoothing is in a range of more than 55% to approx. 90% dry content, but primarily more than 60% dry content of the web.
  • a white line is first applied to the white top layer of the fibrous web B.
  • a non-contact coating unit 14 in the form of a curtain coater 14.1 (curtain coater), which has a slot nozzle or sliding layer nozzle (slide die).
  • curtain coat a particularly large amount of coating color containing white pigments is applied very evenly, even at increased speeds, and particularly good coverage and thus surface quality is achieved.
  • Another possible execution of a curtain commissioned work is based on EP A1-1 255 615 and is referred to in specialist circles as "slide die", ie sliding layer nozzle.
  • One application unit can apply coat quantities of up to 60g / m 2 , which otherwise could only be achieved with several conventional coating units.
  • Single-layer as well as multi-layer curtain applicators come into consideration, which reduces the space requirement in the machine.
  • the Figure 1 a single-layer application unit is provided.
  • the top layer is coated a second time with a conventional coating unit 15.
  • a conventional coating unit 16 for example, a free jet nozzle unit, which is followed by a doctor element, or an application unit with a short dwell time (SDTA) or otherwise known doctor blade coater.
  • SDTA short dwell time
  • Contactless dryers not specifically designated here, ie air dryers and infrared dryers, are attached to each of the coating units.
  • a subsequent correction group 17 the upper side and the lower side of the web B - that is, the top layer and back - are heated to different degrees, as a result of which the tendency of the web to roll (curl) is reduced.
  • This correction group 17 consists of a conventional one or two-tier dryer group (in the example the drying cylinders are arranged in two rows), which are equipped with or without dryer fabrics at the top and bottom.
  • the correction group 17 is preferably equipped with 2 drying wires, one for the upper row and one for the lower row of drying cylinders.
  • the upper and lower drying cylinders within the correction group are heated in such a way that the cylinder surface temperatures differ from one another by at least 10 ° C.
  • the web is then re-calendered in a calender.
  • a soft nip calender is used for this, which creates a particularly high gloss effect on the finished paper or cardboard and reduces the micro-roughness.
  • a so-called Terra X calender sold by the applicant's company could also be used.
  • Such a calender has a heated roller with a plastic jacket which is provided with a metallic layer.
  • the thickness of the plastic jacket is approx. 5 to 50mm and the metallic layer is approx. 5 to 100 ⁇ m thick.
  • a cover layer on an elastic roller is for example in the DE 10 2008 037 999 A1 disclosed.
  • the web B is cooled to temperatures below 70 ° C. with a cooling group 19.
  • the cooling group 19 is only felted at the bottom.
  • the advantage of this is that the upper side of the web B smoothed in the soft nip calender 18 no longer comes into contact with the wire and the glossy effect is thereby retained.
  • the arrangement of the cooling group 19 in front of the reel 20 - as in Figure 1 has shown the advantage that the thermal change in length of the web on the roller is reduced, as a result of which better winding properties are achieved.
  • the stream S coming from the stock preparation is premixed in a mixer 30 (ComMix) together with the white water, if necessary with additives, e.g. retention agents.
  • the broke is preferably mixed into the middle ply's machine chest. It is also conceivable that the committee in the ComMix is led by Top Ply or Back Ply.
  • the suspension is mixed with white water in a further mixer 31, a so-called hydromix.
  • the concentration of the pulp suspension after the hydromix is higher than the concentration of the headbox with the advantage that a smaller number of assemblies can be selected for the subsequent cleaning device 32 (cleaner or EcoMizer). Small impurities, e.g. fine sand, are removed in this cleaning device 32.
  • a further dilution with white water to the desired headbox concentration and optionally a mixture with additives then takes place in the mixer 33.
  • a headbox pump 34 guides the suspension through a cleaning sieve 35 (HB Screen, MSA, MST, MSS) to destroy fiber flocks and for final cleaning.
  • HB Screen, MSA, MST, MSS cleaning sieve 35
  • stock pulsations there is a reduction in stock pulsations, whereby stock fluctuations in the headbox 36 in the machine direction are avoided.
  • the necessary amount of retention agent 37 can be added to the pulp suspension upstream of the headbox 36.
  • the water required for the dilution water control at the headbox 36a of the middle ply is taken from a white water channel and, after processing in a device 38 in a sifter, is fed to the headbox.

