EP4261346B1 - Herstellung von papier- oder deckenpapier - Google Patents

Herstellung von papier- oder deckenpapier Download PDF

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Publication number
EP4261346B1
EP4261346B1 EP22168616.5A EP22168616A EP4261346B1 EP 4261346 B1 EP4261346 B1 EP 4261346B1 EP 22168616 A EP22168616 A EP 22168616A EP 4261346 B1 EP4261346 B1 EP 4261346B1
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EP
European Patent Office
Prior art keywords
furnish
pulp
dry weight
middle layer
layer
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EP22168616.5A
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English (en)
French (fr)
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EP4261346A1 (de
Inventor
Fredrik Nordström
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Billerud AB
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Billerud AB
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Application filed by Billerud AB filed Critical Billerud AB
Priority to FIEP22168616.5T priority Critical patent/FI4261346T3/fi
Priority to PL22168616.5T priority patent/PL4261346T3/pl
Priority to EP22168616.5A priority patent/EP4261346B1/de
Priority to EP23716337.3A priority patent/EP4508270B1/de
Priority to PCT/EP2023/059830 priority patent/WO2023198916A1/en
Priority to US18/856,582 priority patent/US20250250745A1/en
Publication of EP4261346A1 publication Critical patent/EP4261346A1/de
Publication of EP4261346B1 publication Critical patent/EP4261346B1/de
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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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/38—Multi-ply at least one of the sheets having a fibrous composition differing from that of other sheets
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • D21H11/04—Kraft or sulfate pulp
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/08—Mechanical or thermomechanical pulp
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/10—Mixtures of chemical and mechanical pulp
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/14—Secondary fibres

