WO2002090652A1 - Fibrous web and process for the preparation thereof - Google Patents
Fibrous web and process for the preparation thereof Download PDFInfo
- Publication number
- WO2002090652A1 WO2002090652A1 PCT/FI2002/000344 FI0200344W WO02090652A1 WO 2002090652 A1 WO2002090652 A1 WO 2002090652A1 FI 0200344 W FI0200344 W FI 0200344W WO 02090652 A1 WO02090652 A1 WO 02090652A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filler
- fibrils
- fiber
- fiber web
- web
- Prior art date
Links
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
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
-
- 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
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
-
- 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
-
- 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
Definitions
- the present invention relates to the fiber web according to the preamble of Claim 1.
- a fiber web such as this in general comprises a filler-containing base web possibly coated with a pigment-containing coating layer.
- the invention also relates to the method according to the preamble of Claim 17 for the preparation of a fiber web.
- the slush in papermaking is made up of cellulose fibers or lignocellulose fibers, fines and fillers. Many of these components, in particular fillers, are so small in size that they will not adhere mechanically to the wire and they have to be bound to larger fibers or to each other by flocculation.
- retention chemicals which are added to the slush before the forming of the web. Retention chemicals to be mentioned include polymeric products such as polyethylene imine, low molar mass polyacrylamide and poly- amine, as well as cationic starch, guar or polyacrylamine combined with colloidal silica, alumina or montmorillonite.
- the amount of retention chemicals is in general at least 0.5 % of the dry matter of the fiber, typically approx. 0.6 - 1 % of the dry matter of the fiber.
- the invention is based on the observation that the amount of conventional retention agents can be reduced significantly by replacing at least a portion of the conventional mineral fillers, i.e. pulverous mineral pigments, with a composite pigment containing light- scattering material particles deposited on the surface of the fines.
- a filler product of this type is known from FI patent publication 100729.
- the product comprises strings of pearls made up of calcium carbonate particles deposited on the fines and of fine fibrils.
- this filler of a novel type that calcium carbonate is deposited on fine fibrils prepared from cellulose fibers and/or mechanical pulp fibers by beating.
- the size distribution of the fines fraction mainly corresponds to wire screen fraction PI 00.
- 10 - 100 % of the filler in the base web is made up of cellulose fibrils or lignocellulose fibrils on which there are deposited light-scattering material particles, and these coated cellulose or lignocellulose fibrils constitute at maximum approx. 70 % of the weight of the base web.
- the fiber web according to the invention is characterized in what is stated in the characterizing part of Claim 1.
- the method according to the invention for the preparation of a fiber web is for its part characterized in what is stated in the characterizing part of Claim 17.
- the invention provides considerable advantages.
- paper of uniform quality as well as a high level of formation and high retention can be produced; additionally the circulation waters are substantially cleaner and the retention agent requirement is reduced.
- the invention does not require any flocculation of the filler, contrary to the commercially available retention systems; this has a fundamental effect on formation and the optical effect of the filler.
- the base web does not contain any conventional retention agents, or their amount is over 20 % smaller, preferably up to 50 % smaller, than that of a web that has the same level of formation and contains conventional particulate fillers.
- the option according to the invention therefore decreases the chemicals costs in the preparation of a fiber web and facilitates the recycling of waters in a paper or board machine.
- the said reduction of 20 % can thus be calculated separately from one of the components or from both components in total.
- Example 3 the amount of the polymer component has been reduced by slightly less than 30 % by weight while the quantity of nanoparticles has remained unchanged.
- Figure 1 shows, of the results of Example 2, the web formation as a function of the total retention
- Figure 2 shows the formation as a function of the wire water consistency.
- the filler used contains a fines fraction comprising fibrils obtained from a chemical pulp.
- chemical pulp is meant in this context a pulp that has been treated with digestion chemicals for the delignification of cellulose fibers.
- the fibrils used in the invention are fibrils obtained by beating from pulps prepared by the sulfate process and by other alkaline processes.
- the invention is also suited for fillers produced from fibrils obtained from chemimechanical and mechanical pulps.
- the average thickness of cellulose or lignoellulose fibrils is smaller than 1 ⁇ m.
