EP3088604B1 - Verfahren und system zum optimieren der eigenschaften einer mehrschichtigen faserstoffbahn in der faserbahnherstellung - Google Patents

Verfahren und system zum optimieren der eigenschaften einer mehrschichtigen faserstoffbahn in der faserbahnherstellung Download PDF

Info

Publication number
EP3088604B1
EP3088604B1 EP16167211.8A EP16167211A EP3088604B1 EP 3088604 B1 EP3088604 B1 EP 3088604B1 EP 16167211 A EP16167211 A EP 16167211A EP 3088604 B1 EP3088604 B1 EP 3088604B1
Authority
EP
European Patent Office
Prior art keywords
fiber web
dilution
basis weight
strength
stock
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
EP16167211.8A
Other languages
English (en)
French (fr)
Other versions
EP3088604A1 (de
Inventor
Teuvo Virkkunen
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
Publication of EP3088604A1 publication Critical patent/EP3088604A1/de
Application granted granted Critical
Publication of EP3088604B1 publication Critical patent/EP3088604B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/08—Regulating consistency
    • 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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/022—Means for injecting material into flow within the headbox
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0027—Paper-making control systems controlling the forming section

Definitions

  • the present invention relates to a method for the optimization of the properties of a multilayer fiber web in the manufacture of a fiber web, in which method the multilayer fiber web is formed by feeding at least two stock suspensions that form a layer of the fiber web to a forming section from two or more headboxes divided into parallel feed zones, where those properties of the stock suspensions that affect the strength of the finished fiber web differ from each other, and the basis weight profile of the stock suspensions is adjusted in two or more headboxes by feeding dilution water in zones in the cross direction of the fiber web machine into each stock suspension.
  • the present invention also relates to a corresponding system.
  • the cross-directional strength properties of the fiber web are critical in terms of the quality of the product.
  • the objective is to minimize the variation of the cross-directional strength properties of the fiber web in the cross direction of the fiber web.
  • the uneven contraction of the fiber web in the dryer section leads to a deterioration of the cross-directional strength properties on the edges of the fiber web, since there is more contraction on the edges of the fiber web than in the center. Poorer cross-directional strength on the edges of the fiber web may even cause the rejection of edge rolls in quality control, if the edge rolls do not fulfill the strength requirements of the order.
  • the strength problem can be solved by increasing the basis weight of the fiber web on the edges, but in this case expensive raw material is lost when the required basis weight is exceeded in the edge rolls.
  • FI 121888 B presents a method for the optimization of the cross-directional profile of the fiber web.
  • the headbox of the fiber web machine is divided into several parallel feed zones, and at least two different stock suspensions are fed into each of these feed zones.
  • the different stock suspensions contain fractions with different fiber lengths, advantageously the first stock suspension contains short-fiber fraction and the second stock suspension contains long-fiber fraction.
  • the first stock suspension contains short-fiber fraction
  • the second stock suspension contains long-fiber fraction.
  • US 6 284 100 B1 discloses a method and apparatus for controlling the mixing proportions of feed streams being supplied to a headbox, using devices for sampling two or more of the feed streams upstream of the headbox and devices for measuring concentration of constituents in or other properties of those samples.
  • a method of regulating one or more properties of a moving web, and especially a paper web during manufacture, employing the aforesaid method and apparatus are also disclosed.
  • DE 195 14 236 A1 discloses a box for a paper machine for producing two- or multi-layer paper having a number of distributors corresponding to the number of layers. Each of them features a number of connections for the discharge of sub-currents.
  • the sub-currents coming from one distributor are staggered in relation to the currents coming out of another distributor. The staggering occurs transversely to the machine direction.
  • DE 10 2009 028 135 A1 discloses a method involving dividing a head box in multiple parallel food zones. Each food zone is charged with two different material suspensions that are obtained by the fractionation of a material suspension which is introduced in a short fiber fraction and a long fiber fraction.
  • the long fiber fraction contains the long and stiff fibers, where the cross profile of the fiber web is optimized by the regulation of add-on ratio of the short fiber fraction to the long fiber fraction in the individual parallel food zones.
  • WO 2004/109010 A1 discloses a method for manufacturing a multilayer paper or board web containing recycled fiber.
  • the method comprises forming the multilayer web of at least two layers having stock compositions different from each other and diluting the pulp suspension in the formation of each layer with wire water into headbox consistency and feeding it by means of a headbox to a wire section, where the web is dewatered, and joining these layers to form a multilayer web.
  • the method also comprises the step of passing the wire water removed from the wire section in the forming of each layer to be used in the dilution of a pulp suspension, to be fed, of another layer.
  • the object of the present invention is to accomplish a method that is more cost effective than the prior art methods for the optimization of the properties of a multilayer fiber web, and to accomplish a system for the optimization of the properties of a multilayer fiber web, which system is more advantageous to use than prior art systems.
