EP3404140B1 - Bande de transfert ou de presse à sabot pour une machine à papier, utilisation de la bande dans une machine à papier et procédé de fabrication de la bande - Google Patents

Bande de transfert ou de presse à sabot pour une machine à papier, utilisation de la bande dans une machine à papier et procédé de fabrication de la bande Download PDF

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Publication number
EP3404140B1
EP3404140B1 EP18169648.5A EP18169648A EP3404140B1 EP 3404140 B1 EP3404140 B1 EP 3404140B1 EP 18169648 A EP18169648 A EP 18169648A EP 3404140 B1 EP3404140 B1 EP 3404140B1
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EP
European Patent Office
Prior art keywords
structured
paper
carrier
cover layer
layer
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.)
Active
Application number
EP18169648.5A
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German (de)
English (en)
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EP3404140A1 (fr
Inventor
Dirk Praschak
Marie-Lene Andrews
Marion Girod
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Heimbach GmbH and Co KG
Original Assignee
Heimbach GmbH and Co KG
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Publication of EP3404140A1 publication Critical patent/EP3404140A1/fr
Application granted granted Critical
Publication of EP3404140B1 publication Critical patent/EP3404140B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • 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
    • D21F11/006—Making patterned paper
    • 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
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • D21F3/0236—Belts or sleeves therefor manufacturing methods
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/086—Substantially impermeable for transferring fibrous webs

Definitions

  • the invention relates to a transfer or shoe press belt for a paper machine and the use of a transfer or shoe press belt in such. Moreover, the invention relates to a method for producing a transfer or shoe press belt for a paper machine.
  • a transfer belt which has a fabric-formed carrier, which ensures the structural strength of the transfer belt.
  • a fabric-formed carrier On the intended for the plant of the paper web flat side is a coating of a polymeric material, such as an acrylic or polyurethane resin, provided, in which the carrier fabric is partially embedded.
  • a fiber fleece On the other flat side can be pinned on the carrier, a fiber fleece.
  • transfer and shoe press belts are also used, by means of which the paper to be produced is generally pressed against a drying cylinder, in particular a Yankee cylinder of the machine.
  • the EP 1 870 514 A2 discloses a conveyor belt for a paper machine comprising a carrier embedded in a building material, such as a polymeric material, and having structuring on the machine side due to grooves provided thereon.
  • the EP 2 157 233 A1 discloses a shoe press belt for a paper machine, which is provided on the paper side with a cover layer into which grooves are introduced by means of a cutting tool and which is then polished with sandpaper.
  • the EP 1 085 125 A2 discloses a transfer belt which has on the paper side a high molecular weight elastic element in which microcapsules are embedded and which is ground so that cut microcapsules are obtained on the paper side and structuring results.
  • the EP 0 939 162 A2 discloses a shoe press belt having on paper side a polyurethane resin layer which is first polished to obtain a desired thickness and into which concave grooves are subsequently inserted.
  • the WO 99/31318 A1 discloses a papermaking belt having a backing and a structured cover layer with ridges and depressions on the paper side, wherein the structuring of the cover layer corresponds to a structuring of the woven fabric backing which is deposited therein.
  • the US 2006/234575 A1 discloses a belt for a papermaking machine having a backing coated with polymer resin on both sides with grooves on the paper side to provide relief and dimple patterning.
  • the coating is applied by a thermal spray process.
  • a transfer or shoe press belt suitable for use in a paper machine, with a paper side intended for supporting a paper or felt web and a side facing away from the paper side, and with a carrier, wherein the transfer or shoe press belt
  • a structured cover layer arranged on the paper side of the support which consists of a coating material comprising or consisting of at least one polymer, in particular polyurea and / or polyurethane, and at least on its side facing away from the support by a structured surface having a plurality of elevations and depressions characterized and ground on its side facing away from the carrier, wherein the structured top layer was obtained in particular by the coating material was applied by a spray or curtain application or extrusion process, or furthermore comprises a structured cover layer arranged on the machine side of the support, which consists of a coating material comprising or consisting of at least one polymer, in particular polyurea and / or polyurethane and at least on its side facing away from the support by a structured surface with a plurality of
  • a transport or shoe press belt designed in the manner according to the invention has a paper and / or machine-side structured polymer, in particular polyurea and / or polyurethane coating with a surface structure having a multiplicity of elevations and depressions has, which is ground so that at least a portion of the elevations has planar top sides, which are at least substantially in one plane, on the one hand excellent for the production of embossed paper, especially tissue paper and on the other hand provides a way to control the water balance.
  • the grinding is carried out according to the invention such that the elevations of Flattened structure on the top side, but the structure is not completely leveled, so that no consistently flat or consistently smooth surface without elevations and depressions is obtained.
  • the flat top surfaces of the bumps due to grinding provide a good and generally sufficient contact surface for pressing the paper and, together with the areas lying between the flattened bumps facing these wells, have a surface topography of the transfer belt. which results in an embossing pattern of the paper produced with a paper machine equipped with the transfer belt according to the invention.
  • a paper-side structuring can also serve to control the water balance, in particular in the event that a band designed according to the invention serves as a shoe press belt and the paper side is correspondingly brought into contact with a felt.
  • a textured covering layer present on the machine side, the water balance can also be controlled, for example a "hydroplaning" can be prevented and water and impurities can be removed well.
  • a machine-side polymer coating can provide protection in the area of the belt contact with the machine and thus ensure a long service life.
  • a structured machine side can also serve to control the lubricating film between the shoe and the machine side of the belt.