- the fibrils are characterized by one or both of the following criteria: a. they correspond to a fraction which passes a 50 mesh screen; b. their average thickness is 0.01 - 10 ⁇ m (most suitably at maximum 5 ⁇ m) and their average length is 10 - 1500 ⁇ m.
- the source material for the fibrils i.e. the fines based on cellulose or other fibers, is fibril- lated by beating in a pulp refiner.
- the desired fraction may, when necessary, be separated using a screen, but the fines need not always be screened.
- Suitable fibril fractions include wire screen fractions P50 - P400.
- refiners with grooved blades are used.
- the light-scattering material particles in the filler are inorganic or organic salts which can be formed from their source materials by precipitation in an aqueous medium.
- Such compounds include calcium carbonate, calcium oxalate, calcium sulfate, barium sulfate, and mixtures thereof.
- the material particles are precipitated on the fibrils in order to produce an aggregate resembling a string-of-pearls.
- the amount of the inorganic salt compound is approx. 0.0001 - 95 % by weight, preferably approx. 0.1 - 90 % by weight, most suitably approx. 60 - 80 % by weight, calculated from the amount of filler, and approx. 0.1 - 60 % by weight, preferably approx. 0.5 - 50 % by weight of the paper.
- the filler is prepared by depositing the mineral pigment on the surface of fine fibrils prepared from cellulose fibers and/or mechanical pulp fibers.
- the precipitation of calcium carbonate can be carried out by feeding into an aqueous slush of fibrils an aqueous calcium hydroxide mixture, which possibly contains solid calcium hydroxide, and a compound that contains carbonate ions and is at least partly dissolved in water. It is also possible to introduce carbon dioxide gas into the aqueous phase, which gas in the presence of calcium hydroxide produces calcium carbonate.
- string-of-pearls-like calcium carbonate crystal aggregates which are held together by fibrils, i.e. fine strands, and in which the calcium carbonate particles are deposited onto the fine fibrils and attached to them.
- the diameter of the calcium carbonate particles in the aggregates is approx. 0.1 - 5 ⁇ m, typically approx. 0.2 - 3 ⁇ m.
- fibrils corresponding in the main (at least more than 55 %) to wire screen fractions P50 - P400 are used.
- the paper pulp is slushed in a manner known per se to a suitable consistency (typically a solids content of approx. 0.1 - 1 %) and is spread onto the wire.
- a suitable consistency typically a solids content of approx. 0.1 - 1 %) and is spread onto the wire.
- the above-mentioned filler usually in an amount of approx. 1 - 100 % by weight of the weight of the fibers in the fiber pulp, in other words the amount of filler may be up to equal to the amount of the actual fiber pulp.
- the disclosed filler constitutes at least 5 % by weight, most suitably 10 - 100 % by weight, of the filler in the base web, and respectively 10 - 50 % by weight of the fiber material in the base web.
- a base web in which the fiber material in its entirety is made up of filler fibrils, and thus in general the present filler may constitute 1 - 100 % by weight of the fiber material in the base web.
- coated cellulose fibrils or lignocellulose fibrils constitute at maximum approx. 70 %, e.g. approx. 10 - 65 %, of the weight of the base web, in which case the rest of the web comprises conventional mechanical and/or chemical pulp used in papermaking and/or conventional fillers and/or other additives.
- a portion (at maximum 95 %, usually 90 - 10 % by weight, of the total amount of filler) of the filler used in the slush may consist of conventional fillers, such as calcium carbonate (natural or precipitated), kaolin, talc, hydrogenated aluminum oxides (aluminum trihydrox- ides), calcium sulfate, barium sulfate, calcium oxalate, or titanium dioxide.
- conventional fillers such as calcium carbonate (natural or precipitated), kaolin, talc, hydrogenated aluminum oxides (aluminum trihydrox- ides), calcium sulfate, barium sulfate, calcium oxalate, or titanium dioxide.
- at least 80 %, especially preferably at least 90 %, of the precipitated light- scattering pigment particles are attached to fibrils.
