WO1997001670A1 - Filler for use in paper manufacture and procedure for producing a filler - Google Patents
Filler for use in paper manufacture and procedure for producing a filler Download PDFInfo
- Publication number
- WO1997001670A1 WO1997001670A1 PCT/FI1996/000379 FI9600379W WO9701670A1 WO 1997001670 A1 WO1997001670 A1 WO 1997001670A1 FI 9600379 W FI9600379 W FI 9600379W WO 9701670 A1 WO9701670 A1 WO 9701670A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filler
- noil
- calcium carbonate
- procedure
- precipitation
- 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
- D21H17/63—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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0081—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/02—Compounds of alkaline earth metals or magnesium
- C09C1/021—Calcium carbonates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/60—Compounds characterised by their crystallite size
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
- C01P2004/34—Spheres hollow
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/50—Agglomerated particles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/90—Other properties not specified above
-
- 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
- D21H17/25—Cellulose
-
- 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
Definitions
- FILLER FOR USE IN PAPER MANUFACTURE AND PROCEDURE FOR PRODUCING A FILLER
- the present invention relates to a filler for use in paper manufacture as defined in the preamble of claim 1. Moreover, the invention relates to a proceedu ⁇ re for producing said filler.
- ⁇ paper' refers to various kinds of paper and cardboard, manufactured with paper and cardboard machines, coated or uncoated.
- the buyers of prin ⁇ ting paper want to reduce the postage expenses and the amount of waste produced. Further, packages are sub- ject to waste processing charges dependent on weight.
- energy taxes and environmen ⁇ tal protection taxes are being imposed on the price of paper products as a permanent extra encumbrance. For these reasons, paper buyers want products which have a lower grammage while still meeting high quality stan ⁇ dards.
- Specification FI 931584 presents a composite product based on chemical pulp fibre or mechanical pulp fibre, with calcium carbonate crystals precipita- ted onto the surface of the product.
- specifi ⁇ cation FI 944355 presents a precipitated calcium car ⁇ bonate, which is in the form of calcite particle ag ⁇ gregates where at least 25% of the particles are of a prismatic shape. Precipitation is performed using a seed material.
- specification EP 0604095 pre ⁇ sents a procedure for the processing of waste material whereby calcium carbonate is precipitated onto the surface of waste material containing inorganic matter; the waste material may contain organic waste fibre, e.g. waste fibre contained in the effluent of a paper mill, with fibre length below 75 ⁇ m.
- the calcium car- bonate products described in the specifications refer ⁇ red to are intended to be used as fillers in paper ma ⁇ nufacture.
- the aim is to produce the paper with a minimum amount of raw material.
- the grammage of the paper is redu ⁇ ced, its opacity becomes a critical factor.
- the opaci ⁇ ty can be increased by increasing the filler content of the paper, which, however, generally reduces its strength. Therefore, the aim is to alter the structure of the paper while at the same time preserving the im ⁇ portant good product qualities.
- the printing quality of paper products has to be further improved.
- the object of the present invention is to produce a new kind of calcium carbonate based filler for paper manufacture that meets the criteria descri ⁇ bed above.
- a further object of the invention is to pro ⁇ cute a new kind of calcium carbonate based filler which has better optic properties than earlier calcium carbonate based fillers.
- An additional object of the invention is to present a procedure for the manufacture of said fil- Ier.
- the invention is based, among other things, on the fact, established via corresponding investiga- tions, that calcium carbonate can be precipitated in a way that causes it to effectively adhere to fibres and noil fibrils.
- the precipitation can be so performed that porous calcium carbonate aggregates held together by fibrils, i.e. fine fibres, are formed, which aggre- gates contain plenty of empty space and in which the calcium carbonate particles have precipitated onto the noil fibrils, adhering to them.
- the noil fibrils with calcium carbonate particles precipitated on them form fibres resembling pearl necklaces, and the calcium carbonate aggregates resemble clusters of pearl neck ⁇ laces.
- the aggregates have a very large ratio of ef ⁇ fective volume to mass as compared with the correspon ⁇ ding ratio of conventional calcium carbonate used as filler; effective volume here means the volume taken up by pigment in the paper.
- the noil fibrils used in the filler of the invention are obtained from cellulose fibre and/or mechanical pulp fibre.
- the fibrils are produced from cellulose fibre and/or mechanical pulp fibre by refi- ning.
- the noil fibrils are preferably di ⁇ vided into fractions, thickness 0.1 - 2 ⁇ m, length mainly 10 - 400 ⁇ m, suitably 10 - 300 ⁇ m, preferably 10 - 150 ⁇ m.
- the noil fibrils consist of cellu ⁇ lose fibre and/or mechanical pulp fibre, which means that they contain no significant amounts of inorganic matter, preferably no inorganic matter at all.
- the diameter of the calcium carbonate par ⁇ ticles in the aggregate is of the order of about 0.2- 3 ⁇ m, preferably about 0.3-1.5 ⁇ m.
- the diameter of the CaC0 3 crystal aggregates is of the order of about 2-10 ⁇ m.
- Cellulose based noil also contains roundish noil particles which, after the precipitation process, are covered with calcium carbonate particles.
- a particle of calcium car ⁇ bonate filler corresponds in the first place to a hol- low filler particle having a small unit weight.