  • the strip according to the invention can have a structured cover layer only on the paper or only on the machine side or also on the paper side and the machine side. Is only one Provided a textured cover layer side, can of course be provided on the opposite side and a non-structured, so smooth cover layer of the same or from another coating material. In this case, both on the paper side a smooth and on the machine side a structured cover layer and on the paper side a structured and on the machine side a smooth cover layer can be provided. If several layers are present on one side, the top layer is to be understood as meaning, in particular, in each case the topmost layer.
  • a structured paper and / or machine-side surface of the transfer belt is preferably provided by a patterning of a structured carrier penetrating into the paper or machine-side cover layer or by a structured intermediate layer arranged between carrier and paper-side cover layer and / or between carrier and machine-side cover layer ,
  • the structured cover layer provided on one or both sides adheres to the structure of the carrier or interlayer surface and forms it quasi alienated material-building.
  • a paper-side structured cover layer is provided, and a structured intermediate layer arranged between the support and the paper-side structured cover layer is provided from a coating material comprising or consisting of at least one polymer, in particular polyurea and / or polyurethane is, which is characterized at least on its side facing away from the carrier by a structured surface having a plurality of elevations and depressions.
  • a structured surface layer on the machine side and a structured one arranged between the carrier and the machine-side structured cover layer Intermediate layer is provided from a coating material comprising or consisting of at least one polymer, in particular polyurea and / or polyurethane, which is distinguished at least on its side facing away from the carrier by a structured surface with a plurality of elevations and depressions.
  • a paper and a machine-side structured cover layer is provided, and paper and / or machine side arranged between the support and the respective structured cover layer structured intermediate layer of at least one polymer, in particular polyurea and / or polyurethane comprehensive or existing coating material is provided, which is characterized at least on its side facing away from the carrier by a structured surface having a plurality of elevations and depressions.
  • a paper-side structured cover layer prepared and prior to their preparation on the provided carrier paper side a structured intermediate layer of at least one polymer, especially polyurea and / or polyurethane comprehensive or existing coating material is made, at least on the paper side characterized by a structured surface having a plurality of elevations and depressions, or that a machine-side structured cover layer prepared and prior to their preparation on the provided carrier machine side a structured intermediate layer of a comprehensive at least one polymer, especially polyurea and / or polyurethane coating material or thereof is produced, which is characterized at least on the machine side by a structured surface having a plurality of elevations and depressions t, or that a paper- and a machine-side structured cover layer are produced and provided on the provided paper prior to the production of the paper-side structured cover layer Carrier paper-side, a structured intermediate layer of a at least one polymer, in particular polyurea and / or polyurethane comprising or consisting thereof coating material is produced,
  • a structured intermediate layer may be provided below or even below one.
  • the paper-side and / or the machine-side structured intermediate layer has been obtained, in particular, by applying the coating material to the carrier by a spray or pressure or curtain application or extrusion process.
  • curtain coating or curtain coating known curtain coating that is the coating material expedient manner applied in a state of suitable viscosity, in particular in the liquid state. If the coating material is sprayed on, this is done in particular flatly and / or using one or more suitable spray nozzles.
  • the paper-side and / or the machine-side structured intermediate layer has been obtained or produced by paper side and / or machine side at a predetermined distance of particular 1 to 10 mm before or immediately on the Carrier arranged a carrier partially masking, preferably lattice-shaped masking and the coating material was applied to the partially hidden by the masking carrier by a spray or curtain application or extrusion process or is.
  • the paper-side and / or the machine-side structured intermediate layer has been obtained by printing a predetermined pattern of the coating material as an intermediate layer on the carrier.
  • both approaches offer a high degree of flexibility, as far as the concrete form of the structure or patterning so that embossed paper with almost any embossing pattern can be obtained in a simple manner and / or a defined control of the water balance, for example, flexible different flow directions can be obtained.
  • both can be prepared in the same manner, for example using a mask or both by printing, or even various of mentioned manufacturing process can be used.
  • the paper and / or machine-side structured covering layer is produced in particular in such a way that the structured surface is deposited on the side of the structured intermediate layer facing away from the carrier in the structured covering layer.
  • the band is characterized in that the structured surface on the side of the paper-side and / or the machine-side structured cover layer facing away from the carrier is structured by the structured surface of the structured surface of the side facing away from the carrier Cover layer lying structured intermediate layer is given.
  • a coating material which is characterized by a suitable viscosity, with uniform coating thickness in particular contactless - so for example by spray, curtain coating or extrusion process and not by a doctor blade or roller application - on the paper and / or machine side applied with the intermediate layer so that it follows the structure of the intermediate layer, escapes in particular the coating matrix, so to speak into the recesses of the intermediate layer.
  • polyureas are particularly suitable for obtaining, with uniform application, a cover layer whose structure resembles or resembles that of an underlying intermediate layer or else an underlying support.
  • a further embodiment of the method according to the invention is characterized in that a carrier is provided which has a structured surface with a multiplicity of elevations and depressions on the paper and / or machine side, and in particular the paper side and / or the machine side structured cover layer directly on the carrier and the paper-side and / or the machine-side structured cover layer is produced in such a way that the structure of the paper- or machine-side surface of the support is reflected in the paper- or machine-side surface of the structured cover layer.