- the filler used is at least partly for example calcium carbonate, calcium oxalate, calcium sulfate or barium sulfate, of which a portion is in a pulverous form and a portion in a form attached to fibrils.
- a portion at least approx. 5 % by weight, preferably at least 10 % by weight, most suitably at least 20 % by weight
- the pulverous filler is replaced with a product attached to fibrils.
- the fiber pulp is formed into a paper or board web.
- the fiber web is dried and most suitably coated, and optionally after-treated by for example calendering.
- the web can be coated with, for example, calcium carbonate, gypsum, aluminum silicate, kaolin, aluminum hydroxide, magnesium silicate, talc, titanium dioxide, barium sulfate, zinc oxide, synthetic pigment, or mixtures thereof.
- the light-scattering material particles of the filler in the web are present in the fiber web in a substantially unflocculated form. This means that the formation of the web is quite good.
- the web contains conventional retention agents, such as cati- onic starch and/or silica, in total at maximum 0.40 % by weight of the mass of the fiber.
- the web is substantially or entirely free of ionic retention agents.
- "Conventional retention agents" in particular include those used together with conventional fillers. With the help of the invention it is possible to produce coated and optionally also calendered cellulose-containing material webs having excellent printing properties, high smoothness, as well as high opacity and whiteness.
- cellulose-containing material is meant here generally paper or board or a corresponding cellulose-containing material derived from a lignocellulose-containing raw material, in particular wood or annual or perennial plants.
- the said material may be wood-containing or woodfree, and it may be prepared from mechanical, semimechanical (chemimechanical) or chemical pulp.
- the chemical pulp and the mechanical pulp may be bleached or unbleached.
- the material may also contain recycled fibers, in particular recycled paper or recycled board.
- the grammage of the material web varies typically within the range 35 - 500 g/m 2 , in particular it is approx. 50 - 450 g/m 2 .
- the grammage of base paper is 20 - 250 g/m 2 , preferably 30 - 80 g/m 2 .
- a base paper of this type having a grammage of approx. 50 - 70 g/m 2 , with 10 - 20 g of coating/m /side and by calendering the paper, there is obtained a product having a grammage of 70 - 110 g/m 2 , whiteness of at least 90 % and opacity of at least 90 %.
- An especially preferred product is a coated offset paper in which high gloss and high opacity and bulk are combined.
- the invention is also suited for the production of coated fine papers, possibly also containing mechanical pulp, as well as writing and printing papers.
- Birch sulfate pulp was beaten in Valmet's JC-01 refiner in order to produce a pulp suitable for the preparation of filler.
- the consistency during the beating was approx. 4 %, its total energy consumption 343 kWh/t and its specific edge load 0.5 J/m.
- Carbonation was carried out in tap water in accordance with what is disclosed in FI patent 100729.
- An aqueous slurry having a dry matter content of 2.22 % was obtained.
- the concentration of CaCO 3 in the final product was 69.7 % and its specific surface area was 10.6 m 2 /g.
- the PCC particle size was of an order of magnitude corresponding to that in Example 1 of the FI patent.
- Example 2 The product described in Example 1 was used as filler in coated fine papers.
- Table 2 depicts the results of a fine paper test run carried out in Sweden with STFI's pilot machine (FEX): Table 2. Results of fine paper runs
- the PCC used in the tests was Albacar LO product supplied by Specialty Minerals.
- the method is provided special value by the fact that the above-mentioned combinations of properties are achieved simultaneously with better optical properties and strengths.
- base paper having a grammage of 56 g m was prepared in mill conditions.
- the slush consisted of a mixture of birch pulp (74 %) and pine pulp (24 %). After beating, the SR number of the pine pulp was 32 - 34° and that of the birch pulp was 22 - 25°. The SR number of the pulp in the head box was 35 - 40°.
- the wire section of the paper machine was Valmet's hybride wire (Sym-former), and the wet press end comprised Valmet's Sym-Press ⁇ having a triple press and a conventional drying section.
- the retention chemicals used were nanoparticles and cationic starch (Compozil Plus: EKA NP 780 nanoparticle and EKA PL 1510 C-Pam, supplier: EKA Chemicals).
