WO2011064441A1 - Method for manufacturing nanofibrillated cellulose pulp and use of the pulp in paper manufacturing or in nanofibrillated cellulose composites - Google Patents

Method for manufacturing nanofibrillated cellulose pulp and use of the pulp in paper manufacturing or in nanofibrillated cellulose composites Download PDF

Info

Publication number
WO2011064441A1
WO2011064441A1 PCT/FI2010/050897 FI2010050897W WO2011064441A1 WO 2011064441 A1 WO2011064441 A1 WO 2011064441A1 FI 2010050897 W FI2010050897 W FI 2010050897W WO 2011064441 A1 WO2011064441 A1 WO 2011064441A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulp
cellulose
optical brightening
brightening agent
refining
Prior art date
Application number
PCT/FI2010/050897
Other languages
English (en)
French (fr)
Inventor
Markus Nuopponen
Taru PÄIVÄLÄINEN
Antti Laukkanen
Jouni Paltakari
Original Assignee
Upm-Kymmene Corporation
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=WO2011064441(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Upm-Kymmene Corporation filed Critical Upm-Kymmene Corporation
Priority to US13/511,956 priority Critical patent/US20130000855A1/en
Priority to EP10832694.3A priority patent/EP2504487B1/de
Priority to CN2010800531975A priority patent/CN102686799A/zh
Publication of WO2011064441A1 publication Critical patent/WO2011064441A1/en

Links

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.
  • 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. Summary of the Invention
  • 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 1 00 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.
  • Fig. 5 shows some turbidity and centrifugation experimental test results of the fluidized samples.
  • 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 1 5-25 ⁇ and the length exceeds 500 ⁇ , 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.
  • the term "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.
  • cellulose fibers typically have not been fully fibrillated; a large fraction of cellulose fibers with unchanged dimensions are still present in addition to refined cellulose material.
  • the large fibers in the refined pulp may have fibrillated surface.
  • the finest fraction of cellulose based material in the "refined pulp” consists of nanofibrillated cellulose, i.e. cellulose microfibrils and microfibril bundles with diameter less than 200 nm.
  • 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 ⁇ .
  • the smallest microfibrils are similar to the so called elementary fibrils, which are typically 2-1 2 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.
  • nanofibrillated cellulose can be carried out before, after, or during the production of nanofibrillated cellulose.
  • nanofibrillated cellulose There are several widely used synonyms for nanofibrillated cellulose.
  • MFC microfibrillated 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.
  • 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.
  • Properties of 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 1 a - 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.
  • 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 1 00 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 cornmercialiy available optical brightening agents in pulp and paper industries are based on coumarin and pyrazolone 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, Le stilbene, coumarin and pyrazoline are preferred to use in the practice of this invention. From those chemicals, 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. Therefore, 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 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 1 00 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. ple preparation
  • 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 ⁇ . In the second pass, the fiber suspension was passed through two sequential chambers with diameters at 500 ⁇ and 200 ⁇ . The third pass was carried out so that the fiber suspension passed through sequential 500 ⁇ and 1 00 ⁇ 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 1 5 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. racterization
  • 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. paration of paper sheets
  • 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 gellike 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 : 1 0 000 x) in which the reference sample (in figure 4a) and the sample with hexasulphonated optical brightening agent addition (in figure 4b) are presented. As can be seen, 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.
  • Quality of the nanofibrillated cellulose can be analyzed using centrifugation of nano-sized material and measuring the turbidity of the samples. Centrifugation results are supposed to describe the degree of fibrillation so that the more the nano-sized material has more efficient fibrillation than less nano-sized material. When it comes to turbidity results, the smaller the value for turbidity is, the more there should be nano-sized material in the sample.
  • Figure 5 shows turbidity and centrifugation results of the fluidized samples. In this figure 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.