Definitions

  • the present disclosure relates to the field of production of paper- and linerboard.
  • a machine for producing multi-layered paper- or linerboard has different sections.
  • furnishes are prepared from pulps and additives (added to improve properties such as retention, dewatering and strength).
  • a multi-layered web is then formed from the furnishes.
  • the multi-layered web is dewatered in the press section and dried in the drying section. Downstream the drying section, the multilayered web may be coated and/or calendered. When the multilayered web is both coated and calendered, calendering can be carried upstream or downstream the coating step(s) or even between coating steps.
  • the pulps that can be used in the paperboard machine include virgin pulps, recycled pulps (i.e. pulps prepared from recycled paper and/or paperboard) and broke pulps (pulps of fibres recycled from downstream portions of the same process). Further, virgin pulps are typically divided into chemical pulps and mechanical pulps. Sulfate (kraft) pulp and sulfite pulp are examples of chemical pulp. Groundwood pulp, thermomechanical pulp (TMP) and chemi-thermomechanical pulp (CTMP) are examples of mechanical pulp. All these pulps can be made from hardwood, softwood or mixtures thereof. Further, the pulps can be bleached or unbleached.
  • virgin pulps are typically divided into chemical pulps and mechanical pulps.
  • Sulfate (kraft) pulp and sulfite pulp are examples of chemical pulp.
  • Groundwood pulp, thermomechanical pulp (TMP) and chemi-thermomechanical pulp (CTMP) are examples of mechanical pulp. All these pulps can be made from hardwood, softwood or mixtures thereof. Further, the pulps can be
  • a furnish for a particular layer typically comprise a mixture of different pulps.
  • the properties of the final board product are not only a result of the pulp mixture of each furnish; they also depend on the degree of refining of the pulps, the types and amounts of additives and other operating conditions.
  • the process for making paperboard cannot be designed with only the final properties in mind; runnability in the paper machine and energy consumption must also be taken into consideration.
  • WO 2021/124040 A1 a light weight linerboard with a low CTMP content for corrugated board was produced, wherein the linerboard is having a high bending resistance and high compression strength.
  • a machine for producing a fibrous web comprising at least one, preferably two, double-felted shoe presses arranged one behind the other in the web running direction and at least one single-felted shoe press arranged behind the two double-felted shoe presses in the web running direction is disclosed.
  • CN 110 904 734 A a dark grain anticounterfeit cardboard produced from chemical pulp and hot-grinding pulp is disclosed.
  • the present invention aims to provide an efficient method of producing a paper- or linerboard of satisfactory properties.
  • the present invention provides a method of producing a paper- or linerboard having a grammage measured according to ISO 536:2019 of 250-310 g/m 2 and comprising a print layer, a middle layer and a back layer, wherein the middle layer is formed from a middle layer furnish comprising at least 40% by dry weight CTMP and at least 20% by dry weight broke pulp and the back layer is formed from a back layer furnish comprising an unbleached kraft pulp, said method comprising the step of subjecting a multi-layered web at a speed of at least 600 m/min to pressing in a press section comprising a first and a second double-felted shoe press nip arranged in series, wherein the total press impulse of the double-felted shoe press nips is at least 110 kPa*s, wherein CTMP and broke pulp together constitute at least 75% by dry weight of the middle layer furnish.
  • this press impulse is high, which increases the press dryness (i.e. the dryness of the multilayered web exiting the press section). As a result, less steam is consumed in the drying section.
  • the skilled person making paperboard is often reluctant to use high press impulses as they can densify the web to such an extent that inferior bending stiffness is obtained.
  • the selection of an unbleached pulp for the back layer furnish and the inclusion of CTMP in the middle layer furnish make the web of the method of the present disclosure relatively insensitive to high press impulses.
  • the press dryness is further increased by both shoe press nips being double-felted.
  • the present disclosure provides a method of producing a paper- or linerboard having a grammage measured according to ISO 536:2019 of 170-310 g/m 2 .
  • the paper- or linerboard comprises a print layer, a middle layer and a back layer. In one embodiment, the paper- or linerboard comprises more than one middle layer.
  • the middle layer is formed from a middle layer furnish comprising at least 25% by dry weight CTMP.
  • each middle layer furnish preferably comprise at least 25% by dry weight CTMP.
  • the CTMP of the middle layer(s) preferably has a Canadian Standard Freeness (CSF) measured according to ISO 5267-2:2001 of 525-625 ml, such as 550-600 ml.
  • CSF Canadian Standard Freeness
  • the CTMP may be subjected to refining. If the CSF is too low, dewatering is impaired and density increases. If the CSF is too high, strength properties may be insufficient.
  • the middle layer furnish comprises at least 40% by dry weight CTMP.
  • the middle layer comprises at least 20% by dry weight broke pulp, such as at least 30% by dry weight broke pulp.
  • the broke pulp of the middle layer furnish preferably has a Schopper-Riegler number (°SR) of less than 35 (such as 26-34), more preferably less than 33 (such as 27-32). To reach such a °SR, the broke pulp may be subjected to refining. In the present disclosure, °SR is measured according to ISO 5267-1:1999.
  • the CTMP and the broke pulp together constitute at least 75% by dry weight of the middle furnish.
  • the middle layer furnish may further comprises kraft pulp, such as softwood kraft pulp.
  • This kraft pulp may have a relatively low °SR, such as 18-25, preferably 18-23.
  • the head box consistency of the middle layer furnish may be 0.15% - 0.42%, such as 0.25% - 0.40%.
  • the back layer is formed from a back layer furnish comprising an unbleached kraft pulp.
  • the unbleached pulp of the back layer preferably has a °SR of 19-26, such as 20-25. To reach such a °SR, the unbleached pulp may be subjected to refining. If the °SR is too high, dewatering is impaired. If the °SR is too low, strength properties may be insufficient.
  • the unbleached pulp of the back layer is typically a softwood pulp.
  • the back layer furnish comprises at least 50% by dry weight of the unbleached pulp, such as at least 60% by dry weight of the unbleached pulp.
  • the back layer furnish may comprise broke pulp.
  • the broke pulp of the back layer furnish preferably has a °SR of less than 35 (such as 26-34), more preferably less than 33 (such as 27-32). To reach such a °SR, the broke pulp may be subjected to refining.
