EP3739114B1 - Efficient production of a containerboard to be used as fluting - Google Patents

Efficient production of a containerboard to be used as fluting Download PDF

Info

Publication number
EP3739114B1
EP3739114B1 EP19174469.7A EP19174469A EP3739114B1 EP 3739114 B1 EP3739114 B1 EP 3739114B1 EP 19174469 A EP19174469 A EP 19174469A EP 3739114 B1 EP3739114 B1 EP 3739114B1
Authority
EP
European Patent Office
Prior art keywords
pulp
nssc
press
shoe press
containerboard
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
EP19174469.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3739114A1 (en
Inventor
Fredrik Nordström
Johan KULLANDER
Mikael KARPATHAKIS
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.)
Billerudkorsnas AB
Original Assignee
Billerudkorsnas AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=66554181&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3739114(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Billerudkorsnas AB filed Critical Billerudkorsnas AB
Priority to EP19174469.7A priority Critical patent/EP3739114B1/en
Priority to EP21160868.2A priority patent/EP3885490A1/en
Priority to ES19174469T priority patent/ES2882002T3/es
Priority to PL19174469T priority patent/PL3739114T3/pl
Priority to ES20174696T priority patent/ES2877201T3/es
Priority to CA3137795A priority patent/CA3137795A1/en
Priority to FIEP21160869.0T priority patent/FI3889345T3/fi
Priority to EP20725179.4A priority patent/EP3969658A1/en
Priority to US17/611,434 priority patent/US20220213649A1/en
Priority to PL21160869.0T priority patent/PL3889345T3/pl
Priority to CN202080035389.7A priority patent/CN113825876B/zh
Priority to EP21160869.0A priority patent/EP3889345B1/en
Priority to PL20174696T priority patent/PL3739115T3/pl
Priority to PCT/EP2020/063488 priority patent/WO2020229611A1/en
Priority to EP20174696.3A priority patent/EP3739115B1/en
Publication of EP3739114A1 publication Critical patent/EP3739114A1/en
Publication of EP3739114B1 publication Critical patent/EP3739114B1/en
Application granted granted Critical
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
    • 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
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a method of producing a containerboard to be used as fluting.
  • Neutral Sulfite Semi-Chemical (NSSC) pulping is an old process that it is well known in the field of paper pulping and in use in many pulp mills around the world.
  • One of the reasons for using NSSC pulping is the high yield.
  • the cooking liquor comprises sulfite, such as NaSO 3 or (NH 4 ) 2 SO 3 and a base, such as NaOH or Na 2 CO 3 .
  • “Neutral” means that the pH of the NSSC cooking liquor is generally between 6 and 10. Normally, the cooking time is between 0.5 and 3 hours and the cooking temperature is 160-185 °C.
  • the NSSC pulp comprises comparatively high amounts of residual lignin, such as 15-20 %, which make the NSSC pulp stiff.
  • the NSSC pulping is "semi-chemical" in the sense that it comprises mechanical treatment/grinding (after the chemical (cooking step)).
  • the NSSC pulp is for example used to produce containerboard that is subsequently corrugated to form the fluting of corrugated board.
  • mills using the NSSC pulping method are: BillerudKorsnäs' mills in Gruvön (PM 6) and Skärblacka (PM4), Sweden; Mondi Swiecie S.A.'s mill in Swiecie (PM 4), Poland; Mondi's (Powerflute's) mill in Koupio, Finland; Stora Enso Oyj's mill in Heinola, Finland (Heinola Fluting Mill); S.C. Celrom S.A.'s mill in Drobeta, Romania; Packaging Corp.
  • EP3026173 discloses a method of producing a containerboard (to be used as fluting) of increased SCT strength from pulp comprising NSSC pulp.
  • a web formed from the pulp comprising NSSC pulp is pressed in a shoe press, in which the line load is at least 1200 kN/m.
  • the SCT strength of NSSC-based containerboard to be used as fluting is increased when the NSSC pulp is subjected to more refining.
  • the rebuild of PM4 in Swiecie in 2015 involved a rebuild of the refining system to allow for more refining of the NSSC pulp in order to increase SCT strength.
  • Billerud AB now BillerudKorsnäs AB
  • Powerflute's NSSC mill improved its refining capacity in 2010.
  • the object of the present disclosure is to increase the efficiency of the method disclosed in EP3026173 while maintaining the SCT strength of the product at a high level.