  • a further embodiment of the tape according to the invention is characterized accordingly by the fact that the carrier paper and / or machine side a structured surface having a plurality of elevations and depressions, and in particular the paper side and / or the machine side structured cover layer is arranged directly on the carrier and the structured surface on the side facing away from the carrier side of the paper side and / or the machine side structured cover layer the paper or machine-side structured surface of the carrier which deposits in the structured covering layer is given. If no structured intermediate layer is provided on the paper and / or machine side, the paper and / or machine-side structured cover layer is produced directly on the support, in particular by applying coating material to the corresponding side of the support by means of a spray application or extrusion Method is applied to these.
  • a carrier with a structured surface may for example be in the form of a fabric, in particular a fabric with at least some coarser and preferably more prominent tissue threads.
  • tissue carrier with pronounced structure in the DE 20 2013 104 888 U1 , the contents of which are hereby incorporated by reference, disclosed various embodiments of a fabric for a paper machine.
  • a spiral link belt or a knitted fabric or a thread lay can be provided as a carrier.
  • coating material applied on the paper and / or machine side can enter or pass through the carrier completely.
  • a structured intermediate layer can also be dispensed with and the tape according to the invention then in particular have only a paper-side coating and / or only a machine-side coating or in particular, only one can be produced in the context of the method according to the invention on one or both sides.
  • a structured intermediate layer ie more than one layer of a coating material comprising or consisting of at least one polymer, in particular polyurea and / or polyurethane, can also be provided on paper and / or machine side on a support which is not at least substantially smooth or be.
  • further layers for example one or more smooth cover and / or intermediate layers of the same or of other materials may be provided both on paper and on the machine side.
  • the paper-side and / or the machine-side structured cover layer is formed as a closed layer extending over the entire paper side or machine side of the tape and / or the paper-side and / or the machine-side structured intermediate layer is not a closed layer is formed but has interruptions.
  • the method according to the invention can accordingly be distinguished by the fact that a closed paper-side and / or machine-side structured cover layer extending over the entire paper side of the transfer belt is produced and / or a paper-side and / or machine-side structured intermediate layer which is not closed but has interruptions is produced.
  • a paper-side and / or machine-side structured cover layer is closed in particular when a paper-side and / or machine-side structured intermediate layer has been intermittently produced, for example using masking and / or by printing the coating material according to a predetermined pattern, and an impermeable one Band should be obtained.
  • the paper-side and / or machine-side structured intermediate layer then serves, in particular, the paper or machine-side structuring and the structured cover layer, which in particular lies directly above it, to close the tape while maintaining the structure.
  • the paper-side and / or machine-side structured cover layer and / or the paper-side and / or machine-side structured intermediate layer is impermeable to water in a further preferred embodiment, in the context of the method may be provided accordingly that a water-impermeable paper-side and / or machine-side textured cover layer and / or a waterproof paper-side and / or machine-side structured intermediate layer is produced.
  • the coating material for the paper-side and / or machine-side structured covering layer and / or possibly existing paper-side and / or machine-side structured intermediate layer and / or further layers which may be present on the paper and / or machine side have proven to be particularly suitable produced from a reactive system for producing an elastomer coating, preferably a multicomponent system having two or more components, which in particular has a pot life of less than 30 Seconds, preferably less than 15 seconds, more preferably less than 10 seconds.
  • Reactive systems cure by cross-linking the reactive groups in the components.
  • Under the pot life is to be understood that time within which the mixed starting materials are still flowable.
  • the pot life according to DIN 16 945 is meant.
  • Polyurea polymers for example, are generally produced via a two-component system, one component, in particular an isocyanate, reacting with a polyfunctional amine or amine mixture as a further component to form polyurea.
  • the coating material of the paper and / or machine-side structured cover layer is one which is characterized by a viscosity of less than 3000 mPas, preferably less than 1000 mPas, in a range of 20 ° C. to 120 ° C., especially 60 to 90 ° C lying processing temperature.
  • the coating material of the paper and / or machine-side structured intermediate layer and / or other layers present on the paper and / or machine side may in particular be one which is preferred by a viscosity of less than 3000 mPa s less than 1000 mPa s at a lying in the range of 20 ° C to 120 ° C, in particular 60 to 90 ° C processing temperature.
  • a viscosity of the coating material in this area has proven to be particularly suitable, in particular for a spray or Curtain application. As far as the determination of viscosity is concerned, particular reference should be made to ISO 3219: 1993.
  • Polyurea is preferably processed at a temperature of 60 to 90 ° C and is characterized in this temperature range by a viscosity of less than 1000 mPa s.
  • the coating material of the paper-side and / or machine-side structured cover layer and / or the paper-side and / or machine-side structured intermediate layer and / or any further layers present comprises in particular polyurea and / or polyurethane and / or epoxy resin or consists thereof.
  • the layer thickness of the paper-side and / or machine-side structured cover layer and / or the paper-side and / or machine-side structured intermediate layer and / or any further layers present is in particular adjusted such that it lies in the range from 1 to 5 mm.
  • a structured covering layer in particular the said materials, the said layer thickness and the water-impermeable nature, can of course also be used for the smooth covering layer in the case where a structured covering layer is provided on one side and a smooth covering layer on the other side. each alone or in combination - apply.
  • Another object of the invention is the use of a belt according to the invention as a press belt, in particular transfer or shoe press belt in a paper machine, in particular a tissue paper machine, preferably in such a way that guided through the paper machine paper or felt web in contact with the paper side of Bandes comes, and / or in particular in the production of embossed paper, preferably embossed tissue paper.
