EP1152086B1 - Verfahren zur Bildung einer mehrschichtigen und/oder mehrlagigen Faserstoffbahn - Google Patents
Verfahren zur Bildung einer mehrschichtigen und/oder mehrlagigen Faserstoffbahn Download PDFInfo
- Publication number
- EP1152086B1 EP1152086B1 EP01106092A EP01106092A EP1152086B1 EP 1152086 B1 EP1152086 B1 EP 1152086B1 EP 01106092 A EP01106092 A EP 01106092A EP 01106092 A EP01106092 A EP 01106092A EP 1152086 B1 EP1152086 B1 EP 1152086B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- calcium carbonate
- layer
- process according
- fiber
- fibers
- 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
Links
- 238000000034 method Methods 0.000 title claims description 31
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 64
- 239000002657 fibrous material Substances 0.000 claims abstract description 46
- 239000000835 fiber Substances 0.000 claims abstract description 45
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 31
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 15
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 15
- 239000000292 calcium oxide Substances 0.000 claims abstract description 14
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000654 additive Substances 0.000 claims abstract description 13
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 13
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 13
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000010893 paper waste Substances 0.000 claims description 2
- 229940088417 precipitated calcium carbonate Drugs 0.000 claims description 2
- 238000010008 shearing Methods 0.000 claims 2
- 208000004434 Calcinosis Diseases 0.000 claims 1
- 229920001131 Pulp (paper) Polymers 0.000 claims 1
- 230000008021 deposition Effects 0.000 claims 1
- 239000000123 paper Substances 0.000 abstract description 17
- 239000012510 hollow fiber Substances 0.000 abstract description 12
- 230000000996 additive effect Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 7
- 239000011111 cardboard Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011087 paperboard Substances 0.000 abstract description 3
- 239000001913 cellulose Substances 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 239000000725 suspension Substances 0.000 description 24
- 239000000945 filler Substances 0.000 description 10
- 235000011116 calcium hydroxide Nutrition 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000014759 maintenance of location Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 241000446313 Lamella Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010327 methods by industry Methods 0.000 description 2
- 241001248531 Euchloe <genus> Species 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- YDURNEXHAZKVLN-UHFFFAOYSA-L calcium;carbon dioxide;carbonate Chemical compound [Ca+2].O=C=O.[O-]C([O-])=O YDURNEXHAZKVLN-UHFFFAOYSA-L 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
- D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers
-
- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
- D21H27/38—Multi-ply at least one of the sheets having a fibrous composition differing from that of other sheets
Definitions
- the invention relates to a method for forming a multilayer and / or multi-layer fibrous web, in particular paper or cardboard web.
- a method is known from German published patent application DE 37 20 618 A1 in the paper manufacturing process to improve paper properties, especially to improve printability, if used of a three-channel headbox. It is provided that Fibers of different lengths are used, the short-fiber Substance component may contain filler and preferably directly in the middle of the layer structure to be formed is introduced.
- the aim of the invention is to provide an improved method to create the type mentioned, in which the previously mentioned disadvantages are eliminated and in a more economical manner in particular an increase in the enrichment of the outer layers of the Fibrous web with fillers possible beyond the previous limits is.
- this object is achieved according to the invention solved that at least one of the two outer layers and / or layers the fibrous web is produced using moist, disintegrated fiber material the wetted fiber surfaces at least partially at least calcium carbonate after addition of calcium oxide and / or Calcium hydroxide and after exposure to carbon dioxide was deposited.
- dry fiber surfaces can mean all wetted surfaces of the individual fibers. This is especially the case Case covered in which the fibers with the calcium carbonate both are loaded on their outer surface and inside (lumen).
- This Binding of calcium carbonate to the fiber surface is relatively strong. Thereby there is a high retention of the calcium carbonate of the outer layers or -Layers of the paper with little white water pollution and relatively less Calcium carbonate concentration of the suspension in the outer layers or layers in the headbox. If necessary, you can also use conventional How to further increase the calcium carbonate content of the layers or layers.
- the invention is not only in the formation of a fibrous web from in the z direction, i.e.
- Thickness direction coated fiber suspensions with different calcium carbonate, but basically also in the formation of a fibrous web from layers cut in the z direction Fibrous suspensions with the same calcium carbonate kept applicable.