  • the increased efficiency may be an increased energy efficiency (i.e. a reduced amount of energy consumed for producing one tonne of paper) and/or a higher productivity (i.e. that a higher amount of paper can be produced by the paper machine used for the method).
  • the above range for the Schopper-Riegler value of the pulp (15-19) reflects a very low degree of refining, which means low energy consumption in that stage of the papermaking process.
  • the inventor has also shown that a reduction of the refining energy results in that less energy (i.e. less steam) is needed for drying the paper web formed from the pulp in the drying section.
  • the inventors have found that the low degree of refining is not associated with an impaired SCT strength when the production is carried out according to the present disclosure.
  • the inventors have found that increasing the line load to 1400 kN/m or more generally does not increase dewatering of the web unless the right type of shoe press belt is selected. When the right belt is selected, however, such an increase of the line load effectively reduces the amount of steam needed to dry the paper web in the downstream drying section.
  • the present disclosure can thus make the production of NSSC-based containerboard more energy efficient, which is of particular interest since the yield of the NSSC pulping process is so high that the remaining biofuel (that is combusted in the recovery boiler) is insufficient for the papermaking process. Consequently, NSSC mills are dependent on external energy. If the NSSC mill is not integrated with an adjacent sulphate mill that produces a surplus of biofuel, it may be necessary to use fossil fuel as the external energy.
  • NSSC-based containerboard examples include the Heinola Fluting Mill and the Powerflute Mill.
  • speed of many papermaking processes is limited by the drying capacity of the drying section. This limitation is a particular problem when containerboard of higher grammages is produced.
  • the present disclosure allows for higher speed and thus higher productivity in the making of NSSC-based containerboard.
  • Figure 1 is a graph showing the shoe press line load and the resulting specific steam consumption (medium pressure steam at about 8 bar) in the drying section during the inventive trial described below.
  • the shoe press line load was 1300 kN/m during a first period ("1 st ”) and a third period ("3 rd "), During a second period (“2 nd “), the shoe press line load was 1700 kN/m.
  • the containerboard is intended for use as fluting (i.e. corrugated medium) in corrugated board.
  • the method is intended to be used on a full-scale paper machine, i.e. a machine adapted to produce at least 50,000 tons of containerboard per year, normally at least 100,000 tons of containerboard per year.
  • the grammage of the containerboard may be in the range of 120-240 g/m 2 , such as 120-200 g/m 2 or 140-230 g/m 2 , such as 150-230 g/m 2 . Grammage is measured according to ISO 536:2012.
  • the geometric SCT index of the containerboard is 38.0-42.0 Nm/g, such as 38.0-41.0 Nm/g.
  • the compressive strength in the machine direction (MD) and the cross direction (CD) of the containerboard is first measured using a short-span compressive tester (SCT) measured according to ISO 9895:2008.
  • SCT short-span compressive tester
  • N/m the compressive strength
  • the unit of the SCT index is thus Nm/g.
  • the compressive strength is considered to be more important in CD than in MD.
  • the SCT index in the CD of the containerboard may for example be above 28 Nm/g, such as at least 29 Nm/g.
  • An upper limit for the SCT index index may for example be 32 Nm/g.
  • the method comprises the step of:
  • the SR value is 16-19. In another embodiment, the SR value is 15-18.
  • the SR value referred to above is the SR value that the pulp has in the head box (i.e. the chamber from which the pulp is caused to flow onto the wire of the wire section).
  • the pulp of the present disclosure may be subjected to refining, such as LC refining, between the NSSC pulping process and the head box.
  • At least 80% by dry weight of the pulp is NSSC pulp. In one example, at least 85% or 88% by dry weight of the pulp is NSSC pulp.
  • the NSSC pulp may comprise hardwood NSSC pulp.
  • at least 70% by dry weight of the NSSC pulp is hardwood NSSC pulp, such as birch NSSC pulp.
  • at least 80% by dry weight of the NSSC pulp is hardwood NSSC pulp, such as birch NSSC pulp.
  • the yield of the NSSC pulp of the present disclosure may thus be 75%-85%, preferably 79%-85 %, such as 80-84%.
