WO2016185397A1 - Production de carbonate de calcium précipité de taille nanométrique et utilisation pour améliorer l'assèchement de bandes de fibre - Google Patents

Production de carbonate de calcium précipité de taille nanométrique et utilisation pour améliorer l'assèchement de bandes de fibre Download PDF

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Publication number
WO2016185397A1
WO2016185397A1 PCT/IB2016/052893 IB2016052893W WO2016185397A1 WO 2016185397 A1 WO2016185397 A1 WO 2016185397A1 IB 2016052893 W IB2016052893 W IB 2016052893W WO 2016185397 A1 WO2016185397 A1 WO 2016185397A1
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WIPO (PCT)
Prior art keywords
filler material
microfibrillated
aqueous solution
polysaccharide
less
Prior art date
Application number
PCT/IB2016/052893
Other languages
English (en)
Inventor
Isto Heiskanen
Kaj Backfolk
Original Assignee
Stora Enso Oyj
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stora Enso Oyj filed Critical Stora Enso Oyj
Publication of WO2016185397A1 publication Critical patent/WO2016185397A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2373—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media for obtaining fine bubbles, i.e. bubbles with a size below 100 µm
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/18—Carbonates
    • C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
    • 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
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • 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
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates
    • 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
    • D21H17/63—Inorganic compounds
    • D21H17/70—Inorganic compounds forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately
    • 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
    • D21H21/50—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 form
    • D21H21/52—Additives of definite length or shape
    • D21H21/54—Additives of definite length or shape being spherical, e.g. microcapsules, beads
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • D21C9/007—Modification of pulp properties by mechanical or physical means
    • 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
    • D21H21/06—Paper forming aids
    • D21H21/10—Retention agents or drainage improvers