- the pigment is not completely hollow, because it contains noil; however, the noil has a lower unit weight than calcium carbonate, therefore the particle has a very low unit weight.
- the new precipitated, calcium carbonate based filler of the invention bestows paper better optic properties and a clearly greater strength than prior- art calcium carbonate based fillers do.
- the new filler of the invention has a clearly better retention in paper manufacture than prior-art calcium carbonate based fillers.
- the mass ratio of calcium carbonate and fibrous matter is much larger in the filler of the invention than in pore filled or lumen filled fibre.
- the filler of the invention is a completely new product, and it should not be confused with prior-art pore filled or lumen filled fibre.
- the filler of the invention and the procedure for its manufacture differ from the specification FI 931584 referred to in the introduction especially on the basis of the thickness and length of the noil fib ⁇ rils, i.e. in the present application, the noil fib ⁇ rils have been refined with a pulp refiner.
- the filler and manufacturing method of the present invention likewise differ in respect of the refined noil fibrils; in addition, in the specifi ⁇ cation referred to, the calcite particles are of a prismatic shape and their production requires the use of a special seed material.
- the product and procedure of the present in ⁇ vention likewise differ on the basis of the refinement and size of the noil fibrils; in addition, the fibre material used in the specification referred to is was ⁇ te fibre containing inorganic or other matter.
- the filler of the present invention differs from those described in the reference specifications on the basis of the good optic properties, strength properties and very high retention achieved, and especially on the basis of the combination of exceptionally good optic and strength properties.
- the fibre used in the procedure of the inven ⁇ tion may consist of chemical, mechanical or semi- mechancial pulp produced by any pulp or paper manufac ⁇ turing method known in itself, or a combination of these in arbitrary proportions, the proportion of each component being 0 - 100 % by weight.
- the refining of the pulp into noil fibrils can be implemented using any pulp refiner known in itself in pulp processing industry. When desirable, the refined noil fibrils can be screened by any fractionating method known in it ⁇ self in pulp processing, e.g. using a wire screen, in ⁇ to the desired fibril size. In precipitation, the noil, i.e. e.g. pulp based or other fibre based noil, is refined with a pulp refiner and screened, preferred fractions being e.g. wire screen fractions P100-P400.
- calcium carbonate can be precipitated from any suitable solu ⁇ tion or mixture, e.g. from a mixture of Ca(OH) 2 water solution and solid Ca(OH) 2 or from a calcium hydroxide water solution.
- precipitation can be implemented using any substance that precipitates calcium carbona- te, e.g. carbon dioxide, such as gaseous carbon dioxi ⁇ de, suitably 1-100 %, preferably 10-100 % carbon dio ⁇ xide gas.
- any reaction producing calcium carbonate e.g. the reaction between calcium chloride and sodium carbonate, producing calcium car ⁇ bonate and sodium chloride.
- the precipitation of calcium carbonate is performed on the surface of noil originating from cel ⁇ lulose fibre, suitably noil fibrils.
- concentration of noil in the precipitation process is suitably 0.0001 - 18 w-%, preferably 0.4 - 10 w-%.
- the mass ratio of calcium hydroxide and cellulose fibres in precipitation is suitably 0.1 - 20, preferably 1.4 - 4.
- the precipitation temperatu ⁇ re is in the range 5 - 150 °C, suitably 10 - 90 °C, preferably 15 - 80 °C.
- the net reacti ⁇ on is
- the precipitation can be advantageously ef- fected in a specific reactor where e.g. calcium .hydro ⁇ xide and noil are mixed.
- the carbonation reaction is implemented by supplying carbon dioxide, e.g. gaseous carbon dioxide, into the reactor.
- the progress of the reaction can be monitored by measuring the pH and con- ductivity of the mixture.
- the mixing and the supply of gas can be terminated when the pH of the mixture has fallen to the value of about 7.5, depending on the pH value of the noil.
- the carbonation is carried out e.g. in a water solution or mixture of Ca(0H) 2 .
- a disper ⁇ sing agent e.g. sodium hexametaphosphate (Na-HMF) or other dispersing agent(s)
- the filler of the invention can be used as filler as such or in any ratio of mixture (0-100 %) with another filler or other fillers.
- the amount of filler used in paper is 0.1 - 50 w-%, preferably 0.1 -
- Fig. 1 presents the equipment used in the procedure of the invention
- Fig. 2-4 present pictures taken of the filler of the invention by means of an electron microscope
- Fig. 5-8 present graphs representing the pro- perties of the filler of the invention as compared with those of a prior-art filler.
- Bleached pine sulphate pulp was refined in a Valley laboratory hollander in accordance with the SCAN-C 25:-76 standard for 2.5 hours.
- the refined pulp was screened by means of a Bauer-McNett screen, initi ⁇ ally using the wire sequence 14-50-100-200 mesh.
- the amount of dry matter screened at a time was 45 g.
- the fraction passed through the 200 mesh wire (P200 frac ⁇ tion) was saved and allowed to settle for 2 days, whereupon the aqueous phase on its surface was separa ⁇ ted.
- the P200 fraction was further fractionated with the wire sequence 100-200-290-400 mesh.
- the 100 mesh wire was used to equalize the screening process and prevent the 200 mesh wire from getting blocked at the initial stage.
