US20070131361A1 - Method for charging a fiber suspension, and arrangement for carrying out said method - Google Patents

Method for charging a fiber suspension, and arrangement for carrying out said method Download PDF

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Publication number
US20070131361A1
US20070131361A1 US10/566,046 US56604604A US2007131361A1 US 20070131361 A1 US20070131361 A1 US 20070131361A1 US 56604604 A US56604604 A US 56604604A US 2007131361 A1 US2007131361 A1 US 2007131361A1
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United States
Prior art keywords
approximately
fibrous stock
stock suspension
paper
fibrous
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.)
Abandoned
Application number
US10/566,046
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English (en)
Inventor
Klaus Doelle
Oliver Luedtke
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.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
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 Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Assigned to VOITH PAPER PATENT GMBH reassignment VOITH PAPER PATENT GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DOELLE, KLAUS, LUEDTKE, OLIVER
Publication of US20070131361A1 publication Critical patent/US20070131361A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical 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
    • 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
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
    • D21H23/06—Controlling the addition
    • D21H23/14—Controlling the addition by selecting point of addition or time of contact between components
    • D21H23/16—Addition before or during pulp beating or refining

Definitions

  • the present invention relates to loading of a fibrous stock suspension with calcium carbonate.
  • cigarette paper, cardboard and all types of packaging papers, all types of Kraft sack paper and papers containing fillers can be produced.
  • Cigarette paper is normally produced from linen or hemp fibers, cotton, sulfate pulp, paper machine broke, as well as from other fiber sources.
  • the filler content in cigarette paper is between 5% and 40%, whereby 30% is considered as a standard value.
  • Packaging papers and cardboards can be divided into three categories: Container board for packaging purposes, container board for applications in the field of consumer packaging and specialized papers such as wallpaper, book spines, etc.
  • Packaging papers are normally produced as multi-ply products having basis weights higher than 150 g/m 2 . The freeness varies from 600 to 50 CSF or 20 to 80° SR, relative to the produced end product.
  • Kraft sack papers require a high porosity and a high mechanical strength in order to meet the high demands that occur such as rough handling during the filling process and the duration of their use, as is the case, for example, with cement bags.
  • the paper must be strong enough to absorb impacts and must have an accordingly high energy absorption capacity.
  • the sack paper must also be porous and sufficiently air permeable in order to facilitate effortless filling.
  • Sack papers are produced, for example, from a long fibered Kraft pulp into product having a basis weight of between 70 and 80 g/m 2 , and having a freeness of between 600 to 425 CSF or 20 to 30° SR. In addition, a medium freeness, as described above is strived for.
  • the result of the high consistency refining is good adhesion of the fibers to each other as well as a high porosity.
  • the sack paper is predominantly produced from bleached and unbleached fibers, whereby a filler content of 5% to 15% may be present in the produced sack paper.
  • Filter paper requires a high controlled porosity and pore distribution. It must have a sufficiently high mechanical strength to counteract the flow of the medium that is to be filtered. Filter paper is produced, with a basis weight of 12 to 1200 g/m 2 . For example, an air filter would
  • All filters are produced from a multitude of fibers, such as chemical pulp fibers, bleached and unbleached fibers, Kraft pulp, DIP (deinked) paper, recycled fibers, TMP (thermo mechanical) paper, etc.
  • the present invention provides a method including the following process steps:
  • the current invention describes a method for the production of fiber loaded precipitated calcium carbonate (FLPCC) and to simultaneously undergo a refining process.
  • the fiber raw material that is to be loaded may consist of recycling paper, DIP (deinked paper), secondary fibers, bleached or unbleached pulp, mechanical pulp, bleached or unbleached sulfate pulp, broke, linen, cotton, and/or hemp fibers (predominantly cigarette paper) and/or any paper raw material that can be utilized on a paper machine, irrespective of whether or not the end product contains a filler that was produced by a precipitation process in batch reactors or by a refining process, or whether talcum, titanium dioxide (TiO 2 ), silicon, etc. are used.
  • the fiber loading technology permits precipitation of a filler, especially calcium carbonate, that is uniformly distributed and adhered to, in and between the paper fibers directly in the stock preparation of a paper mill. It also allows the treated fibrous stock to undergo a fiber treatment in a refiner simultaneously with the precipitation process.
