EP2504487B1 - Procédé de fabrication de pâte à papier à base de cellulose nano-fibrillée et utilisation de pâte à papier dans la fabrication de papier ou dans des composites à base de cellulose nano-fibrillée - Google Patents

Procédé de fabrication de pâte à papier à base de cellulose nano-fibrillée et utilisation de pâte à papier dans la fabrication de papier ou dans des composites à base de cellulose nano-fibrillée Download PDF

Info

Publication number
EP2504487B1
EP2504487B1 EP10832694.3A EP10832694A EP2504487B1 EP 2504487 B1 EP2504487 B1 EP 2504487B1 EP 10832694 A EP10832694 A EP 10832694A EP 2504487 B1 EP2504487 B1 EP 2504487B1
Authority
EP
European Patent Office
Prior art keywords
pulp
cellulose
optical brightening
brightening agent
refining
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
EP10832694.3A
Other languages
German (de)
English (en)
Other versions
EP2504487A4 (fr
EP2504487A1 (fr
Inventor
Markus Nuopponen
Taru PÄIVÄLÄINEN
Antti Laukkanen
Jouni Paltakari
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.)
UPM Kymmene Oy
Original Assignee
UPM Kymmene 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41395280&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2504487(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by UPM Kymmene Oy filed Critical UPM Kymmene Oy
Publication of EP2504487A1 publication Critical patent/EP2504487A1/fr
Publication of EP2504487A4 publication Critical patent/EP2504487A4/fr
Application granted granted Critical
Publication of EP2504487B1 publication Critical patent/EP2504487B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/005—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic compounds
    • 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
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/18—Highly hydrated, swollen or fibrillatable fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/42—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups anionic
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/32—Bleaching agents