Definitions

  • the present document relates to a method for producing a high density web or film comprising nanofibrillated polysaccharide, wherein a filler material is introduced comprising nanobubble carbon dioxide as a precursor.
  • MFC films manufactured from nanofibrillated or microfibrillated polysaccharides are known to provide papers or paper boards, polymer coatings or different types of laminated products, having very good oxygen barriers or very low air permeability. MFC films can also provide good grease or fat resistance. Modified MFC or MFC films can also provide some solvent or water vapor resistance. MFC films can also provide aroma barrier in different types of paper or film products. These papers or paperboards are useful in many different applications, for instance in the pharmaceutical or food packaging industry. However, when forming these films or webs in a paper making machine, one drawback or difficulty, is the rate at which the dewatering may take place.
  • films from MFC are either made on plastic films, where the plastic film work as a carrier substrate or the MFC is coated directly on plastic or a paper or paperboard, i.e. a base board, which then act as a base substrate.
  • dewatering can occur in two directions, i.e.
  • a method for producing a film or web in a paper making process comprising the steps of: providing an aqueous solution comprising a microfibrillated polysaccharide, wherein the microfibrillated polysaccharide is any one of a microfibrillated cellulose, nanofibrillated cellulose, fibrillated cellulose fibers and cellulose fibrils or a mixture thereof, having a dry content in the range of from 0.1 to 5.0 weight-%, introducing a filler material into said aqueous solution, wherein the method further comprises the step of forming said filler material directly in the aqueous solution by introducing precursor materials into said solution, whereby said precursor materials react to form the filler material onto or into the fibrils of the microfibrillated polysaccharide; wherein said filler material is formed from gas bubbles from carbon dioxide having a diameter in the range of from 10 to 800 nm.
  • aqueous solution any solution comprising the
  • microfibrillated polysaccharide in the wet end of a paper making machine, e.g. the stock solution.
  • nanobubbles By using carbon dioxide bubbles having a nano size, i.e. nanobubbles, to form the filler material, a nanosized filler, or “nanofiller” material may be obtained.
  • the nanobubble carbon dioxide may also provide for higher reaction efficiency, improved mixing behavior, and a reduced need for gas or other precursors.
  • the formation or introduction of such a nanofiller into or onto the fibrils of the microfibrillated polysaccharide provides a film or web having a high content of microfibrillated polysaccharide, i.e. a dense film or web, which has improved dewatering characteristics.
  • the filler i.e. the nanofiller, forming onto or into the fibrils an inorganic-organic fibril/fiber composite may thus be formed, for which the dewatering process is much faster than compared to a conventionally formed web or film of a microfibrillated polysaccharide.
  • the filler material may be any one of a precipitated calcium carbonate and a precipitated magnesium carbonate, or other metal salt carbonate or a mixture thereof.
  • the filler material may be a precipitated calcium carbonate (PCC).
  • PCC precipitated calcium carbonate
  • the method may further comprise the step of forming said filler material directly in the aqueous solution by.
  • the carbon dioxide bubbles may then be a precursor material.
  • the filler material may according to one embodiment be introduced into the aqueous solution in an in-line process.
  • the filler material By using nanobubbles of carbon dioxide, which stability can be adjusted, to form the filler material it is possible to provide for a very quick introduction and mixing of the filler material, into the aqueous solution through an in-line process.
  • the filler material may be formed directly prior to the introduction into the aqueous solution, and introduced in a continuous manner into the solution, or formed directly into the stream of the paper or board making machine, i.e. directly in the presence of e.g. MFC.
  • the in-line process allows for a very quick formation of the filler material if it is formed by introducing the precursor materials directly into the aqueous solution.
  • the stability of the nanobubble makes it possible to more easily control the mixing and reaction efficiency of the filler and/or filler precursors.
  • the filler material may be prepared or introduced into the aqueous solution in an off-line process or an at-line process.
  • the aqueous solution may thus contain the MFC as defined above.
  • filler material being introduced in an off-line process is meant that the filler material is formed at a location separate from the paper making process, and then transported to the paper making machine for introduction into the process.
  • at-line is meant that the filler material is formed directly in connection to the paper making machine and then introduced into the process. This means that precursor materials are mixed, and thus allowed to react, to form the nanofiller prior to it being introduced in the paper making process.
  • the precursor materials may comprise any one of calcium carbonate (CaCOs), calcium oxide (CaO), calcium hydroxide (Ca(OH)2), calcium bicarbonate (Ca(HC03)2), sodium bicarbonate (NaHCOs), magnesium hydroxide (Mg(OH)2), and magnesium oxide (MgO), or a mixture thereof.
  • CaCOs calcium carbonate
  • CaO calcium oxide
  • Ca(OH)2 calcium hydroxide
  • Ca(HC03)2 calcium bicarbonate
  • NaHCOs sodium bicarbonate
  • Mg(OH)2 magnesium hydroxide
  • MgO magnesium oxide
  • the grammage of the film or web may be less than 100 g/m 2 , or less than 70 g/m 2 , or less than 50 g/m 2 , or less than 30 g/m 2 ' or less than 20 g/m 2 .
  • the amount of filler material in said film or web may, according to one embodiment be less than 20% of the dry content of the microfibrillated polysaccharide, or less than 15% of the dry content of the microfibrillated polysaccharide, or less than 10% of the dry content of the microfibrillated polysaccharide.
  • a film or a web material comprising microfibrillated polysaccharide or microfibrillated cellulose obtained by the method according to the first aspect.
  • a paper or paper board material obtained from a film or web material according the second aspect.
  • This film or web may be an intermediate product, and can be further treated or laminated according to technologies known for a person skilled in the art.
  • fiber webs or fiber films comprising microfibrillated polysaccharides are often used.
  • the end product often has properties such as low air permeability, or good oxygen barrier capabilities.
  • the microfibrillated polysaccharide may be any types of highly fibrillated fibers, such as a microfibrillated cellulose, nanofibrillated cellulose, , and cellulose fibrils or a mixture thereof.
  • Microfibrillated polysaccharide is defined here as including bacterial cellulose or nanocellulose (BNC) spun with either traditional spinning techniques or then with electrostatic spinning. In these cases, the material is preferably a polysaccharide but not limited to solely a polysaccharide. Also cellulose whiskers, or regenerated cellulose is included in this definition.