  • the filler material utilized according to the current state of the art is replaced with the filler material produced according to the fiber loading combination process technology.
  • the range of application of the filler produced with the fiber loading combination process technology extends to applications within the paper production of all paper grades, including cigarette papers, filter papers, Kraft sack paper grades, cardboard and packaging papers that have a filler content of between 1% and 60% and/or a white liner having a filler content of between 1% and 60%.
  • the loaded and produced paper grades can be produced on a paper machine from a recycling paper, deinked paper (DIP), secondary fibers, bleached or unbleached pulp, mechanical pulp, bleached or unbleached sulfate pulp, broke, linen, cotton, and/or hemp fibers (predominantly for cigarette paper) and/or any paper raw material, irrespective of whether or not the end product contains a filler.
  • DIP deinked paper
  • secondary fibers bleached or unbleached pulp
  • mechanical pulp bleached or unbleached sulfate pulp
  • broke linen, cotton, and/or hemp fibers (predominantly for cigarette paper) and/or any paper raw material, irrespective of whether or not the end product contains a filler.
  • Fibrous stock produced with the fiber loading combination process technology generally possesses a superior dewatering characteristic as compared to a fibrous stock produced according to another method.
  • the improvement in the dewatering capacity is between 5 to 100 ml CSF or 0.2 to 15° SR, depending upon the required freeness.
  • the stock or pulp produced according to the fiber loading process further possesses a low water retention value of 2 to 25%, depending upon the raw material that is used in production.
  • the exposed filler can be removed by way of an additionally provided washing process prior to the refining process, following the refining process, after running through the headbox vat or prior to feeding into the paper machine.
  • the fibers themselves will still contain filler, inside and out so that the positive effects of the fiber loading technology can be taken advantage of.
  • the fiber loading technology may be utilized, prior to, or after, the refining process, depending on what requirements are put upon the end product.
  • cigarette papers having 100 to 25 CSF or 68 to 90° SR FL B&P papers having 600 to 50 CSF or 20 to 80° SR, FL sack papers having 600 to 425 CSF or 20 to 30° SR and FL filter papers having 600 to 350 CSF or 20 to 35° SR.
  • More effective drying to a residual moisture content of 1 to 20% permits an increase in efficiency for all paper grades.
  • a higher water retention capacity, i.e. 1 to 25% results in a positive influence upon remoistening, which is lower in the manufacturing process, as well as upon the printability of the produced web.
  • An additional advantage for all paper grades is the greater brightness or the higher optical values of around 15 or more lightness points, which is to be emphasized in the production of all grades of paper and cardboard, with or without a white liner.
  • the optical values for example in cigarette papers, are also improved by up to 10 lightness points.
  • FIG. 1 schematically illustrates an embodiment of the elements and flow of the method of the present invention.
  • aqueous fibrous stock material especially aqueous paper stock, having a consistency of 0.1 to 20%, preferably between 2 and 15% is used as primary a raw material.
  • calcium hydroxide is mixed as the preferred filler into the aqueous fiber stock material, especially into the paper fiber stock, whereby this has a solids content of between 0.01 and 60%.
  • utilization of a source material, other than calcium hydroxide or calcium oxide, for the formation of the filler is also feasible.
  • the calcium hydroxide is added through a static mixer or an intermediate vat.
  • the carbon dioxide is preferably added into a moist fibrous stock suspension having a consistency of 0.1 to 15%, according to the reaction parameters. Calcium carbonate is precipitated in a carbon dioxide gaseous atmosphere.
  • the refining process is carried out simultaneously with the fiber loading process in an apparatus known as the crystallizer; a refining energy in the range of between 0.1 and 300 kWh/ton dry paper pulp is applied; a short reaction time of the calcium hydroxide and the carbon dioxide is important in this context.
  • the energy supply or heat volume, or heating of the paper suspension for the production of crystals in various forms is important for the present invention.
  • aqueous paper stock with a paper content of between 0.01 and 60% is used as the primary raw material.
  • An advantageous embodiment of the method of the present invention provides that a refiner, a disperger and/or a fluffer FLPCC reactor are utilized as a reactor and/or a static mixer.
  • the fibrous stock content, especially the paper content used therein is between 0.01 and 15% in the instance of a static mixer; at between 2 and 40% in the instance of a refiner and a disperger and between 15 and 60% in the instance of a fluffer-FLPCC-reactor.