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Claims (13)

  1. Procédé pour produire une bande de matière fibreuse à trois couches, revêtue, en particulier une bande de papier ou de carton d'emballage, dans lequel on produit d'abord un courant de matière qui est ensuite envoyé successivement à trois caisses de tête (1, 1a), à au moins une section de toile (I) pour la formation d'une bande de matière fibreuse à trois couches (B), à une section de presse (II), à une section de séchage avec des groupes de séchage (8a, 8b) et ensuite à un bobinage,
    dans lequel
    les groupes de séchage (8a, 8b) sont situés à l'intérieur d'une section de pré-séchage (III) et on applique de l'amidon après la fin de la section de pré-séchage et il s'y raccorde une section de post-séchage (IV), dans lequel on opère un satinage préliminaire de la bande de matière fibreuse fabriquée à trois couches (B) avec une calandre de bande (13) à l'intérieur ou à la suite de la section de post-séchage (IV) et on revêt ensuite la couche de couverture de la bande de matière fibreuse (B) à l'aide d'un ensemble d'application à rideau (14.1) avec une couche d'enduction pigmentée blanche et on la sèche ensuite et dans lequel on utilise dans la section de presse (II) au moins un rouleau lisse, qui agit au moins sur la couche de couverture.
  2. Procédé selon la revendication 1,
    caractérisé en ce que l'on fabrique la bande de matière fibreuse (B) en trois couches, notamment une couche dorsale, une couche moyenne et une couche de couverture, dans lequel la couche de couverture contient des fibres blanches ou blanchies ou désencrées et/ou sans bois.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que l'on effectue un séchage à la presse à condensation (9) à la suite du séchage dans la section de séchage (III) ou entre les divers séchoirs (8a) ou à la suite de l'essorage dans la section de presse (II).
  4. Procédé selon au moins une des revendications précédentes,
    caractérisé en ce que, à la suite d'un revêtement au rideau (14.1), on revêt le même côté de la bande une deuxième fois avec un ensemble de couchage conventionnel (15), comme par exemple un ensemble de couchage à lame à application directe, on la sèche et on revêt ensuite l'autre côté de la bande également avec un ensemble de couchage conventionnel (16) et on la sèche ensuite avec des séchoirs (17).
  5. Procédé selon au moins une des revendications précédentes,
    caractérisé en ce que l'on envoie la bande revêtue à un groupe de correction (17), à une lisseuse disposée en aval (18), à un groupe de refroidissement (19) et ensuite au bobinage (20).
  6. Procédé selon la revendication 1 et 2,
    caractérisé en ce que pour la formation de la couche de couverture de la bande de matière fibreuse à trois couches (B) on amène une matière fine dans la caisse de tête (1).
  7. Procédé selon la revendication 1,
    caractérisé en ce que l'on applique ladite au moins une couche d'enduction blanche avec un ensemble d'application à rideau (14.1) en une ou en plusieurs couches, qui a la forme d'une buse fendue ou d'une buse de recouvrement glissante.
  8. Procédé selon la revendication 5,
    caractérisé en ce que la lisseuse utilisée (18) présente dans le groupe final de la machine de fabrication un rouleau chauffé avec une enveloppe en matière synthétique, qui est munie d'une couche métallique.
  9. Procédé selon la revendication 8,
    caractérisé en ce que l'épaisseur de l'enveloppe en matière synthétique vaut environ 5 à 50 mm et la couche métallique a une épaisseur comprise entre 5 et 100 µm.
  10. Procédé selon au moins une des revendications précédentes,
    caractérisé en ce que l'on effectue un séchage par impact connu en soi directement après la section de presse (II) et encore avant le premier cylindre de séchage chauffé de la section de séchage (III).
  11. Procédé selon la revendication 1,
    caractérisé en ce que lors du satinage préliminaire de la bande de matière fibreuse (B), on utilise une bande qui se compose à plus de 70 % de matière synthétique et qui présente une température de plus de 80°C à la surface de la bande se trouvant en contact avec la bande de matière fibreuse.
  12. Procédé selon au moins une des revendications précédentes,
    caractérisé en ce que l'on fabrique un carton couché, en particulier du carton couché pour boîtes pliantes ou du carton blanchi pour boîtes pliantes ou du carton pour liquides, ou du papier d'emballage couché, du papier de couverture couché avec une couche de couverture blanche (CWTTL) ou du papier de couverture kraft couché avec une couche de couverture blanche (CWKTL).
  13. Procédé selon la revendication 12,
    caractérisé en ce que le carton ou le papier présente trois couches, qui se composent d'une couche de couverture en fibres en cellulose blanchie, d'une couche moyenne en matière première à haute teneur en bois et/ou en vieux papiers, et d'une couche dorsale en cellulose blanchie ou en un mélange de cellulose blanchie avec des parts de matière première à haute teneur en bois, à laquelle des parts de vieux papiers ont également été ajoutées.
EP11721321.5A 2010-06-02 2011-05-25 Procédé pour produire une bande de matière fibreuse multicouche revêtue Active EP2576900B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010029617A DE102010029617A1 (de) 2010-06-02 2010-06-02 Verfahren zur Herstellung einer gestrichenen, mehrlagigen Faserstoffbahn
PCT/EP2011/058532 WO2011151234A1 (fr) 2010-06-02 2011-05-25 Procédé pour produire une bande de matière fibreuse multicouche revêtue