  • the object of the invention is achieved by a method having the features of claim 1 and by a system having the features of claim 5.
  • a method for the optimization of the properties of a multilayer fiber web in the manufacture of a fiber web in which method the multilayer fiber web is formed by feeding at least two stock suspensions that form a layer of the fiber web to a forming section from two or more headboxes divided into parallel feed zones, where those properties of the stock suspensions that affect the strength of the finished fiber web differ from each other.
  • the basis weight profile of the stock suspensions is adjusted in two or more headboxes by feeding dilution water in zones in the cross direction of the fiber web machine into each stock suspension.
  • the cross-directional basis weight profile and strength of the formed fiber web are adjusted in the cross direction of the fiber web machine by adjusting the amount of dilution water in zones separately in each stock suspension fed.
  • the cross-directional strength of the fiber web can refer to the cross-directional compression strength or flat crush resistance. In the case of a multilayer fiber web, these strengths are usually more important strength indicators than tensile strength, which is naturally high in a product like this.
  • One of the two layers in the fiber web is a core layer and the other layer is a surface layer with better strength properties than in the core layer.
  • the strength properties of the layers of the fiber web differ from each other, which enables a change in the strength properties in the fiber web by changing the mutual ratio of the layers.
  • the dilution of the stock suspensions fed can be adjusted independently of each other, in other words the dilution equipment used for the dilutions is not in an adjustment relation with respect to each other.
  • the adjustment of dilution is restricted by a goal to a certain desired basis weight in the fiber web.
  • the basis weight profile of the fiber web is adjusted to an essentially even profile over the width of the fiber web by means of the dilution of the stock suspension that forms the core layer.
  • the basis weight profile of the fiber web is adjusted to an essentially even profile over the width of the fiber web by means of the dilution of the stock suspension that forms the core layer.
  • the dilution of the stock suspension that forms the thicker core layer also gives a greater adjustment response than the adjustment of the stock suspension that forms the thinner surface layer.
  • the strength profile of the fiber web is adjusted to an essentially even profile over the width of the fiber web by means of the dilution of the stock suspension that forms the surface layer.
  • the dilution of the surface layer it is possible to dilute the stock suspension that comes to the center of the fiber web more than the stock suspension that comes to the edges, and in this way savings can be achieved in the raw material costs.
  • an essentially even basis weight profile means that the variation of basis weight in the cross direction of the fiber web is less than ⁇ 1 g/m 2 .
  • Essentially even strength properties mean that the cross-directional strength properties of the fiber web vary no more than ⁇ 2 %.
  • the basis weight profile of the fiber web is measured as an online measurement, and on the basis of the measurement result the dilution of the stock suspension that forms the core layer is adjusted in individual feed zones.
  • the adjustment works as a feedback control circuit, and the basis weight profile can be adjusted easily in order to change the basis weight of the finished fiber web when shifting over from one grade to another.
  • the stock suspension fed to the core layer is diluted more in those feed zones of the headbox that form the edge area of the core layer of the fiber web than in those feed zones that form the center part of the fiber web.
  • a greater part of the total basis weight of the fiber web on the edges can be composed of a surface layer that has better strength properties than the core layer, which surface layer produces the effect that improves the strength properties of the edges of the fiber web.
  • two or more headboxes are used, each adapted to feed one stock suspension.
  • the use of separate headboxes enables a conventional design of the fiber web machine, where the different layers of a finished multilayer fiber web are formed initially on their own forming sections and are combined later into a uniform fiber web on the forming section.
  • a system for the optimization of the properties of a multilayer fiber web in the manufacture of a fiber web includes two or more headboxes for the feeding of at least two different stock suspensions to form at least two layers of the fiber web, the strength properties of which differ from each other such that one of said two layers of the fiber web is a core layer and the other layer is a surface layer with better strength properties than in said core layer, and a dilution equipment divided into feed zones in the cross direction of each headbox, adapted in connection with the two or more headboxes for the dilution of the stock suspensions in zones in the cross direction of each headbox in at least some of the feed zones for the optimization of the properties of the fiber web.
  • the dilution equipment is adapted to adjust separately in zones the amount of dilution water in each stock suspension fed for the adjustment of the cross-directional basis weight profile and strength of the formed fiber web in the cross direction, to adjust the basis weight profile of the fiber web to an essentially even profile over the width of the fiber web by means of the dilution of the stock suspension that forms said core layer, and to adjust the strength profile of the fiber web to an essentially even profile over the width of the fiber web by means of the dilution of the stock suspension that forms said surface layer.
