US20040244930A1 - Method for manufacturing filler container chemical pulp - Google Patents
Method for manufacturing filler container chemical pulp Download PDFInfo
- Publication number
- US20040244930A1 US20040244930A1 US10/493,381 US49338104A US2004244930A1 US 20040244930 A1 US20040244930 A1 US 20040244930A1 US 49338104 A US49338104 A US 49338104A US 2004244930 A1 US2004244930 A1 US 2004244930A1
- Authority
- US
- United States
- Prior art keywords
- filler
- chemical pulp
- paper
- board
- pulp
- 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
Links
- 239000000945 filler Substances 0.000 title claims abstract description 83
- 229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 37
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 50
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 24
- 230000001376 precipitating effect Effects 0.000 claims abstract description 5
- 238000000149 argon plasma sintering Methods 0.000 claims description 6
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 229920003043 Cellulose fiber Polymers 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 239000007900 aqueous suspension Substances 0.000 claims description 2
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 claims description 2
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 239000010440 gypsum Substances 0.000 claims description 2
- 229910052602 gypsum Inorganic materials 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 4
- 238000001035 drying Methods 0.000 description 5
- 235000018185 Betula X alpestris Nutrition 0.000 description 4
- 235000018212 Betula X uliginosa Nutrition 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
-
- 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
Definitions
- the invention relates to a method for manufacturing filler containing chemical pulp, which filler is prepared by precipitating particles comprising an organic or inorganic salt onto the surface of noil fibrils.
- the invention also relates to a method by means of which it is possible to manufacture and/or produce said filler in a form that can be used directly in paper and board applications.
- an object of the invention is to provide a method for manufacturing paper and/or board, which method makes use of chemical pulp having said filler incorporated therein as dried in chemical pulp bales.
- the invention also relates to a method for improving the manufacturing and usage economy of a filler, in particular a calcium carbonate based filler, used in the manufacture of paper and board.
- FI patent 100729 discloses a calcium carbonate based filler which gives the paper improved strength properties and a lower basis weight, and by means of which it is generally possible to reduce the costs of paper manufacture.
- the calcium carbonate based filler is manufactured by precipitating calcium carbonate onto the surface of noil fibrils produced from cellulose fibre and/or mechanical pulp fibre by refining.
- calcium carbonate crystal aggregates are formed that resemble pearl necklaces and are held together by noil fibrils, i.e. fine fibres, and in which the calcium carbonate particles have precipitated onto the noil fibrils, adhering to them.
- the diameter of the calcium carbonate particles in the aggregates is about 0.2-3 ⁇ m.
- This filler also known under the trademark SuperFill®, is advantageously based on calcium carbonate and it imparts a clearly improved combination of light-scattering and strengths to the paper as compared with conventional calcium carbonate based fillers. It is particularly significant that the SuperFill® filler is able to impart a very uniform distribution of light-scattering material to the paper.
- the calcium carbonate based SuperFill® filler can be manufactured on an industrial scale mainly as dilute suspensions, which considerably limits the use of the filler. This also leads to the fact that SuperFill® filler can be used only in localities where a plant manufacturing SuperFill® filler is located, because the transport of the filler becomes very uneconomical and difficult because of its high water content. Moreover, if SuperFill® filler is manufactured only in small quantities, manufacturing costs are high, which again leads to the fact that in some product applications the price of the filler becomes too high. Further, the manufacturing process of SuperFill® filler requires special utilities, such as, for example, a sufficiently good source of carbon dioxide, which is not always available in the localities where paper or board is manufactured.
- An object of the invention is a method by means of which it is possible to manufacture chemical pulp which has SuperFill® filler, advantageously calcium carbonate based SuperFill® filler, incorporated therein in an amount suitable for each paper and board application, as dried and mixed with the chemical pulp, advantageously dried into bales, thereby making it possible to use SuperFill® filler also in manufacturing localities where there is no production plant of said filler.
- SuperFill® filler advantageously calcium carbonate based SuperFill® filler
- An object of the invention is also the thus manufactured chemical pulp which has SuperFill® filler incorporated therein in an amount suitable for each paper and board application.