  • the unbleached pulp and broke pulp together constitute at least 80 % by dry weight of the back layer furnish, such as at least 90 % by dry weight of the back layer furnish.
  • the head box consistency of the back layer furnish may be 0.12% - 0.25%.
  • the print layer furnish preferably comprises a mixture of hardwood kraft pulp and softwood kraft pulp, such as a mixture of bleached hardwood kraft pulp and bleached softwood kraft pulp. However, the print layer may also be unbleached.
  • Each of the kraft pulps of print layer furnish preferably has a °SR of 21-29. To reach such a °SR, the kraft pulps are typically subjected to refining.
  • hardwood kraft pulp and softwood kraft pulp together constitute at least 80% by dry weight of the print layer furnish, such as at least 90% by dry weight of the print layer furnish.
  • the head box consistency of the print layer furnish may be 0.12% - 0.25%.
  • the above-mentioned furnishes form a multi-layered web in a forming section.
  • a top former may be arranged to aid the dewatering of the middle layer in the forming section.
  • the formation of the middle layer preferably comprises the use of a breast roll shaker.
  • the method of the present disclosure comprises the step of subjecting the multi-layered web to pressing in a press section at a speed of at least 600 m/min, such as at least 650 m/min, such as at least 700 m/min, such as at least 750 m/min.
  • the press section comprises a first and a second double-felted shoe press nip arranged in series.
  • the second double-felted shoe press nip is arranged downstream the first double-felted shoe press nip.
  • the line load of the second double-felted shoe press nip is higher than the line load of the first double-felted shoe press nip.
  • the total press impulse of the double-felted shoe press nips is at 110 kPa*s.
  • An upper limit may be 150 kPa*s or 200 kPa*s
  • the speed of the multi-layered web is typically lower, which means that the press impulse is at least 110 kPa*s.
  • the press section comprises a further nip arranged downstream the double-felted shoe press nips.
  • the further nip is preferably a non-felted nip or a single-felted nip, such as a non-felted hard nip or a single-felted shoe press nip.
  • its line load may be in the range of 25-100 kN/m, such as 30-75 kN/m, such as 30-60 kN/m.
  • the main purpose of such a hard nip is to smoothen the print side, which was in contact with a felt in the first and the second double-felted shoe press nip.
  • the felt is preferably contacting the back side.
  • the single-felted shoe press nip not only further dewaters the web, it also smoothens the print side, which - as mentioned above - was in contact with a felt in the first and the second double-felted shoe press nip.
  • the print layer of the paper- or linerboard may be coated with a composition comprising at least one pigment and at least one binder. Accordingly, the method of the present disclosure may further comprise a coating step.
  • the coating step may comprise a plurality of substeps, each applying a sublayer.
  • the print side of the paper- or linerboard of the present disclosure may have a PPS 1.0 roughness of below 2.0 ⁇ m, such as below 1.8 ⁇ m.
  • a lower limit for this PPS 1.0 roughness may be 0.8 ⁇ m.
  • PPS 1.0 roughness is measured according to ISO 8791-4:2013 (soft backing & 1000 kPa clamping pressure).
  • the method of the present disclosure comprises no calendering step, which typically saves bulk.
  • the density of the paper- or linerboard of the present disclosure may be below 810 kg/m 3 . If not coated with a pigment coating, the density may be below 800 kg/m3. In the present disclosure, density is measured according to ISO 534:2011.
  • a three-layer white-top linerboard was produced in a full-scale paperboard machine.
  • the layer design of the WTL was as follows: a print layer (58 g/m 2 ), a back layer (45 g/m 2 ), a middle layer (77 g/m 2 ) and a pigment coating (20 g/m 2 , applied onto the print layer).
  • NBHK bleached hardwood kraft pulp
  • NBSK bleached softwood kraft pulp
  • LC refining 50 and 120 kWh/tonne, respectively
  • rosin size 0.5 kg/tonne
  • alum 2 kg/tonne
  • strength agent cationic starch, 5 kg/tonne
  • retention starch 3 kg/tonne
  • retention polymer 75 g/tonne
  • silica 300 g/tonne
  • clay 55 kg/tonne
  • UBK unbleached softwood kraft pulp
  • broke pulp were mixed in a 75:25 dry weight ratio.
  • AKD 0.5 kg/tonne
  • alum 0.4 kg/tonne
  • strength agent cationic starch, 5 kg/tonne
  • retention starch 3 kg/tonne
  • retention polymer 75 g/tonne
  • silica 300 g/tonne
  • a middle layer furnish broke pulp, NBSK and CTMP were mixed in a 45:10:45 dry weight ratio. Before the mixing, the pulps were subjected to LC refining to obtain the following values: °SR 30 for the broke pulp; °SR 20 for the NBSK and CSF 580 ml for the CTMP.
  • AKD 0.5 g/tonne
  • alum 0.3 g/tonne
  • strength agent cationic starch, 4 kg/tonne
  • retention starch 3 kg/tonne
  • retention polymer 150 g/tonne
  • silica silica
  • the wire section In the wire section, 0.7 g/m 2 starch was sprayed to each of the print layer web and the back layer web for ply-bond strength. At the end of the wire section, the three individual webs were couched together to form a three-layered web. In the press section arranged downstream the wire section, the three-layered web was pressed in three nips; a first double-felted shoe press nip followed by a second double-felted shoe press nip and a hard nip. The line load of the first double-felted shoe press nip was 656 kN/m. The line load of the second double-felted shoe press nip was 828 kN/m.
  • the line load of the hard nip was 50 kN/m.
  • the web speed in the press section was 854 m/min, which means that the press impulse of the whole press section was 108 kPa*s and that the total press impulse of the double-felted shoe press nips was 104 kP*s.
  • the three-layered web was dried in a drying section (the steam consumption in this section was relatively low) and then coated in a coating section according to the following: in a first blade coater, 8.5 g/m 2 of a pigment coating composition was applied to the surface of the print layer to form a first coating layer; and in a second blade coater, 11.5 g/m 2 of a pigment coating composition was applied to the first coating layer to form a second coating layer.
  • the total (dry) coat weight on the print layer surface was 20 g/m 2 .
  • a very small amount ( ⁇ 0.3 g/m 2 ) of starch was applied to the surface of the back layer in the coating section.
  • the middle layer would have been a greater part of the whole board structure and the density would therefore have been lower. Further, the grammage would have been higher if the board was not pigment-coated.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
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Claims (15)