  • the system according to the invention is very advantageous to implement, because the system can be implemented without a complex headbox design and control system.
  • the system includes two headboxes, each for feeding one stock suspension, in which system the dilution equipment is adapted in connection with both headboxes.
  • the dilution equipment of the different stock suspensions is advantageously independent of each other.
  • the dilution of the stock suspensions can be adjusted independently of each other, in other words the dilution equipment used for the dilutions is not in an adjustment relation with respect to each other.
  • the adjustment of dilution is restricted by a goal to a certain desired basis weight in the fiber web.
  • a characteristic feature of the method according to the invention is that the cross-directional basis weight profile and strength of the formed fiber web in the cross direction of the fiber web machine are adjusted in the method by adjusting the amount of dilution water in zones separately in each stock suspension fed.
  • a characteristic feature of the system according to the invention is that the dilution equipment is adapted to adjust separately in zones the amount of dilution water in each stock suspension fed for the adjustment of the cross-directional basis weight profile and strength of the formed fiber web in the cross direction of the fiber web machine.
  • the advantage to be achieved with the method and system according to the invention is an essentially straight basis weight profile in the cross direction of the fiber web and an essentially straight strength profile in the cross direction.
  • a system 100 includes at least two headboxes 12 for the feeding of at least two different stock suspensions onto a forming section 50 of a fiber web machine 200 to form a fiber web 10.
  • two or more separate headboxes 12 each have dilution adjustment for one stock suspension.
  • there can be dilution adjustments in more numerous feeds of stock suspensions fed but in its simplest configuration the invention can be implemented by means of two dilution adjustments. So that the dilution adjustment gives the desired outcome, in other words even basis weight profile and strength profile in the cross direction of the fiber web, the dilution adjustments must be in stock suspensions where the properties of the stock suspensions differ from each other.
  • the core layer that forms the core of the fiber web in a multilayer fiber web contains a cheaper raw material than the surface layer, which cheaper raw material contains more short fiber than the surface layer and which has a poorer strength than the surface layer.
  • the surface layer is composed of a more expensive raw material than the core layer, in which more expensive raw material the proportion of long fibers is greater than in the core layer, and consequently also the strength of the layer of the fiber web formed is better than in the core layer.
  • Figure 1 shows the first embodiment of the system according to the invention, in which first embodiment two separate headboxes 12 are used, each equipped with dilution adjustment.
  • the dilution adjustment is implemented by means of dilution equipment 32 placed in connection with the headboxes 12.
  • the dilution equipment 32 can be, in accordance with Figure 4 , feed lines coming to the headbox 12, which feed lines feed into the headbox water or a stock suspension with a considerably higher water content than in the stock suspension fed on the headbox for the dilution of the fed stock suspension in zones in the cross direction of the fiber web.
  • each layer of the finished fiber web is formed on its own wire 42 and 44, which combine the layers into a finished fiber web 10 in a later stage.
  • the fiber web machine can also include a separate top wire cycle 40 in accordance with Figure 1 .
  • reference number 46 refers to the press section of the fiber web machine.
  • Figure 2 shows the second embodiment of the system 100 according to the invention, in which embodiment the multilayer fiber web produced consists of three separate layers.
  • the system has three headboxes 12, and there is dilution equipment in connection with at least two of these headboxes.
  • the left-hand side headbox 12 feeds the stock suspension of the core layer
  • the middle headbox 12 feeds the stock suspension of the intermediate layer
  • the right-hand side headbox 12 feeds the stock suspension of the surface layer.
  • the dilution equipment is advantageously in the headboxes that form the core and surface layers and the intermediate layer can be without dilution, because the cross-directional adjustment of the basis weight profile and strength profile according to the invention can be done by means of two dilution adjustments.
  • each headbox 12 used in the system according to the invention is divided into several feed zones 18 in the cross-direction of the fiber web.
  • the width of an individual feed zone is 40 - 120 mm, in which case the headbox is divided into dozens, even to more than one hundred feed zones, each of which can be adjusted for dilution independently of each other.
  • each headbox equipped with dilution adjustment includes dozens, even hundreds of control valves 66 and their control devices (not shown in the figures) for adjusting the dilutions.
  • At least two different stock suspensions are fed from two or more headboxes 12 for the forming of a multilayer fiber web 10.
  • a certain basis weight such as 100 g/m 2 , has been specified for the produced multilayer fiber web in the order, which basis weight is the minimum basis weight of the fiber web in all reels.
  • the objective is that the basis weight of the fiber web produced comes as close to the target as possible; however, so that the basis weight of the entire fiber web is above the minimum basis weight specified in the order.
  • the feed ratio of the stock suspensions is defined initially and the flows are adapted so that the total basis weight of the layers that form the fiber web exceeds the target.