- An object of the present invention is further a method for improving the manufacturing and usage economy of SuperFill® filler, advantageously calcium carbonate based SuperFill® filler.
- an object of the invention is a method for manufacturing paper and/or board, which method makes use of chemical pulp having SuperFill® filler, advantageously calcium carbonate based SuperFill® filler, incorporated therein as dried in chemical pulp bales.
- the filler can also contain optionally a dispersing agent, such as, for example, sodium hexametaphosphate.
- the SuperFill® filler is passed in an aqueous suspension, the solids content of which is 0.1-35 wt. %, advantageously 2-6 wt. %, to a chemical pulp dryer and further to be mixed with chemical pulp.
- the drying of the chemical pulp can be carried out by any method conventionally used for drying chemical pulp.
- the chemical pulp is dried into bales.
- chemical pulp advantageously chemical pulp bales, containing a desired amount of SuperFill® filler uniformly distributed in the chemical pulp, is/are obtained.
- the chemical pulp can be refined, but it can also be unrefined.
- Baled chemical pulp containing SuperFill® filler can be pulped in a conventional manner in a paper or board mill, and it can be added to any conventional pulp blend used in the manufacture of paper and board.
- Paper and board can be manufactured from the SuperFill® filler containing chemical pulp by methods known in themselves, from which methods the conventional separate filler addition phase is now omitted.
- SuperFill® filler containing chemical pulp can be added to pulp 1-100%.
- the method according to the invention and the thus manufactured chemical pulp have significant advantages over the arrangements of the prior art.
- the invention makes it possible to substantially improve the profit potential of the technology associated with SuperFill® filler, whereby both the manufacturing economy is improved and the number of application sites is increased.
- it is possible to manufacture chemical pulp that contains a suitable filler amount for each paper and board application.
- the method makes it possible to avoid transporting large amounts of water, thereby saving energy, costs and spaces.
- the thus manufactured SuperFill® filler containing chemical pulp can be transported even long distances and it can also be used in manufacturing localities and in product applications which lack the utilities necessary for building a PCC plant, such as, for example, a sufficient source of carbon dioxide or suitable pulp processing devices.
- it is also possible to manufacture chemical pulp of uniform quality containing a precisely predetermined amount of SuperFill® filler. It is possible to manufacture paper and board of more uniform quality, the properties of which are superior to those of the paper manufactured in a conventional manner.
- the invention makes a centralized SuperFill® filler production plant possible, which has a high capacity and which is capable of manufacturing filler at lower costs.
- the production plant may optionally also comprise a separate drying line for the filler.
- Paper was manufactured from the SuperFill® filler containing chemical pulp described in Example 1 in a conventional manner on a paper machine such that 1 ton of paper contained:
Abstract
The invention relates to a method for improving the manufacturing and usage economy of a filler, in particular a calcium carbonate based filler, used in the manufacture of paper and board, which calcium carbonate based filler is prepared by precipitating calcium carbonate particles onto the surface of noil fibrils. The invention also relates to a method by means of which it is possible to manufacture and/or produce said filler in a form that can be used directly in paper and board applications. Further, an object of the invention is to provide a method for manufacturing paper and/or board, which method makes use of chemical pulp having said filler incorporated therein as dried in chemical pulp bales.
Description
- The invention relates to a method for manufacturing filler containing chemical pulp, which filler is prepared by precipitating particles comprising an organic or inorganic salt onto the surface of noil fibrils. The invention also relates to a method by means of which it is possible to manufacture and/or produce said filler in a form that can be used directly in paper and board applications. Further, an object of the invention is to provide a method for manufacturing paper and/or board, which method makes use of chemical pulp having said filler incorporated therein as dried in chemical pulp bales. The invention also relates to a method for improving the manufacturing and usage economy of a filler, in particular a calcium carbonate based filler, used in the manufacture of paper and board.
- In recent times, strenuous efforts have been made to develop calcium carbonate based fillers and their manufacturing methods in order to be able to meet the ever-higher quality requirements of high-quality paper, to reduce the loading to the environment and the need of energy, and to improve the runnability of the paper and board machine. Traditionally, in the manufacture of paper and board, a stock is prepared from mechanical pulp or chemical pulp or from a combination of them, and the necessary fillers and other additives can be added to this stock, and further paper or board of desired quality can be manufactured by a suitable method.