Definitions

  • the invention relates to a method of manufacturing nanofibrillated cellulose pulp.
  • the invention further relates to use of the pulp in paper manufacturing or in nanofibrillated cellulose composites.
  • nanofibrillated cellulose consumes a great deal of energy due to several fibrillarion passages that are needed to achieve nano-sized material. Because the energy consumption of the manufactured pulp increases hugely when the produced pulp includes nanofibrillated cellulose, there may be an efficiency problem when the produced pulp consist at least partly of nanofibrillated cellulose. Sometimes another problem in the nanofibrillated cellulose pulp production is poor water removal due to several strong bonds between cellulose fibers and the water to be removed.
  • the new additive would preferably have features to reduce the inter-fiber bonding and, thus, increase a refining efficiency due to decreased energy consumption of the refining stage.
  • the additive would preferably have features to reduce fiber-water and fiber-fiber bonding that occurs during drying and concentrating.
  • the additive would preferably be some of those additives that are often added for another purpose on later process stages.
  • the present invention solves at least some of the above mentioned problems by providing a method for pulp manufacturing wherein the produced pulp consist at least partly of nanofibrillated cellulose.
  • the method comprises a step in which at least one type of optical brightening agent (OBA) is dosed before and/or during at least one pre-refining and/or fibrillation stage.
  • OSA optical brightening agent
  • the invention further discloses a use of the produced pulp in nanofibrillated cellulose composites or in paper or paperboard manufacturing including base paper manufacturing and finishing stages like, for example, the use in paper or paperboard coatings.
  • optical brightening agents can increase the production efficiency of the nanofibrillated cellulose pulp if the additives are dosed before or during a pre-refining stage and/or a fibrillation stage.
  • Optical brightening agents have been found to be able to create bonding with cellulose in such a way that the optical brightening agents can act as substituents in inter-fiber bonding and, thus, inhibiting hydrogen bonding of fibrils in cellulose.
  • the increased production efficiency is mainly due to decreased energy consumption of the fibrillation stage because of the substituent effect.
  • Optical brightening agents are also able to create bonding with water and, thus, to increase the efficiency of drying and concentrating processes.
  • optical brightening agents are able to enable redispersing of nanofibrillated containing cellulose. Due to the dispersive effect, an optical brightening agent can be used as a dispersing agent in nanofibrillated concentrating and/or redispersing process and, therefore, help the process. In addition, due to the dispersive effect, the quality of the nanofibrillated cellulose pulp can be increased.
  • At least one kind of optical brightening agent is added before a pulp pre-refining stage. According to another embodiment, at least one kind of optical brightening agent is added before a pulp fibrillation stage. According to another embodiment, at least one kind of optical brightening agent is dosed into the pulp at the pre-refining stage. According to another embodiment, at least one kind of optical brightening agent is dosed into the pulp at the fibrillation stage.
  • the amount of the nanofibrillated cellulose in the produced pulp is more than 30 w-%, preferably more than 40 w-%, 50 w-%, 60 w-% or 70 w-%, and can be even up to 100 w-% measured from the dried pulp.
  • the nanofibrillated cellulose pulp that can be produced according to the invention and, thus, contains one or more optical brightening agents, may be used in various end product applications.
  • the cellulose pulp may be used, for example, in nanofibrillated cellulose composites, and/or in paper manufacturing, for example, in a base paper and/or in a finishing stage of produced paper.
  • the finishing stages of produced paper includes, for example, coating stages.
  • cellulose raw material refers to any cellulose raw material source that can be used in a production of cellulose pulp, refined pulp, or microfibrillar cellulose.
  • the cellulose raw material can be based on any plant material that contains cellulose, for example wood material.
  • the wood material can be from softwood trees, such as spruce, pine, fir, larch, douglas-fir or hemlock, or from hardwood trees, such as birch, aspen, poplar, alder, eucalyptus or acacia, or from a mixture of softwoods and hardwoods.
  • Non-wood material can be from agricultural residues, grasses or other plant substances such as straw, leaves, bark, seeds, hulls, flowers, vegetables or fruits from cotton, corn, wheat, oat, rye, barley, rice, flax, hemp, manila hemp, sisal hemp, jute, ramie, kenaf, bagasse, bamboo or reed.
  • agricultural residues, grasses or other plant substances such as straw, leaves, bark, seeds, hulls, flowers, vegetables or fruits from cotton, corn, wheat, oat, rye, barley, rice, flax, hemp, manila hemp, sisal hemp, jute, ramie, kenaf, bagasse, bamboo or reed.
  • cellulose pulp refers in this application to cellulose fibers, which are isolated from any cellulose raw material using chemical, mechanical, thermomechanical, or chemithermo - mechanical pulping process(es). Typically the diameter of the fibers varies between 15-25 ⁇ m and the length exceeds 500 ⁇ m, but the present invention is not intended to be limited to these parameters.
  • paper manufacturing refers to manufacturing process of any paper-like material, for example, paperboards, papers and/or paper composites.
  • At least part of the lignin that has been included in cellulose raw material is advantageously removed from the cellulose raw material when it is processed into cellulose pulp to be used in the nanofibrillated cellulose production.
  • chemical pulp may be used more preferably for nanofibrillated cellulose production than mechanical pulp.
  • the yield of the process wherein cellulose raw material is processed into cellulose pulp to be used in the nanofibrillated pulp production has been at least 50 %, at least 60 %, at least 70 % or at least 80 %.
  • the cellulose pulp used in the nanofibrillated cellulose production may be preferably unbleached or bleached chemithermo or chemical pulp, more preferably unbleached or bleached chemical pulp, and the most preferably unbleached chemical pulp, because the method of the invention may be the most advantageous compared to other processes when the used cellulose pulp is chemically produced unbleached pulp.
  • refined pulp refers to refined cellulose pulp.
  • the refining of cellulose pulp is carried out with suitable equipment such as a refiner, grinder, homogenizer, colloider, friction grinder, fluidizer such as microfluidizer, macrofluidizer or fluidizer-type homogenizer or ultrasound sonicator.
  • suitable equipment such as a refiner, grinder, homogenizer, colloider, friction grinder, fluidizer such as microfluidizer, macrofluidizer or fluidizer-type homogenizer or ultrasound sonicator.
  • suitable equipment such as a refiner, grinder, homogenizer, colloider, friction grinder, fluidizer such as microfluidizer, macrofluidizer or fluidizer-type homogenizer or ultrasound sonicator.
  • fluidizer such as microfluidizer, macrofluidizer or fluidizer-type homogenizer or ultrasound sonicator.
  • all cellulose fibers have not been fully fibrillated; a large fraction of cellulose fibers with unchanged dimensions are still present in addition to refined cellulose material.