  • the pulp may comprise recycled fibers, reject pulp and/or clippings.
  • NSSC pulp is obtained from “NSSC pulping", which in turn is defined in the background section.
  • the NSSC pulp of the present disclosure may for example be sodium-based NSSC pulp, which means that the cooking liquor of the NSSC cook comprised Na 2 SO 3 .
  • the method further comprises the step of:
  • the head box consistency may for example be 0.50%-1.20%, such as 0.80%-1.20%, such as 0.90%-1.15%.
  • the higher consistencies are particularly relevant when a large proportion (e.g. at least 80%) of the NSSC pulp is derived from hardwood.
  • the head box consistency is 1.05%-1.20% and the grammage of the containerboard is 140-240 g/m 2 , such as 140-240 g/m 2 .
  • the method further comprises the step of:
  • the nip length in the shoe press may for example be 200-330 mm, such as 250-300 mm.
  • the shoe press is typically a double felted shoe press.
  • the shoe press comprises a shoe press belt having discontinuous grooves.
  • a shoe press belt is commercially available.
  • One example is the BlackBelt G DG marketed by Valmet.
  • the hardness of the elastomer in the shoe press belt may for example be 93-95 Shore A.
  • the line load in the shoe press is in the range of 1400-2000 kN/m, preferably 1500-2000 kN/m, such as 1600-2000 kN/m, such as 1600-1800 kN/m.
  • the web may be subjected to a press impulse of 105-280 kPa*s, such as 105-190 kPa*s, such as 105-135 kPa*s.
  • the highest press impulses are obtained when the line load is relatively high and the web speed is relatively low (because of a high grammage of the produced containerboard).
  • the press section may comprise another press arranged upstream the shoe press.
  • the other press is typically double felted and may for example be a jumbo press or a shoe press.
  • the line load of the other press may be 100-300 kN/m, such as 150-250 kN/m, in particular in case of a jumbo press.
  • the method further comprises the step of:
  • NSSC containerboard (intended for fluting) of various grammages was produced in the Gruvön mill, Sweden. Data from the production is presented in table 1.
  • the pulp was a mixture of about 90% NSSC pulp from birch and about 10% kraft pulp. The pulp was refined. The resulting SR numbers are presented in table 1.
  • the press section had two double felted nips; first a jumbo press and then a shoe press with a shoe press belt having blind drilled holes.
  • the line load of the jumbo press was 180 kN/m.
  • NSSC containerboard (intended for fluting) of the same grammages was produced in the Gruvön mill, Sweden. Data from the production is presented in table 2. Again, the pulp was a mixture of about 90% NSSC pulp from birch and about 10% kraft pulp and it was refined. The resulting SR numbers are presented in table 2.
  • the press section was the same as during the first period except that another shoe press belt was used. This new shoe press belt had discontinuous grooves. The characteristics of the grooves were:
  • NSSC containerboard (intended for fluting) having a grammage of 140 g/m 2 was produced in the Gruvön mill, Sweden.
  • the pulp was a mixture of about 90% NSSC pulp from birch and about 10% kraft pulp.
  • the pulp was refined.
  • the resulting SR numbers are presented in table 3 along with other data from the production.
  • NSSC containerboard (intended for fluting) having a grammage of 160 g/m 2 was produced in the Gruvön mill, Sweden.
  • the pulp was a mixture of about 90% NSSC pulp from birch and about 10% kraft pulp.
  • the pulp was refined.
  • the resulting SR numbers are presented in table 4 along with other data from the production.
  • the shoe press line load was then gradually increased and during a second period of about two hours, the shoe press line load was 1700 kN/m.
  • the shoe press line load was then gradually decreased and during a third period of about one hour, the shoe press line load was again 1300 kN/m. Data from the production is presented in table 4 (see also figure 1 ).
  • the average geometric SCT index of the containerboard produced during the second period was 38.3 Nm/g.
  • the SCT index in the cross direction was 29.4 Nm/g.
  • the SR numbers were measured online. Period Average SR number Head box slice lip (mm) Head box consistency (%) Line load shoe press (kN/m) Average SSC (ton/ton) First 17.2 18.1 1.10 1300 1.38 Second 17.3 18.0 1.11 1700 1.33 Third 17.3 18.1 1.10 1300 1.41