- FI patent 100729 discloses a calcium carbonate based filler which gives the paper improved strength properties and a lower basis weight, and by means of which it is generally possible to reduce the costs of paper manufacture. The calcium carbonate based filler is manufactured by precipitating calcium carbonate onto the surface of noil fibrils produced from cellulose fibre and/or mechanical pulp fibre by refining. In that connection, calcium carbonate crystal aggregates are formed that resemble pearl necklaces and are held together by noil fibrils, i.e. fine fibres, and in which the calcium carbonate particles have precipitated onto the noil fibrils, adhering to them. The diameter of the calcium carbonate particles in the aggregates is about 0.2-3 μm. This filler, also known under the trademark SuperFill®, is advantageously based on calcium carbonate and it imparts a clearly improved combination of light-scattering and strengths to the paper as compared with conventional calcium carbonate based fillers. It is particularly significant that the SuperFill® filler is able to impart a very uniform distribution of light-scattering material to the paper.
- The calcium carbonate based SuperFill® filler can be manufactured on an industrial scale mainly as dilute suspensions, which considerably limits the use of the filler. This also leads to the fact that SuperFill® filler can be used only in localities where a plant manufacturing SuperFill® filler is located, because the transport of the filler becomes very uneconomical and difficult because of its high water content. Moreover, if SuperFill® filler is manufactured only in small quantities, manufacturing costs are high, which again leads to the fact that in some product applications the price of the filler becomes too high. Further, the manufacturing process of SuperFill® filler requires special utilities, such as, for example, a sufficiently good source of carbon dioxide, which is not always available in the localities where paper or board is manufactured.
- Based on the above, it may be noted that there exists an obvious need for a method by means of which it is possible to manufacture and/or produce chemical pulp that contains SuperFill® filler, advantageously calcium carbonate based SuperFill® filler, which pulp can be used directly in paper and board applications and by means of which it is possible to avoid or at least substantially reduce the above-mentioned problems of the prior art arrangements.
- An object of the invention is a method by means of which it is possible to manufacture chemical pulp which has SuperFill® filler, advantageously calcium carbonate based SuperFill® filler, incorporated therein in an amount suitable for each paper and board application, as dried and mixed with the chemical pulp, advantageously dried into bales, thereby making it possible to use SuperFill® filler also in manufacturing localities where there is no production plant of said filler.
- An object of the invention is also the thus manufactured chemical pulp which has SuperFill® filler incorporated therein in an amount suitable for each paper and board application.
- An object of the present invention is further a method for improving the manufacturing and usage economy of SuperFill® filler, advantageously calcium carbonate based SuperFill® filler.
- Further, an object of the invention is a method for manufacturing paper and/or board, which method makes use of chemical pulp having SuperFill® filler, advantageously calcium carbonate based SuperFill® filler, incorporated therein as dried in chemical pulp bales.
- The features characteristic of the methods and the chemical pulp according to the invention are set forth in the claims.
- It has been found that the problems associated with the prior art can be substantially reduced or avoided by means of the arrangement in accordance with the invention, wherein SuperFill® filler, advantageously calcium carbonate based SuperFill® filler, which has been prepared by precipitating an organic or inorganic salt, advantageously calcium carbonate, onto the surface of noil fibrils produced by refining from cellulose fibres and/or mechanical pulp fibre, is passed in a dilute suspension to a chemical pulp dryer to be mixed with chemical pulp. In addition to or instead of calcium carbonate, it is also possible to use another light-scattering component precipitated onto the surface of noil fibrils, such as an organic or inorganic salt, of which gypsum, calcium oxalate, barium sulphate, precipitated silicas and silicates may be mentioned as examples. The filler can also contain optionally a dispersing agent, such as, for example, sodium hexametaphosphate.
- In the method in accordance with the invention, the SuperFill® filler is passed in an aqueous suspension, the solids content of which is 0.1-35 wt. %, advantageously 2-6 wt. %, to a chemical pulp dryer and further to be mixed with chemical pulp. After that, the drying of the chemical pulp can be carried out by any method conventionally used for drying chemical pulp. Advanteously, the chemical pulp is dried into bales.