  • the microfibrillated polysaccharide may also be synthetic biofibers that have been fibrillated or spun into nanosize fibers.
  • microfibrillated polysaccharide can further be mixed together with normal lignocellulose or reinforcing pulps both in low or high amounts. It is further possible to use a purified microfibrillated polysaccharide or a
  • the microfibrillated polysaccharide is a microfibrillated cellulose.
  • the microfibrillated cellulose is also known as nanocellulose. It is a material typically made from wood cellulose fibers, both from hardwood or softwood fibers. It can also be made from microbial sources, agricultural fibers such as wheat straw pulp, esparto (alfa) grass, bagasse (cereal straw, rice straw, bamboo, hemp), kemp fibers, flax and other cellulosic fiber sources. MFC can also be derived from parenchymal cell walls or other non-wood fiber sources.
  • microfibrillated cellulose the individual microfibrils or elementary fibrils have been partly or totally detached from each other.
  • a microfibrillated cellulose fibril is very thin ( ⁇ 2-20 nm) and the length is normally between 100 nm to 10 pm. However, the microfibrils may also be longer, for example between 10-200 pm, but lengths even 2000 pm can be found due to wide length distribution. Fibers that has been fibrillated to a short length and which have microfibrils on the surface and microfibrils that are separated and located in a water phase of a slurry are included in the definition MFC.
  • whiskers are also included in the definition MFC.
  • high density fiber web or film In order to produce the paper or paperboard qualities a high density fiber web or film is usually used.
  • high density or “high concentration” web or film is meant that the dry content of the microfibrillated polysaccharide is in the range of from 0.5 to 5 weight-% of an aqueous solution in which the microfibrillated polysaccharide is dissolved. According to one embodiment the dry content is in the range of from 2 to 5 weight-%. According to another embodiment the dry content is in the range of from 3 to 5 weight-%.
  • the aqueous solution may be a stock solution in the paper making process. The stock solution may also comprise other fibers, additives and paper chemicals.
  • Fillers are materials which are used in the paper making process to confer different types of qualities to the paper or paper board. They may also be used, for instance, simply to provide for a cheaper product or pigmentation of the product. Many different types of fillers may be used, depending on the desired end product, and one of the most common filler materials used in the paper making process is precipitated metal carbonates, such as precipitated calcium carbonate or precipitated magnesium carbonate, or other types of carbonates based on primarily alkaline earth metals. The filler material may also be a mixture of different metal carbonates.
  • PCC precipitated calcium carbonate
  • the slaked lime is then combined with carbon dioxide gas and calcium carbonate reforms, and since it is insoluble in water, it precipitates out.
  • CaCO3 may also be formed from salts, such as CaCI2 and sodium bicarbonate.
  • gypsum for example CaSO 2 x 2 H 2 O
  • Gypsum may be used as a source of Ca ions.
  • Gypsum is often used as filler, however it has a high dissolution in water (about 2- 2,5 g/l at 25C), most of the dissolved Ca ions could be regained via CO 2 addition.
  • this can either be done off-line, i.e. the precursor materials, e.g. the slaked lime and carbon dioxide can be combined to produce the PCC at a facility which is separate from the paper making process.
  • the precursor materials e.g. the slaked lime and carbon dioxide
  • This can also be done "at-line” which means that the filler material is produced in direct connection to the paper making process, i.e. no
  • the production may also be an "in-line production or process" which means that the precipitated calcium carbonate is produced directly into the flow of the paper making stock, i.e. the captured carbon dioxide is combined with slaked lime milk inline, instead of being produced separately from the paper making process.
  • PCC Separate production of PCC further requires the use of retention chemicals to have the PCC adsorbed or fixed onto the fibers.
  • An in-line PCC process is generally recognized as providing a clean paper machine system, and there is a reduced need of retention chemicals.
  • An in-line PCC process is for instance disclosed in WO201 1/1 10744.
  • the precursor materials may comprise other metal hydroxides, such as magnesium hydroxide in order to form a precipitated magnesium carbonate, or any other suitable metal hydroxide which can be precipitated in the presence of carbon dioxide to form a carbonate.
  • fly ash comprising high amount of CaO or MgO can be used.
  • Carbon dioxide is thus one of the most common precursors of filler materials, such as PCC.
  • the carbon dioxide is introduced in the form of microsized or nanoszied gas bubbles or so called nanobubbles. These bubbles may also be called microbubbles.
  • the nanobubbles may have a diameter in the range of from 10 to 800 nanometers (nm). According to one embodiment the nanobubbles may have a diameter in the range of from 10 to 600 nm. According to another embodiment the nanobubbles may have a diameter in the range of from 10 to 400 nm. According to yet an alternative embodiment the nanobubbles may have a diameter in the range of from 10 to 100 nm. According to one alternative the gas bubbles may have different size distributions, i.e. there is a mixture of bubbles having different sizes or diameters. This means that a main part of the bubbles may have a diameter in the range of 10 to 400 nm, but there may be bubbles having a larger diameter present in the mixture.
  • the micro or nanobubbles are quite stable, which may provide for an improved or increased mixing and reaction efficiency when forming the filler material by providing the carbon dioxide precursor in the form of
  • the filler material formed by introducing these nanobubbles will also be of micro or nanosized particles, that is a nanofiller material is formed, e.g. a nano-PCC.
  • a nanofiller material e.g. a nano-PCC.
  • the diameter of these nanofiller particles may be in the range of from 100 to 1000 nm.
  • the formed nanofiller due to its small size, also can be more easily mixed into the high density or high concentration solution comprising the nanofibrillated polysaccharide.
  • the filler material may be produced at sub or super critical conditions, for instance at high pressure or high temperature, or combination of both.
  • the filler material may be further surface modified, for instance by adding chemicals such as dispersants, coupling agents, flame retardants, binders, hydrophobic chemicals, etc.
  • nanofiller or alternatively the precursors forming the nanofiller, into the high density solution of nanofibrillated polysaccharide has shown to provide for a paper making process in which the web or film may be more easily dewatered, i.e. has a higher dewatering rate.
  • the amount of filler material i.e. the nanofiller material, is less than 20% of the dry content of the microfibrillated polysaccharide, or less than 15% of the dry content of the microfibrillated polysaccharide, or less than 10% of the dry content of the microfibrillated polysaccharide.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Paper (AREA)

