EP2772584A1 - Procédé et agencement pour une ligne de production de bande de fibre - Google Patents

Procédé et agencement pour une ligne de production de bande de fibre Download PDF

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Publication number
EP2772584A1
EP2772584A1 EP13156967.5A EP13156967A EP2772584A1 EP 2772584 A1 EP2772584 A1 EP 2772584A1 EP 13156967 A EP13156967 A EP 13156967A EP 2772584 A1 EP2772584 A1 EP 2772584A1
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EP
European Patent Office
Prior art keywords
substance
rotary
fiber web
suspension
dispersion
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.)
Withdrawn
Application number
EP13156967.5A
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German (de)
English (en)
Inventor
Reijo PIETIKÄINEN
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.)
Valmet Technologies Oy
Original Assignee
Valmet Technologies Oy
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 Valmet Technologies Oy filed Critical Valmet Technologies Oy
Priority to EP13156967.5A priority Critical patent/EP2772584A1/fr
Priority to CN201310581322.5A priority patent/CN104005267A/zh
Publication of EP2772584A1 publication Critical patent/EP2772584A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D21H23/50—Spraying or projecting
    • 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
    • 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

Definitions

  • the present invention relates to a method and an arrangement for a fiber web production line. Especially the invention relates to a method for applying a substance to generate at least one web layer of a fiber web. More especially the invention relates to a method according to the preamble of claim 1 and to an arrangement according to the preamble of claim 6.
  • fiber web producing processes typically comprise an assembly formed by a number of apparatuses arranged consecutively in the process line.
  • a typical production and treatment line comprises a head box, a forming section and a press section as well as a subsequent drying section and a reel-up.
  • the production and treatment line can further comprise other devices and/or sections for finishing the fiber web, for example, a pre-calender, a sizer, a coating section, a final-calender.
  • the production and treatment line also comprises at least one slitter-winder for forming customer rolls as well as a roll packaging apparatus.
  • fiber webs are meant for example a paper and board webs.
  • spray means a system of liquid droplets in gaseous phase i.e. a liquid-air mixture or dispersion, which is provided by atomization process.
  • the sprayed liquid may comprise a solution or mixture of several liquids or fluids.
  • spray may contain solid particles, for example as a result of atomizing solid containing mixtures or suspensions or dispersions or solutions.
  • Spraying process comprises from two sub processes, namely the atomization process itself and the spray particle transfer process to the object surface.
  • the atomization process i.e. disruption of liquid or solid phase into smaller particles or droplets is typically based on aerodynamic shear forces and friction between sprayed material and other medium, typically surrounding gas. Speed differences between the two mediums are created in various ways, like by hydraulic pressure in pressure nozzles and by pneumatic air pressure in air atomization nozzles.
  • the sprayed liquid is influenced by cohesive forces resisting droplet formation.
  • the disruptive forces like shear forces or inertial forces created by the atomizer tend to break the continuous liquid phase, and as soon as disruptive forces are greater than the cohesive forces droplets are formed.
  • the fluid viscosity and surface tension have an effect on the droplet formation and spray generation.
  • the other subprocess in the spraying, the spray particle transfer to the object surface utilize typically means, like guiding air flows or assisting electrostatic charge fields, to control spray jet shape, movement and setting to the target surface.
  • Prior art known atomizers include for example a single fluid hydraulic pressure nozzle, a two-fluid gas atomizing nozzle, a centrifugal or rotary atomizer, an ultrasonic atomizer and an electro hydrodynamic atomizer.
  • hydrodynamic pressure atomization with single fluid nozzles the liquid is accelerated by liquid's own pressure, and the liquid's speed, kinetic energy and friction against surrounding medium are the driving mechanisms of atomization.
  • pneumatic or gas assisted atomization with two-fluid nozzles the atomizing gas flow is accelerated and injected adjacent to the atomized fluid.
  • the mixing of air and gas can be either internal or external.
  • the speed difference, friction and shear forces between the two mediums are main mechanisms of atomization.