- the invention can be used not only in the preferred multilayer sheet formation, but also fundamentally with conventional multi-layer sheet formation are used. It is essential that for the substances in whose outer layers or layers use a so-called "fiber loading" described as such in US-A-5,223,090. When in this The process described in the publication will apply to the entire fabric accordingly treated. Otherwise, when storing Calcium carbonate in the respective outer layer or layer, however, especially so proceed as described in US-A-5,223,090. The The content of this document is hereby incorporated by reference into the present Registration included.
- the calcium carbonate is expediently on the outer surfaces of the Hollow fibers attached, preferably in addition to both the inner Cavities as well as embedded in the walls of the hollow fibers becomes.
- the additive is thus applied to the "wetted" fiber surface, So both on the outer surface and on the inside Cavities and also deposited in the walls of the hollow fibers.
- Processes are used to form at least two and in particular at least three-layer or three-layer fibrous web both or only one of the outer layers or layers of the fibrous web using fiber material produced on its wetted Fibrous surfaces at least partially accumulate the least calcium carbonate has been.
- Both or only one outer layer or - location of the fibrous web are produced using fiber material, the hollow fibers at least partially with at least one additive were loaded, preferably again both on the outer surfaces the fibers as well as in the interior.
- At least two and in particular at least three-layer or three-layer fibrous web at least one of the two outer layers or layers with a higher one Calcium carbonate content generated as the at least one middle layer or layer.
- Precipitated calcium carbonate is transferred to the process wetted fiber surfaces.
- a preferred advantageous embodiment is characterized in that a calcium oxide and / or calcium hydroxide-containing agent is added to a moist, disintegrated fiber material so that at least some of it is associated with the water present in the fiber material and that the treated material is added to the calcium carbonate Carbon dioxide is applied to the fiber material in such a way that the addition of calcium carbonate to the wetted fiber surfaces results from a corresponding chemical reaction. This does not mean that 2 water of the fibrous suspension to be chemically reacted by addition of CaO and / or Ca (OH).
- the agent containing calcium oxide and / or calcium hydroxide expediently in a proportion of approximately 0.1 to approximately 50% by weight based on the dry weight of the fiber material in question.
- the fiber material is advantageously closed Containers loaded with carbon dioxide containing the carbon dioxide gas in question is put under pressure accordingly.
- the fiber material during a mixing process to which it is exposed to a particularly high shear effect with Carbon dioxide is applied.
- the mixing process is expediently carried out with a shear effect that is at least so high that an energy input of at least about 10 to 50 watt-hours per kilogram Fiber on a dry weight basis.
- the fiber material is preferred on the one hand pulp dissolved in pulper or waste paper with additives and on the other hand non-dried fiber ("never dried pulp ”) is used. Both uses bring depending on the application both process engineering (including short process times), process engineering (including good controllability) as well as cost-effective (including cost saving potential) Benefits.
- Figure 1 shows a simplified process diagram for possible treatment of pulp, which is then used to form at least one of the two outer layers of a multilayer fibrous web used becomes.
- the fibrous web can in particular be a paper or Trade cardboard web.
- the wetted fiber surfaces of the fiber material in question are used at least partially at least calcium carbonate after addition of calcium oxide and / or Calcium hydroxide and after exposure to carbon dioxide attached. Both calcium carbonate is deposited on the outer surfaces of the hollow fibers as well as an inclusion in the wetted internal cavities (lumens) and the walls of the Hollow fibers.
- the present fibrous stock material 10 is processed in a pulper 12 to a fibrous material 14, in which the fibers are then at least essentially already separated, that is to say separated.
- the fiber material 14 at least partially contains water. This can be present between the fibers as well as in the interior (lumens) and in the walls of the hollow fibers.
- the fiber material 14 can be provided, for example, in the form of a so-called "dewatered crumb pulp" (see US Pat. No. 5,223,090), which means that although water is stored in the hollow fibers of the fiber material 14, there is no free material in the fiber material Water is included.
- pulp or pulp or pulp that has been dissolved in pulp 12 can be used as fiber material 14 on the one hand, and on the other hand non-dried pulp (“never dried pulp”).