  • the basis weight of the core layer can be 75 g/m 2 and the basis weight of the surface layer can be 25 g/m 2 , in which case the basis weight of the two-layer fiber web is 100 g/m 2 .
  • the fiber web is formed using rough settings, and the strengths and basis weight of the finished fiber web are measured.
  • the measurement of basis weight can be carried out as an online measurement 24 shown in Figures 1 and 2 , but the strengths must be calculated from samples taken from the fiber web using a laboratory analysis.
  • the measurement instrument used for the online measurement of basis weight can be a basis weight scanner of the type known from prior art.
  • the basis weight of the surface layer is advantageously at least 25 g/m 2 so that a surface layer essential for the appearance and printability of the fiber web is formed on the fiber web.
  • the system advantageously includes programmatic equipment for controlling dilution.
  • the programmatic equipment can be a part of a computer or a part integrated into or connected to the control system of the fiber web machine, by means of which programmatic equipment the functioning of the dilution equipment can be controlled.
  • the dilution equipment can include valves for restricting the flow of dilution water or corresponding medium, and valve control equipment, which can advantageously be controlled via a field bus by means of the programmatic equipment.
  • the valve control equipment is advantageously electric actuators.
  • the programmatic equipment can be automatic equipment, which controls, on the basis of pre-set criteria, the valves of the dilution equipment to adjust the dilution flows.
  • the selected criteria can include the difference between the strength measured on the basis of individual feed zones of the headbox and the target, the difference between the measured basis weight and the target, or some other corresponding criterion. In dilution, it is also possible to use the filtrates of wires or other corresponding waters that do not contain much fibers.
  • the measurement results of the basis weight and strengths of the fiber web are advantageously fed to the programmatic equipment, which studies how close to the target the evenness of the cross-directional basis weight profile and strength profile of the fiber web are.
  • the programmatic equipment can be adapted to adjust the basis weight profile on the basis of the measured difference by only adjusting the dilution equipment of the stock suspension that forms the core layer.
  • the basis weight profile is adjusted by increasing or decreasing the dilution of the core layer with respect to the target.
  • the dilution of the core layer can be adjusted by individual feed zones using the feed zones of the headbox, until an even/straight basis weight profile is achieved in the cross direction of the fiber web.
  • the goal is to achieve the set strength target by using the programmatic equipment.
  • a new strength measurement is carried out in terms of the fiber web that has a straight cross-sectional basis weight profile.
  • the dilution of the stock suspension coming to the surface layer is decreased on the basis of the differences in the strengths at different points in those zones where the strength of the fiber web is too low.
  • the decrease in dilution increases the amount of fiber coming to the surface layer in this feed zone of the headbox and increases the basis weight. Dilution can be added by means of the programmatic equipment to compensate for this change in those feed zones of the headbox that form the core layer and that correspond to the adjustable feed zones of the surface layer.
  • the stock suspension fed to the core layer 20 is generally diluted more in those feed zones of the headbox that form the edge area 26 of the core layer 20 of the fiber web 10 than in those feed zones 18, shown in Figure 4 , that form the center part 28 of the fiber web 10.
  • more long-fiber fiber fraction of the surface layer 22 can be brought to the edge areas 26, which long-fiber fiber fraction reinforces the edge areas, which become naturally weaker during the drying of the fiber web.
  • the mutual relationship of the basis weights of the layers 16 varies in the cross direction of the fiber web 10.
  • the cross-directional optimization of the basis weight profile and strength profile of the fiber web can be carried out by means of the method according to the invention by using separate headboxes equipped with dilution adjustment.
  • the dilutions of the stock suspensions fed, forming the various layers, can be adjusted independently of each other.
  • the multilayer fiber web manufactured by means of the method and system according to the invention is board used in exterior packaging, where the core layer of the board is formed from a raw material which results in a layer that has a poorer strength and cheaper costs than the surface layer, and the surface layer, in turn, is more expensive and stronger than the core layer.
  • the invention relates to a method for the optimization of the properties of a multilayer fiber web (10) in the manufacture of a fiber web (10), in which method the multilayer fiber web (10) is formed by feeding at least two stock suspensions that form a layer (16) of the fiber web (10) to a forming section (50) from two or more headboxes (12) divided into parallel feed zones (18), where those properties of said stock suspensions that affect the strength of the finished fiber web differ from each other, and the basis weight profile of said stock suspensions is adjusted in two or more headboxes (12) by feeding dilution water in zones in the cross direction of the fiber web machine into each stock suspension.
  • the cross-directional basis weight profile and strength of the formed fiber web (10) are adjusted in the cross direction of the fiber web machine by adjusting the amount of dilution water in zones separately in each stock suspension fed.
  • the invention also relates to a corresponding system.