Abstract

La présente invention concerne un procédé pour la production d'un film ou d'une bande dans un processus de fabrication de papier, ledit procédé comprenant les étapes suivantes: la fourniture d'une solution aqueuse comportant un polysaccharide microfibrillé, le polysaccharide microfibrillé étant l'une quelconque parmi une cellulose microfibrillée, une cellulose nanofibrillée, et des fibrilles de cellulose ou un mélange de celles-ci, ayant une teneur en matière sèche comprise entre 0,1 et 5,0 % en poids; l'introduction d'un matériau de remplissage dans ladite solution aqueuse, le procédé comprenant en outre l'étape de formation dudit matériau de remplissage directement dans la solution aqueuse par l'introduction de matériaux précurseurs dans ladite solution, entraînant la réaction desdits matériaux précurseurs pour former le matériau de remplissage sur ou dans les fibrilles du polysaccharide microfibrillé; ledit matériau de remplissage étant formé à partir de bulles de gaz de dioxyde de carbone ayant un diamètre compris entre 10 et 800 nm.
PCT/IB2016/052893 2015-05-21 2016-05-18 Production de carbonate de calcium précipité de taille nanométrique et utilisation pour améliorer l'assèchement de bandes de fibre WO2016185397A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1550647A SE1550647A1 (en) 2015-05-21 2015-05-21 Production of nanosized precipitated calcium carbonate and use in improving dewatering of fiber webs
SE1550647-0 2015-05-21

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WO2016185397A1 true WO2016185397A1 (fr) 2016-11-24