Landscapes

  • Paper (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
EP19174469.7A 2019-05-14 2019-05-14 Efficient production of a containerboard to be used as fluting Active EP3739114B1 (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
EP19174469.7A EP3739114B1 (en) 2019-05-14 2019-05-14 Efficient production of a containerboard to be used as fluting
EP21160868.2A EP3885490A1 (en) 2019-05-14 2019-05-14 Efficient production of a containerboard to be used as fluting
ES19174469T ES2882002T3 (es) 2019-05-14 2019-05-14 Producción eficiente de una cartón para embalaje para su uso como acanaladura
PL19174469T PL3739114T3 (pl) 2019-05-14 2019-05-14 Wydajne wytwarzanie tektury opakowaniowej przeznaczonej na fluting
US17/611,434 US20220213649A1 (en) 2019-05-14 2020-05-14 Efficient production of a containerboard to be used as fluting
EP21160869.0A EP3889345B1 (en) 2019-05-14 2020-05-14 Optimized production of a containerboard to be used as fluting
FIEP21160869.0T FI3889345T3 (fi) 2019-05-14 2020-05-14 Aallotuskartonkina käytettävän voimapahvin optimoitu tuotanto
EP20725179.4A EP3969658A1 (en) 2019-05-14 2020-05-14 Efficient production of a containerboard to be used as fluting
ES20174696T ES2877201T3 (es) 2019-05-14 2020-05-14 Producción optimizada de un cartón para embalaje para ser utilizado como medio corrugado
PL21160869.0T PL3889345T3 (pl) 2019-05-14 2020-05-14 Zoptymalizowane wytwarzanie tektury opakowaniowej do stosowania jako papier na warstwę pofalowaną
CN202080035389.7A CN113825876B (zh) 2019-05-14 2020-05-14 生产箱板纸的方法
CA3137795A CA3137795A1 (en) 2019-05-14 2020-05-14 Efficient production of a containerboard to be used as fluting
PL20174696T PL3739115T3 (pl) 2019-05-14 2020-05-14 Zoptymalizowane wytwarzanie tektury opakowaniowej do stosowania jako fluting
PCT/EP2020/063488 WO2020229611A1 (en) 2019-05-14 2020-05-14 Efficient production of a containerboard to be used as fluting
EP20174696.3A EP3739115B1 (en) 2019-05-14 2020-05-14 Optimized production of a containerboard to be used as fluting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19174469.7A EP3739114B1 (en) 2019-05-14 2019-05-14 Efficient production of a containerboard to be used as fluting

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP21160868.2A Division EP3885490A1 (en) 2019-05-14 2019-05-14 Efficient production of a containerboard to be used as fluting

Publications (2)

Publication Number Publication Date
EP3739114A1 EP3739114A1 (en) 2020-11-18
EP3739114B1 true EP3739114B1 (en) 2021-03-10

Family

ID=66554181

Family Applications (5)