- the fiber material 14 is then fed to a collecting container 16 or the like, in which an agent 18 containing calcium oxide and / or calcium hydroxide (slaked lime) is added in such a way that at least a part thereof coincides with that in the fiber material, ie between the fibers, in the hollow fibers and associated in their walls, existing water.
- an agent 18 containing calcium oxide and / or calcium hydroxide slaked lime
- the fiber material 14 is fed to a "fiber loading” reactor 24.
- the fiber material 14 is then exposed to carbon dioxide (CO 2 ) in such a way that calcium carbonate (CaCO 3 ) is deposited on the wetted fiber surfaces.
- CO 2 carbon dioxide
- CaCO 3 calcium carbonate
- valve 26 for example designed as a rotary valve suitably treated fiber material 14 then the respective one outer layer assigned stock suspension feed of the headbox 28 of the paper machine 30 in question.
- the calcium oxide and / or calcium hydroxide can be in the collecting container 16 contained means 18, for example, in a proportion of about 0.1 up to about 50% by weight based on the dry weight of the fiber material in question be added.
- the reactor 24 expediently comprises a closed container, pressurized with the relevant carbon dioxide gas becomes.
- the fiber material 14 in this reactor 24 can be one Be subjected to mixing process, in which there is a particular higher Is exposed to shear. The exposure to carbon dioxide then takes place during the mixing process.
- This mixing process can for example with a shear effect, at least so It is high that there is an energy input of at least about 10 to about 50 Watt hours per kilogram of fiber on a dry weight basis.
- FIG. 3 shows a possible embodiment of a headbox 28 in FIG paper machine 30 shown in FIG. 1.
- the headbox 28 is in the z direction, i.e. in the thickness direction of the to be formed Fiber web 34, sectioned.
- sections are arranged one above the other Stock suspension feeders 36, 38 and 40 are provided, respectively into a corresponding section of a section divided by slats 42 Chamber 44 of the headbox 28 open. Between these also in the transverse direction y has correspondingly divided chamber 44 and a nozzle 46 the headbox 28 has a turbulence generator 48.
- the fins 42 also extend into the turbulence generator 48, so that this is also sectioned accordingly.
- Nozzle 46 Even the interior of the Nozzle 46 can be sectioned accordingly, for which purpose in the present case for example, slats 50 can be provided. This results in a Multi-layer headbox to form a multi-layer, in the present Case of a three-layer fibrous web 34.
- Each of the transversely y resultant section is respectively assigned to a mixer section 52 in which a portion of the suspension flow Q H is a partial suspension stream Q L admixed.
- These two partial suspension streams can have a different consistency, for example.
- the suspension partial stream Q H fed to the headbox 28, for example via a transverse distributor line 54 is fed to the various section mixers 52 via branch lines 56.
- the partial suspension flow Q L fed to the headbox 28 via a transverse distributor line 58 is fed to the various section mixers 52 via branch lines 60 and corresponding metering devices 62.
- the metering device 62 can comprise corresponding valves, for example.
- the mixed flow Q M obtained by a respective section mixer 52 is divided between the three stock suspension feeds 36, 38 and 40 of a respective section.
- each fiber material is supplied, in the hollow fibers of calcium carbonate is stored.
- the fiber material in question can a distributor line 68 running in the transverse direction is supplied, from that of a respective section resulting in the transverse direction branch the lines 64 assigned to the headbox 28.
- the various supply lines 64 each open at an angle ⁇ a feed line 70, via which the fiber material mixed with calcium carbonate a further additive, preferably diluent or White water, can be added.
- This additive can also be used for example again via transverse distribution lines 72 are fed, of which the various, the individual are in Branch off supply lines 70 assigned to the transverse direction of the sections.
- a valve 74 is provided in each of the feed lines 70.
- the angle ⁇ is expediently chosen so that the respective Dosing device 66 of the substance suspension feed 36 in question or 40 total current supplied remains constant regardless of the ratio, in which the dilution water is added.
- the various branch lines 60 can each open into the respective section mixer 52 at such an angle that the mixed flow Q M resulting at the outlet of the respective mixer 52 remains constant irrespective of the ratio in which the two partial substreams Q H and Q L to the headbox 28 are supplied.