- Optionally, it is also possible to use a separate filler drying line in which SuperFill® filler is dried, recovered and then mixed, at a desired content in a range of 1-70 wt. %, advantageously 1-50 wt. %, with chemical pulp in connection with the manufacture of the chemical pulp before the chemical pulp is dried. After that, the chemical pulp is dried in a conventional manner, advantageously into bales. Drying the filler several times does not substantially reduce its bond potential.
- As a result, chemical pulp, advantageously chemical pulp bales, containing a desired amount of SuperFill® filler uniformly distributed in the chemical pulp, is/are obtained. When needed, the chemical pulp can be refined, but it can also be unrefined.
- Baled chemical pulp containing SuperFill® filler can be pulped in a conventional manner in a paper or board mill, and it can be added to any conventional pulp blend used in the manufacture of paper and board. Paper and board can be manufactured from the SuperFill® filler containing chemical pulp by methods known in themselves, from which methods the conventional separate filler addition phase is now omitted. SuperFill® filler containing chemical pulp can be added to pulp 1-100%.
- In plants manufacturing coating qualities, the differences in the amounts of pigment coming with broke can be compensated for in an appropriate manner, for example, by means of a combination of two chemical pulps having different SuperFill® filler contents.
- The method according to the invention and the thus manufactured chemical pulp have significant advantages over the arrangements of the prior art. The invention makes it possible to substantially improve the profit potential of the technology associated with SuperFill® filler, whereby both the manufacturing economy is improved and the number of application sites is increased. In accordance with the invention, it is possible to manufacture chemical pulp that contains a suitable filler amount for each paper and board application. The method makes it possible to avoid transporting large amounts of water, thereby saving energy, costs and spaces. The thus manufactured SuperFill® filler containing chemical pulp can be transported even long distances and it can also be used in manufacturing localities and in product applications which lack the utilities necessary for building a PCC plant, such as, for example, a sufficient source of carbon dioxide or suitable pulp processing devices. By this means it is also possible to manufacture chemical pulp of uniform quality containing a precisely predetermined amount of SuperFill® filler. It is possible to manufacture paper and board of more uniform quality, the properties of which are superior to those of the paper manufactured in a conventional manner.
- The invention makes a centralized SuperFill® filler production plant possible, which has a high capacity and which is capable of manufacturing filler at lower costs. The production plant may optionally also comprise a separate drying line for the filler.
- The method in accordance with the invention is illustrated by means of the following examples, but the invention is not meant to be limited to them.
- Manufacture of SuperFill® filler containing chemical pulp
- a) A SuperFill® filler suspension was prepared by a known method which is described, among other things, in FI patent 100729.
- b) SuperFill® filler containing chemical pulp was manufactured by passing 625 kg, calculated as solids, of the SuperFill® filler suspension manufactured in point a) and containing 500 kg of CaCo 3 and 125 kg of noil fibrils, so as to be mixed with chemical pulp (375 kg of unrefined or slightly refined birch pulp), which was then dried in a conventional manner, and 1000 kg of SuperFill® filler containing chemical pulp was obtained, calculated as solids.
- Use of SuperFill® filler containing chemical pulp in the manufacture of paper
- Paper was manufactured from the SuperFill® filler containing chemical pulp described in Example 1 in a conventional manner on a paper machine such that 1 ton of paper contained:
- 600 kg SuperFill® filler containing chemical pulp which contained
- 300 kg CaCo 3
- 225 kg birch pulp
- 75 kg noil fibrils
- 250 kg birch pulp
- 150 kg softwood pulp
- in total 1000 kg
- SuperFill® filler containing chemical pulp was added to the stock in the manufacture of paper such that the paper contained 30 wt. % of CaCO 3 and, of the chemical pulp in the paper, 76 wt. % was birch pulp and 24 wt. % was softwood pulp. The opacity, brightness, smoothness and formation of the thus manufactured paper were superior to those of the corresponding paper which was manufactured in a traditional manner and to which filler was added separately. Moreover, the runnability of the paper machine remained unchanged.
