EP1448851B1 - Verfahren zur herstellung eines füllstoffhaltigen zellstoffs - Google Patents

Verfahren zur herstellung eines füllstoffhaltigen zellstoffs Download PDF

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Publication number
EP1448851B1
EP1448851B1 EP02801927A EP02801927A EP1448851B1 EP 1448851 B1 EP1448851 B1 EP 1448851B1 EP 02801927 A EP02801927 A EP 02801927A EP 02801927 A EP02801927 A EP 02801927A EP 1448851 B1 EP1448851 B1 EP 1448851B1
Authority
EP
European Patent Office
Prior art keywords
filler
chemical pulp
paper
board
superfill
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.)
Expired - Lifetime
Application number
EP02801927A
Other languages
English (en)
French (fr)
Other versions
EP1448851A1 (de
Inventor
Petri Silenius
Risto Kekki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Minteq UK Ltd
Original Assignee
M Real Oyj
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by M Real Oyj filed Critical M Real Oyj
Publication of EP1448851A1 publication Critical patent/EP1448851A1/de
Application granted granted Critical
Publication of EP1448851B1 publication Critical patent/EP1448851B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 chemical pulp containing filter, 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.
  • EP 0 791 685 discloses a method for adding calcium hydroxide filler into a pulp based on cellulose fibres, wherein the pulp is fluidized and the filler is added into it. Calcium carbonate is precipitated with carbon dioxide.
  • FI patent 100729 corresponding to US 6, 251, 222 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.
  • 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.
  • 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.
  • an organic or inorganic salt advantageously calcium carbonate
  • another light-scattering component precipitated onto the surface of noil fibrils such as an gypsum, calcium oxalate, barium sulphate, precipitated silicas and silicates.
  • 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 SuperFilt ® 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: 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.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Claims (10)

  1. Verfahren zur Herstellung eines füllstoffhaltigen Zellstoffs, dadurch gekennzeichnet, dass der Füllstoff durch Ausfällen eines lichtstreuenden Salzes, das ausgewählt ist aus Calciumcarbonat, Gips, Calciumoxalat, Bariumsulfat, ausgefälltem Siliciumdioxid, Silikat und Kombinationen davon, auf die Oberfläche von Kämmlingfibrillen, die durch Raffinieren von Cellulosefasern und/oder Holzstofffasern erzeugt werden, hergestellt wird, wobei der auf diese Weise hergestellte Füllstoff in einer wässrigen Suspension zu einem Zellstofftrockner geleitet wird, um mit dem Zellstoff gemischt zu werden, und der füllstoffhaltige Zellstoff getrocknet wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der füllstoffhaltige Zellstoff zu Ballen getrocknet wird.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das lichtstreuende anorganische Salz Calciumcarbonat ist.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Feststoffgehalt des Füllstoffs in der Suspension 0,1 bis 35 Gew.-% beträgt.
  5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass der Füllstoffgehalt in der Suspension 2 bis 6 Gew.-% beträgt.
  6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Zellstoff raffiniert wurde.
  7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Füllstoff ein Dispergiermittel enthält.
  8. Verfahren zur Herstellung von Papier oder Pappe, dadurch gekennzeichnet, dass der füllstoffhaltige Zellstoff oder eine Kombination von füllstoffhaltigen Zellstoffen, die durch das Verfahren nach Anspruch 1 hergestellt werden, zu einem Suspensionsgemisch hinzugegeben werden, das bei der Herstellung von Papier oder Pappe verwendet wird, und Papier oder Pappe hergestellt wird.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass der füllstoffhaltige Zellstoff oder eine Kombination von füllstoffhaltigen Zellstoffen aufgeschlossen wird und zu einem Suspensionsgemisch gegeben werden, dass bei der Herstellung von Papier oder Pappe verwendet wird, und Papier oder Pappe hergestellt wird.
  10. Verwendung des füllstoffhaltigen Zellstoffs oder einer Kombination von füllstoffhaltigen Zellstoffen, die durch das Verfahren nach Anspruch 1 hergestellt werden, bei der Herstellung von Papier oder Pappe.
EP02801927A 2001-10-25 2002-10-23 Verfahren zur herstellung eines füllstoffhaltigen zellstoffs Expired - Lifetime EP1448851B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20012073 2001-10-25
FI20012073A FI117715B (fi) 2001-10-25 2001-10-25 Menetelmä täyteaineen valmistus- ja käyttötalouden parantamiseksi
PCT/FI2002/000821 WO2003035979A1 (en) 2001-10-25 2002-10-23 Method for manufacturing filler containing chemical pulp