  • nanofibrillated cellulose refers to a collection of isolated cellulose microfibrils or microfibril bundles derived from cellulose raw material.
  • Microfibrils have typically high aspect ratio: the length might exceed one micrometer while the number-average diameter is typically below 200 nm.
  • the diameter of microfibril bundles can also be larger but generally less than 1 ⁇ m.
  • the smallest microfibrils are similar to the so called elementary fibrils, which are typically 2-12 nm in diameter.
  • the dimensions of the fibrils or fibril bundles are dependent on the raw material and disintegration method.
  • the nanofibrillated cellulose may also contain some hemicelluloses; the amount may be dependent on the plant source.
  • Nanofibrillated cellulose can also be any chemically or physically modified derivate of cellulose microfibrils or microfibril bundles.
  • the chemical modification could be based for example on carboxymethylation, oxidation, esterification, or etherification reaction of cellulose molecules. Modification could also be realized by physical adsorption of anionic, cationic, or non-ionic substances or any combination of these on cellulose surface.
  • the described modification can be carried out before, after, or during the production of nanofibrillated cellulose.
  • Nanofibrillated cellulose described in this application is not the same material as the so called cellulose whiskers, which are also known as: cellulose nanowhiskers, cellulose nanocrystals, cellulose nanorods, rod-like cellulose microcrystals or cellulose nanowires. In some cases, similar terminology is used for both materials, for example by Kuthcarlapati et al.
  • cellulose nanofiber amorphous segment along the fibrillar structure as microfibrillar cellulose, which leads to more rigid structure.
  • Cellulose whiskers are also shorter than microfibrillar cellulose; typically the length is less than one micrometer.
  • Nanofibrillated cellulose and normal cellulose are usually produced using different kind of refiners, because the refiners that are used conventionally in the pulp refiner production may not, at least efficiently, be used in nanofibrillated cellulose production. However, the refiners used in the conventional pulp production may be used as pre-refiners in nanofibrillated cellulose production.
  • the term “fibrillation stage” means the stage that causes more fibrillar cellulose
  • the term “pre-refiner stage” means the stage that may advantageously be used for pre-refining before a fibrillation stage in nanofibrillated cellulose production.
  • Nanofibrillated cellulose pulp differs hugely from conventional cellulose pulp due to many nano-sized particles of the nanofibrillated cellulose pulp and, thus, nanofibrillated cellulose cannot be though as a same material as conventional cellulose pulp.
  • Nanofibrillated cellulose is, for example, gel-like material even in low consistency, and its water removal rate is usually slow.
  • Paper sheets that contain a lot of nanofibrillated cellulose have special properties comparing to the sheets made from normal cellulose pulp, for example, they have usually high strength properties, their porosity is very low, and the sheets are usually (at least partly) transparent.
  • FIGS. 1 a-1 d The differences between cellulose pulp, refined cellulose pulp and nanofibrillated cellulose pulp are illustrated in figures 1 a-1 d in optical microscopy pictures. Magnification is the same in the figures 1a - 1 c.
  • Figure 1 a shows an optical microscopy picture of typical cellulose pulp.
  • Figure 1 b shows an microscopy picture of typical refined cellulose pulp.
  • Figures 1 c and 1 d show microscopy pictures of typical nanofibrillated cellulose pulp.
  • the large cellulose fibers shown in figures 1 a and 1 b are not anymore clearly visible.
  • Figure 1 d shows the same situation as figure 1 c but with higher magnification wherein individual microfibrils and microfibril bundles with diameter less than 100 nm can be detected.
  • the present invention provides a method for manufacturing nanofibrillated cellulose pulp by pre-refining and/or fibrillating the pulp with a presence of at least one kind of optical brightening agent.
  • the present invention provides the use of the produced pulp in paper manufacturing or in nanofibrillated cellulose composites.
  • optical brightening agents are dye-like compounds which absorb short-wave light in the ultraviolet and violet region of the electromagnetic spectrum not visible to the human eye and re-emit the light in the longer-wave blue region.
  • optical brightening agents make the material, for example paper, to look less yellow to the human eyes and, thus, human eyes interpret the blue light as a higher degree of whiteness.
  • the optical brightening agents are used to achieve better optical properties of the produced paper, for example, for a whitening effect of the produced paper.
  • Optical brightening agent types that are typically used in the pulp and paper industry are, for example, di-, tetra-, and hexasulphonated stilbene compounds.
  • the amount of sulphonated groups has an effect on the chemical properties of the optical brightening agent and, thus, the type of the used OBA may have an effect on the method according to an example embodiment of the invention.
  • the more the optical brightening agent has sulphonated groups the bigger may be the effect of the used optical brightening agent on the method accordant with the invention.
  • Some other most commercially available optical brightening agents in pulp and paper industries are based on coumarin and pyrazoline chemistries. Those mentioned optical brightening agent types are only some examples and also other types of optical brightening agents known in prior art can be used in this invention.
  • those chemical types mentioned in the application i.e stilbene, coumarin and pyrazoline, are preferred to use in the practice of this invention.
  • the anionic stilbene compounds may be the most preferably used in the invention.
  • optical brightening agents are quite expensive additives, thus, solutions provided in this invention are intended to be the most efficient if optical brightening agents are used in nanofibrillated pulp production wherein the optical brightening agent is otherwise added in a later stage to the pulp or to the end product.
  • optical brightening agents are typically added at the wet end of the papermaking process, which include, for example, the fan pulp or the machine chest.
  • optical brightening agent in accordance with some example embodiments of the invention does not necessarily increase additive costs but, quite the contrary, the retention of the optical brightening agent to the nanofibrillated pulp may be improved if the optical brightening agent is added before or during pre-refining stage or before or during a fibrillation step and, therefore, the overall costs of the used optical brightening agent may be decreased.
  • the total amount of the needed optical brightening agent dosage according to an example embodiment of the invention can be smaller if the optical brightening agent is added accordant with some example embodiments of the invention due to several fiber - optical brightening agent bondings that may be formed during nanofibrillated cellulose pre-refining and/or fibrillation stages.
  • the efficiency of the nanofibrillated cellulose production can further be increased when the optical brightening agent is added to the produced pulp before or during the refining stage, not only because of the decreased energy consumption but also because of less additive costs.
  • the optical brightening agent dosage to the nanofibrillated cellulose production according to some example embodiments of this invention may increase an ability of the nanofibrillated cellulose to carry the optical brightening agent and, therefore, a need for other optical brightening agent carriers e.g. Polyvinyl Alcohol (PVOH) may decrease.