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018158676A1 (fr) 2017-03-01 2018-09-07 Stora Enso Oyj Processus pour la production d'un film comprenant de la cellulose microfibrillée et des nanoparticules
EP3436635A4 (fr) * 2016-04-01 2019-09-18 Stora Enso Oyj Processus pour la production d'un film comprenant de la cellulose microfibrillée
WO2020075050A1 (fr) 2018-10-10 2020-04-16 Raiz - Instituto De Investigação Da Floresta E Papel Flocons de charges combinés à des micro et nanofibrilles de cellulose pour une utilisation dans la production de produits en papier à propriétés améliorées
CN111492107A (zh) * 2017-12-21 2020-08-04 斯道拉恩索公司 具有氧气阻隔性质的层压件及其生产方法
CN113106775A (zh) * 2020-01-10 2021-07-13 中国制浆造纸研究院有限公司 一种采用微纤化纤维改善抄纸滤水性能的方法
CN114212814A (zh) * 2021-12-16 2022-03-22 浙江大学 一种纳米碳酸钙的制备方法
EP3805454A4 (fr) * 2018-05-28 2022-04-06 Klabin S.A. Papier et procédé de fabrication de papier utilisant de la cellulose microfibrillée dans la pulpe de cellulose

Citations (2)

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Publication number Priority date Publication date Assignee Title
WO2011110744A2 (fr) 2010-03-10 2011-09-15 Upm-Kymmene Corporation Procédé et réacteur pour la production en ligne de carbonate de calcium dans le procédé de production d'un voile fibreux
WO2014072912A1 (fr) 2012-11-09 2014-05-15 Stora Enso Oyj Jet pour un carton provenant d'un procédé de production en ligne

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011110744A2 (fr) 2010-03-10 2011-09-15 Upm-Kymmene Corporation Procédé et réacteur pour la production en ligne de carbonate de calcium dans le procédé de production d'un voile fibreux
WO2014072912A1 (fr) 2012-11-09 2014-05-15 Stora Enso Oyj Jet pour un carton provenant d'un procédé de production en ligne

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11319671B2 (en) 2016-04-01 2022-05-03 Stora Enso Oyj Process for production of film comprising microfibrillated cellulose
EP3436635A4 (fr) * 2016-04-01 2019-09-18 Stora Enso Oyj Processus pour la production d'un film comprenant de la cellulose microfibrillée
US11192987B2 (en) 2017-03-01 2021-12-07 Stora Enso Oyj Process for production of film comprising microfibrillated cellulose and nanoparticles
EP3589685A4 (fr) * 2017-03-01 2020-11-25 Stora Enso Oyj Processus pour la production d'un film comprenant de la cellulose microfibrillée et des nanoparticules
WO2018158676A1 (fr) 2017-03-01 2018-09-07 Stora Enso Oyj Processus pour la production d'un film comprenant de la cellulose microfibrillée et des nanoparticules
CN111492107A (zh) * 2017-12-21 2020-08-04 斯道拉恩索公司 具有氧气阻隔性质的层压件及其生产方法
US11346057B2 (en) 2017-12-21 2022-05-31 Stora Enso Oyj Laminate having oxygen barrier properties and a method for producing the same
CN111492107B (zh) * 2017-12-21 2022-10-14 斯道拉恩索公司 具有氧气阻隔性质的层压件及其生产方法
EP3805454A4 (fr) * 2018-05-28 2022-04-06 Klabin S.A. Papier et procédé de fabrication de papier utilisant de la cellulose microfibrillée dans la pulpe de cellulose
WO2020075050A1 (fr) 2018-10-10 2020-04-16 Raiz - Instituto De Investigação Da Floresta E Papel Flocons de charges combinés à des micro et nanofibrilles de cellulose pour une utilisation dans la production de produits en papier à propriétés améliorées
CN113106775A (zh) * 2020-01-10 2021-07-13 中国制浆造纸研究院有限公司 一种采用微纤化纤维改善抄纸滤水性能的方法
CN113106775B (zh) * 2020-01-10 2023-05-12 中国制浆造纸研究院有限公司 一种采用微纤化纤维改善抄纸滤水性能的方法
CN114212814A (zh) * 2021-12-16 2022-03-22 浙江大学 一种纳米碳酸钙的制备方法

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