  1. Verfahren zur Herstellung von Pappe oder Deckenpapier mit einer Grammatur nach ISO 536:2019 von 250-310 g/m2 und aufweisend eine Druckschicht, eine Mittelschicht und eine Rückschicht, wobei die Mittelschicht aus einem Mittelschichtstoff gebildet wird, der mindestens 40 % des Trockengewichts CTMP und mindestens 20 % des Trockengewichts Ausschusszellstoff aufweist, und die Rückschicht aus einem Rückschichtstoff gebildet wird, der einen ungebleichten Kraftzellstoff aufweist, wobei das Verfahren einen Schritt aufweist, eine mehrschichtige Bahn mit einer Geschwindigkeit von mindestens 600 m/min in einem Pressabschnitt zu pressen, der einen ersten und einen zweiten in Reihe angeordneten Doppelfilz-Schuhpressspalt aufweist, wobei der Gesamtpressimpuls der Doppelfilz-Schuhpressspalte mindestens 110 kPa*s beträgt, wobei CTMP und Ausschusszellstoff zusammen mindestens 75 % des Trockengewichts des Mittelschichtstoffs ausmachen.
  2. Verfahren nach Anspruch 1, wobei die Geschwindigkeit mindestens 650 m/min, beispielsweise mindestens 700 m/min, beispielsweise mindestens 750 m/min, beträgt.
  3. Verfahren nach Anspruch 1 oder 2, wobei die Linienlast des zweiten Doppelfilz-Schuhpressspalts höher als die Linienlast des ersten Doppelfilz-Schuhpressspalts ist.
  4. Verfahren nach einem der vorhergehenden Ansprüche, wobei die Stoffauflaufkonsistenz des Mittelschichtstoffs 0,15 % - 0,42 %, beispielsweise 0,25 % - 0,40 %, beträgt.
  5. Verfahren nach einem der vorhergehenden Ansprüche, wobei die Stoffauflaufkonsistenz des Druckschichtstoffs 0,12 % - 0,25 % beträgt.
  6. Verfahren nach einem der vorhergehenden Ansprüche, wobei die Stoffauflaufkonsistenz des Rückschichtstoffs 0,12 % - 0,25 % beträgt.
  7. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Mittelschichtstoff zusätzlich mindestens 30 % Trockengewicht Ausschusszellstoff aufweist.
  8. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Mittelschichtstoff zusätzlich Kraftzellstoff aufweist.
  9. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Druckschichtstoff eine Mischung aus Hartholz-Kraftzellstoff und Weichholz-Kraftzellstoff aufweist.
  10. Verfahren nach Anspruch 9, wobei Hartholz-Kraftzellstoff und Weichholz-Kraftzellstoff zusammen mindestens 80 % Trockengewicht des Druckschichtstoffs, beispielsweise mindestens 90 % Trockengewicht des Druckschichtstoffs, ausmachen.
  11. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Rückschichtstoff zusätzlich Ausschusszellstoff aufweist.
  12. Verfahren nach Anspruch ii, wobei ungebleichter Kraftzellstoff und Bruchzellstoff zusammen mindestens 80 % des Trockengewichts des Rückschichtmaterials, beispielsweise mindestens 90 % des Trockengewichts des Rückschichtmaterials, ausmachen.
  13. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Bilden der Mittelschicht die Verwendung eines Brustwalzenschüttlers aufweist.
  14. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Pressabschnitt noch einen Walzenspalt aufweist, der stromabwärts der Doppelfilz-Schuhpressspalte angeordnet ist.
  15. Verfahren nach Anspruch 14, wobei der andere Walzenspalt ein harter Walzenspalt oder ein Einzelfilz-Schuhpressspalt ist.
EP22168616.5A 2022-04-14 2022-04-14 Herstellung von papier- oder deckenpapier Active EP4261346B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FIEP22168616.5T FI4261346T3 (fi) 2022-04-14 2022-04-14 Kartongin tai lainerikartongin valmistus
PL22168616.5T PL4261346T3 (pl) 2022-04-14 2022-04-14 Wytwarzanie tektury lub kartonu pokryciowego tektury falistej
EP22168616.5A EP4261346B1 (de) 2022-04-14 2022-04-14 Herstellung von papier- oder deckenpapier
PCT/EP2023/059830 WO2023198916A1 (en) 2022-04-14 2023-04-14 Production of paper- or linerboard
EP23716337.3A EP4508270B1 (de) 2022-04-14 2023-04-14 Herstellung von papier- oder deckenpapier
US18/856,582 US20250250745A1 (en) 2022-04-14 2023-04-14 Production of paper- or linerboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22168616.5A EP4261346B1 (de) 2022-04-14 2022-04-14 Herstellung von papier- oder deckenpapier