  • the current invention provides that the dilution water is supplied prior to, during, or after, the addition of carbon dioxide, calcium hydroxide or calcium oxide.
  • Calcium carbonate precipitates when adding carbon dioxide into a calcium hydroxide solution or suspension.
  • the precipitative reaction also occurs, when calcium hydroxide is added to water under a carbon dioxide atmosphere.
  • Diluting water may be added prior to, during, or after, the addition of carbon dioxide or calcium hydroxide.
  • An expenditure of energy of between 0.3 and 8 kWh/t, especially between 0.5 and 4 kWh/t is preferably used for the precipitation reaction.
  • the process temperature is between ⁇ 15° C. and 120° C., especially between 20° C. and 90° C.
  • rhombohedral, scalenohedron and spherical crystals can be formed.
  • the crystals measure between 0.05 and 5 ⁇ m, especially between 0.3 and 2.5 ⁇ m.
  • Static and/or moving, especially rotating mixing elements may be utilized.
  • the process is carried out in a pressure range of between 0 and 15 bar, preferably between 0 and 6 bar.
  • the pH value is between 6 and 10, preferably between 6.5 and 9.5.
  • the reaction time is advantageously between 0.01 minutes and 1 minute, especially between 0.05 seconds and 10 seconds.
  • FIG. 1 illustrates a schematic view of an apparatus for loading of a fibrous stock suspension.
  • the suspension is transported in a device 1 in a pipe line system that is equipped with control valves 10 and 12 .
  • Control valve 10 is located in a line 14 through which the piping system is connected to a static mixer 16 .
  • Diluting water can be fed to static mixer 16 by way of a valve 18 .
  • the addition of a suspension of calcium hydroxide is controlled by way of an additional valve 22 that is installed in a line 20 .
  • This is supplied by a preparation apparatus 24 , where solid calcium oxide or calcium hydroxide is fed into water.
  • water is supplied to preparation apparatus 24 by way of a line that is equipped with a valve 26 .
  • the suspension produced in preparation apparatus 24 is passed into line 20 by a pump 28 .
  • the calcium hydroxide may also be added from a header tank.
  • Line 50 is connected by way of an additional valve 58 with a static mixer 60 whose purpose it is to add additional carbon dioxide to the fibrous stock suspension flowing from disperger 42 through line 64 which is equipped with valve 62 .
  • Fibrous stock suspension that is not treated with calcium hydroxide can additionally be fed into blend chest 68 by way of the 12 and line 70 .
  • the fibrous stock suspension flows from static mixer 60 into blend chest 68 , which is equipped with a rotor 66 for the purpose of thoroughly mixing the fibrous stock suspension. From blend chest 68 the fibrous stock suspension flows either immediately to a headbox in a paper machine, or it is subjected to additional mechanical processing, for example in a refiner feed chest.
  • a refiner 80 can be installed in the piping system for the purpose of improving the fibrous stock suspension through an additional refining process.
  • Refiner 80 is supplied with fibrous stock suspension by way of a line 82 that branches off of line 30 . From refiner 80 the repeatedly refined fibrous stock suspension is brought through line 84 into line 64 and from there, as described above, into blend chest 68 .
  • the inventive design of the present invention includes loading of a fibrous stock suspension with calcium carbonate that has the advantage, when compared with devices according to the current state of the art, in that machinery for homogenizing of the fibrous stock suspension, such as a screw press, and a conditioning machine for homogenizing of the fibrous suspension (equalizing reactor) is not required.
  • Refiner 80 having a container/vessel additionally takes over the refining process, providing a considerably simpler arrangement of stock preparation compared to the current state of the art. This refining process serves at the same time as an agitation process, in order to deposit the calcium carbonate in the fibers through a shear process.
  • calcium hydroxide (lime hydrate, lime milk) is used, which has a solubility in water at 20° C. of 1.65 g/l to 0.7 g/l at 100° C.
  • a pH value of up to 12.6 is achieved, depending upon how closely the concentration of the solution reaches the maximum value.
  • solids contents of 0 to 60% can be realized, whereby the suspension has a pH-value of 12.6 maximum.
  • the actual volume of lime hydrate in the suspension therefore includes the dissolved component as well as the solids concentration.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
US10/566,046 2003-08-05 2004-08-03 Method for charging a fiber suspension, and arrangement for carrying out said method Abandoned US20070131361A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10335751A DE10335751A1 (de) 2003-08-05 2003-08-05 Verfahren zum Beladen einer Faserstoffsuspension und Anordnung zur Durchführung des Verfahrens
DE10335751.3 2003-08-05
PCT/EP2004/051701 WO2005014934A2 (fr) 2003-08-05 2004-08-03 Procede pour introduire une charge dans une suspension de matiere fibreuse et dispositif pour la mise en oeuvre dudit procede