- talc and PCC the doses were as follows: nanoparticle 280 g/t, polymer 70 g/t, and those for Super- Fill were: nanoparticle 280 g/t, polymer 50 g/t.
- the amounts of cationic starch and resin size used were 8 kg/t and 5.2 kg/t.
- Alum was dosed for talc in an amount of 13 kg/t and for PCC and SuperFill in an amount of 19 kg/t.
- the different fillers showed no notable differences in circulation water conductivity, COD, pH, cation requirement, or dissolved calcium concentrations. Filler retention was best with SuperFill (40 - 50 %) even though the dose of retention polymers was considerably smaller than with other fillers. The filler retention with talc and PCC was only 30 - 40 %. The good retention of SuperFill significantly reduces the consistency and turbidity of circulation water as compared with the other fillers. No differences were observable in beta formation among the different filler and filler concentrations.
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002587702A JP5064644B2 (en) | 2001-04-24 | 2002-04-24 | FIBER WEB AND METHOD FOR PRODUCING THE SAME |
CA2444795A CA2444795C (en) | 2001-04-24 | 2002-04-24 | Fibrous web and process for the preparation thereof |
EP02716872A EP1392922A1 (en) | 2001-04-24 | 2002-04-24 | Fibrous web and process for the preparation thereof |
US10/475,771 US20040168782A1 (en) | 2001-04-24 | 2002-04-24 | Fibrous web and process for the preparation thereof |
AU2002247795A AU2002247795B2 (en) | 2001-04-24 | 2002-04-24 | Fibrous web and process for the preparation thereof |
US11/808,273 US20080073049A1 (en) | 2001-04-24 | 2007-06-07 | Fibrous web and process for the preparation thereof |
US12/588,594 US20100218908A1 (en) | 2001-04-24 | 2009-10-20 | Fibrous web and process for the preparation thereof |
US13/676,418 US20130139987A1 (en) | 2001-04-24 | 2012-11-14 | Fibrous web and process for the preparation thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20010847 | 2001-04-24 | ||
FI20010847A FI117873B (en) | 2001-04-24 | 2001-04-24 | Fiber web and method of making it |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/808,273 Continuation US20080073049A1 (en) | 2001-04-24 | 2007-06-07 | Fibrous web and process for the preparation thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002090652A1 true WO2002090652A1 (en) | 2002-11-14 |
Family
ID=8561047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI2002/000344 WO2002090652A1 (en) | 2001-04-24 | 2002-04-24 | Fibrous web and process for the preparation thereof |
Country Status (9)
Country | Link |
---|---|
US (4) | US20040168782A1 (en) |
EP (1) | EP1392922A1 (en) |
JP (1) | JP5064644B2 (en) |
CN (1) | CN1279243C (en) |
AU (1) | AU2002247795B2 (en) |
CA (1) | CA2444795C (en) |
FI (1) | FI117873B (en) |
NZ (1) | NZ541156A (en) |
WO (1) | WO2002090652A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012040830A1 (en) * | 2010-10-01 | 2012-04-05 | Fpinnovations | Cellulose-reinforced high mineral content products and methods of making the same |
US9085854B2 (en) | 2011-06-21 | 2015-07-21 | Upm-Kymmene Corporation | Printing paper product, as well as a method and a system for manufacturing a printing paper product |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI115475B (en) * | 2002-10-24 | 2005-05-13 | M Real Oyj | Process for making paper and cardboard |
FI20050293A (en) * | 2005-03-18 | 2006-09-19 | Kemira Oyj | New composite materials and their manufacture and use in the manufacture of paper and cardboard |
PT3617400T (en) | 2009-03-30 | 2022-12-30 | Fiberlean Tech Ltd | Use of nanofibrillar cellulose suspensions |
EP2805986B1 (en) | 2009-03-30 | 2017-11-08 | FiberLean Technologies Limited | Process for the production of nano-fibrillar cellulose gels |