Landscapes

  • Paper (AREA)
  • Nonwoven Fabrics (AREA)

Claims (6)

  1. Verfahren für die Optimierung der Eigenschaften einer mehrschichtigen Faserstoffbahn (10) bei der Herstellung einer Faserstoffbahn (10), wobei in dem Verfahren die mehrschichtige Faserstoffbahn (10) durch Zuführen von zumindest zwei Stoffsuspensionen, die eine Schicht (16) der Faserstoffbahn (10) ausbilden, zu einer Formierpartie (50) aus zwei oder mehreren Stoffaufläufen (12), die in parallele Zufuhrzonen (18) unterteilt sind, ausgebildet wird, wo sich diejenigen Eigenschaften der Stoffsuspensionen, die die Festigkeit der fertigen Faserstoffbahn beeinflussen, voneinander unterscheiden, und das Flächengewichtsprofil der Stoffsuspensionen in zwei oder mehreren Stoffaufläufen (12) durch Zuführen von Lösungswasser in Zonen in der Querrichtung der Faserbahnmaschine in jede Stoffsuspension eingestellt wird, wobei in dem Verfahren das Querrichtungsflächengewichtsprofil und die Festigkeit der ausgebildeten Faserstoffbahn (10) in der Querrichtung der Faserstoffbahn durch Einstellen der Menge des Lösungswassers in Zonen separat in jeder zugeführten Stoffsuspension eingestellt wird, wobei eine der zwei Schichten (16) der Faserstoffbahn (10) eine Kernschicht (20) ist und die andere Schicht eine Oberflächenschicht (22) ist, die bessere Festigkeitseigenschaften hat als die Kernschicht (20), wobei in dem Verfahren sowohl das Flächengewichtsprofil der Faserstoffbahn (10) auf ein im Wesentlichen gleichmäßiges Profil über die Breite der Faserstoffbahn (10), das heißt die Variation des Flächengewichts in der Querrichtung der Faserstoffbahn beträgt weniger als ± 1g/m2, mittels der Lösung der Stoffsuspension, die die Kernschicht (20) ausbildet, eingestellt wird als auch das Festigkeitsprofil der Faserstoffbahn (10) auf ein im Wesentlichen gleichmäßiges Profil über die Breite der Faserstoffbahn, das heißt die Querrichtungsfestigkeitseigenschaften der Faserstoffbahn variieren nicht mehr als ± 2%, mittels der Lösung der Stoffsuspension, die die Oberflächenschicht (22) ausbildet, eingestellt wird.
  2. Verfahren nach Anspruch 1, wobei das Flächengewichtsprofil der Faserstoffbahn (10) als eine Onlinemessung (24) gemessen wird, und auf der Grundlage des Messergebnisses die Lösung der Stoffsuspension, die die Kernschicht (20) ausbildet, in individuellen Zufuhrzonen (18) eingestellt wird.
  3. Verfahren nach Anspruch 1 oder 2, wobei die Stoffsuspension, die zu der Kernschicht (20) zugeführt wird, in denjenigen Zufuhrzonen (18) des Stoffauflaufs stärker gelöst wird, die den Randbereich (26) der Kernschicht (20) der Faserstoffbahn (10) ausbilden, als in denjenigen Zufuhrzonen (18), die den mittleren Teil (28) der Faserstoffbahn (10) ausbilden.