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)
PCT/FI2010/050897 2009-11-24 2010-11-05 Method for manufacturing nanofibrillated cellulose pulp and use of the pulp in paper manufacturing or in nanofibrillated cellulose composites WO2011064441A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US13/511,956 US20130000855A1 (en) 2009-11-24 2010-11-05 Method for manufacturing nanofibrillated cellulose pulp and use of the pulp in paper manufacturing or in nanofibrillated cellulose composites
EP10832694.3A EP2504487B1 (de) 2009-11-24 2010-11-05 Verfahren zur herstellung einer nanofibrillierten zellulosepulpe und verwendung der pulpe bei der papierherstellung in nanofibrillierten zellulose-verbundstoffen
CN2010800531975A CN102686799A (zh) 2009-11-24 2010-11-05 用于生产纳米原纤化纤维素纸浆的方法及纸浆在造纸或纳米原纤化纤维素复合物中的用途

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
FI20096233 2009-11-24

Publications (1)

Publication Number Publication Date
WO2011064441A1 true WO2011064441A1 (en) 2011-06-03

Family

ID=41395280

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2010/050897 WO2011064441A1 (en) 2009-11-24 2010-11-05 Method for manufacturing nanofibrillated cellulose pulp and use of the pulp in paper manufacturing or in nanofibrillated cellulose composites

Country Status (5)

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

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012097446A1 (en) 2011-01-21 2012-07-26 Fpinnovations High aspect ratio cellulose nanofilaments and method for their production
US8231764B2 (en) 2009-05-15 2012-07-31 Imerys Minerals, Limited Paper filler method
WO2013117823A1 (en) * 2012-02-10 2013-08-15 Upm-Kymmene Corporation Method for pretreating cellulose pulp
WO2014068196A3 (en) * 2012-11-03 2014-06-26 Upm-Kymmene Corporation Method for producing nanofibrillar cellulose
WO2014147295A1 (en) * 2013-03-20 2014-09-25 Ahlstrom Corporation Fibrous substrate containing fibers and nanofibrillar polysaccharide
EP2799618A1 (de) 2013-04-29 2014-11-05 Blankophor GmbH & Co. KG Verwendung von mikronisierter Cellulose und fluoreszierendes Weißmittel zur Oberflächenbehandlung von Cellulosematerialien
WO2015011337A1 (en) * 2013-07-26 2015-01-29 Upm-Kymmene Coprporation Method of modifying nanofibrillar cellulose composition
US20150191036A1 (en) * 2012-05-29 2015-07-09 De La Rue International Limited Substrate for security documents
US20150218756A1 (en) * 2012-08-21 2015-08-06 Upm-Kymmene Corporation Method for making paper product and paper product
US9157189B2 (en) 2011-09-12 2015-10-13 Stora Enso Oyj Method of controlling retention and an intermediate product used in the method
EP2753738A4 (de) * 2011-09-08 2016-01-06 Spinnova Oy Verfahren zur herstellung faserigem garn, faseriges garn und verwendung des faserigen garns
EP2678474A4 (de) * 2011-02-24 2016-03-23 Innventia Ab Einstufiges verfahren zur herstellung von nanozellstoff durch beschleunigung und zersetzung von rohmaterial
EP2997191A4 (de) * 2013-05-15 2016-12-21 Upm Kymmene Corp Verfahren zur herstellung nanofibrillärer cellulose und zur herstellung eines papierprodukts
US9739011B2 (en) 2011-11-14 2017-08-22 Upm-Kymmene Corporation Method for producing nanofibrillar cellulose
US20180066073A1 (en) * 2016-09-01 2018-03-08 Hs Manufacturing Group Llc Methods for biobased derivatization of cellulosic surfaces
US10053817B2 (en) 2010-04-27 2018-08-21 Fiberlean Technologies Limited Process for the manufacture of structured materials using nano-fibrillar cellulose gels
US10119919B2 (en) 2014-06-30 2018-11-06 Upm-Kymmene Corporation Method and device for monitoring the quality of nanofibrillar cellulose
US10214859B2 (en) 2016-04-05 2019-02-26 Fiberlean Technologies Limited Paper and paperboard products
US10253457B2 (en) 2010-11-15 2019-04-09 Fiberlean Technologies Limited Compositions
US10294371B2 (en) 2009-03-30 2019-05-21 Fiberlean Technologies Limited Process for the production of nano-fibrillar cellulose gels
US10301774B2 (en) 2009-03-30 2019-05-28 Fiberlean Technologies Limited Process for the production of nano-fibrillar cellulose suspensions
US10463205B2 (en) 2016-07-01 2019-11-05 Mercer International Inc. Process for making tissue or towel products comprising nanofilaments
US10570261B2 (en) 2016-07-01 2020-02-25 Mercer International Inc. Process for making tissue or towel products comprising nanofilaments
US10577469B2 (en) 2015-10-14 2020-03-03 Fiberlean Technologies Limited 3D-formable sheet material
US10640927B2 (en) 2016-09-19 2020-05-05 Mercer International, Inc. Absorbent paper products having unique physical strength properties
US10724173B2 (en) 2016-07-01 2020-07-28 Mercer International, Inc. Multi-density tissue towel products comprising high-aspect-ratio cellulose filaments
US10731298B2 (en) 2012-06-15 2020-08-04 University Of Maine System Board Of Trustees Release paper and method of manufacture
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
US10794006B2 (en) 2016-04-22 2020-10-06 Fiberlean Technologies Limited Compositions comprising microfibrilated cellulose and polymers and methods of manufacturing fibres and nonwoven materials therefrom
EP3733959A1 (de) * 2019-05-03 2020-11-04 Valmet Technologies, Inc. Überwachung und steuerung der raffinierung von faserzellstoff
US11155697B2 (en) 2010-04-27 2021-10-26 Fiberlean Technologies Limited Process for the production of gel-based composite materials
US11352747B2 (en) 2018-04-12 2022-06-07 Mercer International Inc. Processes for improving high aspect ratio cellulose filament blends
US11724941B2 (en) 2018-02-15 2023-08-15 North Carolina State University Synthesis of micron and nanoscale carbon spheres and structures using hydrothemal carbonization
US11846072B2 (en) 2016-04-05 2023-12-19 Fiberlean Technologies Limited Process of making paper and paperboard products