Publications (1)

Publication Number Publication Date
US20070131361A1 true US20070131361A1 (en) 2007-06-14

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US10/566,046 Abandoned US20070131361A1 (en) 2003-08-05 2004-08-03 Method for charging a fiber suspension, and arrangement for carrying out said method

Country Status (7)

Country Link
US (1) US20070131361A1 (fr)
EP (1) EP1654420A2 (fr)
JP (1) JP2007501337A (fr)
CN (1) CN1823197A (fr)
BR (1) BRPI0413337A (fr)
DE (1) DE10335751A1 (fr)
WO (1) WO2005014934A2 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060113051A1 (en) * 2003-01-24 2006-06-01 Voith Paper Patent Gmbh Method for creating a fibrous substance suspension used for producing a tissue web or hygiene web
US20070062652A1 (en) * 2003-12-09 2007-03-22 Voith Paper Patent Gmbh Method for charging a fibre suspension and arrangement for carrying out said method
WO2010077172A1 (fr) * 2008-12-29 2010-07-08 Limited Liability Company "Prof Business" Procédé pour le prétraitement de matière première de bois pour saccharification, système et produit
US8231764B2 (en) 2009-05-15 2012-07-31 Imerys Minerals, Limited Paper filler method
US20130112360A1 (en) * 2010-06-03 2013-05-09 Nordkalk Oy Ab Process for manufacturing paper or board
US9051689B2 (en) 2010-08-20 2015-06-09 Upm-Kymmene Corporation Method for precipitating calcium carbonate
US10053817B2 (en) 2010-04-27 2018-08-21 Fiberlean Technologies Limited Process for the manufacture of structured materials using nano-fibrillar cellulose gels
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
US10577469B2 (en) 2015-10-14 2020-03-03 Fiberlean Technologies Limited 3D-formable sheet material
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
US20210123189A1 (en) * 2018-04-04 2021-04-29 Delfortgroup Ag Improved Filter Paper
US11155697B2 (en) 2010-04-27 2021-10-26 Fiberlean Technologies Limited Process for the production of gel-based composite materials
US11846072B2 (en) 2016-04-05 2023-12-19 Fiberlean Technologies Limited Process of making paper and paperboard products

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Publication number Priority date Publication date Assignee Title
DE102007051665A1 (de) * 2007-10-30 2009-05-07 Voith Patent Gmbh Verfahren zur Bildung von Calciumcarbonat in einer Faserstoffsuspension
DE102007051664A1 (de) * 2007-10-30 2009-05-07 Voith Patent Gmbh Verfahren zur Bildung von Calciumcarbonat in einer Faserstoffsuspension II
CN106894281B (zh) * 2015-12-17 2019-03-22 上海东升新材料有限公司 一种造纸用轻钙包覆纤维填料及其制备方法和应用