  • PVOH Polyvinyl Alcohol
  • the method comprises a step wherein at least one type of the optical brightening agent (OBA) is dosed as a refining additive to the pulp which contains cellulose.
  • OSA optical brightening agent
  • the dosage is preferably done before a pre-refining and/or fibrillation stage.
  • one type of the optical brightening agent can be added into the pulp at the pre-refining or the fibrillation stage.
  • the pulp is fibrillated in at least one fibrillation stage after the additive addition, no matter in which stage the additive is added to the process.
  • the anionic optical brightening agent is capable of inhibiting hydrogen bonding between the cellulose fibrils in cellulose and can therefore be used to create a dispersive effect, which dispersive effect can increase the quality of the produced nanofibrillated cellulose. Due to the dispersive effect, optical brightening agent can be used as a dispersing agent in the nanofibrillated concentrating/redispersing process and, therefore, may help the process.
  • Nanofibrillated cellulose that contains optical brightening agent may improve not only the refining efficiency and the quality of the produced pulp but also both the strength and the optical properties of the end product to be produced from the pulp manufactured according to an example embodiment of the invention.
  • the improvements in strength properties are mainly due to the features of nanofibrillated cellulose and the improvements in optical properties are mainly due to the features of the optical brightening agent.
  • the novel invention can provide at least some of the following advantages:
  • the amount of nanofibrillated cellulose in the pulp manufactured according to the invention may be 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95 or 100 w- %, including any and all ranges and subranges therein.
  • the pulp manufacturing process according to invention has at least one fibrillation stage, possibly at least 2, 3 or 4 fibrillation stages. According to the invention at least one type of the optical brightening agent is added
  • the pulp is fibrillated after at least one additive dosage in at least one fibrillation stage in order to form some nanofibrillated cellulose material.
  • the addition of the optical brightening agent before or during the refining decreases the cellulose-cellulose bonding through hydroxyl groups by forming hydrogen bonds with the cellulose fibrils.
  • the addition of the optical brightening agent creates a dispersive effect to the pulp suspension through the repulsive forces between the anionic groups.
  • a bleached birch pulp made with conventional chemical pulping process was used as raw cellulose pulp.
  • optical brightening agents Two different kinds of optical brightening agents were used as the refining additive: disulphonic type of the optical brightening agent and hexasulphonic type of the optical brightening agent. In addition, reference samples without addition of the optical brightening agent were performed.
  • the pre-refining stage was performed with Voith refiner. Addition of the used optical brightening agent was always 2 w-%. The whole amount was dosed to the pulp before the pre-refiner stage, after which the samples were refined at energy of 200 kWh/t. The pre-refinings were performed in the consistency of 4%.
  • the obtained pulps were diluted to 1.6% for fluidizer and to 2% for Masuko.
  • the optical brightening agents were dosed to the pre-refining process in order to improve their bonding to fiber surface.
  • the part of the samples was fluidized with the M-700 Microfluidics Processor. Those samples were dispersed with a mixer in 1.6% consistency during 30 minutes. After dispersing, the samples were passed three times through fluidizer so that in the first pass there was only an APM chamber with diameter at 500 ⁇ m. In the second pass, the fiber suspension was passed through two sequential chambers with diameters at 500 ⁇ m and 200 ⁇ m. The third pass was carried out so that the fiber suspension passed through sequential 500 ⁇ m and 100 ⁇ m diameter chambers. The condenser of the fluidizer was switched off during all these trials, as it was found to improve fibrillation in the first part of experiments.
  • the grinded samples were dispersed in 2% consistency with a mixer during 15 minutes before the treatment with Masuko.
  • the dispersed samples were passed four times through Masuko in such a way that in the first pass the gap between the grinding stones was looser than with the following three passes.
  • the grinder was washed after the first and third pass.
  • the gel-like fiber suspensions obtained from Masuko and from fluidizer were characterized by measuring viscosity (Brookfield) and turbidity of the samples and by observing optical microscope and SEM images of the samples. In addition, with centrifugation measurements the dry matter content was measured from both the liquid and the solid phase in order to determine the amount of nano-sized material in the sample.
  • Paper sheets were made in a laboratory from the produced pulps.
  • Refining result can be estimated by measuring the viscosity level of the nanofibrillated cellulose sample, because the viscosity level of the pulp material goes along with the portion of nanofibrillated cellulose in the pulp.
  • more refined, and thus, more fibrillated nanofibrillated cellulose is more gel-like material than less nanofibrillated cellulose. Therefore, more gel-like material means more nanofibrillated cellulose in the sample and this bigger part of nanofibrillate cellulose can be seen in higher viscosity level in the sample.
  • Samples with optical brightening agent - dosage were clearly more viscous than the reference samples. The amount of unfibrillated fibers can be estimated from optical microscopy pictures.
  • FIGs 2a-2c wherein viscosity results with some optical microscopy pictures of Masuko grinded samples are shown.
  • the figure 2a presents the viscosity results of the reference sample 21, the sample with disulphonic optical brightening agent dosage 22, and the sample with hexasulphonic optical brightening agent dosage 23.
  • Figure 2b shows an optical microscopy picture of the reference sample 21
  • figure 2c shows an optical microscopy picture of the sample 23 with hexasulphonic optical brightening agent dosage.
  • Figures 3a and 3b show an optical microscopy images of fluidisator samples, wherein the reference sample (shown in figure 3a ) and the sample 32 with hexasulphonic optical brightening agent (shown in figure 3b ) are presented. The sample presented in figure 3b with the dosage of the optical brightening agent is clearly better fibrillated than the reference sample shown in figure 3a .
  • Figures 4a and 4b show the same situation with SEM pictures (magnification: 10 000 x) in which the reference sample (in figure 4a ) and the sample with hexasulphonated optical brightening agent addition (in figure 4b ) are presented.
  • the samples with hexasulphonated optical brightening agent looks clearly better compared to the reference sample, as many smaller fibrils can be seen in the image.
  • FIG. 5 shows turbidity and centrifugation results of the fluidized samples.
  • the reference sample 51, the sample 52 with disulphonic type of the optical brightening agent dosage, and the sample 53 with addition of hexasulphonic type of the optical brightening agent are presented.
  • the samples with OBA dosages were the most nano-sized.
  • centrifugation results indicated that amount of nano-sized material increases along with OBA addition.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Claims (12)