GB0908401D0 (en) | 2009-05-15 | 2009-06-24 | Imerys Minerals Ltd | Paper filler composition |
SI2386682T1 (en) | 2010-04-27 | 2014-07-31 | Omya International Ag | Process for the manufacture of structured materials using nano-fibrillar cellulose gels |
PL2386683T3 (en) | 2010-04-27 | 2014-08-29 | Omya Int Ag | Process for the production of gel-based composite materials |
GB201019288D0 (en) | 2010-11-15 | 2010-12-29 | Imerys Minerals Ltd | Compositions |
US9879361B2 (en) | 2012-08-24 | 2018-01-30 | Domtar Paper Company, Llc | Surface enhanced pulp fibers, methods of making surface enhanced pulp fibers, products incorporating surface enhanced pulp fibers, and methods of making products incorporating surface enhanced pulp fibers |
FI125836B (en) * | 2013-04-26 | 2016-03-15 | Wetend Tech Oy | A method of providing paper or board making furnish with filler and paper or board |
WO2015127239A1 (en) | 2014-02-21 | 2015-08-27 | Domtar Paper Company Llc | Surface enhanced pulp fibers at a substrate surface |
US10710930B2 (en) | 2014-02-21 | 2020-07-14 | Domtar Paper Company, Llc | Surface enhanced pulp fibers in fiber cement |
CN108137849B (en) | 2015-10-14 | 2020-10-20 | 纤维精益技术有限公司 | Sheet material capable of three-dimensional forming |
US11846072B2 (en) | 2016-04-05 | 2023-12-19 | Fiberlean Technologies Limited | Process of making paper and paperboard products |
WO2017175062A1 (en) | 2016-04-05 | 2017-10-12 | Fiberlean Technologies Limited | Paper and paperboard products |
WO2017182877A1 (en) | 2016-04-22 | 2017-10-26 | Fiberlean Technologies Limited | Fibres comprising microfibrillated cellulose and methods of manufacturing fibres and nonwoven materials therefrom |
WO2018026804A1 (en) * | 2016-08-01 | 2018-02-08 | Domtar Paper Company, Llc | Surface enhanced pulp fibers at a substrate surface |
CA3041057A1 (en) | 2016-10-18 | 2018-04-26 | Domtar Paper Company, Llc | Method for production of filler loaded surface enhanced pulp fibers |
CA3088962A1 (en) | 2018-02-05 | 2019-08-08 | Harshad PANDE | Paper products and pulps with surface enhanced pulp fibers and increased absorbency, and methods of making same |
WO2020198516A1 (en) | 2019-03-26 | 2020-10-01 | Domtar Paper Company, Llc | Paper products subjected to a surface treatment comprising enzyme-treated surface enhanced pulp fibers and methods of making the same |
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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 |
WO1996036750A1 (en) * | 1995-05-18 | 1996-11-21 | J.M. Huber Corporation | Method for preparation of pigmented paper fibers and fiber products |
WO1997001670A1 (en) * | 1995-06-29 | 1997-01-16 | Metsä-Serla Oy | Filler for use in paper manufacture and procedure for producing a filler |
EP0791685A2 (en) * | 1996-02-20 | 1997-08-27 | Metsä-Serla Oy | Procedure for adding a filler into a pulp based on cellulose fibres |
US5824364A (en) * | 1992-04-07 | 1998-10-20 | International Paper Company | Methods of manufacture for highly loaded fiber-based composite material |
EP0930345A2 (en) * | 1997-11-21 | 1999-07-21 | Metsä-Serla Corporation | Filler for use in paper manufacture and method for producing it |
Family Cites Families (7)
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US4495245A (en) * | 1983-07-14 | 1985-01-22 | E. I. Du Pont De Nemours And Company | Inorganic fillers modified with vinyl alcohol polymer and cationic melamine-formaldehyde resin |
GB2211866B (en) * | 1987-11-05 | 1992-04-15 | Oji Paper Co | Ink-jet recording sheet |
FI108283B (en) * | 1997-01-13 | 2001-12-31 | M Real Oyj | Procedure for coating paper and cardboard |