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9284474B2 (en) 2007-12-20 2016-03-15 University Of Tennessee Research Foundation Wood adhesives containing reinforced additives for structural engineering products
FI124724B (fi) * 2009-02-13 2014-12-31 Upm Kymmene Oyj Menetelmä muokatun selluloosan valmistamiseksi
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
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
SE537517C2 (sv) * 2012-12-14 2015-05-26 Stora Enso Oyj Våtlagt arkmaterial innefattande mikrofibrillerad cellulosasamt förfarande för tillverkning därav
US9656914B2 (en) 2013-05-01 2017-05-23 Ecolab Usa Inc. Rheology modifying agents for slurries
US10695947B2 (en) 2013-07-31 2020-06-30 University Of Maine System Board Of Trustees Composite building products bound with cellulose nanofibers
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
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
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
US9970159B2 (en) * 2014-12-31 2018-05-15 Innovatech Engineering, LLC Manufacture of hydrated nanocellulose sheets for use as a dermatological treatment
CA2983185C (en) 2015-05-01 2019-06-04 Fpinnovations A dry mixed re-dispersible cellulose filament/carrier product and the method of making the same
US10240290B2 (en) * 2015-06-04 2019-03-26 Gl&V Usa, Inc. Method of producing cellulose nanofibrils
CA3001717A1 (en) 2015-10-15 2017-04-20 Ecolab Usa Inc. Nanocrystalline cellulose and polymer-grafted nanocrystalline cellulose as rheology modifying agents for magnesium oxide and lime slurries
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
AU2017247688B2 (en) * 2016-04-04 2020-11-05 Fiberlean Technologies Limited Compositions and methods for providing increased strength in ceiling, flooring, and building products
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
SE541755C2 (en) * 2017-03-01 2019-12-10 Stora Enso Oyj Process for production of film comprising microfibrillated cellulose
WO2019018150A1 (en) 2017-07-17 2019-01-24 Ecolab USA, Inc. RHEOLOGY MODIFICATION AGENTS FOR SLURRY
US10865317B2 (en) 2017-08-31 2020-12-15 Kimberly-Clark Worldwide, Inc. Low-fluorine compositions with cellulose for generating superhydrophobic surfaces
CA3106586A1 (en) * 2018-07-19 2020-01-23 Kemira Oyj Cellulose composition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060185808A1 (en) * 2005-02-19 2006-08-24 Nguyen Xuan T Fixation of optical brightening agents onto papermaking fiber
US20090205795A1 (en) * 2008-02-07 2009-08-20 Yonghao Ni Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents

Family Cites Families (13)