Publications (2)

Publication Number Publication Date
EP4261346A1 EP4261346A1 (de) 2023-10-18
EP4261346B1 true EP4261346B1 (de) 2024-11-27

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EP22168616.5A Active EP4261346B1 (de) 2022-04-14 2022-04-14 Herstellung von papier- oder deckenpapier
EP23716337.3A Active EP4508270B1 (de) 2022-04-14 2023-04-14 Herstellung von papier- oder deckenpapier

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EP23716337.3A Active EP4508270B1 (de) 2022-04-14 2023-04-14 Herstellung von papier- oder deckenpapier

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US (1) US20250250745A1 (de)
EP (2) EP4261346B1 (de)
FI (1) FI4261346T3 (de)
PL (1) PL4261346T3 (de)
WO (1) WO2023198916A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4134236A1 (de) * 2021-08-11 2023-02-15 Billerud Aktiebolag (publ) Asymmetrische pappe
EP4134235A1 (de) * 2021-08-11 2023-02-15 Billerud Aktiebolag (publ) Asymmetrische pappe
WO2025093394A1 (en) * 2023-10-30 2025-05-08 Billerud Aktiebolag (Publ) Multilayer paperboard
EP4566818A1 (de) * 2023-12-05 2025-06-11 Billerud Aktiebolag (publ) Flüssigkeitsverpackungsplatte
EP4575083A1 (de) * 2023-12-19 2025-06-25 Billerud Aktiebolag (publ) Verfahren zur herstellung einer mehrlagigen pappe
PL4575084T3 (pl) * 2023-12-19 2026-03-23 Billerud Aktiebolag (Publ) Sposób wytwarzania tektury wielowarstwowej
EP4589068A1 (de) * 2024-01-16 2025-07-23 Mondi AG Verfahren zur herstellung einer mehrlagigen papiereinlage und mehrlagige papiereinlage