  1. Procédé pour fabriquer de la pâte, dans lequel la pâte fabriquée contient au moins 30 % en poids de matière cellulosique sous la forme de nanofibrilles, que l'on mesure à partir de la pâte séchée, le procédé comprenant le fait de :
    - introduire une matière de départ dans un système, ladite matière de départ englobant de la cellulose ;
    - ajouter de manière dosée au système au moins un type d'azureur optique à titre d'additif de raffinage ; et
    raffiner la matière de départ en présence de l'azureur optique introduit de manière dosée, dans au moins une étape de préraffinage ou une étape de fibrillation dans le but d'obtenir de la matière cellulosique fibrillaire.
  2. Procédé selon la revendication 1, caractérisé en ce qu'on procède au raffinage en présence de l'azureur optique introduit de manière dosée dans au moins une étape de fibrillation dans le but d'obtenir de la matière cellulosique fibrillaire.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la pâte à l'état fabriqué contient au moins 40 % en poids, au moins 50 % en poids, au moins 60 % en poids ou au moins 70 % en poids de matière cellulosique sous la forme de nanofibrilles, mesurés à partir de la pâte séchée.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'au moins une partie de la matière de départ est choisie parmi le groupe indiqué ci-après :
    - de la pâte chimique non blanchie ;
    - de la pâte chimique blanchie ;
    - de la pâte chimico-thermomécanique non blanchie ; et
    - de la pâte chimico-thermomécanique blanchie.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'au moins un type d'azureur optique est ajouté de manière dosée avant l'étape de préraffinage.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'au moins un type d'azureur optique est ajouté au cours de l'étape de préraffinage.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'au moins un type d'azureur optique est introduit de manière dosée avant l'étape de fibrillation.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'au moins un type d'azureur optique est introduit de manière dosée au cours de l'étape de fibrillation.
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que ledit au moins un type d'azureur optique introduit de manière dosée est choisi parmi le groupe comprenant des composés de stilbène, de coumarine et de pyrazoline.
  10. Utilisation d'une pâte dans des composites de cellulose nanofibrillée, dans laquelle au moins une partie de la pâte est fabriquée conformément au procédé selon l'une quelconque des revendications précédentes.
  11. Utilisation d'une pâte dans la fabrication du papier ou du carton englobant :
    - une production de papier de base ; et
    - des étapes de finition du papier ou du carton ;
    dans laquelle au moins une partie de la pâte est fabriquée conformément au procédé selon l'une quelconque des revendications 1 à 9.
  12. Utilisation selon la revendication 11, dans laquelle lesdites étapes de finition comprennent des enductions pour le papier ou pour le carton.
EP10832694.3A 2009-11-24 2010-11-05 Procédé de fabrication de pâte à papier à base de cellulose nano-fibrillée et utilisation de pâte à papier dans la fabrication de papier ou dans des composites à base de cellulose nano-fibrillée Active EP2504487B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20096233A FI123289B (fi) 2009-11-24 2009-11-24 Menetelmä nanofibrilloidun selluloosamassan valmistamiseksi ja massan käyttö paperinvalmistuksessa tai nanofibrilloiduissa selluloosakomposiiteissa
PCT/FI2010/050897 WO2011064441A1 (fr) 2009-11-24 2010-11-05 Procédé de fabrication de pâte à papier à base de cellulose nano-fibrillée et utilisation de pâte à papier dans la fabrication de papier ou dans des composites à base de cellulose nano-fibrillée