  • the fluid In centrifugal, or rotary, atomization the fluid is applied on a fast spinning disk or wheel, where fluid picks up momentum as the centrifugal force accelerates the fluid, and fluid flows towards the outer edge of the disk, where eventually the droplet formation and atomization takes place at as the fluid leaves the disk.
  • the fiber web is formed on a forming section after the head box, which feeds the fiber suspension to a moving wire.
  • the task of the forming section is to remove water from the suspension fed by the headbox keeping a good formation.
  • the consistency of fiber suspension fed onto the forming section is usually 1% and, after the forming section, the consistency of the web formed on the forming section is usually 18- 20 %.
  • the higher feeding consistency usually makes the formation worse, which has a negative effect on web end properties. Thus, higher feeding consistencies than 1.5 % are avoided in the typical fiber web production.
  • US patent 3475198 is disclosed a rotary atomizing process and dispensing equipment for applying liquid binders in manufacturing of nonwoven fiber webs.
  • This known process is for treating a loose fiber structure in a web, in which the fibers should not be disturbed by air flows, and for applying high viscous liquid binders that are hard to atomize, like starch and polyvinyl-acetate.
  • a rotary atomizer is used to avoid problems of nozzle clogging and to increase obtained flow rate with use of high voltage electrostatic field for improving spray particle transfer efficiency.
  • US patent 3484275 is disclosed a method of applying coating to moving, for example paper web by electrostatic deposition, in which atomized coating is transferred under influence of electrostatic forces and atomizing can be done for example by a rotating disk.
  • US patent 6866207 is disclosed a swirling gas atomizer for dispensing liquids and highly viscous or otherwise difficult to dispense solutions of liquids and solids to a mist with desired properties.
  • An apparatus is disclosed for spraying of liquids and solution containing solid particles such as paper fibers and fillers for high consistency paper manufacturing, paper surface treatments, mixing of chemicals and chemical reactions. The apparatus allows web forming in the paper machines with consistencies reaching up to 15%.
  • the atomizer comprises elongated tubing, an intake orifice disposed on one end of the tubing, a nozzle assembly affixed to the opposite end of the tubing, a first nozzle element extending from the nozzle assembly at an angle with respect to the axis of the tubing, a swirl wheel and cone former concentrically disposed with respect to the tubing and adopted to receive propellant gas from the first nozzle element, and the cone former comprising a swirl ledge angled inwardly with respect to the axis of the tubing.
  • US patent 7217342 is disclosed a process that can utilize current paper manufacturing facilities by adding consecutive spray apparatuses that can make and/or enhance the manufacture of a multitude of specific paper product on-line, or improve the properties of already formed paper products with consequent spraying steps on-line or off-line.
  • An apparatus for paper making comprising a spray box, a paper web substrate moveable below the spray box, multiple nozzles mounted inside the spray box for cross-sectional profiling achieved by means of each nozzle spraying a controlled amount or suspended solids including fibers, minerals and chemicals onto the substrate, the spray box including a substrate entry point and a substrate exit point, the entry and exit points comprising respectively adjustable entry and exit gaps disposed above the substrate, aerosols emitting from the nozzles, means to remove the aerosols from the spray box, a device for smoothening the surface characteristics of the suspended solids having a distal end, the distal end being adjacent a point on one side of the substrate, a rolled disposed on the other side of the substrate and in abutment therewith, and the adjacent point being space laterally along the substrate from the location of the abutment.
  • the high consistency fiber mixtures or suspensions or dispersions are difficult to pump and atomize, since the fibers tend to form a networked structures. If the flow speed is too low, plugging may result and fluidization is necessary before pumping or spraying.
  • Fiber containing mixtures or suspensions or dispersions or solutions have typically very high viscosity and they have shear thinning character. In measurements done (measured by the Brookfield viscometer at 100 rpm, using spindle no 2 ), typical viscosity has been found to be clearly over 100 cP, typically 500 - 10000 cP or even more, at consistency of 5 %.
  • fiber containing substances at high consistency, typically over 5%, or at high viscosity, typically 100 - 1000 cP or more.