* 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
SK3499A3 (en) * 1996-07-15 1999-07-12 Rhodia Chimie Sa Additivation of essentially amorphous cellulose nanofibrils with carboxyl cellulose with a high degree of substitution
US7638016B2 (en) * 2005-02-19 2009-12-29 International Paper Company Method for treating kraft pulp with optical brighteners after chlorine bleaching to increase brightness
US7914646B2 (en) * 2006-07-21 2011-03-29 Nalco Company Compositions and processes for paper production
PL1984561T3 (pl) * 2006-02-08 2016-07-29 Innventia Ab Sposób wytwarzania mikrofibrylowanej celulozy
US20090025895A1 (en) * 2006-02-20 2009-01-29 John Stuart Cowman Process for the Manufacture of Paper and Board
JP4831570B2 (ja) 2006-03-27 2011-12-07 木村化工機株式会社 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
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
BRPI0809172A2 (pt) * 2007-04-05 2014-09-16 Akzo Nobel Nv "método de fabricação de papel a partir de polpa refinada"
JP5398180B2 (ja) * 2007-06-11 2014-01-29 国立大学法人京都大学 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
WO2009069641A1 (ja) * 2007-11-26 2009-06-04 The University Of Tokyo セルロースナノファイバーとその製造方法、セルロースナノファイバー分散液
SE0800807L (sv) 2008-04-10 2009-10-11 Stfi Packforsk Ab Nytt förfarande

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060185808A1 (en) * 2005-02-19 2006-08-24 Nguyen Xuan T Fixation of optical brightening agents onto papermaking fiber
US20090205795A1 (en) * 2008-02-07 2009-08-20 Yonghao Ni Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2504487A4 *