  4. Verfahren nach einem der Ansprüche 1 bis 3, wobei zwei Stoffaufläufe (12) verwendet werden, wobei jeder Stoffauflauf (12) angepasst ist, um eine Stoffsuspension zuzuführen.
  5. System für die Optimierung der Eigenschaften einer mehrschichtigen Faserstoffbahn bei der Herstellung einer Faserstoffbahn, das zwei oder mehrere Stoffaufläufe (12) zum Zuführen von zumindest zwei unterschiedlichen Stoffsuspensionen, um zumindest zwei Schichten (16) der Faserstoffbahn (10) auszubilden, wobei sich die Festigkeitseigenschaften dieser Schichten voneinander derart unterscheiden, dass eine der zwei Schichten (16) der Faserstoffbahn (10) eine Kernschicht (20) ist und die andere Schicht eine Oberflächenschicht (22) ist, die bessere Festigkeitseigenschaften hat als die Kernschicht (20), und eine Lösungsanlage (32) aufweist, die in Zufuhrzonen (18) in der Querrichtung jedes Stoffauflaufs (12) unterteilt ist, die in Verbindung mit den zwei oder mehreren Stoffaufläufen (12) für die Lösung der Stoffsuspensionen in Zonen in der Querrichtung jedes Stoffauflaufs (12) in zumindest einigen der Zufuhrzonen (18) für die Optimierung der Eigenschaften der Faserstoffbahn (10) angepasst sind, wobei die Lösungsanlage (32) angepasst ist, um die Menge des Lösungswassers in jeder zugeführten Stoffsuspension für die Einstellung des Querrichtungsflächengewichtsprofils und der Festigkeit der ausgebildeten Faserstoffbahn in der Querrichtung in Zonen separat einzustellen, um das Flächengewichtsprofil der Faserstoffbahn (10) auf ein im Wesentlichen gleichmäßiges Profil über die Breite der Faserstoffbahn (10), das heißt die Variation des Flächengewichts in der Querrichtung der Faserstoffbahn beträgt weniger als ± 1g/m2, mittels der Lösung der Stoffsuspension, die die Kernschicht (20) ausbildet, einzustellen und um das Festigkeitsprofil der Faserstoffbahn (10) auf ein im Wesentlichen gleichmäßiges Profil über die Breite der Faserstoffbahn, das heißt die Querrichtungsfestigkeitseigenschaften der Faserstoffbahn variieren nicht mehr als ± 2%, mittels der Lösung der Stoffsuspension, die die Oberflächenschicht (22) ausbildet, einzustellen.
  6. System nach Anspruch 5, wobei das Stoffauflaufsystem zwei Stoffaufläufe (12) aufweist, die jeweils eine Stoffsuspension zuführen, wobei in dem System die Lösungsanlage (32) in Verbindung mit beiden Stoffaufläufen (12) angepasst ist.
EP16167211.8A 2015-04-28 2016-04-27 Verfahren und system zum optimieren der eigenschaften einer mehrschichtigen faserstoffbahn in der faserbahnherstellung Active EP3088604B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20155312 2015-04-28