  • spraying and atomizing applications in fiber web production are limited due to low flow rate (about 0.5 I/min per nozzle), usable consistency (typically below 5-8% for air atomizing nozzles) and viscosity (below about 100 cP).
  • the substances applied by fluid nozzles have thus in practice been applied as low consistency mixtures or suspensions or dispersions or solutions of water.
  • An object of the present invention is to create a new method and a new arrangement for applying substances, which have high consistency, over 5 %, advantageously over 10%, in form of mixture or suspension or dispersion or solution, to generate at least one web layer of a fiber web.
  • an object of the present invention is to provide method and arrangement for applying substances in fiber web production that is utilizable in generating of the fiber web.
  • the method for applying a substance to generate at least one web layer of a fiber web is mainly characterized by the features of the characterizing part of claim 1.
  • the arrangement for applying a substance to generate at least one web layer of a fiber web is in turn mainly characterized by the features of the characterizing part of claim 6. Further advantageous aspects and features of the invention are presented in the dependent claims.
  • fiber and fiber containing material substance comprising fibers, fiber-like materials of natural or synthetic origin, fine fractions of fibers, screened to suitable coarseness, nanocellulose in its various forms, NFC (nanofibrillated cellulose); MFC (microfibrillated cellulose), refined or beaten pulps, chemically or mechanically processed pulps.
  • the fiber containing material may also comprise for example fillers, pigments and binders.
  • a layer of a fiber web in this description and the claims is used mainly in the meaning of the manufacturing sense of the fiber web and thus in the finished fiber web product a layer is not necessarily visible or separable and the layers may not have a distinct border as two layers may have combined layer structure in between of them.
  • a substance in form of mixture or suspension or dispersion or solution is applied on a moving surface by at least one spraying and atomizing means.
  • the at least one web layer of fiber web is generated on to moving surface by providing by the at least one spraying and atomizing means an atomized substance spray comprising fiber and/or fibrous particles to apply substance mixture or suspension or dispersion or solution flow as a high viscosity and high consistency mixture or suspension or dispersion or solution, which has the consistency over 5%, preferably over 10%, and the substance flow is sprayed and atomized by an applicator comprising at least one rotary application means and that fiber web is generated partly of completely by applying fiber containing substance in form of mixture or suspension or dispersion or solution by a contactless method.
  • the arrangement for applying a substance to generate at least one web layer of a fiber web comprises at least one atomizing means and moving surface and at least one rotary application means as an applicator for spraying and atomizing the substance of mixture or suspension or dispersion or solution with high viscosity and high consistency, in which the substance contains fiber particles and/or fiber-like particles and has consistency over 5%, preferably over 10%.
  • the materials to be applied with a rotary atomizer are in the form of mixtures or suspensions or dispersions or solutions containing fiber and/or fibrous particles and organic or inorganic solid particles, in particular other fiber web raw material components.
  • the at least one rotary application means is a rotary atomizer, which creates mist-like substance flow based on centrifugal forces and atomizing is provided by the rotational movement creating high speed to the substance.
  • the centrifugal forces, and the atomization can be provided in the rotary applicator by various rotating elements, such as rotor, disk, cup, bowl, blade wheel, vaned wheel, impeller, porous wheel or similar element.
  • Rotary disk atomizers the substance to be atomized is applied on a rotating disk or wheel or corresponding rotating element, which is rotated at high speed, which in turn accelerates the liquid and discharges spray at the disk edge.
  • Droplet size in atomizing can be controlled by the rotational speed.
  • the rotating elements may have various designs.
  • Rotary bell cup atomizers comprise a rotary disk atomizer with bell shaped cup inside of which cup liquid to be atomized is supplied. When the cup is rotated centrifugal forces push liquid film along the cup surface towards the outer edge, where liquid is ejected as small droplets and spray is created.
  • the spray can be additionally controlled by shaping air or by electrostatic assistance.
  • rotary application means a rotary disk atomizer or a rotary bell cup atomizer is used.
  • high viscosity fluid can be atomized and a high flow rate is provided.
  • high consistency fluids can be atomized; the solid content can be up to 70 % and thus less water needs to be removed and dried and energy savings are achieved.