Application Number Title Priority Date Filing Date
EP21160868.2A Pending EP3885490A1 (en) 2019-05-14 2019-05-14 Efficient production of a containerboard to be used as fluting
EP19174469.7A Active EP3739114B1 (en) 2019-05-14 2019-05-14 Efficient production of a containerboard to be used as fluting
EP21160869.0A Active EP3889345B1 (en) 2019-05-14 2020-05-14 Optimized production of a containerboard to be used as fluting
EP20725179.4A Pending EP3969658A1 (en) 2019-05-14 2020-05-14 Efficient production of a containerboard to be used as fluting
EP20174696.3A Active EP3739115B1 (en) 2019-05-14 2020-05-14 Optimized production of a containerboard to be used as fluting

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP21160868.2A Pending EP3885490A1 (en) 2019-05-14 2019-05-14 Efficient production of a containerboard to be used as fluting

Family Applications After (3)

Application Number Title Priority Date Filing Date
EP21160869.0A Active EP3889345B1 (en) 2019-05-14 2020-05-14 Optimized production of a containerboard to be used as fluting
EP20725179.4A Pending EP3969658A1 (en) 2019-05-14 2020-05-14 Efficient production of a containerboard to be used as fluting
EP20174696.3A Active EP3739115B1 (en) 2019-05-14 2020-05-14 Optimized production of a containerboard to be used as fluting

Country Status (8)

Country Link
US (1) US20220213649A1 (pl)
EP (5) EP3885490A1 (pl)
CN (1) CN113825876B (pl)
CA (1) CA3137795A1 (pl)
ES (2) ES2882002T3 (pl)
FI (1) FI3889345T3 (pl)
PL (3) PL3739114T3 (pl)
WO (1) WO2020229611A1 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE544926C2 (en) * 2021-05-17 2023-01-10 Stora Enso Oyj Multiply containerboard for use in corrugated board
EP4261346A1 (en) * 2022-04-14 2023-10-18 Billerud Aktiebolag (publ) Production of paper- or linerboard
BR102022011333A2 (pt) * 2022-06-09 2023-12-19 Klabin S.A. Papel-miolo semiquímico, embalagem e uso

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017163176A1 (en) 2016-03-23 2017-09-28 Stora Enso Oyj Board with improved compression strength

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8080137B2 (en) * 2003-11-18 2011-12-20 Albany International Corp. Shoe press belt having a grooved surface
ES2629203T5 (es) * 2014-11-26 2023-02-24 Billerudkorsnaes Ab Método de producción de un cartón corrugado para empaque a partir de pasta que comprende pasta NSSC
DE102015223664A1 (de) * 2015-11-30 2017-06-01 Voith Patent Gmbh Vorrichtung und verfahren zur herstellung einer faserstoffbahn
DE102015223662A1 (de) * 2015-11-30 2017-06-14 Voith Patent Gmbh Vorrichtung zur Herstellung einer Faserstoffbahn
FR3049194B1 (fr) 2016-03-23 2019-10-04 Sederma Utilisation d’un ingredient cosmetique comprenant un materiel vegetal issu de marrubium vulgare pour un traitement cosmetique
SE540115C2 (en) * 2016-09-21 2018-04-03 A paper or paperboard product comprising at least one ply containing high yield pulp and its production method
PL3385444T3 (pl) * 2017-04-06 2020-01-31 Billerudkorsnäs Ab Wytwarzanie papieru, który jest wysoce rozciągliwy w kierunku poprzecznym

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017163176A1 (en) 2016-03-23 2017-09-28 Stora Enso Oyj Board with improved compression strength

Also Published As

Publication number Publication date
PL3739115T3 (pl) 2021-10-25
EP3739115B1 (en) 2021-03-17
PL3889345T3 (pl) 2023-05-29
ES2882002T3 (es) 2021-11-30
CA3137795A1 (en) 2020-11-19
EP3969658A1 (en) 2022-03-23
EP3885490A1 (en) 2021-09-29
CN113825876B (zh) 2024-06-18
CN113825876A (zh) 2021-12-21
PL3739114T3 (pl) 2021-10-25
EP3889345A1 (en) 2021-10-06
FI3889345T3 (fi) 2023-05-04
WO2020229611A1 (en) 2020-11-19
ES2877201T3 (es) 2021-11-16
US20220213649A1 (en) 2022-07-07
EP3739115A1 (en) 2020-11-18
EP3739114A1 (en) 2020-11-18
EP3889345B1 (en) 2023-02-01