- valves can also be provided, for example, between the cross line 54 and the section mixers 52, the mixed flow Q M in the case of a change in the ratio between the two partial suspension flows Q H and Q L then being actuated accordingly by both these valves and the valves 62 is kept constant.
Landscapes
- Paper (AREA)
- Multicomponent Fibers (AREA)
- Nonwoven Fabrics (AREA)
Description
- Figur 1
- ein vereinfachtes Prozessdiagramm zur möglichen Behandlung von Faserstoff, der anschließend zur Bildung einer jeweiligen Außenschicht der betreffenden Faserstoffbahn verwendet wird,
- Figur 2
- eine vereinfachte schematische Darstellung der bei der Behandlung des Faserstoffes initiierten chemischen Reaktionen und
- Figur 3
- eine schematische Darstellung eines Ausführungsbeispiels eines Stoffauflaufs der betreffenden Papiermaschine.
- 10
- Ausgangsmaterial
- 12
- Pulper
- 14
- Fasermaterial
- 16
- Sammelbehälter
- 18
- Calciumoxid und/oder Calciumhydroxid enthaltendes Mittel
- 20
- Presse
- 22
- Preßwasser
- 24
- Reaktor
- 26
- Ventil
- 28
- Stoffauflauf
- 30
- Papiermaschine
- 34
- Faserstoffbahn
- 34'
- Obere Schicht der Faserstoffbahn
- 34"
- Untere Schicht der Faserstoffbahn
- 36
- Stoffsuspensionszuführung
- 38
- Stoffsuspensionszuführung
- 40
- Stoffsuspensionszuführung
- 42
- Lamelle
- 44
- Kammer
- 46
- Düse
- 48
- Turbulenzgenerator
- 50
- Lamelle
- 52
- Sektionsmischer
- 54
- Verteilerleitung
- 56
- Zweigleitung
- 58
- Verteilerleitung
- 60
- Zweigleitung
- 62
- Dosiereinrichtung
- 64
- Zuleitung
- 66
- Dosiereinrichtung
- 68
- Verteilerleitung
- 70
- Zuleitung
- 72
- Verteilerleitung
- 74
- Ventil
- QF
- Fasermaterial
- QH
- Suspensionsteilstrom
- QL
- Suspensionsteilstrom
- QM
- Mischstrom
Claims (14)
- Verfahren zur Bildung einer mehrschichtigen und/oder mehrlagigen Faserstoffbahn (34), insbesondere Papier- oder Kartonbahn,
dadurch gekennzeichnet, daß wenigstens eine der beiden Außenschichten (34', 34") und/oder - lagen der Faserstoffbahn (34) unter Verwendung von feuchtem, desintegriertem Fasermaterial (14) erzeugt wird, an dessen benetzte Faseroberflächen zumindest teilweise wenigstens Calciumcarbonat nach Zusetzung von Calciumoxid und/oder Calciumhydroxid und nach Beaufschlagung mit Kohlendioxid angelagert wurde. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß Calciumcarbonat an den Außenflächen der Hohlfasern angelagert wird. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß Calciumcarbonat zusätzlich sowohl in die innenliegenden Hohlräume als auch in die Wandungen der Hohlfasern eingelagert wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß zur Bildung einer wenigstens zwei- und insbesondere wenigstens dreischichtigen bzw. -lagigen Faserstoffbahn (34) beide oder lediglich eine der Außenschichten (34', 34") bzw. -lagen der Faserstoffbahn (34) unter Verwendung von Fasermaterial (14) erzeugt werden, an dessen benetzte Faseroberflächen zumindest teilweise wenigstes Calciumcarbonat angelagert wurde: - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß zur Bildung einer wenigstens zwei- und insbesondere wenigstens dreischichtigen bzw. -lagigen Faserstoffbahn (34) wenigstens eine der beiden Außenschichten (34', 34") bzw. -lagen mit einem höheren Calciumcarbonatgehalt als die wenigstens eine Mittelschicht bzw. -lage erzeugt wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gehennzeichnet,