  • rotary atomizer contains at least one rotating element, which is for example a flat disk, a bowl, a cup, an impeller, a vaned wheel or a porous wheel.
  • the substance to be applied to web contains at least two of the following materials: organic or inorganic fibers, organic or inorganic fillers, pigments and binders, solvent fluids (like water) and additional materials like chemicals needed in fiber web making.
  • the fibers are the main component of the applied mixture, which is in the form of mixture or suspension or dispersion at 5 - 25 % consistency.
  • the substance applied contains fibers of following kind: short fibers, long fibers; nanosellulose fibers, nanofibrillated cellulose (NFC); microfibrillated cellulose (MFC); mechanical pulp or chemical pulp or combination of them, or recycled fibers.
  • fibers of following kind short fibers, long fibers; nanosellulose fibers, nanofibrillated cellulose (NFC); microfibrillated cellulose (MFC); mechanical pulp or chemical pulp or combination of them, or recycled fibers.
  • high flow rate for spraying to substance to be applied is advantageously used.
  • the flow rate is 0.5 - 1000 kg/min per applicator unit.
  • the flow is advantageously 0.5-10 kg/min, in forming single web layers the flow is advantageously 10-100 kg/min and in forming thick main bulk layers or the whole web structure the flow is 100 - 1000 kg /min.
  • the droplet size for the atomized fluid substance is about 20 - 200 ⁇ m, advantageously 30 - 100 ⁇ m.
  • the solid phase particle size in the spray remains unchanged, but the fluid phase is atomized to smaller particles, typically to 20- 200 ⁇ m droplets.
  • the fiber orientation of the fiber web is largely random and isotropic material properties are achieved. This is very beneficial regarding the dimensional stability, particularly by reducing the sheet curling and dimensional changes in CD and MD directions of paper sheets.
  • At least the one layer is generated according to this aspect by using rotary application means and other layers can advantageously be generated by conventional means like wet forming or alternatively, by air laid forming, or foam forming, by which a very porous web is achieved.
  • the substance comprising fibers and possible additives is applied as a mixture or suspension or dispersion by the rotary application means on to a moving surface for example on to the forming wire or directly on the fiber web.
  • suction means like vacuum box, can be provided.
  • a fluffy and bulky fiber web is produced.
  • a layered structure of a fiber web with web layers of different properties can be provided by applying with successive rotary application means substances of different compositions.
  • the head-box is no longer needed in the fiber web production line.
  • a high viscosity barrier layer is applied as water mixture or suspension or dispersion or solution of high solids content and high viscosity by the rotating application means on the fiber web.
  • the barrier layer is a thin, dense polymer layer and it comprises for example polymers, like polyolefin or polyethylene, polypropylene, PVOH or PVA or special polymers or nanocellulose in various forms.
  • the application by the rotary application means can be direct i.e. the substance is applied directly on the fiber web or indirect i.e. the substance is first applied on a moving surface, for example wire, felt, belt, metal belt, or on a roll, from where the substance is later transferred to the fiber web.
  • the applied substance is heated before applying it by the rotary application means, which results as better flattening, setting and faster drying of the applied layer.
  • substance is mixed with another substance in the applicator's rotor element, providing a local mixing process in the applicator.
  • a fast reactive chemical can be mixed as the last stage just before atomization and application on to the web.
  • Rotary element works as a rotary mixer and a chemical reactor.
  • the mixed substances are fed to the mixer through separate feed lines.
  • Second mixed substance can be for example liquid, filler, fiber, chemical etc.
  • applied substance starts drying due to water evaporation while still being airborne, and at least partly dries before the substance is laid at the fiber web.
  • the evaporation is enhanced by the heating, and droplet size control.
  • the substance is applied to the fiber web, which is a tissue web, a paper web or a board web, or specialty paper or specialty board product.
  • the method and arrangement according to the invention is advantageously utilized for applying substances in the fiber web production in coating or sizing of fiber web by a layer of coating containing fibrous or fiber based materials.
  • the coating color is the main component of the applied substance, which is in the form mixture or suspension or dispersion or solution at 5 - 70 % consistency.
