CN101203644A - Method of producing a fibrous web - Google Patents
Method of producing a fibrous web Download PDFInfo
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- CN101203644A CN101203644A CNA200680022555XA CN200680022555A CN101203644A CN 101203644 A CN101203644 A CN 101203644A CN A200680022555X A CNA200680022555X A CN A200680022555XA CN 200680022555 A CN200680022555 A CN 200680022555A CN 101203644 A CN101203644 A CN 101203644A
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- fibrous web
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- 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
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
-
- 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
- D21H17/70—Inorganic compounds forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
Abstract
A method of manufacturing a fibrous web comprising a filler. According to the method, the filler is fed into the fibre slush and a fibrous web is formed of the filler-bearing fibre slush, and this web is dried at the paper or cardboard machine. The filler used is a composite material which comprises cellulose or lignocellulose fibrils, onto which light- scattering material particles have been precipitated. According to the present invention, the filler is brought into contact with the dispersant before it is mixed into the fibre slush. With this solution it is possible to significantly improve the light-scattering properties of papers and cardboards, without decreasing the retention of the filler.
Description
The present invention relates to contain the method for the fibrous web (fibrous web) of filler according to the manufacturing of the preamble of claim 1.
In these class methods, the filler adding is contained in the slurry (slush) of string, after this fiber slurry forms fibrous web, and it is dry on paper or board machine.
The invention still further relates to purposes according to claim 14.
FI patent specification 100729 has been described the filler that uses in the papermaking, and it comprises by being deposited to the porous aggregates that the lip-deep calcium carbonate particle of fine fibre (fines) forms.According to this patent specification, this new packing is characterised in that calcium carbonate has been deposited on the tiny fibril of being made by method for refining by cellulose fibre and/or mechanical pulp fiber.The Size Distribution of fines fraction in most of the cases equals the P100 fraction of mesh screen.Hereinafter, also use its ProductName " SuperFill " to call this filler.
According to described patent specification, use this filler can improve the calcium carbonate percentage of paper, every Gram Mass (grammage) of paper reduces in this case.In the product group with higher relatively fresh filler percentage, described product produces remarkable advantage.
In the present invention, " drawing paper " is meant books that for example are used for placard, book cover, advertisement, map, band illustration and the paper type that is used as archival paper.In other words, they are used to pay attention to the purposes of smoothness, glossiness and quality of colour.
In the drawing paper of coating, the amount of pigment in the waste paper is big, and this has limited the amount of fresh filler, and other compounded mix also is restricted as SuperFill.Therefore, in these cases, for example can not making full use of, SuperFill improves the ability of paper light scattering.
The objective of the invention is to eliminate the defective relevant, and create the method for brand-new production paper and like fibrous product with prior art.Especially, the objective of the invention is to create a kind of method that can be used for making fiber product with favorable mechanical and drawing performance.Another object of the present invention is to create a kind of solution that improves the light scattering coefficient of paper under low fresh filler percentage.
The present invention is based on such theory---by allocate the uniformity that dispersant improves filler distribution in compounded mix, in the case, the agglomeration of calcium carbonate crystal reduces, and has improved light scattering thus.
In applying filler, dispersant is mainly used in the pumping of improving the filler slurry previously.Document mentions that dispersant can be used to improve uniformity (Weigl, J. and Ritter, E., " the DieBedeutung der of filler distribution
Und-form
Sowie deren Verteilungenbei der SC-Papierherstellung ", Wochenblatt f ü r Papierfabrikation, 1995, no.17,739-747 page or leaf).
The character of compounded mix is again because of using multiple pigment to change.Correspondingly, the EP patent application discloses 0 892 019 and has described CaCO
3Or how another kind of insoluble Chinese white is deposited on the fine fibre (fibril).After this, add another pigment, generate composite pigment thus, this pigment and expensive pigment (TiO so that the pigment of precipitation is bonded together second pigment and fine fibre
2) itself compare better and combine with paper.
When dispersant used with conventional filler, the retention of this filler was greatly lost.Beat all is to have been found that now situation is really not so when operating according to the present invention.Reason is that the compounded mix of SuperFill and so on also can be retained on the paper (or corresponding fibrous web) when disperseing.In this respect, it looks obviously different with conventional filler.
Therefore, according to the present invention, use compounded mix as the light scattering of the filler in paper and the cardboard with the improvement fibrous web.This filler with contact with dispersant before fiber slurry mixes.More specifically, according to the present invention, fibrous web (for example paper or cardboard) is main to be feature with the content of stating in claim 1 characteristic.
According to purposes of the present invention is feature with the content of statement in the claim 14 again.