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999002777A1 (en) 1997-07-07 1999-01-21 Stora Kopparbergs Bergslags Ab Cardboard having great rigidity and packing made thereof
US20080053634A1 (en) 2004-07-12 2008-03-06 Voith Patent Gmbh Method for the Application of an Application Medium and Method and Machine for Production of a Fiber Web
US20100024998A1 (en) 2006-12-18 2010-02-04 Akzo Nobel N.V. Method of producing a paper product
WO2011151234A1 (de) 2010-06-02 2011-12-08 Voith Patent Gmbh Verfahren zur herstellung einer gestrichenen, mehrlagigen faserstoffbahn
CN110904734A (zh) 2019-12-11 2020-03-24 亚太森博（山东）浆纸有限公司 一种暗纹防伪纸板的制备方法
EP3739115A1 (de) 2019-05-14 2020-11-18 BillerudKorsnäs AB Optimierte herstellung von wellpappe zur verwendung als riffelung
DE102019116602A1 (de) 2019-06-19 2020-12-24 Voith Patent Gmbh Maschine zur herstellung einer faserstoffbahn
US20210047097A1 (en) 2014-11-26 2021-02-18 Billerudkorsnas Ab High-strength fluting from nssc pulp
WO2021124040A1 (en) 2019-12-19 2021-06-24 Stora Enso Oyj A light weight linerboard for corrugated board
EP4105381A1 (de) 2021-06-18 2022-12-21 Billerud Aktiebolag (publ) Produkt aus pappe mit verbesserten druckeigenschaften

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106948208B (zh) * 2017-03-09 2018-09-14 华南理工大学 一种环保低定量灰底白板纸及其制备方法
SE543040C2 (en) * 2018-06-27 2020-09-29 Stora Enso Oyj A linerboard for corrugated board and a corrugated board comprising a corrugated medium and the linerboard

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999002777A1 (en) 1997-07-07 1999-01-21 Stora Kopparbergs Bergslags Ab Cardboard having great rigidity and packing made thereof
US20080053634A1 (en) 2004-07-12 2008-03-06 Voith Patent Gmbh Method for the Application of an Application Medium and Method and Machine for Production of a Fiber Web
US20100024998A1 (en) 2006-12-18 2010-02-04 Akzo Nobel N.V. Method of producing a paper product
WO2011151234A1 (de) 2010-06-02 2011-12-08 Voith Patent Gmbh Verfahren zur herstellung einer gestrichenen, mehrlagigen faserstoffbahn
US20210047097A1 (en) 2014-11-26 2021-02-18 Billerudkorsnas Ab High-strength fluting from nssc pulp
EP3739115A1 (de) 2019-05-14 2020-11-18 BillerudKorsnäs AB Optimierte herstellung von wellpappe zur verwendung als riffelung
DE102019116602A1 (de) 2019-06-19 2020-12-24 Voith Patent Gmbh Maschine zur herstellung einer faserstoffbahn
CN110904734A (zh) 2019-12-11 2020-03-24 亚太森博（山东）浆纸有限公司 一种暗纹防伪纸板的制备方法
WO2021124040A1 (en) 2019-12-19 2021-06-24 Stora Enso Oyj A light weight linerboard for corrugated board
EP4105381A1 (de) 2021-06-18 2022-12-21 Billerud Aktiebolag (publ) Produkt aus pappe mit verbesserten druckeigenschaften

Non-Patent Citations (34)