  • the transfer or shoe press belt according to the invention is also particularly well suited for use in a paper machine for the production of tissue paper, wherein the use preferably takes place in such a way that pressed the paper to be produced by means of the tape according to the invention against a drying cylinder, in particular a Yankee cylinder of the paper machine becomes.
  • FIG. 1 shows a purely schematic sectional view of a section of a transfer or shoe press belt according to the invention, which is suitable for use in a paper machine for the production of embossed paper, in particular embossed tissue paper.
  • the transfer or shoe press belt has a specific for the edition of a paper web paper side 1, in the FIG. 1 facing upward, and a side facing away from the paper side 1 machine side 2 and comprises a present given by a spiral link belt carrier 3.
  • the smooth machine side 2 of the carrier 3 forms the machine side 2 of the band.
  • a cover layer 4 of polyurea is provided, which is paper-characterized by a structured surface with a plurality of elevations 5 and depressions 6 and ground paper, so that all of the elevations 5 are characterized by a comparatively flat top.
  • an intermediate layer 7 is further provided, which also consists of polyurea and paper side characterized by a structured surface with a plurality of elevations 5 and depressions 6.
  • the intermediate layer 7 is particularly in the FIG. 4 recognizable, where the carrier 3 is shown with paper side disposed thereon intermediate layer 7, but still without top layer 4.
  • the spiral link belt is provided as a carrier 3 in a first step and on this paper side a grid-shaped masking 8 is placed directly so that it is in contact with the carrier 3.
  • the carrier 3 with paper side disposed thereon masking 8 is in the FIG. 2 shown.
  • the intermediate layer 7 is prepared by a polyurea is sprayed onto the carrier 3 arranged thereon with masking 8 in the liquid state.
  • a polyurea is sprayed onto the carrier 3 arranged thereon with masking 8 in the liquid state.
  • a two-component system for producing an elastomeric coating for Commitment Specifically, an isocyanate-containing prepolymer is mixed with polyamine to react to form polyurea. The mixture takes place immediately before spraying onto the carrier 3, so that the coating material can still be applied to the carrier 3 within the pot life, ie before completion of the reaction and thus curing of the coating material.
  • the coating material is sprayed by means of one or more nozzles not shown in the figures.
  • the mixture of the two components for the preparation of the polyurea takes place in the nozzle or the nozzles.
  • the pot life of the coating material used in the present case is about ten seconds.
  • the processing temperature is in the present case at about 70 ° C. At this temperature, the material used has a viscosity of less than 1000 mPa s.
  • the carrier 3 with masking 8 arranged thereon is guided past the nozzle for coating with polyurea for producing the intermediate layer 7. Alternatively, the nozzle used can be moved by hand or by machine.
  • the spraying of coating material takes place such that an intermediate layer 7 of constant thickness with a thickness of about 2 mm is obtained.
  • the state after spraying the coating material is in FIG. 3 shown.
  • this can also be arranged at a predetermined distance of a few, for example 5 mm to the paper side of the carrier 3 and, if the carrier 3 is moved during the application of the coating material, in particular can "run along” with this, preferably at the same speed. Due to a distance between the masking 8 and the carrier 3, in particular in connection with an application of coating material by spraying, a rather “blurred Masking "and thus a coating pattern with quasi” flowing transitions "instead of clear boundary contours are obtained.
  • a curtain application process can be used, so the two mixed components can be poured in the liquid state within the pot life curtain-like on the support 3 with arranged on it 8 masking. If curtain application is used, the carrier 3 is moved, in particular in a manner known per se, under the "curtain" formed from the coating material, in particular in a direction orthogonal to the plane formed by the curtain.
  • a structured intermediate layer 7 can furthermore furthermore be obtained alternatively by directly printing coating material on the paper side of the carrier in a defined application pattern, for example by means of material-constructing printing processes.
  • the masking 8 is removed, wherein the removal in the illustrated embodiment takes place after the curing of the coating material.
  • the cover layer 4 is applied to the carrier 3 with intermediate layer 7 produced thereon, wherein the same coating material is used and the application takes place again by spraying and also under the operating parameters mentioned above for the preparation of the intermediate layer 7, and wherein the only difference to the previous procedure is that this time no masking 8 is used.
  • cover layer 4 does not have to be obtained by spraying coating material, but can also be obtained, for example, by curtain application or else extrusion.
  • FIG. 5 The resulting state is in the FIG. 5 shown.
  • the FIG. 5 - just like that FIG. 1 no dividing line between the cover layer 4 and the intermediate layer 7.
  • the cross section of the cover layer 4 is based on the comparison of FIGS FIGS. 1 and 4 out.
  • the structure of the intermediate layer 7 is reflected in the cover layer 4 applied thereto.
  • the cover layer 4 produced without the use of a mask 8 is formed as a closed layer.
  • the cover layer 4 of in FIG. 1 illustrated embodiment of a tape according to the invention is thus impermeable to water.
  • the cover layer 4 is ground on the paper side, so that elevations 5 are obtained with a flat top, which provide a particularly suitable contact surface for the pressing operation of the paper to be produced.
  • machine side of the belt is formed by the machine side 2 of the carrier 3
  • machine side 2 of the carrier 3 On the machine side 2 of the carrier 3, it is also possible to provide a machine-side, in particular structured, cover layer 4 and optionally a machine-side, in particular, structured intermediate layer 7 lying underneath it.
  • a machine-side cover layer and machine-side interlayer can be made in complete analogy to a paper-side cover and interlayer, as described in detail above. If one or more machine-side layers are provided, they may consist of the same or a different material as the intermediate layer 7 and / or cover layer 4. Of course, it is also possible that only on the machine side 2 of the carrier 3, a cover layer 4 and possibly an intermediate layer 7 are provided.