Publications (3)

Publication Number Publication Date
EP2504487A1 EP2504487A1 (fr) 2012-10-03
EP2504487A4 EP2504487A4 (fr) 2014-01-22
EP2504487B1 true EP2504487B1 (fr) 2016-07-20

Family

ID=41395280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10832694.3A Active EP2504487B1 (fr) 2009-11-24 2010-11-05 Procédé de fabrication de pâte à papier à base de cellulose nano-fibrillée et utilisation de pâte à papier dans la fabrication de papier ou dans des composites à base de cellulose nano-fibrillée

Country Status (5)

Country Link
US (1) US20130000855A1 (fr)
EP (1) EP2504487B1 (fr)
CN (1) CN102686799A (fr)
FI (1) FI123289B (fr)
WO (1) WO2011064441A1 (fr)

Families Citing this family (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2710273A1 (fr) 2007-12-20 2009-07-09 University Of Tennessee Research Foundation Adhesifs pour bois contenant des additifs renforces pour produits techniques structuraux
FI124724B (fi) * 2009-02-13 2014-12-31 Upm Kymmene Oyj Menetelmä muokatun selluloosan valmistamiseksi
PL3617400T3 (pl) 2009-03-30 2023-01-02 Fiberlean Technologies Limited Zastosowanie zawiesin nanofibrylarnej celulozy
SI2236545T1 (sl) 2009-03-30 2014-12-31 Omya International Ag Postopek za proizvodnjo gelov iz nanofibrilirane celuloze
GB0908401D0 (en) 2009-05-15 2009-06-24 Imerys Minerals Ltd Paper filler composition
ES2464733T3 (es) 2010-04-27 2014-06-03 Omya International Ag Proceso para la producción de materiales compuestos a base de gel
PT2386682E (pt) 2010-04-27 2014-05-27 Omya Int Ag Processo para fabricar materiais estruturados, usando géis de celulose nanofibrilares
GB201019288D0 (en) 2010-11-15 2010-12-29 Imerys Minerals Ltd Compositions
CA2824191C (fr) 2011-01-21 2015-12-08 Fpinnovations Nanofilaments de cellulose a rapport d'allongement eleve et leur procede de fabrication
US9388529B2 (en) 2011-02-24 2016-07-12 Innventia Ab Single-step method for production of nano pulp by acceleration and disintegration of raw material
US8835141B2 (en) * 2011-06-09 2014-09-16 The United States Of America As Represented By The Secretary Of Agriculture Methods for integrated conversion of lignocellulosic material to sugars or biofuels and nano-cellulose
FI20115882A0 (fi) * 2011-09-08 2011-09-08 Teknologian Tutkimuskeskus Vtt Oy Menetelmä kuitulangan valmistamiseksi
FI126041B (fi) 2011-09-12 2016-06-15 Stora Enso Oyj Menetelmä retention säätämiseksi ja menetelmässä käytettävä välituote
FI126457B (fi) 2011-11-14 2016-12-15 Upm Kymmene Corp Menetelmä fibrillisellun tuottamiseksi
FI126118B (en) * 2012-02-10 2016-06-30 Upm Kymmene Corp Process for pretreatment of cellulose pulp
FI126013B (en) * 2012-02-13 2016-05-31 Upm Kymmene Corp A method and system for treating fibril cellulose, as well as a fibril cellulose material
GB2502955B (en) * 2012-05-29 2016-07-27 De La Rue Int Ltd A substrate for security documents
CA2876083C (fr) 2012-06-15 2021-06-15 University Of Maine System Board Of Trustees Papier couche antiadhesif et son procede de fabrication
FI127817B (en) * 2012-08-21 2019-03-15 Upm Kymmene Corp Process for manufacturing a paper product, and paper product
FI127526B (en) * 2012-11-03 2018-08-15 Upm Kymmene Corp Process for manufacturing nanofibrillar cellulose
SE537517C2 (sv) 2012-12-14 2015-05-26 Stora Enso Oyj Våtlagt arkmaterial innefattande mikrofibrillerad cellulosasamt förfarande för tillverkning därav
FR3003581B1 (fr) 2013-03-20 2015-03-20 Ahlstroem Oy Support fibreux a base de fibres et de nanofibrilles de polysaccharide
PL2799618T3 (pl) * 2013-04-29 2016-12-30 Zastosowanie mikronizowanej celulozy oraz fluorescencyjnego środka bielącego do powierzchniowej obróbki celulozowych materiałów
US9656914B2 (en) 2013-05-01 2017-05-23 Ecolab Usa Inc. Rheology modifying agents for slurries
FI127014B (en) 2013-05-15 2017-09-29 Upm Kymmene Corp Process for the manufacture of nanofibrillar cellulose and for the manufacture of a paper product
FI125942B (en) * 2013-07-26 2016-04-15 Upm Kymmene Corp A method of modifying a nanofibril cellulose composition
US10695947B2 (en) 2013-07-31 2020-06-30 University Of Maine System Board Of Trustees Composite building products bound with cellulose nanofibers
US9410288B2 (en) 2013-08-08 2016-08-09 Ecolab Usa Inc. Use of nanocrystaline cellulose and polymer grafted nanocrystaline cellulose for increasing retention in papermaking process
US9303360B2 (en) * 2013-08-08 2016-04-05 Ecolab Usa Inc. Use of nanocrystaline cellulose and polymer grafted nanocrystaline cellulose for increasing retention in papermaking process
AU2013399666B2 (en) * 2013-09-04 2017-05-25 Halliburton Energy Services, Inc. Nano-carbohydrate composites as a lost circulation materials - LCM origami and other drilling fluid applications
FI126042B (en) 2014-03-31 2016-06-15 Upm Kymmene Corp Method for producing nanofibril cellulose and nanofibril cellulose product
GB201409047D0 (en) * 2014-05-21 2014-07-02 Cellucomp Ltd Cellulose microfibrils
FI126688B (en) * 2014-06-30 2017-03-31 Upm Kymmene Corp Method and apparatus for monitoring the quality of nanofibrillary cellulose
US9970159B2 (en) * 2014-12-31 2018-05-15 Innovatech Engineering, LLC Manufacture of hydrated nanocellulose sheets for use as a dermatological treatment
KR20170141237A (ko) 2015-05-01 2017-12-22 에프피이노베이션스 건조 혼합된 재분산성 셀룰로스 필라멘트/캐리어 제품 및 이의 제조 방법
CA2988124C (fr) * 2015-06-04 2023-01-17 Bruce Crossley Procede de production de nanofibrilles de cellulose
ES2741514T3 (es) 2015-10-14 2020-02-11 Fiberlean Tech Ltd Material laminado conformable en 3D
CA3001717A1 (fr) 2015-10-15 2017-04-20 Ecolab Usa Inc. Cellulose nanocristalline et cellulose nanocristalline greffee avec un polymere comme agents de modification de la rheologie pour suspensions d'oxyde de magnesium et de chaux
FI130254B (en) * 2016-02-03 2023-05-11 Kemira Oyj METHOD FOR PREPARATION OF MICROFIBRILLATED CELLULOSE AND PRODUCT
SE539833C2 (en) * 2016-04-01 2017-12-12 Stora Enso Oyj Process for production of film comprising microfibrillated cellulose
CN109071346B (zh) * 2016-04-04 2022-06-14 菲博林科技有限公司 用于在天花板、地板和建筑产品中提供增加的强度的组合物和方法
ES2857512T3 (es) 2016-04-05 2021-09-29 Fiberlean Tech Ltd Productos de papel y cartón
US11846072B2 (en) 2016-04-05 2023-12-19 Fiberlean Technologies Limited Process of making paper and paperboard products
BR112018070846B1 (pt) 2016-04-22 2023-04-11 Fiberlean Technologies Limited Fibras compreendendo celulose microfibrilada e métodos de fabricação de fibras e materiais não tecidos a partir das mesmas
SE539950C2 (en) * 2016-05-20 2018-02-06 Stora Enso Oyj An uv blocking film comprising microfibrillated cellulose, a method for producing said film and use of a composition having uv blocking properties
US10724173B2 (en) 2016-07-01 2020-07-28 Mercer International, Inc. Multi-density tissue towel products comprising high-aspect-ratio cellulose filaments
US10570261B2 (en) 2016-07-01 2020-02-25 Mercer International Inc. Process for making tissue or towel products comprising nanofilaments
US10463205B2 (en) 2016-07-01 2019-11-05 Mercer International Inc. Process for making tissue or towel products comprising nanofilaments
AU2017318676B2 (en) * 2016-09-01 2022-06-02 Chemstone, Inc. Methods for biobased derivatization of cellulosic surfaces
JP2019534958A (ja) 2016-09-19 2019-12-05 マーサー インターナショナル インコーポレイテッド 特有の物理的強度特性を有する吸収紙製品
SE541755C2 (en) * 2017-03-01 2019-12-10 Stora Enso Oyj Process for production of film comprising microfibrillated cellulose
US10822442B2 (en) 2017-07-17 2020-11-03 Ecolab Usa Inc. Rheology-modifying agents for slurries
US10865317B2 (en) 2017-08-31 2020-12-15 Kimberly-Clark Worldwide, Inc. Low-fluorine compositions with cellulose for generating superhydrophobic surfaces
CN111684130A (zh) * 2017-12-04 2020-09-18 芬欧汇川集团 由化学纸浆制造用于复合应用的纸浆前体材料的方法及其产品
WO2019161272A1 (fr) 2018-02-15 2019-08-22 North Carolina State University Synthèse de microsphères, nanosphères et structures de carbone par carbonisation hydrothermique
US11352747B2 (en) 2018-04-12 2022-06-07 Mercer International Inc. Processes for improving high aspect ratio cellulose filament blends
CA3106586A1 (fr) * 2018-07-19 2020-01-23 Kemira Oyj Composition de cellulose
FI129352B (en) * 2019-05-03 2021-12-31 Valmet Technologies Inc Monitoring and control of the pulp milling