Claims (11)
1. A method for manufacturing filler containing chemical pulp, characterized in that the filler is prepared by precipitating a light-scattering organic or inorganic salt onto the surface of noil fibrils produced by refining from cellulose fibres and/or mechanical pulp fibre, and the thus prepared filler is passed in an aqueous suspension to a chemical pulp dryer to be mixed with chemical pulp and the chemical pulp is dried or said filler is dried, mixed with chemical pulp before the chemical pulp is dried, and the chemical pulp is dried.
2. A method as claimed in claim 1 , characterized in that the chemical pulp is dried into bales.
3. A method as claimed in claim 1 or 2, characterized in that the light-scattering organic or inorganic salt is calcium carbonate, gypsum, calcium oxalate, barium sulphate, precipitated silica or silicate, or a combination thereof.
4. A method as claimed in claim 1 , characterized in that the light-scattering organic or inorganic salt is calcium carbonate.
5. A method as claimed in claim 1 , characterized in that the solids content of the filler in the suspension is 0.1-35 wt. % and, when dried filler is mixed with chemical pulp, the amount of the filler is 1-70 wt.
6. A method as claimed in claim 5 , characterized in that the filler content in the suspension is 2-6 wt. %.
7. A method as claimed in claim 1 , characterized in that the chemical pulp has been refined.
8. A method as claimed in claim 1 , characterized in that the filler contains a dispersing agent.
9. A method for manufacturing paper or board, characterized in that filler containing chemical pulp or a combination of filler containing chemical pulps manufactured by the method as claimed in claim 1 is added to a stock blend which is used in the manufacture of paper or board and from which paper or board is made.
10. A method as claimed in claim 9 , characterized in that filler containing chemical pulp or a combination of filler containing chemical pulps is pulped and added to a stock blend which is used in the manufacture of paper or board and from which paper or board is made.
11. The use of filler containing chemical pulp or a combination of filler containing chemical pulps manufactured by the method as claimed in claim 1 in the manufacture of paper or board.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20012073A FI117715B (en) | 2001-10-25 | 2001-10-25 | A method for improving the economy of manufacture and use of a filler |
| FI20012073 | 2001-10-25 | ||
| PCT/FI2002/000821 WO2003035979A1 (en) | 2001-10-25 | 2002-10-23 | Method for manufacturing filler containing chemical pulp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20040244930A1 true US20040244930A1 (en) | 2004-12-09 |
Family
ID=8562125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/493,381 Abandoned US20040244930A1 (en) | 2001-10-25 | 2002-10-23 | Method for manufacturing filler container chemical pulp |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20040244930A1 (en) |
| EP (1) | EP1448851B1 (en) |
| JP (1) | JP2005538258A (en) |
| CN (1) | CN1318693C (en) |
| AU (1) | AU2002335317B2 (en) |
| CA (1) | CA2463669A1 (en) |
| ES (1) | ES2422329T3 (en) |
| FI (1) | FI117715B (en) |
| NZ (1) | NZ532431A (en) |
| PT (1) | PT1448851E (en) |
| WO (1) | WO2003035979A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060060318A1 (en) * | 2002-10-24 | 2006-03-23 | Petri Silenius | Method for manufacturing paper and board |
| US20090114356A1 (en) * | 2005-06-23 | 2009-05-07 | M-Real Oyj | Method of Producing a Fibrous Web |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2922856Y (en) * | 2006-03-18 | 2007-07-18 | 谢晓辉 | Anti-bacteria women's napkin capable of degradating |
| CN104594116A (en) * | 2014-12-22 | 2015-05-06 | 金东纸业（江苏）股份有限公司 | Composite filler and preparation method thereof as well as pulp and paper applying the composite filler |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1812832A (en) * | 1928-12-11 | 1931-06-30 | Raffold Process Corp | Filled pulp and method of making the same |