- the fraction passed through the 400 mesh wire (P400 fraction) was saved and, after the noil fraction had settled, the aqueous phase on the surface was separated.
- Precipitation was performed at a temperature of 35 °C and the carbon content of the gas mixture was adjusted to a value of 15 % by volume; the reaction volume was 3.2 1.
- the filler was produced using three different Ca(OH) 2 /noil ratios.
- the proportions of raw materials are presented in Table 1.
- the noil was homogenized by mixing it in the reactor for 5 min at a mixing speed of 600 l/min. At this stage, a small nit ⁇ rogen flow was used to prevent the gas pipes from get ⁇ ting blocked. After this, the mixing speed was adjus ⁇ ted to the value 1000 l/min, and calcium hydroxide was added into the reactor.
- the measuring sensors were placed in the reactor and the reaction was started by opening the C0 2 flow as well. The progress of the reaction was monitored by measuring the pH, 8, and conductivity, 9, of the mixture. The mixing and gas supply were stopped when the pH, 8, had fallen to the value 7.5. Pictures of the product obtained were taken with an electron microscope (SEM), Fig. 2, 3, 4.
- the calcium carbonate par ⁇ ticles in the aggregate have a diameter of 0.3-1.5 ⁇ m and a roundish and partly shuttle-like shape.
- the dia- meter of the aggregates varies between about 2 - 10 ⁇ m.
- the noil/CaC0 3 fibrils can be described as re ⁇ sembling pearl necklaces and the aggregates as re ⁇ sembling clusters of pearl necklaces. There are also roundish noil particles (Fig.
- a pulp mixture containing 75 w-% bleached mechanical pulp and 25 w-% bleached pine sulphate pulp was prepa ⁇ red.
- the pulp was refined in a Valley laboratory hol- lander to SR number 30 in accordance with the SCAN-C 25:76 standard, the refining time being 38 min.
- the fillers obtained from precipitations 1 and 2 presented in Fig. 1 were used undiluted in the production of laboratory sheets, and the filler from precipitation 3 was diluted to one half of its consis ⁇ tency after precipitation.
- solutions having a consistency of 25 g/1 were prepared from commercial CaC0 3 fillers.
- the sheet pile was placed in the press and it was pressed by applying a pressure of 490 ⁇ kPa to the sheets for 4 minutes. After the wet pressing, the blotting boards on either side of the sheets were left sticking to the sheets and the sheets were placed in a cold drying drum. The sheets were dried in the drum at a temperature of 1000 °C for 2 h. After the drying, the blotting boards were released from the sheets and the sheets were seasoned for at least 24 h at a tempe ⁇ rature of 23 ⁇ 1 °C, the relative humidity being 50 + 2
- the calcium carbona ⁇ te content, grammage, ISO whiteness, light-scattering coefficient and tensile index were determined.
- the re ⁇ sults are presented in Tables 2, 3 and 4.
- Calcium carbonate retention was on an average 92 % for the filler of the invention, 64 % for commer ⁇ cial precipitated calcium carbonate (PCC) and 62 % for commercial ground calcium carbonate (GC) .
- PCC commer ⁇ cial precipitated calcium carbonate
- GC commercial ground calcium carbonate
- Fig. 5-8 present the results in the form of graphs.
- the references Sl, S2 and S2 cor ⁇ respond to the results shown in the table with fillers obtained from precipitations 1, 2 and 3, respectively;
- the references PCC and GC indicate results obtained with commercial precipitated calcium carbonate and ground calcium carbonate, respectively.
- Fig. 5 and 6 indicate that the filler of the invention has better optic properties as compared with the corresponding properties with commercial CaC0 3 fillers used in the same CaC0 3 contents.
- Fig. 7 shows that the tensile strength in the case of the filler of the invention is clearly better than in the case of commercial CaC0 3 fillers used in the same CaC0 3 contents.
- Fig. 5-8 present the results in the form of graphs.
- the references Sl, S2 and S2 cor ⁇ respond to the results shown in the table with fillers obtained from precipitations 1, 2 and 3, respectively;
- the references PCC and GC indicate results obtained with commercial precipitated calcium carbonate and ground calcium carbonate, respectively.