Cited By (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10982387B2 (en) 2009-03-30 2021-04-20 Fiberlean Technologies Limited Process for the production of nano-fibrillar cellulose suspensions
US10294371B2 (en) 2009-03-30 2019-05-21 Fiberlean Technologies Limited Process for the production of nano-fibrillar cellulose gels
US10301774B2 (en) 2009-03-30 2019-05-28 Fiberlean Technologies Limited Process for the production of nano-fibrillar cellulose suspensions
US10975242B2 (en) 2009-03-30 2021-04-13 Fiberlean Technologies Limited Process for the production of nano-fibrillar cellulose gels
US10100464B2 (en) 2009-05-15 2018-10-16 Fiberlean Technologies Limited Paper filler composition
US11970817B2 (en) 2009-05-15 2024-04-30 Fiberlean Technologies Limited Paper filler composition
US11162219B2 (en) 2009-05-15 2021-11-02 Fiberlean Technologies Limited Paper filler composition
US11732411B2 (en) 2009-05-15 2023-08-22 Fiberlean Technologies Limited Paper filler composition
US11377791B2 (en) 2009-05-15 2022-07-05 Fiberlean Technologies Limited Paper filler composition
US9127405B2 (en) 2009-05-15 2015-09-08 Imerys Minerals, Limited Paper filler composition
US8231764B2 (en) 2009-05-15 2012-07-31 Imerys Minerals, Limited Paper filler method
US10100467B2 (en) 2010-04-27 2018-10-16 Fiberlean Technologies Limited Process for the manufacture of structured materials using nano-fibrillar cellulose gels
US11155697B2 (en) 2010-04-27 2021-10-26 Fiberlean Technologies Limited Process for the production of gel-based composite materials
US10633796B2 (en) 2010-04-27 2020-04-28 Fiberlean Technologies Limited Process for the manufacture of structured materials using nano-fibrillar cellulose gels
US10053817B2 (en) 2010-04-27 2018-08-21 Fiberlean Technologies Limited Process for the manufacture of structured materials using nano-fibrillar cellulose gels
US10253457B2 (en) 2010-11-15 2019-04-09 Fiberlean Technologies Limited Compositions
US11136721B2 (en) 2010-11-15 2021-10-05 Fiberlean Technologies Limited Compositions
US11655594B2 (en) 2010-11-15 2023-05-23 Fiberlean Technologies Limited Compositions
US9051684B2 (en) 2011-01-21 2015-06-09 Fpinnovations High aspect ratio cellulose nanofilaments and method for their production
WO2012097446A1 (en) 2011-01-21 2012-07-26 Fpinnovations High aspect ratio cellulose nanofilaments and method for their production
EP2678474A4 (de) * 2011-02-24 2016-03-23 Innventia Ab Einstufiges verfahren zur herstellung von nanozellstoff durch beschleunigung und zersetzung von rohmaterial
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
EP2753738A4 (de) * 2011-09-08 2016-01-06 Spinnova Oy Verfahren zur herstellung faserigem garn, faseriges garn und verwendung des faserigen garns
US9157189B2 (en) 2011-09-12 2015-10-13 Stora Enso Oyj Method of controlling retention and an intermediate product used in the method
US9739011B2 (en) 2011-11-14 2017-08-22 Upm-Kymmene Corporation Method for producing nanofibrillar cellulose
US9725849B2 (en) 2012-02-10 2017-08-08 Upm-Kymmene Corporation Method for pretreating cellulose pulp
CN104105827A (zh) * 2012-02-10 2014-10-15 芬欧汇川集团 预处理纤维素浆料的方法
US9315942B2 (en) 2012-02-10 2016-04-19 Upm-Kymmene Corporation Method for pretreating cellulose pulp
WO2013117823A1 (en) * 2012-02-10 2013-08-15 Upm-Kymmene Corporation Method for pretreating cellulose pulp
US20150191036A1 (en) * 2012-05-29 2015-07-09 De La Rue International Limited Substrate for security documents
US10731298B2 (en) 2012-06-15 2020-08-04 University Of Maine System Board Of Trustees Release paper and method of manufacture
US9702085B2 (en) * 2012-08-21 2017-07-11 Upm-Kymmene Corporation Method for making paper product and paper product
US20150218756A1 (en) * 2012-08-21 2015-08-06 Upm-Kymmene Corporation Method for making paper product and paper product
WO2014068196A3 (en) * 2012-11-03 2014-06-26 Upm-Kymmene Corporation Method for producing nanofibrillar cellulose
US9797093B2 (en) 2012-11-03 2017-10-24 Upm-Kymmene Corporation Method for producing nanofibrillar cellulose
JP2016501926A (ja) * 2012-11-03 2016-01-21 ウーペーエム−キュンメネ コーポレイションＵＰＭ−Ｋｙｍｍｅｎｅ Ｃｏｒｐｏｒａｔｉｏｎ ナノフィブリル化セルロースの製造方法
US10781025B2 (en) 2013-03-20 2020-09-22 Ahlstrom-Munksjö Oyj Fibrous substrate containing fibers and nanofibrillar polysaccharide
WO2014147295A1 (en) * 2013-03-20 2014-09-25 Ahlstrom Corporation Fibrous substrate containing fibers and nanofibrillar polysaccharide
FR3003581A1 (fr) * 2013-03-20 2014-09-26 Ahlstroem Oy Support fibreux a base de fibres et de nanofibrilles de polysaccharide
EP2799618A1 (de) 2013-04-29 2014-11-05 Blankophor GmbH & Co. KG Verwendung von mikronisierter Cellulose und fluoreszierendes Weißmittel zur Oberflächenbehandlung von Cellulosematerialien
WO2014177504A1 (en) * 2013-04-29 2014-11-06 Blankophor Gmbh & Co. Kg Use of micronized cellulose and fluorescent whitening agent for surface treatment of cellulosic materials
US20160060814A1 (en) * 2013-04-29 2016-03-03 Blankophor Gmbh & Co., Kg Use of Micronized Cellulose and Fluorescent Whitening Agent for Surface Treatment of Cellulosic Materials
JP2016522862A (ja) * 2013-04-29 2016-08-04 ブランコファー ゲーエムベーハー ウント コー．カーゲー セルロース系材料の表面処理用の微粉化セルロース及び蛍光増白剤の使用
US9976256B2 (en) 2013-05-15 2018-05-22 Upm-Kymmene Corporation Method for making nanofibrillar cellulose and for making a paper product
EP2997191A4 (de) * 2013-05-15 2016-12-21 Upm Kymmene Corp Verfahren zur herstellung nanofibrillärer cellulose und zur herstellung eines papierprodukts
WO2015011337A1 (en) * 2013-07-26 2015-01-29 Upm-Kymmene Coprporation Method of modifying nanofibrillar cellulose composition
US9809655B2 (en) 2013-07-26 2017-11-07 Upm-Kymmene Corporation Method of modifying nanofibrillar cellulose composition
US10119919B2 (en) 2014-06-30 2018-11-06 Upm-Kymmene Corporation Method and device for monitoring the quality of nanofibrillar cellulose
US11932740B2 (en) 2015-10-14 2024-03-19 Fiberlean Technologies Limited 3D-formable sheet material
US11384210B2 (en) 2015-10-14 2022-07-12 Fiberlean Technologies Limited 3-D formable sheet material
US10577469B2 (en) 2015-10-14 2020-03-03 Fiberlean Technologies Limited 3D-formable sheet material
US11274399B2 (en) 2016-04-05 2022-03-15 Fiberlean Technologies Limited Paper and paperboard products
US10801162B2 (en) 2016-04-05 2020-10-13 Fiberlean Technologies Limited Paper and paperboard products
US11846072B2 (en) 2016-04-05 2023-12-19 Fiberlean Technologies Limited Process of making paper and paperboard products
US11732421B2 (en) 2016-04-05 2023-08-22 Fiberlean Technologies Limited Method of making paper or board products
US10214859B2 (en) 2016-04-05 2019-02-26 Fiberlean Technologies Limited Paper and paperboard products
US10794006B2 (en) 2016-04-22 2020-10-06 Fiberlean Technologies Limited Compositions comprising microfibrilated cellulose and polymers and methods of manufacturing fibres and nonwoven materials therefrom
US11572659B2 (en) 2016-04-22 2023-02-07 Fiberlean Technologies Limited Compositions comprising microfibrillated cellulose and polymers and methods of manufacturing fibres and nonwoven materials therefrom
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
US11098134B2 (en) 2016-09-01 2021-08-24 Hs Manufacturing Group, Llc Methods for biobased derivatization of cellulosic surfaces
US10730959B2 (en) * 2016-09-01 2020-08-04 Hs Manufacturing Group, Llc Methods for biobased derivatization of cellulosic surfaces
US20180066073A1 (en) * 2016-09-01 2018-03-08 Hs Manufacturing Group Llc Methods for biobased derivatization of cellulosic surfaces
US10640927B2 (en) 2016-09-19 2020-05-05 Mercer International, Inc. Absorbent paper products having unique physical strength properties
US10640928B2 (en) 2016-09-19 2020-05-05 Mercer International Inc. Absorbent paper products having unique physical strength properties
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
US11724941B2 (en) 2018-02-15 2023-08-15 North Carolina State University Synthesis of micron and nanoscale carbon spheres and structures using hydrothemal carbonization
US11352747B2 (en) 2018-04-12 2022-06-07 Mercer International Inc. Processes for improving high aspect ratio cellulose filament blends
EP3733959A1 (de) * 2019-05-03 2020-11-04 Valmet Technologies, Inc. Überwachung und steuerung der raffinierung von faserzellstoff