  • the sizing agent is the main component of the applied substance, which is in the form liquid mixture or suspension or dispersion or solution of sizing agents at 5 - 30% consistency.
  • the invention provides for an effective means for applying a substance of high consistency and high viscosity by spraying and atomizing.
  • the amount to be sprayed can be controlled independently by infeed flow rate.
  • the particle size of atomized spray can be controlled separately by the rotation speed of the rotary element.
  • the arrangement construction needed for the method is simple, basically only pressurized air or gas and an inlet piping to the rotary application means are needed.
  • the invention also provides for high consistency and viscosity forming possibilities with better retention and less circulation water. Also new types of fiber web products can be produced, for example replacing pigment coating by fiber containing coatings. Further advantages are achieved as the nozzles of advantageously used rotary atomizers are not sensitive to plugging or wearing, which results savings in downtime of machine, maintenance work and cost.
  • the at least one spraying and atomizing means provides an advantageous atomizing system having higher throughput flow rate than conventional fluid nozzle technology, being over 0.5 kg/min per nozzle, favorably 0.5-10 kg/min, particularly favorable 10-100 kg/min and in extremely demanding applications 100-1000 kg/min per nozzle, enabling to spray materials at high flow rate to generate at least one web layer of the fiber web, making spray forming a realistic option, and additionally reducing the number of nozzles and saving assembly space.
  • the advantageous atomizing system atomizes high consistency and high viscosity substances, like liquids and liquid-solid systems, mixtures or suspensions or dispersions or solutions and the like, effectively to generate at least one web layer of the fiber web, the consistency of the said substances being over 5 %, advantageously over 15 % and even over 20 %, said materials being applied on to a moving surface, for example on to a fiber web machine fabric or on the fiber web.
  • the invention provides for a new kind of manufacturing and finishing processes of fiber webs, as well as manufacturing completely new value added fiber products, produced efficiently in large volumes in web like manner.
  • an atomizer with ability to atomize high consistency and high viscosity mixtures or suspensions or dispersions or solutions, having high atomizing throughput flow rate, being installable in compact way in small space, having low feed line pressure, being insensitive to applicator clogging and dirt build-up and fouling and being easy to clean many advantages are achieved.
  • the invention is utilizable in fiber web production for different types of end products, for example for packaging boards with bulky or multi-layer structure or lamination or barrier layers, for liquid and household packaging boards with barrier layer or polymer coatings, high quality surface and lacquering, for beverage and food packaging boards with barrier layers and high strength, for cosmetic and luxury boards with lacquering, barrier layers, polymer coatings or lamination layers, for pharmaceutical and other special packaging boards with barrier layers or lamination, for decorative boards with special coatings or painting like effects and for graphical papers and boards.
  • the invention is applicable in producing bulky paper, board or tissue webs.
  • the invention can also be utilized in finishing the fiber web, in which at least one web layer of the fiber web has been provided according to the invention such that a layer of coating or sizing substance is applied on to the fiber web by at least one rotary application means and provide the fiber web thus with a sizing or coating substance, preferably of high consistency and high viscosity.
  • the coating substance comprises pigment, binders, fillers and solvent and is applied as water mixture or suspension or dispersion with high solids content and high viscosity.
  • the sizing substance comprises starch or latex or other sizing agents and it is applied as water mixture or suspension or dispersion or solution.
  • the sizing or coating substance can also be applied by several successive rotary means to create a layered sizing or coating on the fiber web.
  • the rotary application means is provided in location/-s of the fiber web production line depending on the desired purpose of the application and the application is advantageously done in forming section of the fiber web production line.
  • forming section is advantageously produced the main layers of the fiber web by the rotary application means and in pressing or drying section an additional layer can be applied.
  • finishing section advantageously the fiber web is sized and/or coated by the rotary application means
  • figure 1 is schematically shown one example of a rotary application means
  • figure 2 is schematically shown another example of a rotary application means
  • figure 3 is schematically shown an example of part of a fiber web production line with arrangements according to examples of the invention
  • figure 4 is schematically shown another example of part of a fiber web production line with arrangements according to examples of the invention.