* Cited by examiner, † Cited by third party
Title
"Master’s thesis ", 1 January 2011, LAPPEENRANTA UNIVERSITY OF TECHNOLOGY , article MÄNTYLÄ JYRKI: "Enhancement of water removal in the press section ", pages: 1 - 105, XP093311976
"Paper and Board Grades, Book 18", 1 January 2000, FINNISH PAPER ENGINEERS' ASSOCIATION AND TAPPI, Helsinki, Finland, ISBN: 952-5216-18-7, article JOHAN GULLICHSEN; HANNU PAULAPURO: "Chapter 2: Paperboard Grades", pages: 56 - 72, XP009552915
"Papp och kartong", 1 January 1995, SKOGSINDUSTRINS UTBILDNING I MARKARYD (SUM), Sweden, ISBN: 978-91-7322-182-5, article GAVELIN GUNNAR: "Passage; Chapter 3: Arkformning", pages: 110 - 122, XP093312014
"Papp och Kartong", 1 January 1995, SUM AB, Markaryd, Sweden, ISBN: 91-7322-182-1, article GAVELIN, GUNNAR; BORG, OLOV F: "3.2 Planviramaskiner (English translation enclosed)", pages: 110 - 117, XP093168772
"Thesis", 24 November 2020, MID SWEDEN UNIVERSITY, Sweden, ISBN: 978-91-88947-76-5, article BJÖRK ELISABETH: "Production and application of fine fractions made of chemical pulp for enhanced paperboard strength", pages: 1 - 59, XP093311982
ANONYMOUS: "CKB Multilayer kraft back board ", CKB KRAFT BOARD – TECHNICAL SPECIFICATIONS, STORA ENSO, pages 1 - 2, XP093311915, Retrieved from the Internet <URL:https://web.archive.org/web/20181113141137/https://www.storaenso.com/-/media/Documents/Download-center/Documents/Product-specifications/Paperboard-materials/CKB-en.ashx>
ANONYMOUS: "Double-nip press with linear web run - OptiPress Linear", VALMET - BOARD AND PAPER - BOARD AND PAPER MACHINES - PRESSING - OPTIPRESS LINEAR, VALMET, pages 1 - 3, XP093311958, Retrieved from the Internet <URL:https://web.archive.org/web/20180220093702/http://www.valmet.com/board-and-paper/board-and-paper-machines/pressing/optipress-linear/>
ANONYMOUS: "EFTER MER AN 20 AR - nu byggs ytterligare en kartongmaskin i Sverige ", NORDISKA PROJEKT, vol. 2017, no. 2, 1 February 2017 (2017-02-01), pages 32 - 36, XP093312069
ANONYMOUS: "Karneoli™ Multilayer kraft back board ", KARNEOLI™ MULTILAYER KRAFT BACK BOARD - TECHNICAL SPECIFICATIONS, STORA ENSO, pages 1 - 2, XP093311918, Retrieved from the Internet <URL:https://web.archive.org/web/20211016203643/https://www.storaenso.com/-/media/documents/download-center/documents/product-specifications/paperboard-materials/ckb-karneoli-en1.pdf>
ANONYMOUS: "Stora Enso Beihai BM1 - world-class liquid packaging board machine and BCTMP line", VALMET - REFERENCES - BOARD AND PAPER REFERENCES, VALMET, pages 1 - 3, XP093311941, Retrieved from the Internet <URL:https://web.archive.org/web/20171117202738/http://www.valmet.com/about-us/references/board-and-paper-references/stora-enso-beihai-bm1---world-class-liquid-packaging-board-machine/>
ANONYMOUS: "Valmet Breast Roll Shaker for improved formation", VALMET - WHITE PAPER, VALMET, pages 1 - 8, XP093252348, Retrieved from the Internet <URL:https://www.valmet.com/globalassets/media/downloads/white-papers/other-services/valmet_breast_roll_shaker_whitepaper.pdf>
D24a - Wayback machine version of D9 showing availability online 27 February 2021 (as noted in website listed at top of first page which includes date of archive "20210227") (XP093312004)
D25a& b - English machine translation of D25 (XP093312014)
D26 - Declaration regarding availability of D18-D21
D27 - Beihai machine manuals transmittal list relating to D18-D21
D32 - Manual, Beihai BM1, "2 Technical data, Forming section", 2016-10-17
D33 - Manual, Beihai BM1, "2 Technical data, Press section", 2016-10-17
D34 - Manual, Beihai BM1, "3 Design and Operating Principle, Press Section", 2016-10-17
D35 - Manual, Beihai BM1, "2 Technical data, Reel", 2016-10-17
D40a - English translation of pages 32, 34 and 36 of D28 (XP093312069)
D6b - Evidence that D1 was publicly available from the Wayback machine dated 16 October 2021 (as noted in website listed at top of page which includes date of archive "20211016")