Also Published As

Publication number Publication date
EP2504487A4 (de) 2014-01-22
EP2504487B1 (de) 2016-07-20
FI20096233A0 (fi) 2009-11-24
CN102686799A (zh) 2012-09-19
EP2504487A1 (de) 2012-10-03
US20130000855A1 (en) 2013-01-03
FI20096233A (fi) 2011-05-25
FI123289B (fi) 2013-01-31

Similar Documents

Publication Publication Date Title
EP2504487B1 (de) Verfahren zur herstellung einer nanofibrillierten zellulosepulpe und verwendung der pulpe bei der papierherstellung in nanofibrillierten zellulose-verbundstoffen
US9458571B2 (en) Method for producing furnish, furnish and paper
CA2824191C (en) High aspect ratio cellulose nanofilaments and method for their production
EP2236545B1 (de) Verfahren zur Herstellung von nano-fibrillären Zellulosegels
RU2535688C2 (ru) Способ получения модифицированной целлюлозы
Oliaei et al. Microfibrillated lignocellulose (MFLC) and nanopaper films from unbleached kraft softwood pulp
CA2641607A1 (en) Method for the manufacturing of microfibrillated cellulose
US11814794B2 (en) Cellulose fiber molded product and method for manufacturing the same
SE543552C2 (en) Refined cellulose fiber composition
Fathi et al. Prospects for the preparation of paper money from cotton fibers and bleached softwood kraft pulp fibers with nanofibrillated cellulose
Park et al. Utilization of cellulose micro/nanofibrils as paper additive for the manufacturing of security paper
AU2017327762A1 (en) Method for producing cellulose filaments with less refining energy
JP7346018B2 (ja) セルロース繊維スラリーの製造方法
Tirronen Applicability of fibrous and size index to characterize microfibrillated cellulose, fiber blends, and paper properties
WO2023209622A1 (en) Dried modified pulp with a certain content of microfibrils and pre-fibrillated fibers
WO2015052380A1 (en) Method for manufacturing a paper, a paper and its use, a furnish and a wood based composition

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201080053197.5

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10832694

Country of ref document: EP

Kind code of ref document: A1

REEP Request for entry into the european phase

Ref document number: 2010832694

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2010832694

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 13511956

Country of ref document: US