Publications (2)

Publication Number Publication Date
EP3088604A1 EP3088604A1 (de) 2016-11-02
EP3088604B1 true EP3088604B1 (de) 2020-03-25

Family

ID=55854674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16167211.8A Active EP3088604B1 (de) 2015-04-28 2016-04-27 Verfahren und system zum optimieren der eigenschaften einer mehrschichtigen faserstoffbahn in der faserbahnherstellung

Country Status (2)

Country Link
EP (1) EP3088604B1 (de)
CN (1) CN106087519B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2021246484A1 (en) * 2020-03-31 2022-11-24 Kimberly-Clark Worldwide, Inc. Method and apparatus for producing a zoned and/or layered substrate

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19514236C2 (de) * 1995-04-15 1997-10-02 Voith Sulzer Papiermasch Gmbh Stoffauflauf für eine Papiermaschine zum Erzeugen einer mehrschichtigen oder mehrlagigen Papierbahn
DE19634993A1 (de) * 1996-08-30 1998-03-05 Voith Sulzer Papiermasch Gmbh Verfahren und Vorrichtung zum Einstellen des Stoffdichte- und Faserorientierungsprofils in einem Stoffauflauf
FI100345B (fi) * 1997-01-24 1997-11-14 Valmet Corp Menetelmä ja laite paperikoneen perälaatikon säädössä
US6284100B1 (en) * 1997-01-24 2001-09-04 Valmet Corporation Method and apparatus for controlling a headbox in a paper machine
US6375799B1 (en) * 1999-01-28 2002-04-23 Voith Sulzer Papiertechnik Patent Gmbh Process and apparatus for producing a fibrous material web
FI113974B (fi) * 2003-06-05 2004-07-15 Metso Paper Inc Menetelmä monikerrosrainan valmistuksessa
FI116688B (fi) * 2004-02-13 2006-01-31 Metso Paper Inc Monikerrosrainan muodostusosa
CN101012629B (zh) * 2006-05-31 2011-04-27 华南理工大学 流浆箱的稀释水添加装置
FI121888B (fi) * 2008-08-12 2011-05-31 Metso Paper Inc Menetelmä kuiturainan ominaisuuksien optimoimiseksi
FI20085782L (fi) * 2008-08-22 2010-02-23 Metso Paper Inc Kartonkikone
DE102009014268B3 (de) * 2009-03-20 2010-04-08 Andritz Küsters Gmbh Anordnung an Papiermaschinen zur Einstellung eines Flächengewichts-Querprofils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN106087519B (zh) 2019-01-11
EP3088604A1 (de) 2016-11-02
CN106087519A (zh) 2016-11-09