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT96920860T ATE205562T1 (en) | 1995-06-29 | 1996-06-27 | FILLER FOR PAPER MAKING, AND METHOD FOR PRODUCING SUCH FILLER |
CA002223955A CA2223955C (en) | 1995-06-29 | 1996-06-27 | Filler for use in paper manufacture and procedure for producing a filler |
EP96920860A EP0835343B1 (en) | 1995-06-29 | 1996-06-27 | Filler for use in paper manufacture and procedure for producing a filler |
NZ311044A NZ311044A (en) | 1995-06-29 | 1996-06-27 | Calcium carbonate filler for paper manufacture |
DE69615192T DE69615192T2 (en) | 1995-06-29 | 1996-06-27 | FILLER FOR PAPER PRODUCTION AND METHOD FOR PRODUCING THIS FILLER |
DK96920860T DK0835343T3 (en) | 1995-06-29 | 1996-06-27 | Filler for use in papermaking and its process |
AU62270/96A AU699733B2 (en) | 1995-06-29 | 1996-06-27 | Filler for use in paper manufacture and procedure for producing a filler |
JP9504193A JPH11508331A (en) | 1995-06-29 | 1996-06-27 | Papermaking filler and method for producing filler |
US08/973,926 US6251222B1 (en) | 1995-06-29 | 1997-04-04 | Filler for use in paper manufacture and procedure for producing a filler |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI953238A FI100729B (en) | 1995-06-29 | 1995-06-29 | Filler used in papermaking and method of making the filler |
FI953238 | 1995-06-29 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/726,843 Continuation US6375794B2 (en) | 1995-06-29 | 2000-11-30 | Filler for use in paper manufacture and procedure for producing a filler |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997001670A1 true WO1997001670A1 (en) | 1997-01-16 |
Family
ID=8543702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1996/000379 WO1997001670A1 (en) | 1995-06-29 | 1996-06-27 | Filler for use in paper manufacture and procedure for producing a filler |
Country Status (13)
Country | Link |
---|---|
US (3) | US6251222B1 (en) |
EP (1) | EP0835343B1 (en) |
JP (1) | JPH11508331A (en) |
AT (1) | ATE205562T1 (en) |
AU (1) | AU699733B2 (en) |
CA (1) | CA2223955C (en) |
DE (1) | DE69615192T2 (en) |
DK (1) | DK0835343T3 (en) |
ES (1) | ES2163640T3 (en) |
FI (1) | FI100729B (en) |
NZ (1) | NZ311044A (en) |
PT (1) | PT835343E (en) |
WO (1) | WO1997001670A1 (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0819787A2 (en) * | 1996-07-13 | 1998-01-21 | Hocepro GmbH | Cellulose fibrils |
EP0892019A1 (en) * | 1997-07-14 | 1999-01-20 | Ecc International Limited | Pigment materials and their preparation and use |
EP0930345A2 (en) * | 1997-11-21 | 1999-07-21 | Metsä-Serla Corporation | Filler for use in paper manufacture and method for producing it |
EP0935020A1 (en) * | 1998-02-09 | 1999-08-11 | Metsä-Serla Corporation | Noil consisting of fibrils for use in paper manufacture, method for its production, and paper pulp and paper containing such noil |
EP1172478A1 (en) * | 2000-07-13 | 2002-01-16 | Voith Paper Patent GmbH | Process for loading fibers with calcium carbonate |
EP1172477A1 (en) * | 2000-07-13 | 2002-01-16 | Voith Paper Patent GmbH | Process and apparatus for loading fibers with calcium carbonate |
US6387212B1 (en) | 1998-02-20 | 2002-05-14 | L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for obtaining fibers integral with calcium carbonate particles |
EP1243693A2 (en) * | 2001-03-22 | 2002-09-25 | Voith Paper Patent GmbH | Process for loading fibers from a fibrous suspension with an additive |
WO2002086238A1 (en) * | 2001-04-24 | 2002-10-31 | M-Real Oyj | Filler and a process for the production thereof |
WO2002090652A1 (en) * | 2001-04-24 | 2002-11-14 | M-Real Oyj | Fibrous web and process for the preparation thereof |
WO2002092909A1 (en) * | 2001-04-24 | 2002-11-21 | M-Real Oyj | Coated fibrous web and process for the production thereof |
WO2002092910A1 (en) * | 2001-04-24 | 2002-11-21 | M-Real Oyj | Multilayered fibrous product and a process for the production thereof |
WO2004038101A1 (en) * | 2002-10-24 | 2004-05-06 | M-Real Oyj | Method for producing fiber product |
WO2004038100A1 (en) * | 2002-10-24 | 2004-05-06 | M-Real Oyj | Method for manufacturing paper and board |
WO2005033403A1 (en) * | 2003-10-01 | 2005-04-14 | Imerys Pigments, Inc. | Preparation of a composition comprising an alkaline earth metal oxide and a substrate having a reduced amount of grit |
WO2006048280A1 (en) | 2004-11-03 | 2006-05-11 | J. Rettenmaier & Söhne GmbH & Co. KG | Cellulose-containing filling material for paper, tissue, or cardboard products, method for the production thereof, paper, tissue, or cardboard product containing such a filling material, or dry mixture used therefor |
WO2006136651A1 (en) * | 2005-06-23 | 2006-12-28 | M-Real Oyj | Method of producing a fibrous web |