Obtain remarkable advantage with the present invention.Thus, the present invention can improve the light scattering of paper and cardboard under the situation that does not reduce filler retention.According to the present invention, filler is evenly distributed on all three directions, and use the dispersant (wherein having discussed the use of the filler of particulate form) in the above-mentioned solution mainly to cause the improvement that distributes on the z-direction.
The solution that this paper proposes is the improved light scattering of special generation in the quality of the less relatively paper of the percentage of filler (particularly fresh filler).The especially above-mentioned drawing paper of this series products: paper that uses in placard paper, book cover and the advertisement and cardboard, map paper, illustration class books paper and archival paper.
To investigate the present invention in more detail by accompanying drawing and detailed explanation below.
Fig. 1 has shown the column diagram of the light scattering coefficient of the paper that contains three kinds of different fillers.
In the method for the invention, on for example paper machine or lap machine, the known method preparation of employing itself contains the fibrous web of filler. Be described in more detail below this manufacture process.
Filler in the fibrous web is composite, and it comprises cellulose or lignocellulosic fibril, has precipitated the light-scattering material particle on it. In order to improve the light scattering of fibrous web, filler contacted with dispersant before sneaking into fiber slurry. At least most of dispersant is attached on the material particle of filler.
The amount of dispersant changes with dispersant and material particle. For the upper limit of determining that dispersant adds, can followingly carry out in practice: form the aqueous dispersion of mineral particle (not containing fibril matrix), after this in this dispersion, add dispersant. Thus, the dispersant upper limit of adding is amount identical when producing minimum slurry viscosity. Usually, the viscogram that becomes with the amount of dispersant is U-shaped, in the case, in the present invention, selects the amount corresponding with U-shaped bottom as the addition of dispersant.
Used dispersant can be traditional anionic polymer, such as the anionic polyacrylate, and for example anionic Sodium Polyacrylate, or polyphosphate. Sodium Polyacrylate is sold with ProductName Fennodispo A 40 and A 41 (supplier Kemira Oyj), and wherein A represents acrylates, and 40 and 41 indicate respectively the percentage of its aqueous solution. Another corresponding product is Dispex N40, and it also is Sodium Polyacrylate, and supplier is Ciba Specialty Chemicals. Also can use amino alcohol.
For above-mentioned material, addition is about 0.05-1 % by weight of fibrous web dry weight. Usually, suitable addition is about 0.08-0.5 % by weight, especially about 0.1-0.35 % by weight, and optimum is about 0.1-0.3 % by weight. These boundaries are especially relevant with anionic polyacrylate, especially anionic Sodium Polyacrylate.
The present invention is particularly suitable for comprising the fibrous web of a small amount of or average magnitude filler. Usually, the percent of total of filler is about 25 % by weight of this paper web dry material to the maximum, especially is about 20 % by weight to the maximum, preferably is about 15 % by weight to the maximum. Minimum percentage is about 0.1 % by weight. The fresh feed amount that comprises this filler of compounded mix is suitably for about 0.1-15 of the dry of the paper web that will prepare, preferably approximately 0.5-12 % by weight most.
Filler used among the present invention is especially derived from the fibril available from chemical pulp. At this, chemical pulp refers to cross with the paper pulp with the cellulose fibre delignification with the boiling chemical treatments. According to a preferred embodiment, by making with extra care to obtain fibril with the paper pulp that sulfate process or another basic process are made. The present invention is not only applicable to modified chemical paper pulp, also is suitable for the fibril that modification is obtained by chemistry-machinery and mechanical pulp.
Usually, the average thickness of cellulose or lignocellulosic fibril is less than 5 microns, usually less than 1 micron. This fibril has following one or both features:
A. they are corresponding to the fraction of passing 50 (or preferred 100) sieve mesh; With
B. their average thickness is 0.01-10 micron (preferred maximum 5 microns, more preferably maximum 1 micron), and its average length is the 10-1500 micron.
By the original material with refining this fibril of paper pulp refiner, promptly cellulose or other fiber base fine fibre are with its fibrillation.When needs, can use sieve to separate required fraction, but be not always to need this fine fibre classification.Fraction P50-P400 is the fibril fraction that is fit to.The preferred refiner that uses with groove line scraper (grooved blades).
The light diffusing particles of filler is inorganic or organic salt, can be formed by precipitating in moisture intermediate agent by its original material.This compounds is calcium carbonate, calcium oxalate, calcium sulfate, barium sulfate and composition thereof.This material particle is deposited on the fiber.With respect to the fibril amount, the amount of inorganic salt compound is calculated as about 0.0001-95 weight % by the amount of filler, 0.1-90 weight % preferably approximately, and the about 60-80 weight of optimum % is calculated as about 0.1-80 weight %, preferably approximately 0.5-50 weight % by paper.