  • FIGS. 6 and 7 is - also in a purely schematic sectional view of a portion - a second embodiment of a transfer or shoe press belt according to the invention shown.
  • This also comprises a support 3, which, however, is given by a fabric.
  • Both the paper and the machine side are characterized by a pronounced fabric structure, which in the FIGS. 6 and 7 is indicated schematically.
  • the tape shown here has no intermediate layer 7 but only a covering layer 4 of polyurea, which is ground on the paper side.
  • FIG. 6 shows the second embodiment of the transfer or shoe press belt in the finished state
  • the can FIG. 7 the unpolished state can be taken.
  • the tape according to the second embodiment is produced by providing a fabric carrier 3 and on which the cover layer 4 is produced by using the same material as described above in connection with FIG described first embodiment for intermediate and top layer 4, is sprayed onto the paper side of the fabric carrier 3 without a masking 8 is thereby used.
  • the structured paper-side surface of the cover layer 4 is obtained in the second embodiment, characterized in that the fabric structure of the carrier 3 in the cover layer 4 - as in the FIGS. 6 and 7 recognizable - precipitate.
  • the cover layer 4 adheres to the structure of the carrier surface and forms this quasi "alienated" material-building from.
  • the layer thickness of the cover layer 4 is also about 2 mm and this is formed as a continuous layer without interruptions, so that the cover layer 4 of the second embodiment is waterproof.
  • a smooth cover layer is provided on the machine side 2, or that the structured cover layer 4 is not provided on the paper-1 but the machine side 2 and on the paper side 1 is a smooth topcoat.
  • the smooth cover layer can then consist of the same coating material as the structured and the same layer thickness and hardness, which is not to be understood as limiting, so also cover layers can be provided on opposite sides, not only by their surface texture but also other features differ.
  • a transfer or shoe press belt according to the invention are used in particular in the press section of a paper machine in the region of the transition to the dryer section, where they are due to their structured paper-side surface of the production of embossed paper, in particular embossed tissue paper.
  • the use can also be made such that the paper to be produced is pressed by means of the tape according to the invention against a drying cylinder, in particular a Yankee cylinder of the paper machine.
  • the strip according to the invention can be produced in a simple manner by carrying out the method according to the invention, whereby both using a masking 8 and during the production of the intermediate layer 7 by printing a very great flexibility, as regards the available structures of the transfer ribbon and thus produced embossed paper ,

Claims (17)

  1. Bande de presse de transfert ou de presse à sabot, utilisable dans une machine à papier, avec un côté papier (1) destiné à supporter une bande de papier ou de feutre et un côté machine (2) opposé au côté papier (1), et avec un support (3), la bande de presse de transfert ou à sabot
    comprenant en outre une couche de couverture structurée (4) disposée sur le côté papier du support (3), qui consiste en un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier du polyurée et/ou du polyuréthane, et qui est au moins sur son côté opposé au support (3), caractérisée par une surface structurée ayant plusieurs élévations (5) et dépressions (6), et est poncée sur sa face opposée au support (3),
    ou comprenant en outre une couche de couverture structurée (4) disposée sur le côté machine du support (3), qui consiste en un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier du polyurée et/ou du polyuréthane, et qui est au moins sur son côté opposé au support (3), caractérisée par une surface structurée ayant plusieurs élévations (5) et dépressions (6), et est poncée sur son côté opposé au support (3),
    ou comprenant en outre une couche de couverture structurée (4) disposée sur le côté machine et sur le côté papier du support (3), qui consiste en un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier du polyurée et/ou du polyuréthane, et qui sont au moins sur leur côté opposé au support (3) caractérisée par une surface structurée ayant plusieurs élévations (5) et dépressions (6), et sont poncées sur leur face opposée au support (3), le matériau de revêtement de la couche de couverture structurée côté papier et/ou côté machine (4) ayant été fabriqué à partir d'un système réactif à plusieurs composants avec deux ou plusieurs composants pour produire un revêtement élastomère, et le matériau de revêtement de la couche de couverture structurée côté papier et/ou côté machine (4) est caractérisé par une viscosité inférieure à 3000 mPa s à une température de traitement comprise entre 20°C et 120°C, en particulier entre 60°C et 90°C.
  2. Bande selon la revendication 1, caractérisée en ce que
    une couche de couverture structurée côté papier (4) est prévue, et une couche intermédiaire structurée (7) en un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier de polyurée et/ou de polyuréthane, disposé entre le support (3) et la couche de couverture structurée côté papier (4) est prévue, caractérisée au moins sur sa face opposée au support (3) par une surface structurée ayant plusieurs élévations (5) et dépressions (6),
    ou une couche de couverture structurée côté machine (4) est prévue, et une couche intermédiaire structurée (7) en un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier de polyurée et/ou de polyuréthane, disposé entre le support (3) et la couche de couverture structurée côté machine (4) est prévue, caractérisée au moins sur sa face opposée au support (3) par une surface structurée ayant plusieurs élévations (5) et dépressions (6),
    ou des couches de couverture structurée côté machine et côté papier (4) sont prévues, et sur le côté papier et/ou côté machine, une couche intermédiaire structurée (7) en un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier de polyurée et/ou de polyuréthane, qui est disposé entre le support (3) et la couche de couverture structurée (4)respective, qui présente, au moins sur sa face opposée au support (3), une surface structurée avec plusieurs élévations (5) et dépressions (6).