WO2007067146A1 (en) * | 2005-12-07 | 2007-06-14 | Stora Enso Ab | A method of producing precipitated calcium carbonate |
WO2008000308A1 (en) * | 2006-06-28 | 2008-01-03 | Voith Patent Gmbh | Method of loading a pulp suspension with filler |
WO2008131819A1 (en) * | 2007-04-26 | 2008-11-06 | Voith Patent Gmbh | Method for loading fibres in a fibrous suspension with calcium carbonate formed from calcium hydrogen carbonate solution |
DE102007059736A1 (en) | 2007-12-12 | 2009-06-18 | Omya Development Ag | Surface mineralized organic fibers |
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 |
WO2021252572A1 (en) | 2020-06-12 | 2021-12-16 | Specialty Minerals (Michigan) Inc. | Surface mineralized organic fibers and methods of making the same |
WO2023192172A1 (en) | 2022-03-31 | 2023-10-05 | Specialty Minerals (Michigan) Inc. | Composite fibers and methods of making the same |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2282211C (en) * | 1998-10-16 | 2007-01-09 | Grain Processing Corporation | Process for preparing a paper web |
CA2413709C (en) * | 2000-06-27 | 2006-02-07 | International Paper Company | Method to manufacture paper using fiber filler complexes |
FR2821095B1 (en) * | 2001-02-16 | 2003-04-11 | Arjo Wiggins Sa | PROCESS FOR OBTAINING A PAPER SHEET CONTAINING CALCITE |
DE10120636A1 (en) * | 2001-04-27 | 2002-10-31 | Voith Paper Patent Gmbh | Method and device for the preparation of material used in particular for papermaking |
DE10120637A1 (en) * | 2001-04-27 | 2002-10-31 | Voith Paper Patent Gmbh | Process for loading fibers |
US6413365B1 (en) * | 2001-07-11 | 2002-07-02 | Voith Paper Patent Gmbh | Method of loading a fiber suspension with calcium carbonate |
FI117715B (en) * | 2001-10-25 | 2007-01-31 | M Real Oyj | A method for improving the economy of manufacture and use of a filler |
FI116573B (en) * | 2001-11-28 | 2005-12-30 | M Real Oyj | Filler for making thin base paper and method for making base paper |
EP1474568A1 (en) * | 2002-02-02 | 2004-11-10 | Voith Paper Patent GmbH | Method for preparing fibres contained in a pulp suspension |
US20040168781A1 (en) * | 2002-08-05 | 2004-09-02 | Petri Silenius | Noil for use in paper manufacture, method for its production, and paper pulp and paper containing such noil |
US20040108082A1 (en) * | 2002-12-09 | 2004-06-10 | Specialty Minerals (Michigan) Inc. | Filler-fiber composite |
US20040108083A1 (en) * | 2002-12-09 | 2004-06-10 | Specialty Minerals (Michigan) Inc. | Filler-fiber composite |
US9156990B2 (en) * | 2003-12-22 | 2015-10-13 | Eka Chemicals Ab | Filler for papermaking process |
CN1898439B (en) | 2003-12-22 | 2012-04-25 | 埃卡化学公司 | Filler for papermaking process |
GB0413068D0 (en) * | 2004-06-11 | 2004-07-14 | Imerys Minerals Ltd | Treatment of pulp |
BRPI0513120A (en) * | 2004-07-14 | 2008-04-29 | Int Paper Co | paper substrate and method for producing a paper substrate |
DE102004045089A1 (en) * | 2004-09-17 | 2006-03-23 | Voith Paper Patent Gmbh | Method and device for loading a pulp suspension |
JPWO2006057152A1 (en) * | 2004-11-08 | 2008-06-05 | 小野薬品工業株式会社 | Antidiabetic agent comprising a proteolytic enzyme inhibitory compound |
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 |
PT2070991E (en) * | 2007-12-12 | 2010-10-25 | Omya Development Ag | Process to make surface-reacted precipitated calcium carbonate |
FI20095692A0 (en) * | 2009-06-18 | 2009-06-18 | Upm Kymmene Oyj | Paper product and process for making it |
SI2292701T1 (en) * | 2009-07-01 | 2014-01-31 | Omya International Ag | Method for improving opacity |
FI124142B (en) | 2009-10-09 | 2014-03-31 | Upm Kymmene Corp | Process for precipitating calcium carbonate and xylan, a process-made product and its use |
CN101691700B (en) * | 2009-10-15 | 2012-05-23 | 金东纸业(江苏)股份有限公司 | Pulp-grinding method for improving fibre brooming and application thereof in papermaking |
FI20105128A (en) * | 2010-02-10 | 2011-08-11 | Kemira Oyj | Process for making a pigment-fiber composite |
FI125826B (en) * | 2010-08-04 | 2016-02-29 | Nordkalk Oy Ab | Process for the production of paper or board |
FI125278B (en) * | 2010-08-20 | 2015-08-14 | Upm Kymmene Corp | Process for precipitating calcium carbonate and using the process |
FI123309B (en) * | 2011-04-08 | 2013-02-15 | Upm Kymmene Corp | Process for making pulp and pulp |
JO3752B1 (en) | 2011-06-10 | 2021-01-31 | Schweitzer Mauduit Int Inc | Tobacco Material Containing Non-Isometric Calcium Carbonate Microparticles |
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 |
SE538250C2 (en) | 2012-11-09 | 2016-04-12 | In-line production method for papermaking | |
EP2886613A1 (en) * | 2013-12-17 | 2015-06-24 | Kronos International, Inc. | Method for manufacturing composite particles |