| US1891730A (en) * | 1928-05-25 | 1932-12-20 | Brown Co | Composition for and method of papermaking |
| US3220546A (en) * | 1962-05-28 | 1965-11-30 | Champion Papers Inc | Vibrating treatment for fiber recovery from waste effluents |
| US5527432A (en) * | 1994-01-28 | 1996-06-18 | Advanced Fiber Technology, Inc. | Method of dry separating fibers from paper making waste sludge and fiber product thereof |
| US6251222B1 (en) * | 1995-06-29 | 2001-06-26 | Metsa-Serla | Filler for use in paper manufacture and procedure for producing a filler |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE462108B (en) * | 1987-09-22 | 1990-05-07 | Air Laid Tissue As | PREPARATION OF TORR-SIZED TISSUE PAPER, WHICH A DIFFERENT MASS IS USED |
| GB8807445D0 (en) * | 1988-03-28 | 1988-05-05 | Allied Colloids Ltd | Pulp dewatering process |
| FI100670B (en) * | 1996-02-20 | 1998-01-30 | Metsae Serla Oy | Process for adding filler to cellulose fiber based m assa |
| US6074524A (en) * | 1996-10-23 | 2000-06-13 | Weyerhaeuser Company | Readily defibered pulp products |
| SE515690C2 (en) * | 1999-04-16 | 2001-09-24 | Korsnaes Ab | Methods of preparing fluff pulp, fluff pulp for absorption products, absorption products and use of fluff pulp or absorption products in hygiene products |
-
2001
- 2001-10-25 FI FI20012073A patent/FI117715B/en not_active IP Right Cessation
-
2002
- 2002-10-23 AU AU2002335317A patent/AU2002335317B2/en not_active Ceased
- 2002-10-23 US US10/493,381 patent/US20040244930A1/en not_active Abandoned
- 2002-10-23 WO PCT/FI2002/000821 patent/WO2003035979A1/en active Application Filing
- 2002-10-23 JP JP2003538467A patent/JP2005538258A/en not_active Withdrawn
- 2002-10-23 CA CA002463669A patent/CA2463669A1/en not_active Abandoned
- 2002-10-23 ES ES02801927T patent/ES2422329T3/en not_active Expired - Lifetime
- 2002-10-23 NZ NZ532431A patent/NZ532431A/en not_active IP Right Cessation
- 2002-10-23 CN CNB028211049A patent/CN1318693C/en not_active Expired - Lifetime
- 2002-10-23 PT PT2801927T patent/PT1448851E/en unknown
- 2002-10-23 EP EP02801927A patent/EP1448851B1/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1891730A (en) * | 1928-05-25 | 1932-12-20 | Brown Co | Composition for and method of papermaking |
| US1812832A (en) * | 1928-12-11 | 1931-06-30 | Raffold Process Corp | Filled pulp and method of making the same |
| US3220546A (en) * | 1962-05-28 | 1965-11-30 | Champion Papers Inc | Vibrating treatment for fiber recovery from waste effluents |
| US5527432A (en) * | 1994-01-28 | 1996-06-18 | Advanced Fiber Technology, Inc. | Method of dry separating fibers from paper making waste sludge and fiber product thereof |
| US6251222B1 (en) * | 1995-06-29 | 2001-06-26 | Metsa-Serla | Filler for use in paper manufacture and procedure for producing a filler |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060060318A1 (en) * | 2002-10-24 | 2006-03-23 | Petri Silenius | Method for manufacturing paper and board |
| US8491755B2 (en) * | 2002-10-24 | 2013-07-23 | M-Real Oyj | Method for manufacturing paper and board |
| US20090114356A1 (en) * | 2005-06-23 | 2009-05-07 | M-Real Oyj | Method of Producing a Fibrous Web |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2002335317B2 (en) | 2007-01-04 |
| FI20012073A (en) | 2003-04-26 |
| CN1318693C (en) | 2007-05-30 |
| NZ532431A (en) | 2006-02-24 |
| FI20012073A0 (en) | 2001-10-25 |
| CN1575364A (en) | 2005-02-02 |
| EP1448851B1 (en) | 2013-03-06 |
| ES2422329T3 (en) | 2013-09-10 |
| CA2463669A1 (en) | 2003-05-01 |
| PT1448851E (en) | 2013-06-04 |
| WO2003035979A1 (en) | 2003-05-01 |
| JP2005538258A (en) | 2005-12-15 |
| FI117715B (en) | 2007-01-31 |
| EP1448851A1 (en) | 2004-08-25 |
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