  3. Bande selon la revendication 2, caractérisée en ce que la surface structurée de la couche de couverture structurée côté machine et/ou côté papier (4), qui est opposée au support (3), est donnée par une surface structurée du côté opposé au support (3) d'une couche structurée intermédiaire (7) disposée sous la couche de couverture (4) qui traverse la couche de couverture structurée respective (4).
  4. Bande selon l'une des revendications précédentes, caractérisée en ce que le support (3) est une bande à maillons spiralés ou un tissu tissé ou un tissu tricoté ou une grille et/ou en ce que le support (3) présente une surface structurée sur le côté papier et/ou le côté machine avec une pluralité de élévations (5) et de dépressions (6), et en particulier la couche de couverture structurée côté machine et/ou côté papier (4) est disposée directement sur le support (3), et la surface structurée de la couche de couverture structurée côté machine et/ou côté papier (4) opposée au support (3) est donnée par la surface structurée côté papier ou côté machine du support (3) pénétrant dans la couche de couverture structurée (4).
  5. Bande selon l'une des revendications précédentes, caractérisée en ce que la couche de couverture structurée côté papier et/ou côté machine (4) est réalisée sous la forme d'une couche fermée s'étendant sur tout le côté papier (1) ou côté machine (2) de la bande, et/ou la couche de couverture structurée côté papier et/ou côté machine (4) est imperméable à l'eau, et/ou la couche de couverture côté papier et/ou côté machine est caractérisé par une dureté comprise entre 40 Shore D et 80 Shore D et/ou l'épaisseur de la couche de coverture côté papier et/ou côté machine (4) est comprise entre 1 et 5 mm.
  6. Bande selon l'une quelconque des revendications 2 à 4, caractérisée en ce que la couche structurée intermédiaire côté papier et/ou côté machine (7) est imperméable à l'eau, et/ou en ce que la couche structurée intermédiaire côté papier et/ou côté machine (7) est caractérisée par une dureté comprise entre 40 Shore D et 80 Shore D, et/ou la couche structurée intermédiaire côté papier et/ou côté machine (7) ne se présentent sous forme de couche fermée mais présentent des interruptions et/ou l'épaisseur la couche structurée intermédiaire côté papier et/ou côté machine (7) est comprise dans l'intervalle de 1 à 5 mm.
  7. Bande selon l'une des revendications précédentes, caractérisée en ce que le matériau de revêtement de la couche de couverture structurée côté papier et/ou côté machine (4) a été fabriqué à partir d'un système multicomposant, qui est caractérisé par une durée de vie en pot inférieure à 30 secondes, de préférence inférieure à 15 secondes, plus préférablement inférieure à 10 secondes, et/ou en ce que le matériau de revêtement de la couche de couverture structurée côté papier et/ou côté machine (4) est caractérisé par une viscosité inférieure à 1000 MPa s à une température de traitement comprise entre 20 et 120°C, en particulier entre 60 et 90°C.
  8. Bande selon l'une quelconque des revendications 2 à 7, caractérisée en ce que le matériau de revêtement de la couche structurée intermédiaire côté papier et/ou côté machine (7) a été fabriqué à partir d'un système réactif pour produire un revêtement élastomère, qui est caractérisé par une durée de vie en pot inférieure à 30 secondes, de préférence inférieure à 15 secondes, de préférence moins de 10 secondes et/ou en ce que le matériau de revêtement de la couche structurée intermédiaire côté papier et/ou côté machine (7) est caractérisé par une viscosité inférieure à 3000 mPa s, de préférence inférieure à 1000 mPa s à une température de traitement comprise entre 20°C et 120°C, en particulier entre 60°C et 90°C.
  9. Utilisation d'une bande selon l'une quelconque des revendications 1 à 8 comme bande de presse, en particulier bande de transfert ou bande de presse à sabot dans une machine à papier, en particulier une machine à papier tissu, de préférence de telle sorte qu'une bande de papier ou de feutre guidée à travers la machine entre en contact avec le côté papier de la bande, et/ou en particulier pour la production de papier estampé, de préférence du papier tissu estampé.