daß gefälltes Calciumcarbonat an die Faseroberflächen angelagert wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß zur Anlagerung von Calciumcarbonat einem feuchten Fasermaterial (14) ein Calciumoxid und/oder Calciumhydroxyd enthaltendes Mittel (18) so zugesetzt wird, daß zumindest ein Teil davon sich mit dem im Fasermaterial (14) vorhandenen Wasser assoziiert, und daß das so behandelte Fasermaterial (14) derart mit Kohlendioxid beaufschlagt wird, daß sich die Anlagerung von Calciumcarbonat an die Faseroberflächen durch eine entsprechende chemische Reaktion ergibt. - Verfahren nach Anspruch 7,
dadurch gekennzeichnet, daß das Calciumoxid und/oder Calciumhydroxyd enthaltende Mittel in einem Anteil von etwa 0,1 bis etwa 50 Gew.-% bezogen auf das Trockengewicht des betreffenden Fasermaterials (14) zugesetzt wird. - Verfahren nach Anspruch 7 oder 8,
dadurch gekennzeichnet, daß das Fasermaterial (14) in einem geschlossenen Behälter (24) mit Kohlendioxid beaufschlagt wird, der mit dem betreffenden Kohlendioxidgas entsprechend unter Druck gesetzt wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß das Fasermaterial (14) während eines Mischvorgangs, bei dem es einer insbesondere höheren Scherwirkung ausgesetzt ist, mit Kohlendioxid beaufschlagt wird. - Verfahren nach Anspruch 10,
dadurch gekennzeichnet, daß der Mischvorgang mit einer Scherwirkung erfolgt, die zumindest so hoch ist, daß sich ein Energieeintrag von wenigstens etwa 10 bis etwa 50 Wattstunden pro Kilogramm Faser auf Trockengewichtsbasis ergibt. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß zur Bildung einer zweischichtigen bzw. -lagigen Faserstoffbahn (34) lediglich eine der beiden Schichten bzw. -lagen der Faserstoffbahn (34) unter Verwendung von Fasermaterial (14) erzeugt wird, an dessen benetzte Faseroberflächen zumindest teilweise wenigstes Calciumcarbonat entsprechend angelagert wurde. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß als Fasermaterial (14) vorzugsweise in einem Pulper (12) aufgelöster Zellstoff oder aufgelöstes Altpapier mit Zuschlagsstoffen verwendet wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet , daß als Fasermaterial (14) nicht getrockneter Faserstoff ("never dried pulp") verwendet wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10021979 | 2000-05-05 | ||
DE10021979A DE10021979A1 (de) | 2000-05-05 | 2000-05-05 | Verfahren sowie Vorrichtung zur Bildung einer mehrschichtigen und/oder mehrlagigen Faserstoffbahn |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1152086A2 EP1152086A2 (de) | 2001-11-07 |
EP1152086A3 EP1152086A3 (de) | 2002-08-07 |
EP1152086B1 true EP1152086B1 (de) | 2004-06-02 |
Family
ID=7640928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01106092A Expired - Lifetime EP1152086B1 (de) | 2000-05-05 | 2001-03-13 | Verfahren zur Bildung einer mehrschichtigen und/oder mehrlagigen Faserstoffbahn |
Country Status (5)
Country | Link |
---|---|
US (1) | US6627042B2 (de) |
EP (1) | EP1152086B1 (de) |
AT (1) | ATE268411T1 (de) |
CA (1) | CA2345600A1 (de) |
DE (2) | DE10021979A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10117236A1 (de) * | 2001-04-06 | 2002-10-17 | Voith Paper Patent Gmbh | Verfahren und Vorrichtung zur Bildung einer Faserstoffbahn |
EP1426489A1 (de) * | 2001-06-06 | 2004-06-09 | Kemira Chemicals Oy | Verfahren zur herstellung eines mehrschichtigen zellstoffprodukts mit einer zwischenschichtigen ladung |
FI122074B (fi) * | 2002-10-24 | 2011-08-15 | M Real Oyj | Menetelmä kuitutuotteen valmistamiseksi |