ERHAGE SOFIE: "Optimization of tear strength in a multi-ply paperboard Evaluation of the potential improvement in tear strength without a negative effect on other mechanical properties [Optimering av rivstyrka i flerskiktskartong Utvärdering av potentiella förbättringar i rivstyrka utan negativ påverkan på andra m", THESIS, KARLSTADS UNIVERSITY, pages 1 - 69, XP093312042, Retrieved from the Internet <URL:https://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-62623>
GROSSMANN U., SCHIEL, C.: "The Characteristics of the FLEXONIP Press in General and the Special Advantage of the Duo-FLEXONIP Arrangement", REPRINT FROM "DAS PAPIER", vol. 1989, no. 7, 1 July 1989 (1989-07-01), pages 340 - 352, XP093312035
HAKANSON CARL : "The Sym-Belt™ Press Update", WELCOME ABOARD! - THE 4TH VALMET TECHNOLOGY DAYS; CHARLOTTE, NORTH CAROLINA, USA; SEPTEMBER 28-29, 1995, VALMET CORPORATION, 1 September 1995 (1995-09-01) - 29 September 1995 (1995-09-29), pages 169 - 176, XP093311923
J. GULLICHSEN (EDITOR): "Papermaking science and technology : a series of 19 books covering the latest technology and future trends, Book 6: Chemical pulping", 1 January 1999, HELSINKI : FAPET OY , ISBN: 978-952-5216-06-6, article GULLICHSEN, J. & PAULAPURO, H.,: "Fiber line operations", pages: 18 - 243, XP008171368
JAN SUNDHOLM: "Papermaking science and technology : a series of 19 books covering the latest technology and future trends; Book 5: Mechanical pulping", 1 January 1999, FAPET OY , Helsinki, Finland , ISBN: 952-5216-05-5, article CARL-ANDERS LINDHOLM, JOSEPH A. KURDIN: "Chapter 8: Chemimechanical pulping", pages: 222 - 251, XP009562871
JOHAN VON PFALER, RUINE ANDERSSON: "Multi-ply manufacturing of linerboard", TAPPI JOURNAL, TECHNICAL ASSOCIATION OF THE PULP & PAPER INDUSTRY, ATLANTA US, vol. 68, no. 4, 1 April 1985 (1985-04-01), Atlanta US , pages 74 - 77, XP009562877, ISSN: 0734-1415
LI SARA: "The power of a shared journey ", VALMET - INSIGHT - ARTICLES - SERVICES, VALMET, pages 1 - 10, XP093312004, Retrieved from the Internet <URL:https://web.archive.org/web/20230604170537/https://www.valmet.com/insights/articles/services/the-power-of-a-shared-journey/>
NORGREN SVEN, PETTERSSON GUNILLA, HöGLUND HANS: "Strong paper from spruce CTMP - Part II: Effect of pressing at nip press temperatures above the lignin softening temperature", NORDIC PULP & PAPER RESEARCH JOURNAL, STOCKHOLM, SE, vol. 33, no. 1, 23 May 2018 (2018-05-23), SE , pages 142 - 149, XP055783275, ISSN: 0283-2631, DOI: 10.1515/npprj-2018-3009
PEDER J. KLEPPE: "Kraft Pulping", TAPPI, vol. 53, no. 1, 1 January 1970 (1970-01-01), pages 35 - 47, XP009562872, ISSN: 0039-8241
PETER MIRSBERGER: "Der Einsatz fortschrittlicher Pressenkonzepte heute und morgen", DEUTSCHE PAPIERWIRTSCHAFT, no. 2, February 1992 (1992-02-01), pages T86 - T93, XP009562870, ISSN: 0070-4296
SCHUWERK, W.; HENSSLER, J.: "NipcoFlex-Schuhpressen - die neue Produktsymbiose für Karton- und Verpackungspapiermaschinen", WOCHENBLATT FÜR PAPIERFABRIKATION, DEUTSCHER FACHVERLAG GMBH, no. 4, 1 January 1997 (1997-01-01), pages 159 - 166, XP009562868, ISSN: 0043-7131
THAUNG TOLFÖRS GUSTAV: "Investigating the process parameters that influence the z-strength of liquid paperboard using data mining and machine learning", THESIS, UPPSALA UNIVERSITY, DISCIPLINARY DOMAIN OF SCIENCE AND TECHNOLOGY, TECHNOLOGY, DEPARTMENT OF MATERIALS SCIENCE AND ENGINEERING, APPLIED MECHANICS, pages 1 - 60, XP093312047, Retrieved from the Internet <URL:https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447977>
U. GROSSMANN UND C. SCHIEL: "Die Merkmale der FLEXONIP- Presse im allgemeinen und der DUO-FLEXONIP-Anordnung im besonderen", IPW INTERNATIONAL PAPER WORLD., DPW VERLAGSGESELLSCHAFT MBH, HEUSENSTAMM., DE, vol. 43, no. 7, 1 January 1989 (1989-01-01), DE , pages 340 - 352, XP009562869, ISSN: 0031-1340

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