Similar Documents

Publication Publication Date Title
EP0824157B1 (de) Stoffauflauf und Verfahren zur Verteilung einer Faserstoffsuspension im Stoffauflauf einer Papiermaschine
DE69913450T2 (de) Stoffauflauf zur Verteilung von Faserstoffsuspension und Zusatzstoffe
EP0635600A1 (de) Verfahren und Vorrichtung zur Reglung eines Stoffauflaufkasten
US20110259540A1 (en) Double-layer headbox for a machine for producing a double-layer fibrous web
US20110297342A1 (en) Process for the production of paper or paperboard
US5609726A (en) Headbox and method for producing multilayer and multi-ply paper webs
EP1323862B1 (de) Verfahren zur Regelung des Schrumpfungs-Querprofils in einer Papiermaschine
JP2001508839A (ja) 抄紙機におけるヘッドボックスの制御方法および装置
EP3088604B1 (de) Verfahren und system zum optimieren der eigenschaften einer mehrschichtigen faserstoffbahn in der faserbahnherstellung
CN112585317A (zh) 用于制造多层纤维料幅的方法和机器
KR20090052332A (ko) 시뮬레이션 방법, 섬유 배향 제어 방법, 및 섬유 배향 제어장치
WO1997018349A1 (de) Verfahren und einrichtung zur ermittlung der auswirkung der verstellung von stellgliedern
FI121888B (fi) Menetelmä kuiturainan ominaisuuksien optimoimiseksi
FI104002B (fi) Monikerrosrainaus yksinkertaista perusmassasysteemiä käyttäen
DE4423695C2 (de) Verfahren zur Herstellung einer Papier- oder Kartonbahn
EP2619366B1 (de) Verfahren zum regeln der formation einer faserstoffbahn
CN110273316B (zh) 纤维幅材机和形成多铺层幅材的方法
FI3535453T3 (fi) Laite ja menetelmä kuiturainan valmistamiseksi
FI20195568A1 (en) Method for forming a multilayer board web and forming portion for forming a multilayer board web
FI122113B (fi) Menetelmä ja perälaatikko kuiturainan poikkisuuntaisen ominaisuusprofiilin parantamiseksi
WO2009138414A2 (de) Vorrichtung zur online-steuerung und/oder - regelung eines faserorientierungsquerprofils
DE102022107202A1 (de) Mehrlagenfaserstoffbahn
EP3540119B1 (de) Faserbahnmaschine und verfahren zur herstellung einer mehrlagigen bahn
WO2010015575A1 (de) Verfahren zum beeinflussen von mindestens einer betriebs- und/oder qualitätseigenschaft bei der herstellung einer faserstoffbahn und blattbildungssystem zur durchführung des verfahrens
DE102007021447A1 (de) Verfahren zum Herstellen einer mehrschichtigen Faserstoffbahn und Mehrschichtenstoffauflauf

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

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

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20170426

RBV Designated contracting states (corrected)

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

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180801

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190415

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

INTC Intention to grant announced (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20191007

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1248690

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200415

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602016032391

Country of ref document: DE

REG Reference to a national code

Ref country code: FI

Ref legal event code: FGE

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

Ref country code: NO

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

Effective date: 20200625

Ref country code: RS

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

Effective date: 20200325

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

Ref country code: GR

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

Effective date: 20200626

Ref country code: HR

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

Effective date: 20200325

Ref country code: LV

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

Effective date: 20200325

Ref country code: SE

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

Effective date: 20200325

Ref country code: BG

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

Effective date: 20200625

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200325

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

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

Ref country code: NL

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

Effective date: 20200325

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

Ref country code: RO

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

Effective date: 20200325

Ref country code: PT

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

Effective date: 20200818

Ref country code: CZ

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

Effective date: 20200325

Ref country code: SM

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

Effective date: 20200325

Ref country code: EE

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

Effective date: 20200325

Ref country code: LT

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

Effective date: 20200325

Ref country code: IS

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

Effective date: 20200725

Ref country code: SK

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

Effective date: 20200325

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: MC

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

Effective date: 20200325

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602016032391

Country of ref document: DE

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

Ref country code: CH

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

Effective date: 20200430

Ref country code: ES

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

Effective date: 20200325

Ref country code: LU

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

Effective date: 20200427

Ref country code: LI

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

Effective date: 20200430

Ref country code: IT

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

Effective date: 20200325

Ref country code: DK

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

Effective date: 20200325

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200430

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

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

Ref country code: PL

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

Effective date: 20200325

Ref country code: BE

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

Effective date: 20200430

26N No opposition filed

Effective date: 20210112

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

Effective date: 20200625

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

Ref country code: IE

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

Effective date: 20200427

Ref country code: GB

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

Effective date: 20200625

Ref country code: FR

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

Effective date: 20200525

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

Ref country code: SI

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

Effective date: 20200325

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

Ref country code: TR

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

Effective date: 20200325

Ref country code: MT

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

Effective date: 20200325

Ref country code: CY

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

Effective date: 20200325

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

Ref country code: MK

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

Effective date: 20200325

Ref country code: AL

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

Effective date: 20200325

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

Ref country code: DE

Payment date: 20230420

Year of fee payment: 8

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

Ref country code: FI

Payment date: 20230419

Year of fee payment: 8

Ref country code: AT

Payment date: 20230420

Year of fee payment: 8