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070193707A1 (en) 2005-02-19 2007-08-23 Xuan Truong Nguyen Pulp and paper having increased brightness
JP2007262594A (ja) 2006-03-27 2007-10-11 Kimura Chem Plants Co Ltd 機能性粒子含有率の高い機能性セルロース材料及びその製造方法
WO2008124489A1 (fr) 2007-04-05 2008-10-16 Akzo Nobel N.V. Procédé permettant d'améliorer les propriétés optiques du papier
JP2009019200A (ja) 2007-06-11 2009-01-29 Kyoto Univ リグニン含有ミクロフィブリル化植物繊維及びその製造方法
WO2009126106A1 (fr) 2008-04-10 2009-10-15 Stfi-Packforsk Ab Procédé de réalisation de nanocellulose mettant en jeu la modification de fibres de cellulose

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534912A (en) * 1967-01-11 1970-10-20 Beloit Corp Low speed refining of a papermaking pulp solution
US3591451A (en) * 1969-02-06 1971-07-06 Ethyl Corp Pretreatment of vegetable matter and delignification of the refined matter with chloring dioxide
BR9710338A (pt) * 1996-07-15 1999-08-17 Rhodia Chimie Sa Composi-Æo processo de prepara-Æo da mesma suspensÆo e utiliza-Æo de celulose carboxilada da composi-Æo e da suspensÆo
BRPI0607171A2 (pt) * 2005-02-19 2009-08-11 Int Paper Co método para fazer polpa e/ou um substrato de papel, polpa, polpa ou substrato de papel e composição
US7914646B2 (en) * 2006-07-21 2011-03-29 Nalco Company Compositions and processes for paper production
DE07709298T1 (de) * 2006-02-08 2014-01-30 Stfi-Packforsk Ab Verfahren zur Herstellung von mikrofibrillierter Cellulose
EP1994222A1 (fr) * 2006-02-20 2008-11-26 Clariant International Ltd. Procede ameliore de fabrication de papier et de carton
JP4958097B2 (ja) * 2006-07-19 2012-06-20 国立大学法人京都大学 ナノファイバーシート及びその製造方法並びに繊維強化複合材料
WO2009069641A1 (fr) * 2007-11-26 2009-06-04 The University Of Tokyo Nanofibre de cellulose et son procédé de fabrication, et dispersion de nanofibre de cellulose
US8298373B2 (en) * 2008-02-07 2012-10-30 University Of New Brunswick Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070193707A1 (en) 2005-02-19 2007-08-23 Xuan Truong Nguyen Pulp and paper having increased brightness
JP2007262594A (ja) 2006-03-27 2007-10-11 Kimura Chem Plants Co Ltd 機能性粒子含有率の高い機能性セルロース材料及びその製造方法
WO2008124489A1 (fr) 2007-04-05 2008-10-16 Akzo Nobel N.V. Procédé permettant d'améliorer les propriétés optiques du papier
JP2009019200A (ja) 2007-06-11 2009-01-29 Kyoto Univ リグニン含有ミクロフィブリル化植物繊維及びその製造方法
WO2009126106A1 (fr) 2008-04-10 2009-10-15 Stfi-Packforsk Ab Procédé de réalisation de nanocellulose mettant en jeu la modification de fibres de cellulose