  • FIG 1 is schematically shown one example of a rotary application means 10, which is a rotary disk atomizer and comprises a disk 11 that is arranged rotatably on a shaft 12.
  • the rotary disk atomizer further comprises an actuator 13 for providing the rotational movement of the disk 11.
  • Substance to be applied is supplied on the rotating disk 11 by a fluid tube 15 or corresponding inlet channel.
  • the control means 14 controls the rotation speed of the disk 11 by controlling the actuator 13 and the control means 16 controls the substance amount to be supplied on the disk 11.
  • centrifugal forces spray and atomize the substance over the edge of the disk and to the desired moving surface, for example on to a forming wire or on the fiber web.
  • a rotary application means 10 which is a rotary bell cup atomizer and comprises a bell cup 17 that is arranged rotatably on a shaft 12.
  • the rotary disk atomizer further comprises an actuator 13 for providing the rotational movement of the bell cup 17.
  • Substance to be applied is supplied to the bell cup 17 by a fluid tube 15 or corresponding inlet channel.
  • the control means 14 controls the rotation speed of the bell cup 17 by controlling the actuator 13 and the control means 16 controls the substance amount to be supplied in to the bell cup 17.
  • centrifugal forces transfer the substance on the inner surface of the bell cup 17 towards the edge, and throw the substance over the edge, atomizing and spraying the substance to the desired moving surface, for example on to a forming wire or on the fiber web.
  • FIG. 3 and 4 is schematically shown some locations of a fiber web production line where the arrangement according to the invention can be located and where the method according to the invention can be utilized.
  • rotary atomizers 101, 102, 104, 104 each are located to atomize and spray fiber substance to generate respective web layers W1, W2, W3, W4 of the fiber web.
  • the first rotary atomizer 101 is located such that it sprays the substance on to a moving wire 20 to generate first web layer W1 or the fiber web.
  • the moving wire 20 can be for example a forming wire type of wire and it has been arranged as a continuous, moving loop guided by its guide rolls.
  • the following rotary atomizers 102, 103 spray the fiber substance to generate next web layers W2, W3.
  • the fourth rotary atomizer 104 is also as the first rotary atomizer 101, arranged to spray fiber substance on to a wire 30, which then transfers the respective web layer W3 on to the fiber web.
  • the web layers W1, W2, W3, W4 are pressed to remove water and in dryer section 50 the fiber web is dried.
  • 40 loops vacuum devices can be arranged for suction to improve the stability of the web layer W1, W4 on the wire 20, 30 and also if needed to remove water.
  • rotary atomizers 10 are located to atomize and spray fiber substance to generate web layers of a fiber web W.
  • the first web layer is generated by a head-box 60 and the first rotary atomizer 10a is located such that it sprays the substance on to the moving fiber web W supported by a forming wire 20 to generate next web layer.
  • the moving wire 20 can be for example a forming wire type of wire and it has been arranged as a continuous, moving loop guided by its guide rolls.
  • the following rotary atomizer 10b spray the fiber substance to generate next web layer, which is also arranged to spray fiber substance on to a wire 30, which then transfers the respective web layer on to the fiber web W.
  • each rotary atomizer 10 comprises one or more atomizing and spraying units.
  • the rotary atomizers 10a and 10b comprise several units. It should be understood that the process line layout, the locations and the number of rotary units are only examples of possible implementations.