AU2015218818B2 (en) | 2014-02-21 | 2017-07-06 | Domtar Paper Company Llc | Surface enhanced pulp fibers at a substrate surface |
MX2016010821A (en) | 2014-02-21 | 2017-05-09 | Domtar Paper Co Llc | Surface enhanced pulp fibers in fiber cement. |
CN108474182B (en) * | 2016-01-05 | 2021-09-28 | 斯道拉恩索公司 | Method of forming a complex comprising MFC and complexes produced by said method |
SE540790C2 (en) | 2016-02-12 | 2018-11-13 | Stora Enso Oyj | Calcium carbonate precipitated on natural fibers and method for the production thereof |
US11473245B2 (en) | 2016-08-01 | 2022-10-18 | 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 |
CA3134990A1 (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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2265916A (en) * | 1992-04-07 | 1993-10-13 | Aussedat Rey Sa | Composite product based on fibres and filler |
WO1993020010A1 (en) * | 1992-04-03 | 1993-10-14 | Minerals Technologies, Inc. | Clustered precipitated calcium carbonate particles |
EP0604095A1 (en) * | 1992-12-23 | 1994-06-29 | Ecc International Limited | Process for the treatment of waste material suspensions |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1443454A (en) * | 1921-04-13 | 1923-01-30 | Booth Levis Miller | Process of manufacturing paper or pulp |
US3262877A (en) * | 1964-11-05 | 1966-07-26 | Kimberly Clark Co | Water treatment process |
US3873418A (en) * | 1970-02-09 | 1975-03-25 | Savo Oy | Method of recovering noil fibres and soluble wood material from waste water |
US4374702A (en) | 1979-12-26 | 1983-02-22 | International Telephone And Telegraph Corporation | Microfibrillated cellulose |
SE455795B (en) * | 1986-12-03 | 1988-08-08 | Mo Och Domsjoe Ab | PROCEDURE AND DEVICE FOR PREPARING FILLING PAPER |
US4761203A (en) | 1986-12-29 | 1988-08-02 | The Buckeye Cellulose Corporation | Process for making expanded fiber |
FI77535C (en) | 1987-03-09 | 1989-03-10 | Kajaani Electronics | Method for measuring the relative amounts of the pulp components in paper pulp. |
SE461156B (en) | 1988-05-25 | 1990-01-15 | Eka Nobel Ab | SET FOR PREPARATION OF PAPER WHICH SHAPES AND DRAINAGE OWN ROOMS IN THE PRESENCE OF AN ALUMINUM SUBSTANCE, A COTTONIC RETENTION AND POLYMER SILICON ACID |
GB8813396D0 (en) | 1988-06-07 | 1988-07-13 | Earl H A | Composite materials |
SE500871C2 (en) | 1989-09-27 | 1994-09-19 | Sca Research Ab | Aluminum salt impregnated fibers, methods of making them, absorbent material for use in hygiene articles and use of the fibers as absorbent material |
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 |
GB2265926A (en) | 1992-04-06 | 1993-10-13 | Bernard Whitehead | Preventing ground erosion |
JP2980272B2 (en) | 1992-09-14 | 1999-11-22 | 鹿島建設株式会社 | Visualization method of micro crack |
US5385640A (en) | 1993-07-09 | 1995-01-31 | Microcell, Inc. | Process for making microdenominated cellulose |
US5487419A (en) | 1993-07-09 | 1996-01-30 | Microcell, Inc. | Redispersible microdenominated cellulose |
DE69408807T2 (en) * | 1993-12-14 | 1998-06-18 | Ecc Int Ltd | Water and solids recovery in a paper mill |
US5476228A (en) | 1994-03-07 | 1995-12-19 | Beloit Technologies, Inc. | Refiner disk with alternating depth grooves |
JP3421446B2 (en) | 1994-09-08 | 2003-06-30 | 特種製紙株式会社 | Method for producing powder-containing paper |
EP0703451A3 (en) | 1994-09-26 | 1998-07-29 | Nalco Chemical Company | Monitoring process fluids in papermaking systems |
US5665205A (en) | 1995-01-19 | 1997-09-09 | International Paper Company | Method for improving brightness and cleanliness of secondary fibers for paper and paperboard manufacture |
US5679220A (en) | 1995-01-19 | 1997-10-21 | International Paper Company | Process for enhanced deposition and retention of particulate filler on papermaking fibers |
-
1995
- 1995-06-29 FI FI953238A patent/FI100729B/en not_active IP Right Cessation
-
1996
- 1996-06-27 DK DK96920860T patent/DK0835343T3/en active
- 1996-06-27 EP EP96920860A patent/EP0835343B1/en not_active Expired - Lifetime
- 1996-06-27 AT AT96920860T patent/ATE205562T1/en active
- 1996-06-27 CA CA002223955A patent/CA2223955C/en not_active Expired - Lifetime
- 1996-06-27 PT PT96920860T patent/PT835343E/en unknown
- 1996-06-27 JP JP9504193A patent/JPH11508331A/en active Pending
- 1996-06-27 ES ES96920860T patent/ES2163640T3/en not_active Expired - Lifetime
- 1996-06-27 NZ NZ311044A patent/NZ311044A/en not_active IP Right Cessation
- 1996-06-27 WO PCT/FI1996/000379 patent/WO1997001670A1/en active IP Right Grant
- 1996-06-27 AU AU62270/96A patent/AU699733B2/en not_active Ceased
- 1996-06-27 DE DE69615192T patent/DE69615192T2/en not_active Expired - Lifetime
-
1997
- 1997-04-04 US US08/973,926 patent/US6251222B1/en not_active Expired - Lifetime
-
2000