Publications (2)

Publication Number Publication Date
EP1448851A1 EP1448851A1 (de) 2004-08-25
EP1448851B1 true EP1448851B1 (de) 2013-03-06

Family

ID=8562125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02801927A Expired - Lifetime EP1448851B1 (de) 2001-10-25 2002-10-23 Verfahren zur herstellung eines füllstoffhaltigen zellstoffs

Country Status (11)

Country Link
US (1) US20040244930A1 (de)
EP (1) EP1448851B1 (de)
JP (1) JP2005538258A (de)
CN (1) CN1318693C (de)
AU (1) AU2002335317B2 (de)
CA (1) CA2463669A1 (de)
ES (1) ES2422329T3 (de)
FI (1) FI117715B (de)
NZ (1) NZ532431A (de)
PT (1) PT1448851E (de)
WO (1) WO2003035979A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI115475B (fi) * 2002-10-24 2005-05-13 M Real Oyj Menetelmä paperin ja kartongin valmistamiseksi
FI122674B (fi) * 2005-06-23 2012-05-15 M Real Oyj Menetelmä kuituradan valmistamiseksi
CN2922856Y (zh) * 2006-03-18 2007-07-18 谢晓辉 一种可降解的抗菌卫生巾
CN104594116A (zh) * 2014-12-22 2015-05-06 金东纸业（江苏）股份有限公司 复合填料及其制备方法,应用其的浆料及纸张

Family Cites Families (10)

* Cited by examiner, † Cited by third party
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
SE462108B (sv) * 1987-09-22 1990-05-07 Air Laid Tissue As Framstaellning av torrformat tissuepapper, varvid en faergad massa anvaendes
GB8807445D0 (en) * 1988-03-28 1988-05-05 Allied Colloids Ltd Pulp dewatering process
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
FI100729B (fi) * 1995-06-29 1998-02-13 Metsae Serla Oy Paperinvalmistuksessa käytettävä täyteaine ja menetelmä täyteaineen va lmistamiseksi
FI100670B (fi) * 1996-02-20 1998-01-30 Metsae Serla Oy Menetelmä täyteaineen lisäämiseksi selluloosakuituperäiseen massaan
US6074524A (en) * 1996-10-23 2000-06-13 Weyerhaeuser Company Readily defibered pulp products
SE515690C2 (sv) * 1999-04-16 2001-09-24 Korsnaes Ab Sätt att framställa fluffmassa, fluffmassa för absorptionsprodukter, absorptionsprodukter och användning av fluffmassa eller absorptionsprodukter i hygienprodukter

Also Published As

Publication number Publication date
FI20012073A (fi) 2003-04-26
JP2005538258A (ja) 2005-12-15
ES2422329T3 (es) 2013-09-10
CN1318693C (zh) 2007-05-30
US20040244930A1 (en) 2004-12-09
EP1448851A1 (de) 2004-08-25
CA2463669A1 (en) 2003-05-01
WO2003035979A1 (en) 2003-05-01
PT1448851E (pt) 2013-06-04
AU2002335317B2 (en) 2007-01-04
NZ532431A (en) 2006-02-24
FI117715B (fi) 2007-01-31
FI20012073A0 (fi) 2001-10-25
CN1575364A (zh) 2005-02-02

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