AU2708799A (en) * | 1998-03-23 | 1999-10-18 | Pulp And Paper Research Institute Of Canada | Method for producing pulp and paper with calcium carbonate filler |
WO1999050500A1 (en) * | 1998-03-31 | 1999-10-07 | Callaway Corporation | Improving retention and drainage in alkaline fine paper |
US6315866B1 (en) * | 2000-02-29 | 2001-11-13 | Nalco Chemical Company | Method of increasing the dry strength of paper products using cationic dispersion polymers |
GB2366576A (en) * | 2000-09-07 | 2002-03-13 | Ass Octel | Flocculent system |
-
2001
- 2001-04-24 FI FI20010847A patent/FI117873B/en not_active IP Right Cessation
-
2002
- 2002-04-24 AU AU2002247795A patent/AU2002247795B2/en not_active Ceased
- 2002-04-24 US US10/475,771 patent/US20040168782A1/en not_active Abandoned
- 2002-04-24 NZ NZ541156A patent/NZ541156A/en not_active IP Right Cessation
- 2002-04-24 WO PCT/FI2002/000344 patent/WO2002090652A1/en active Application Filing
- 2002-04-24 EP EP02716872A patent/EP1392922A1/en not_active Withdrawn
- 2002-04-24 CA CA2444795A patent/CA2444795C/en not_active Expired - Fee Related
- 2002-04-24 JP JP2002587702A patent/JP5064644B2/en not_active Expired - Fee Related
- 2002-04-24 CN CN02812111.2A patent/CN1279243C/en not_active Expired - Fee Related
-
2007
- 2007-06-07 US US11/808,273 patent/US20080073049A1/en not_active Abandoned
-
2009
- 2009-10-20 US US12/588,594 patent/US20100218908A1/en not_active Abandoned
-
2012
- 2012-11-14 US US13/676,418 patent/US20130139987A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
US5824364A (en) * | 1992-04-07 | 1998-10-20 | International Paper Company | Methods of manufacture for highly loaded fiber-based composite material |
WO1996036750A1 (en) * | 1995-05-18 | 1996-11-21 | J.M. Huber Corporation | Method for preparation of pigmented paper fibers and fiber products |
WO1997001670A1 (en) * | 1995-06-29 | 1997-01-16 | Metsä-Serla Oy | Filler for use in paper manufacture and procedure for producing a filler |
EP0791685A2 (en) * | 1996-02-20 | 1997-08-27 | Metsä-Serla Oy | Procedure for adding a filler into a pulp based on cellulose fibres |
EP0930345A2 (en) * | 1997-11-21 | 1999-07-21 | Metsä-Serla Corporation | Filler for use in paper manufacture and method for producing it |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012040830A1 (en) * | 2010-10-01 | 2012-04-05 | Fpinnovations | Cellulose-reinforced high mineral content products and methods of making the same |
EP2622133A1 (en) * | 2010-10-01 | 2013-08-07 | FPInnovations | Cellulose-reinforced high mineral content products and methods of making the same |
US8608906B2 (en) | 2010-10-01 | 2013-12-17 | Fpinnovations | Cellulose-reinforced high mineral content products and methods of making the same |
EP2622133A4 (en) * | 2010-10-01 | 2014-10-08 | Fpinnovations | Cellulose-reinforced high mineral content products and methods of making the same |
US9085854B2 (en) | 2011-06-21 | 2015-07-21 | Upm-Kymmene Corporation | Printing paper product, as well as a method and a system for manufacturing a printing paper product |
Also Published As
Publication number | Publication date |
---|---|
US20100218908A1 (en) | 2010-09-02 |
JP2004525280A (en) | 2004-08-19 |
FI20010847A0 (en) | 2001-04-24 |
CN1516768A (en) | 2004-07-28 |
US20080073049A1 (en) | 2008-03-27 |
CA2444795A1 (en) | 2002-11-14 |
JP5064644B2 (en) | 2012-10-31 |
FI20010847A (en) | 2002-10-25 |
NZ541156A (en) | 2007-02-23 |
EP1392922A1 (en) | 2004-03-03 |
CN1279243C (en) | 2006-10-11 |
US20040168782A1 (en) | 2004-09-02 |
CA2444795C (en) | 2013-07-16 |
US20130139987A1 (en) | 2013-06-06 |
FI117873B (en) | 2007-03-30 |
AU2002247795B2 (en) | 2007-09-06 |
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