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US20070062652A1 (en) * 2003-12-09 2007-03-22 Voith Paper Patent Gmbh Method for charging a fibre suspension and arrangement for carrying out said method
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US4943349A (en) * 1980-10-21 1990-07-24 Papeteries De Gascogne Process for preparing a sheet material with improved on-machine retention
US5223090A (en) * 1991-03-06 1993-06-29 The United States Of America As Represented By The Secretary Of Agriculture Method for fiber loading a chemical compound
US5478441A (en) * 1992-06-17 1995-12-26 The Wiggins Teape Group Limited Recovery and re-use of raw materials from paper mill waste sludge
US20020088566A1 (en) * 2000-02-24 2002-07-11 Voith Sulzer Paper Technology North America, Inc. Method of chemically loading fibers in a fiber suspension
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US20070062652A1 (en) * 2003-12-09 2007-03-22 Voith Paper Patent Gmbh Method for charging a fibre suspension and arrangement for carrying out said method
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Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060113051A1 (en) * 2003-01-24 2006-06-01 Voith Paper Patent Gmbh Method for creating a fibrous substance suspension used for producing a tissue web or hygiene web
US20070062652A1 (en) * 2003-12-09 2007-03-22 Voith Paper Patent Gmbh Method for charging a fibre suspension and arrangement for carrying out said method
WO2010077172A1 (fr) * 2008-12-29 2010-07-08 Limited Liability Company "Prof Business" Procédé pour le prétraitement de matière première de bois pour saccharification, système et produit
US10294371B2 (en) 2009-03-30 2019-05-21 Fiberlean Technologies Limited Process for the production of nano-fibrillar cellulose gels
US10975242B2 (en) 2009-03-30 2021-04-13 Fiberlean Technologies Limited Process for the production of nano-fibrillar cellulose gels
US10982387B2 (en) 2009-03-30 2021-04-20 Fiberlean Technologies Limited Process for the production of nano-fibrillar cellulose suspensions
US10301774B2 (en) 2009-03-30 2019-05-28 Fiberlean Technologies Limited Process for the production of nano-fibrillar cellulose suspensions
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
US11162219B2 (en) 2009-05-15 2021-11-02 Fiberlean Technologies Limited Paper filler composition
US10100464B2 (en) 2009-05-15 2018-10-16 Fiberlean Technologies Limited Paper filler composition
US11732411B2 (en) 2009-05-15 2023-08-22 Fiberlean Technologies Limited Paper filler composition
US11970817B2 (en) 2009-05-15 2024-04-30 Fiberlean Technologies Limited Paper filler composition
US8231764B2 (en) 2009-05-15 2012-07-31 Imerys Minerals, Limited Paper filler method
US10053817B2 (en) 2010-04-27 2018-08-21 Fiberlean Technologies Limited Process for the manufacture of structured materials using nano-fibrillar cellulose gels
US10633796B2 (en) 2010-04-27 2020-04-28 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
US10100467B2 (en) 2010-04-27 2018-10-16 Fiberlean Technologies Limited Process for the manufacture of structured materials using nano-fibrillar cellulose gels
US20130112360A1 (en) * 2010-06-03 2013-05-09 Nordkalk Oy Ab Process for manufacturing paper or board
US8758566B2 (en) * 2010-06-03 2014-06-24 Nordkalk Oy Ab Process for manufacturing paper or board
US9051689B2 (en) 2010-08-20 2015-06-09 Upm-Kymmene Corporation Method for precipitating calcium carbonate
US10253457B2 (en) 2010-11-15 2019-04-09 Fiberlean Technologies Limited Compositions
US11655594B2 (en) 2010-11-15 2023-05-23 Fiberlean Technologies Limited Compositions
US11136721B2 (en) 2010-11-15 2021-10-05 Fiberlean Technologies Limited Compositions
US11384210B2 (en) 2015-10-14 2022-07-12 Fiberlean Technologies Limited 3-D formable sheet material
US11932740B2 (en) 2015-10-14 2024-03-19 Fiberlean Technologies Limited 3D-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
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
US11846072B2 (en) 2016-04-05 2023-12-19 Fiberlean Technologies Limited Process of making paper and paperboard products
US10801162B2 (en) 2016-04-05 2020-10-13 Fiberlean Technologies Limited Paper and paperboard products
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
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
US20210123189A1 (en) * 2018-04-04 2021-04-29 Delfortgroup Ag Improved Filter Paper

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CN1823197A (zh) 2006-08-23
WO2005014934A3 (fr) 2005-06-09
DE10335751A1 (de) 2005-03-03
JP2007501337A (ja) 2007-01-25
BRPI0413337A (pt) 2006-10-10
WO2005014934A2 (fr) 2005-02-17
EP1654420A2 (fr) 2006-05-10

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