  10. Procédé de fabrication d'une bande de presse à transfert ou à sabot, adaptée à l'utilisation dans une machine à papier et comportant un côté papier (1) destiné à supporter une bande de papier ou de feutre et un côté machine (2) opposé au côté papier (1), en particulier selon une des revendications 1 à 8, dans laquelle
    un support (3) est prévu,
    et dans laquelle, en outre, une couche de couverture structurée (4) constituée d'un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier de polyurée et/ou de polyuréthane, est produite sur le côté papier du support (3), qui est, au moins sur son côté opposé au support (3), caractérisée par une surface structurée présentant plusieurs élévations (5) et dépressions (6), la couche de couverture structurée (4) en particulier étant produite en appliquant un matériau de revêtement par un procédé d'application par pulvérisation, par rideau ou par extrusion, et en ponçant la couche de couverture structurée (4) de sorte que la hauteur des élévations (5) soit réduite mais qu'aucune surface lisse ne soit obtenue,
    ou dans laquelle, en outre, une couche de couverture structurée (4) constituée d'un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier de polyurée et/ou de polyuréthane, est produite sur le côté machine du support (3), qui est, au moins sur son côté opposé au support (3), caractérisé par une surface structurée présentant plusieurs élévations (5) et dépressions (6), la couche de couverture structurée (4) en particulier étant produite en appliquant un matériau de revêtement par un procédé d'application par pulvérisation, par rideau ou par extrusion, et en ponçant la couche de couverture structurée (4) de sorte que la hauteur des élévations (5) soit réduite mais qu'aucune surface lisse ne soit obtenue,
    ou dans laquelle, en outre, sur le côté papier et sur le côté machine du support (3), une couche de couverture structurée (4) constituée d'un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier de polyurée et/ou de polyuréthane, est produite, qui sont, au moins sur leur face opposée au support (3), caractérisé par une surface structurée présentant plusieurs élévations (5) et dépressions (6), la couche de couverture (4) structurée côté papier et côté machine en particulier étant produite en appliquant un matériau de revêtement par un procédé d'application par pulvérisation ou par rideau ou par extrusion, et en ponçant la couche de couverture (4) structurée côté papier et côté machine de telle sorte que la hauteur des élévations (5) soit réduite mais qu'aucune surface lisse ne soit obtenue,
    un système réactif à plusieurs composants ayant deux composants ou plus étant utilisé pour produire un revêtement élastomère pour obtenir le matériau de revêtement pour la couche de couverture structurée côté papier et/ou côté machine (4), et un matériau de revêtement étant utilisé pour la couche de couverture structurée côté papier et/ou côté machine (4), lequel matériau de revêtement étant caractérisé par une viscosité inférieure à 3000 mPa s à une température de traitement comprise entre 20°C et 120°C, en particulier entre 60°C et 90°C.
  11. Procédé selon la revendication 10, caractérisé en ce que
    une couche de couverture structurée côté papier (4) est fabriquée et, avant sa fabrication, sur le côté papier du support (3), prévu, une couche intermédiaire structurée (7) en un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier de polyurée et/ou de polyuréthane, qui est caractérisé au moins au côté papier par une surface structurée présentant plusieurs élévations (5) et dépressions (6), est fabriquée,
    ou en ce qu'une couche de couverture structurée côté machine (4) est fabriquée et, avant sa production sur le côté machine du support (3) prévu, une couche intermédiaire structurée (7) en un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier de polyurée et/ou de polyuréthane, qui est caractérisé au moins au côté machine par une surface structurée présentant plusieurs élévation (5) et dépression (6), est fabriquée,
    ou en ce que des couches de couverture structurées côté papier et côté machine (4) sont produits et, avant la production de la couche de couverture structurée côté papier sur le côté papier du support (3) prévu, une couche intermédiaire structurée (7) en un matériau de revêtement comprenant ou consistant en au moins un polymère, en particulier de polyurée et/ou de polyuréthane, qui est caractérisé au moins sur sa face opposée au support (3) par une surface structurée présentant plusieurs élévations (5) et dépressions (6), et/ou une couche intermédiaire structurée (7) en un matériau de revêtement constitué d'au moins un polymère, en particulier de polyurée et/ou de polyuréthane, qui, au moins sur sa face opposée au support (3), est caractérisée par une surface structurée présentant plusieurs élévations (5) et dépressions (6), est fabriquée avant la fabrication de la couche de couverture structurée (4) du côté machine du support (3) prévu,
    la couche intermédiaire structurée côté papier et/ou côté machine (7) en particulier étant produite en appliquant le matériau de revêtement sur le support (3) par un procédé de pulvérisation, par impression ou par rideau ou d'extrusion, et la couche intermédiaire structurée côté papier et/ou côté machine (7) en particulier étant produite en disposant sur le côté papier et/ou le côté machine à une distance prédéterminée de préférence de 1 à 10 mm devant ou immédiatement sur le support (3) un masque (8) de préférence en forme de treillis recouvrant partiellement le support (3) et en appliquant le matériau de revêtement au support (3) étant partiellement couvert par le masque (8) par un procédé de pulvérisation ou d'extrusion, le support et le masque étant disposés à la distance prédéterminée devant ou directement sur le support étant en particulier déplacés pendant la pulvérisation, l'application en rideau ou l'extrusion, la vitesse de déplacement du support et du masque étant au moins sensiblement la même, et/ou la couche intermédiaire structurée côté papier et/ou côté machine (7) étant produite en imprimant un motif prédéterminé du matériau de revêtement sur le support (3) comme couche intermédiaire (7).
  12. Procédé selon la revendication 10 ou 11, caractérisé en ce que la couche de couverture structurée côté papier et/ou côté machine (4) est réalisée de telle sorte que la surface structurée du côté de la couche intermédiaire structurée (7) opposé au support (3) pénètre dans la couche de couverture structurée (4).
  13. Procédé selon l'une des revendications 10 à 12, caractérisé en ce que est prévu comme supportun tissu tissé ou une courroie à mailles en spirale ou un tissu tricoté ou une grille et/ou un support (3) est prévu qui présente une surface structurée avec plusieurs élévations (5) et dépression (6), sur le côté papier et/ou machine et en particulier la couche de couverture structurée côté papier et/ou côté machine (4) est fabriqué directement sur le support (3) et le côté papier et/ou la couche de couverture structurée côté papier et/ou côté machine (4) est fabriqué de telle sorte que la structure de la surface du côté papier ou côté machine du support (3) pénètre dans la surface côté papier ou côté machine de la couche de couverture structurée (4).