SE534151C2 (sv) * | 2009-02-16 | 2011-05-10 | Stora Enso Ab | Process för tillverkning av papper eller kartong |
FI124831B (fi) * | 2010-03-10 | 2015-02-13 | Upm Kymmene Oyj | Menetelmä ja reaktori kalsiumkarbonaatin in-line-valmistamiseksi paperimassavirtaukseen |
FI125826B (fi) * | 2010-08-04 | 2016-02-29 | Nordkalk Oy Ab | Menetelmä paperin tai kartongin valmistamiseksi |
FI125278B (fi) * | 2010-08-20 | 2015-08-14 | Upm Kymmene Corp | Menetelmä kalsiumkarbonaatin saostamiseksi sekä menetelmän käyttö |
FI124859B (fi) | 2011-06-21 | 2015-02-27 | Upm Kymmene Corp | Painopaperituote sekä menetelmä ja järjestelmä painopaperituotteen valmistamiseksi |
US10280565B2 (en) | 2016-02-26 | 2019-05-07 | Ecolab Usa Inc. | Drainage management in multi-ply papermaking |
DE102016121039A1 (de) * | 2016-11-04 | 2018-05-09 | Voith Patent Gmbh | Vorrichtung und Verfahren zur Herstellung einer Faserstoffbahn |
Family Cites Families (12)
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DE1940321A1 (de) * | 1968-08-08 | 1970-07-30 | Salomon Neumann | Verfahren zur Herstellung eines faserigen Fuellmaterials |
FI75200B (fi) | 1986-07-04 | 1988-01-29 | Valmet Oy | Foerfarande vid pappersframstaellningsprocess foer foerbaettring av egenskaper hos papperet, saerskilt dess retention. |
US5223090A (en) * | 1991-03-06 | 1993-06-29 | The United States Of America As Represented By The Secretary Of Agriculture | Method for fiber loading a chemical compound |
FR2689530B1 (fr) | 1992-04-07 | 1996-12-13 | Aussedat Rey | Nouveau produit complexe a base de fibres et de charges, et procede de fabrication d'un tel nouveau produit. |
DE4237309A1 (de) | 1992-11-05 | 1993-04-08 | Voith Gmbh J M | |
FI92729C (fi) * | 1993-10-29 | 1994-12-27 | Valmet Paper Machinery Inc | Monikerrosperälaatikon massansyöttöjärjestelmä ja menetelmä monikerrosperälaatikkokäytössä |
DE4436317C2 (de) * | 1994-10-11 | 1998-10-29 | Nalco Chemical Co | Verfahren zur Verbesserung der Retention von Mineral-Füllstoffen und Cellulosefasern auf einem Cellulose-Faserbogen |
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 |
US6210535B1 (en) * | 1995-06-01 | 2001-04-03 | Valmet Corporation | Stock feed system for a multi-layer headbox and method in the operation of a multi-layer headbox |
DE19627669C2 (de) | 1996-07-10 | 2001-03-01 | Stora Enso Publication Paper A | Verfahren zur Verbesserung von Druckpapieren |
FI115646B (fi) * | 1996-11-26 | 2005-06-15 | Metso Paper Inc | Paperikoneen/kartonkikoneen monikerrosperälaatikko |
WO1999049133A1 (en) * | 1998-03-23 | 1999-09-30 | Pulp And Paper Research Institute Of Canada | Method for producing pulp and paper with calcium carbonate filler |
-
2000
- 2000-05-05 DE DE10021979A patent/DE10021979A1/de not_active Withdrawn
-
2001
- 2001-03-13 EP EP01106092A patent/EP1152086B1/de not_active Expired - Lifetime
- 2001-03-13 DE DE50102455T patent/DE50102455D1/de not_active Expired - Fee Related
- 2001-03-13 AT AT01106092T patent/ATE268411T1/de not_active IP Right Cessation
- 2001-05-03 CA CA002345600A patent/CA2345600A1/en not_active Abandoned
- 2001-05-03 US US09/848,076 patent/US6627042B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ATE268411T1 (de) | 2004-06-15 |
DE50102455D1 (de) | 2004-07-08 |
DE10021979A1 (de) | 2001-11-08 |
US20010045265A1 (en) | 2001-11-29 |
EP1152086A3 (de) | 2002-08-07 |
EP1152086A2 (de) | 2001-11-07 |
CA2345600A1 (en) | 2001-11-05 |
US6627042B2 (en) | 2003-09-30 |
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