Publications (3)

Publication Number Publication Date
EP2576900A1 EP2576900A1 (fr) 2013-04-10
EP2576900B1 EP2576900B1 (fr) 2015-11-04
EP2576900B2 true EP2576900B2 (fr) 2021-02-17

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EP (1) EP2576900B2 (fr)
CN (1) CN103109018B (fr)
DE (1) DE102010029617A1 (fr)
WO (1) WO2011151234A1 (fr)

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EP3164542A1 (fr) * 2014-07-02 2017-05-10 Voith Patent GmbH Procédé de production de carton pour liquide, dispositif de production de carton pour liquide et carton pour liquide selon ce procédé
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AT519242B1 (de) * 2017-02-03 2018-05-15 Andritz Ag Maschf Verfahren zur herstellung einer mehrlagigen faserstoffbahn mit weisser decklage
CN106968124B (zh) * 2017-03-20 2018-09-28 东莞市白天鹅纸业有限公司 一种生活用纸的制备方法
CN110446811B (zh) * 2017-03-21 2021-06-04 福伊特专利有限公司 幅面处理
EP3502348B1 (fr) * 2017-12-21 2020-06-24 BillerudKorsnäs AB Fractionnement de fibres
WO2019136254A1 (fr) * 2018-01-05 2019-07-11 International Paper Company Produits papetiers ayant une résistance à la flexion et une résistance dans le sens travers accrues et leurs procédés de fabrication
EP3540118B1 (fr) * 2018-03-15 2022-11-23 Valmet Technologies Oy Machine à bande fibreuse et procédé de formation d'une bande multicouche
EP3540119B1 (fr) * 2018-03-15 2023-08-02 Valmet Technologies Oy Machine à bande fibreuse et procédé de formation d'une bande multicouche
DE102018121155A1 (de) * 2018-08-30 2020-03-05 Voith Patent Gmbh Verfahren und maschine zur herstellung einer mehrlagigen faserstoffbahn
DE102019134177A1 (de) * 2019-12-12 2021-06-17 Voith Patent Gmbh Maschine und Verfahren zur Herstellung einer Faserstoffbahn
DE102020106095A1 (de) * 2020-03-06 2021-09-09 Voith Patent Gmbh Verfahren zu Beschichtung einer Faserstoffbahn
AT524998B1 (de) * 2021-04-21 2023-02-15 Mondi Ag Bedruckbares, mehrlagiges Papier für Verpackungen und Verfahren zu dessen Herstellung
CN113584946A (zh) * 2021-06-21 2021-11-02 宁波亚洲浆纸业有限公司 铜卡纸及其制造方法
DE102022107202A1 (de) * 2022-03-28 2023-09-28 Voith Patent Gmbh Mehrlagenfaserstoffbahn
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Also Published As

Publication number Publication date
DE102010029617A1 (de) 2011-12-08
CN103109018A (zh) 2013-05-15
CN103109018B (zh) 2016-03-02
EP2576900A1 (fr) 2013-04-10
EP2576900B1 (fr) 2015-11-04
WO2011151234A1 (fr) 2011-12-08

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