Also Published As

Publication number Publication date
CN102686799A (zh) 2012-09-19
WO2011064441A1 (fr) 2011-06-03
US20130000855A1 (en) 2013-01-03
EP2504487A4 (fr) 2014-01-22
EP2504487A1 (fr) 2012-10-03
FI123289B (fi) 2013-01-31
FI20096233A (fi) 2011-05-25
FI20096233A0 (fi) 2009-11-24

Similar Documents

Publication Publication Date Title
EP2504487B1 (fr) Procédé de fabrication de pâte à papier à base de cellulose nano-fibrillée et utilisation de pâte à papier dans la fabrication de papier ou dans des composites à base de cellulose nano-fibrillée
CA2824191C (fr) Nanofilaments de cellulose a rapport d'allongement eleve et leur procede de fabrication
EP2805986B1 (fr) Procédé pour la production de gels de cellulose nano-fibrillaire
Oliaei et al. Microfibrillated lignocellulose (MFLC) and nanopaper films from unbleached kraft softwood pulp
RU2535688C2 (ru) Способ получения модифицированной целлюлозы
CA2641607C (fr) Procede de fabrication de cellulose microfibrillee
Hassan et al. Enzyme-assisted isolation of microfibrillated cellulose from date palm fruit stalks
EP3802949B1 (fr) Procédés d'amélioration de mélanges de filaments de cellulose à facteur de forme élevé
CN112673133B (zh) 纤维素纤维的成型体及其制造方法
SE543552C2 (en) Refined cellulose fiber composition
US10683612B2 (en) Method for producing cellulose filaments with less refining energy
Park et al. Utilization of cellulose micro/nanofibrils as paper additive for the manufacturing of security paper
US20190301094A1 (en) Process of producing fibrillated nanocellulose with low energy consumption
JP7346018B2 (ja) セルロース繊維スラリーの製造方法
WO2024182872A1 (fr) Cellulose microfibrillée (mfc) réticulée, composition et procédé de production de mfc réticulée
WO2023209622A1 (fr) Pâte modifiée séchée ayant une certaine teneur en microfibrilles et en fibres préfibrillées
Kasmani Prospects for the Preparation of Paper Money from Cotton Fibers and Bleached Softwood Kraft Pulp Fibers with Nanofibrillated Cellulose

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

17P Request for examination filed

Effective date: 20120511

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

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20140102

RIC1 Information provided on ipc code assigned before grant

Ipc: D21H 11/18 20060101AFI20131217BHEP

Ipc: D21H 21/30 20060101ALI20131217BHEP

Ipc: D21H 21/32 20060101ALI20131217BHEP

Ipc: D21D 1/20 20060101ALI20131217BHEP

Ipc: D21C 9/00 20060101ALI20131217BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160212

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 814210

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160815

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602010034947

Country of ref document: DE

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: MG4D

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20160720

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20160720

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 814210

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160720

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

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: 20160720

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: 20161120

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: 20160720

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: 20160720

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: 20160720

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: 20160720

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

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: 20160720

Ref country code: BE

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

Effective date: 20160720

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: 20160720

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: 20160720

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: 20161121

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: 20160720

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: 20161021

REG Reference to a national code

Ref country code: DE

Ref legal event code: R026

Ref document number: 602010034947

Country of ref document: DE

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

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: 20160720

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: 20160720

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

26 Opposition filed

Opponent name: STORA ENSO OYJ

Effective date: 20170420

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

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: 20160720

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: 20161020

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: 20160720

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: 20160720

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: 20160720

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: CH

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

Effective date: 20161130

Ref country code: LI

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

Effective date: 20161130

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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: 20160720

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: LU

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

Effective date: 20161130

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

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: 20161105

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: 20101105

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: 20160720

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: 20160720

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: 20160720

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: 20160720

PLCK Communication despatched that opposition was rejected

Free format text: ORIGINAL CODE: EPIDOSNREJ1

REG Reference to a national code

Ref country code: DE

Ref legal event code: R100

Ref document number: 602010034947

Country of ref document: DE

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 NON-PAYMENT OF DUE FEES

Effective date: 20161105

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

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

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: 20160720

27O Opposition rejected

Effective date: 20180721

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

Ref country code: GB

Payment date: 20231127

Year of fee payment: 14

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

Ref country code: SE

Payment date: 20231127

Year of fee payment: 14

Ref country code: NO

Payment date: 20231129

Year of fee payment: 14

Ref country code: FR

Payment date: 20231127

Year of fee payment: 14

Ref country code: FI

Payment date: 20231127

Year of fee payment: 14

Ref country code: DE

Payment date: 20231129

Year of fee payment: 14