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EP13156967.5A 2013-02-27 2013-02-27 Procédé et agencement pour une ligne de production de bande de fibre Withdrawn EP2772584A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13156967.5A EP2772584A1 (fr) 2013-02-27 2013-02-27 Procédé et agencement pour une ligne de production de bande de fibre
CN201310581322.5A CN104005267A (zh) 2013-02-27 2013-11-19 通过涂覆物质生成纤维幅材的至少一幅材层的方法及装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13156967.5A EP2772584A1 (fr) 2013-02-27 2013-02-27 Procédé et agencement pour une ligne de production de bande de fibre

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SE2050422A1 (en) * 2020-04-15 2021-10-16 Stora Enso Oyj Multilayer film comprising highly refined cellulose fibers
SE2050424A1 (en) * 2020-04-15 2021-10-16 Stora Enso Oyj Multilayer film comprising highly refined cellulose fibers
SE2050423A1 (en) * 2020-04-15 2021-10-16 Stora Enso Oyj Multilayer film comprising highly refined cellulose fibers
SE2050425A1 (en) * 2020-04-15 2021-10-16 Stora Enso Oyj Multilayer film comprising highly refined cellulose fibers

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FI127630B (en) * 2014-12-17 2018-10-31 Valmet Technologies Inc Fiber forming machine forming unit and secondary forming unit for fiber forming machine multi-layer forming unit
CN108457127A (zh) * 2017-02-20 2018-08-28 山东太阳生活用纸有限公司 薄页纸及其制备方法
CN108316047A (zh) * 2018-03-28 2018-07-24 华南理工大学 纤维素纳米纤丝增强的二次纤维纸及其制备方法与应用
US10550520B2 (en) * 2018-04-05 2020-02-04 Gl&V Canada Inc. Method with a horizontal jet applicator for a paper machine wet end
CN109115795B (zh) * 2018-09-06 2020-11-13 嘉兴鼎尚信息科技有限公司 雾化系统、使用该雾化系统的检测设备及工作方法
FR3094992B1 (fr) * 2019-04-09 2021-03-12 Kadant Lamort Procede de depot d’une composition a base de fibres cellulosiques sur un support
SE545614C2 (en) * 2020-09-01 2023-11-14 Stora Enso Oyj A method for producing a multilayer machine glazed paper comprising highly refined cellulose fibers and a multilayer machine glazed paper produced

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US3484275A (en) 1965-05-17 1969-12-16 Scott Paper Co Electrostatic deposition of compositions on sheet materials utilizing pre-existing friction induced electrostatic charges on said sheet materials
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SE2050422A1 (en) * 2020-04-15 2021-10-16 Stora Enso Oyj Multilayer film comprising highly refined cellulose fibers
SE2050424A1 (en) * 2020-04-15 2021-10-16 Stora Enso Oyj Multilayer film comprising highly refined cellulose fibers
SE2050423A1 (en) * 2020-04-15 2021-10-16 Stora Enso Oyj Multilayer film comprising highly refined cellulose fibers
SE2050425A1 (en) * 2020-04-15 2021-10-16 Stora Enso Oyj Multilayer film comprising highly refined cellulose fibers
WO2021209915A1 (fr) * 2020-04-15 2021-10-21 Stora Enso Oyj Film multicouche comprenant des fibres de cellulose hautement raffinées
WO2021209918A1 (fr) * 2020-04-15 2021-10-21 Stora Enso Oyj Film multicouche comprenant des fibres de cellulose hautement raffinées
WO2021209917A1 (fr) * 2020-04-15 2021-10-21 Stora Enso Oyj Film multicouche comprenant des fibres de cellulose hautement raffinées
WO2021209916A1 (fr) * 2020-04-15 2021-10-21 Stora Enso Oyj Film multicouche comprenant des fibres de cellulose hautement raffinées
SE544671C2 (en) * 2020-04-15 2022-10-11 Stora Enso Oyj Method for manufacturing a multilayer film comprising highly refined cellulose fibers
SE544670C2 (en) * 2020-04-15 2022-10-11 Stora Enso Oyj A method for manufacturing a multilayer film comprising highly refined cellulose fibers
CN115413288A (zh) * 2020-04-15 2022-11-29 斯道拉恩索公司 包含高度精制的纤维素纤维的多层膜
SE544892C2 (en) * 2020-04-15 2022-12-20 Stora Enso Oyj Method for manufacturing a multilayer film comprising highly refined cellulose fibers, a multilayer film and paperboard comprising said multilayer film
SE544893C2 (en) * 2020-04-15 2022-12-20 Stora Enso Oyj Method for manufacturing a multilayer film comprising highly refined cellulose fibers
CN115413288B (zh) * 2020-04-15 2024-04-30 斯道拉恩索公司 包含高度精制的纤维素纤维的多层膜

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