- 2000-11-30 US US09/726,843 patent/US6375794B2/en not_active Expired - Lifetime
-
2001
- 2001-12-27 US US10/033,678 patent/US6599391B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993020010A1 (en) * | 1992-04-03 | 1993-10-14 | Minerals Technologies, Inc. | Clustered precipitated calcium carbonate particles |
GB2265916A (en) * | 1992-04-07 | 1993-10-13 | Aussedat Rey Sa | Composite product based on fibres and filler |
EP0604095A1 (en) * | 1992-12-23 | 1994-06-29 | Ecc International Limited | Process for the treatment of waste material suspensions |
Cited By (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0819787A3 (en) * | 1996-07-13 | 1998-06-03 | Hocepro GmbH | Cellulose fibrils |
EP0819787A2 (en) * | 1996-07-13 | 1998-01-21 | Hocepro GmbH | Cellulose fibrils |
EP0892019A1 (en) * | 1997-07-14 | 1999-01-20 | Ecc International Limited | Pigment materials and their preparation and use |
WO1999003928A1 (en) * | 1997-07-14 | 1999-01-28 | Ecc International Ltd. | Pigment materials and their preparation and use |
EP0930345A2 (en) * | 1997-11-21 | 1999-07-21 | Metsä-Serla Corporation | Filler for use in paper manufacture and method for producing it |
EP0930345A3 (en) * | 1997-11-21 | 2000-05-10 | Metsä-Serla Corporation | Filler for use in paper manufacture and method for producing it |
US6156118A (en) * | 1997-11-21 | 2000-12-05 | Metsa-Serla Corporation | Filler for use in paper manufacture and method for producing it |
EP0935020A1 (en) * | 1998-02-09 | 1999-08-11 | Metsä-Serla Corporation | Noil consisting of fibrils for use in paper manufacture, method for its production, and paper pulp and paper containing such noil |
AU741861B2 (en) * | 1998-02-09 | 2001-12-13 | M-Real Corporation | Noil for use in paper manufacture, method for its production, and paper pulp and paper containing such noil |
US6387212B1 (en) | 1998-02-20 | 2002-05-14 | L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for obtaining fibers integral with calcium carbonate particles |
US6755941B2 (en) | 2000-07-13 | 2004-06-29 | Voith Paper Patent Gmbh | Apparatus for loading fibers with calcium carbonate |
US6599390B2 (en) | 2000-07-13 | 2003-07-29 | Voith Paper Patent Gmbh | Process for loading fibers with calcium carbonate in a plurality of reactors |
EP1172477A1 (en) * | 2000-07-13 | 2002-01-16 | Voith Paper Patent GmbH | Process and apparatus for loading fibers with calcium carbonate |
US6881298B2 (en) | 2000-07-13 | 2005-04-19 | Voith Paper Patent Gmbh | Process for loading fibers with calcium carbonate in a plurality of reactors |
EP1172478A1 (en) * | 2000-07-13 | 2002-01-16 | Voith Paper Patent GmbH | Process for loading fibers with calcium carbonate |
US6537425B2 (en) | 2000-07-13 | 2003-03-25 | Voith Paper Patent Gmbh | Process for loading fibers with calcium carbonate |
EP1243693A2 (en) * | 2001-03-22 | 2002-09-25 | Voith Paper Patent GmbH | Process for loading fibers from a fibrous suspension with an additive |
EP1243693A3 (en) * | 2001-03-22 | 2003-12-10 | Voith Paper Patent GmbH | Process for loading fibers from a fibrous suspension with an additive |
US7083703B2 (en) | 2001-04-24 | 2006-08-01 | M-Real Oyj | Filler and a process for the production thereof |
WO2002086238A1 (en) * | 2001-04-24 | 2002-10-31 | M-Real Oyj | Filler and a process for the production thereof |
CN100396847C (en) * | 2001-04-24 | 2008-06-25 | M-真实公司 | Filler and process for production thereof |
AU2002247793B2 (en) * | 2001-04-24 | 2008-05-01 | M-Real Oyj | Coated fibrous web and process for the production thereof |
WO2002092909A1 (en) * | 2001-04-24 | 2002-11-21 | M-Real Oyj | Coated fibrous web and process for the production thereof |
JP2004525282A (en) * | 2001-04-24 | 2004-08-19 | アムーレアル オサケ ユキチュア ユルキネン | Multilayer fiber product and method for producing the same |
AU2002249300B2 (en) * | 2001-04-24 | 2008-04-24 | M-Real Oyj | Multilayered fibrous product and a process for the production thereof |
WO2002090652A1 (en) * | 2001-04-24 | 2002-11-14 | M-Real Oyj | Fibrous web and process for the preparation thereof |
WO2002092910A1 (en) * | 2001-04-24 | 2002-11-21 | M-Real Oyj | Multilayered fibrous product and a process for the production thereof |
AU2002247795B2 (en) * | 2001-04-24 | 2007-09-06 | M-Real Oyj | Fibrous web and process for the preparation thereof |
WO2004038100A1 (en) * | 2002-10-24 | 2004-05-06 | M-Real Oyj | Method for manufacturing paper and board |
WO2004038101A1 (en) * | 2002-10-24 | 2004-05-06 | M-Real Oyj | Method for producing fiber product |
US8608905B2 (en) | 2002-10-24 | 2013-12-17 | Markku Leskela | Method for producing fiber product |
US8491755B2 (en) | 2002-10-24 | 2013-07-23 | M-Real Oyj | Method for manufacturing paper and board |