Similar Documents

Publication Publication Date Title
US20220213649A1 (en) Efficient production of a containerboard to be used as fluting
Bajpai et al. Basic overview of pulp and paper manufacturing process
EP1883731B1 (en) Modified kraft fibers
KR100662043B1 (ko) 제지용 대나무 펄프의 제조방법과 그 펄프 및 그 지류제조방법
US11814227B2 (en) High-strength fluting from NSSC pulp
US11795619B2 (en) Tailored hemicellulose in non-wood fibers for tissue products
Brännvall Overview of pulp and paper processes
WO2008003343A1 (en) Method of making an absorbent structure as a multi layer paper, especially a tissue paper
EP4036305B1 (en) Papermaking method
Aguilar‐Rivera Sustainable sugarcane bagasse cellulose for papermaking
RU2814482C2 (ru) Эффективное производство тарного картона для применения в качестве флютинга
Walker et al. Pulp and paper manufacture
CN117321264A (zh) 用于制造瓦楞纸板的瓦楞芯纸和/或挂面纸的方法
Macdonald Water usage in the South African pulp and paper industry
Mydin et al. Development and Evaluation of Pulp and Paper Properties Using Bambusa Vulgaris
Lewis Spatial and Structural Changes in West European Papermaking
Bublitz Pulping characteristics of Willamette Valley grass straws
KEAYS Deceased, formerly with Western Forest Products Laboratory, Vancouver

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

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200120

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

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: 20201222

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

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

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

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: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1369921

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210315

REG Reference to a national code

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: 602019003047

Country of ref document: DE

REG Reference to a national code

Ref country code: FI

Ref legal event code: FGE

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

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: 20210610

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: 20210310

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: 20210610

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: 20210611

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: 20210310

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1369921

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210310

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210310

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

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: 20210310

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: 20210310

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: 20210310

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

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: 20210310

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: 20210310

Ref country code: AT

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: 20210310

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: 20210310

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

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: 20210710

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: 20210310

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: 20210712

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: 20210310

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2882002

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20211130

REG Reference to a national code

Ref country code: DE

Ref legal event code: R026

Ref document number: 602019003047

Country of ref document: DE

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

REG Reference to a national code

Ref country code: FI

Ref legal event code: MDE

Opponent name: MONDI AG

26 Opposition filed

Opponent name: MONDI AG

Effective date: 20211210

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: 20210310

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: 20210310

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: 20210310

Ref country code: LU

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

Effective date: 20210514

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210531

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: 20210514

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

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: 20210710

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

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

Ref country code: BE

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

Effective date: 20210531

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: LI

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

Effective date: 20220531

Ref country code: CH

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

Effective date: 20220531

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: MONDI AG

Effective date: 20211210

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

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: 20210310

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230529

P02 Opt-out of the competence of the unified patent court (upc) changed

Effective date: 20230530

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

Ref country code: HU

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

Effective date: 20190514

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: 20210310

REG Reference to a national code

Ref country code: DE

Ref legal event code: R100

Ref document number: 602019003047

Country of ref document: DE

PLCK Communication despatched that opposition was rejected

Free format text: ORIGINAL CODE: EPIDOSNREJ1

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 20231010

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: 20210310

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

Ref country code: GB

Payment date: 20240517

Year of fee payment: 6

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

Ref country code: DE

Payment date: 20240520

Year of fee payment: 6

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

Ref country code: ES

Payment date: 20240611

Year of fee payment: 6

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

Ref country code: FR

Payment date: 20240517

Year of fee payment: 6

Ref country code: FI

Payment date: 20240521

Year of fee payment: 6

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

Ref country code: PL

Payment date: 20240422

Year of fee payment: 6

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

Ref country code: SE

Payment date: 20240516

Year of fee payment: 6

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

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: 20210310

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

Ref country code: IT

Payment date: 20240520

Year of fee payment: 6