  14. Procédé selon l'une des revendications 10 à 13, caractérisé en ce que la couche de couverture structurée côté papier et/ou côté machine (4) est réalisée sous la forme d'une couche fermée (4) s'étendant sur la totalité du côté papier (1) ou côté machine (2) de la bande, et/ou la couche de couverture structurée côté papier et/ou côté machine est réalisée sous la forme d'une couche (4) imperméable à l'eau et/ou la couche de couverture structurée côté machine (4) est réalisée sous la forme d'une couche (4) ayant une dureté comprise entre 40 Shore D et 80 Shore D, et/ou la couche de couverture (4) structurée côté papier et/ou côté machine est réalisée sous la forme d'une couche (4) ayant une épaisseur comprise entre 1 et 5 mm.
  15. Procédé selon l'une des revendications 11 à 14, caractérisé en ce que la couche structurée intermédiaire (7) côté papier et/ou côté machine est réalisée sous la forme d'une couche non fermée (7) présentant des interruptions, et/ou la couche structurée intermédiaire (7) côté papier et/ou côté machine est réalisée sous la forme d'une couche (7) imprimable à l'eau, et/ou la couche structurée intermédiaire (7) côté papier et/ou côté machine est réalisée sous la forme d'une couche (7) ayant une dureté comprise entre 40 Shore D et 80 Shore D et/ou la couche structurée intermédiaire (7) côté papier et/ou côté machine est réalisée sous forme d'une couche (7) ayant une épaisseur comprise entre 1 et 5 mm.
  16. Procédé selon l'une des revendications 10 à 15, caractérisé en ce qu'un système à plusieurs composants est utilisé pour produire le matériau de revêtement pour la couche de couverture structurée côté papier et/ou côté machine (4), qui est caractérisé par une durée de vie en pot inférieure à 30 secondes, de préférence inférieure à 15 secondes, de préférence inférieure à 10 secondes et/ou en ce que pour la couche de couverture structurée côté papier et/ou côté machine (4) est utilisé un matériau de revêtement caractérisé par une viscosité inférieure à 1000 mPa s à une température de traitement comprise entre 20 °C et 120 °C, en particulier entre 60°C et 90°C.
  17. Procédé selon l'une des revendications 11 à 16, caractérisé en ce qu'un système réactif pour produire un revêtement élastomère, de préférence un système multicomposant ayant deux composants ou plus est utilisé, pour obtenir le matériau de revêtement pour la couche structurée intermédiaire côté papier et/ou côté machine (7), le système étant caractérisé par une vie en pot inférieure à 30 secondes, de préférence moins de 15 secondes, de préférence moins de 10 secondes et/ou dans une couche structurée intermédiaire (7) côté papier et/ou côté machine, un matériau de revêtement caractérisé par une viscosité inférieure à 3000 mPa s, de préférence inférieure à 1000 mPa s à une température de traitement comprise entre 20°C et 120°C, en particulier entre 60°C et 90°C, est utilisé.
EP18169648.5A 2017-05-15 2018-04-26 Bande de transfert ou de presse à sabot pour une machine à papier, utilisation de la bande dans une machine à papier et procédé de fabrication de la bande Active EP3404140B1 (fr)

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DE202017102927.1U DE202017102927U1 (de) 2017-05-15 2017-05-15 Transfer- oder Schuhpressenband für eine Papiermaschine sowie Verwendung des Transfer- oder Schuhpressenbandes in einer Papiermaschine

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CL (1) CL2018001309A1 (fr)
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ES (1) ES2747925T3 (fr)
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US5298124A (en) 1992-06-11 1994-03-29 Albany International Corp. Transfer belt in a press nip closed draw transfer
BR9813780A (pt) * 1997-12-17 2000-10-03 Valmet Karlstad Ab Máquina e método para texturizar e secar uma malha de papel fibrosa úmida, correia para a dita máquina e correia e processo para a fabricação de papel
US5972813A (en) * 1997-12-17 1999-10-26 The Procter & Gamble Company Textured impermeable papermaking belt, process of making, and process of making paper therewith
JP3408416B2 (ja) * 1998-02-26 2003-05-19 市川毛織株式会社 シュープレス用ベルト及びその製造法
JP2001089989A (ja) * 1999-09-20 2001-04-03 Ichikawa Woolen Textile Co Ltd 湿紙搬送ベルト及びその製造方法
JP4594536B2 (ja) * 2001-01-17 2010-12-08 イチカワ株式会社 シュープレス用ベルト及びその製造方法
US8058188B2 (en) * 2005-04-13 2011-11-15 Albany International Corp Thermally sprayed protective coating for industrial and engineered fabrics
DE102006024343A1 (de) * 2006-05-24 2007-11-29 Voith Patent Gmbh Transportband für eine Maschine zur Herstellung von Bahnmaterial und Verfahren zur Herstellung eines derartigen Transportbandes
JP4516583B2 (ja) * 2007-05-18 2010-08-04 イチカワ株式会社 シュープレス用ベルト
DE202013104888U1 (de) 2013-10-31 2015-02-02 Heimbach Gmbh & Co. Kg Durchströmbare Bespannung für Papier- oder Zellstoffentwässerungsmaschinen sowie deren Verwendung

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EP3404140A1 (fr) 2018-11-21
BR102018009705A2 (pt) 2018-12-04
DE202017102927U1 (de) 2017-08-09
BR102018009705A8 (pt) 2023-01-10
MX2018005757A (es) 2019-01-10
CL2018001309A1 (es) 2018-08-03
CN108867139B (zh) 2021-03-30
CN108867139A (zh) 2018-11-23
ES2747925T3 (es) 2020-03-12
PT3404140T (pt) 2019-09-12

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