WO2005033403A1 (en) * | 2003-10-01 | 2005-04-14 | Imerys Pigments, Inc. | Preparation of a composition comprising an alkaline earth metal oxide and a substrate having a reduced amount of grit |
WO2006048280A1 (en) | 2004-11-03 | 2006-05-11 | J. Rettenmaier & Söhne GmbH & Co. KG | Cellulose-containing filling material for paper, tissue, or cardboard products, method for the production thereof, paper, tissue, or cardboard product containing such a filling material, or dry mixture used therefor |
WO2006136651A1 (en) * | 2005-06-23 | 2006-12-28 | M-Real Oyj | Method of producing a fibrous web |
EP1893807A4 (en) * | 2005-06-23 | 2012-01-25 | M Real Oyj | Method of producing a fibrous web |
EP1893807A1 (en) * | 2005-06-23 | 2008-03-05 | M-real Oyj | Method of producing a fibrous web |
WO2007067146A1 (en) * | 2005-12-07 | 2007-06-14 | Stora Enso Ab | A method of producing precipitated calcium carbonate |
WO2008000308A1 (en) * | 2006-06-28 | 2008-01-03 | Voith Patent Gmbh | Method of loading a pulp suspension with filler |
WO2008131819A1 (en) * | 2007-04-26 | 2008-11-06 | Voith Patent Gmbh | Method for loading fibres in a fibrous suspension with calcium carbonate formed from calcium hydrogen carbonate solution |
DE102007059736A1 (en) | 2007-12-12 | 2009-06-18 | Omya Development Ag | Surface mineralized organic fibers |
US9725599B2 (en) | 2007-12-12 | 2017-08-08 | Omya International Ag | Surface-mineralized organic fibers |
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 |
WO2021252572A1 (en) | 2020-06-12 | 2021-12-16 | Specialty Minerals (Michigan) Inc. | Surface mineralized organic fibers and methods of making the same |
WO2023192172A1 (en) | 2022-03-31 | 2023-10-05 | Specialty Minerals (Michigan) Inc. | Composite fibers and methods of making the same |
Also Published As
Publication number | Publication date |
---|---|
CA2223955C (en) | 2010-02-02 |
US20010000063A1 (en) | 2001-03-29 |
FI100729B (en) | 1998-02-13 |
DE69615192D1 (en) | 2001-10-18 |
NZ311044A (en) | 1998-07-28 |
ATE205562T1 (en) | 2001-09-15 |
EP0835343B1 (en) | 2001-09-12 |
US6375794B2 (en) | 2002-04-23 |
PT835343E (en) | 2002-01-30 |
AU699733B2 (en) | 1998-12-10 |
DE69615192T2 (en) | 2002-07-04 |
US6599391B2 (en) | 2003-07-29 |
ES2163640T3 (en) | 2002-02-01 |
JPH11508331A (en) | 1999-07-21 |
FI953238A0 (en) | 1995-06-29 |
US20020084050A1 (en) | 2002-07-04 |
CA2223955A1 (en) | 1997-01-16 |
DK0835343T3 (en) | 2001-11-12 |
EP0835343A1 (en) | 1998-04-15 |
AU6227096A (en) | 1997-01-30 |
FI953238A (en) | 1996-12-30 |
US6251222B1 (en) | 2001-06-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU699733B2 (en) | Filler for use in paper manufacture and procedure for producing a filler | |
CA2254268C (en) | Filler for use in paper manufacture and method for producing it | |
EP2798012B1 (en) | Use of precipitated carbonate in the manufacture of a fibre product | |
JP3145707B2 (en) | Method of filling compound into fiber | |
AU3550089A (en) | High performance paper filler and method of producing same | |
JP5064644B2 (en) | FIBER WEB AND METHOD FOR PRODUCING THE SAME | |
WO2005121447A1 (en) | Treatment of pulp | |
SK67296A3 (en) | Treatment of inorganic filler material for paper with polysaccharides | |
CN101203644A (en) | Method of producing a fibrous web | |
US4818294A (en) | Kaolinite aggregation using organo-silicon compounds | |
AU741861B2 (en) | Noil for use in paper manufacture, method for its production, and paper pulp and paper containing such noil | |
JP2000506486A (en) | Acid-resistant calcium carbonate composition and use thereof | |
WO2020059859A1 (en) | Cellulose fiber ball and paper containing this | |
CN100585074C (en) | Method for manufacturing paper and board | |
AU2003216948A1 (en) | Fibrous web and process for the production thereof | |
US4935062A (en) | Kaolinite aggregation using organo-silicon compounds | |
WO1998056860A1 (en) | Filler composition for groundwood-containing grades of paper | |
US20040168781A1 (en) | Noil for use in paper manufacture, method for its production, and paper pulp and paper containing such noil |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU CA FI JP NZ US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1996920860 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2223955 Country of ref document: CA Ref country code: CA Ref document number: 2223955 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 311044 Country of ref document: NZ |
|
ENP | Entry into the national phase |
Ref country code: JP Ref document number: 1997 504193 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 08973926 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 1996920860 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1996920860 Country of ref document: EP |