Especially be basic description the present invention with the product of FI patent specification 100729 below.But, it is evident that the present invention can carry out necessary change and be applied to other the said goods by the original material to light scattering pigment.
Make filler by inorganic pigment being deposited on the tiny fibril surface of making by cellulose fibre and/or mechanical pulp fiber.For example the precipitation of calcium carbonate can be carried out as follows: may comprise the calcium hydroxide aqueous solution of solid hydrogen calcium oxide and comprise carbanion and the compound that is partly dissolved at least in the water adds in the aqueous slurry of fibril.Can also introduce carbon dioxide at aqueous phase.Exist under the situation of calcium hydroxide, this carbon dioxide generates calcium carbonate.Generate pearl calcium carbonate crystal accumulation body, it is by fibril, and promptly fine filament combines, and wherein calcium carbonate particle precipitates and is attached on the long filament of fine fibre.Fine filament forms the pearl long filament with calcium carbonate, and it mainly is similar to pearl necklace when piling up.In water (slurry), the effective volume of aggregation and the ratio between the quality are compared very big with the corresponding ratio of the calcium carbonate that is used as conventional filler.The term effective volume is meant the volume that pigment is required at this.
The diameter of calcium carbonate particle is about 0.1-5 micron in the aggregation, usually about 0.2-3 micron.Fraction P50 (or P100)-P400 that the size of fibril is especially sieved corresponding to paper web.In this filler, at least 80%, preferred even light scattering pigment particles 90% precipitation is attached on the fibril.
According to the present invention, the volume efficiency of pigment particles is (filler weight) at least 60 weight %, preferred 70 weight % or higher, but be lower than 85 weight %.In this scope, on paper machine or board machine, realize good dehydration, also realized gas permeability constant in the fibrous web.
Compounded mix is used the dispersant modification before in adding paper machine or board machine.Can mix in mixing channel with this filler by dispersant and carry out modification simply, wherein in mixed process, make dispersant adsorption or otherwise be attached on the mineral particle at least of this filler scheduled volume.Incorporation time especially is about 1 minute-24 hours, and optimum is about 5 minutes-10 hours.Especially under higher relatively dry matter percentage, mix this percentage even can improve because of adding dispersant.Usually, dry matter percentage is about 40-80 weight %.
Except that mixing channel, also can use continuous mixer, wherein, in pipeline, carry out mixing of filler slurry and dispersant, may be by means of static mixer at pipe interior.
Add the major part of the dispersant in this filler dispersion to, at least 80 weight % usually, preferably at least 90 weight % are attached on this filler well enough so that it can not come off from filler under head box (headbox) condition substantially.In head box, any remaining free dispersant for example can easily be attached on the particulate filler that may circulate weak point from paper machine or board machine to head box or long recirculated water.If the dispersion conventional filler, the retention of this class filler significantly reduces.
Therefore, the dispersant that do not adhere to of any maintenance (part) preferred cycle is got back in elutriation stage of compounded mix so that it is attached on the just in time identical filler as far as possible effectively.
With the compounded mix charging that disperses and sneak into fiber slurry.In the case, the fiber raw material of paper or board pulp at first in a manner known way slurrying to suitable denseness (usually to approximately the percentage of solids of 0.1-1%).Be preferably in the above-mentioned filler that in fiber slurry, adds about 1-25 weight % of the fibre weight that is generally this fibre pulp in the head box of paper machine or board machine.In practice, at least when the paper of making coating and cardboard, excessive so that amount fresh feed of the amount of pigment must be limited in less than the 15 weight % that add the fiber dry weight in the head box in the waste paper.
The percentage of compounded mix is at least 20 weight % in the filler total amount of paper web, preferably about at least 30 weight %, optimum at least 40 weight %, especially 50 weight %.More preferably, the 75-100 weight % of described filler is a compounded mix.
In paper machine or board machine, become the width of cloth to form paper or board web fibre pulp.After this, this paper web is turned to drying section by press section, be dried with known method own at this.With the fibrous web drying, and can be coated with, and choose wantonly and for example carry out post processing by the calendering method.
Also can make multi-layered product, it especially comprises filler of the present invention in this product surface layer.Multilayer becomes width of cloth technology to can be used for making this series products.For example in the publication application 824 157 suitable paper pulp charging structure has been described at FI patent specification 105 118 and EP.Multilayer head box optimum uses with folder net formula former (gap former).In this type of device, the online slurry stream (slice jet) that will be formed by head box feeds between the double layer of metal silk screen (wire), and by woven wire on two different directions from paper pulp except that anhydrating.Adopt folder net formula former that fine fibre is accumulated on this laminar surface, produce the arc filler distribution thus---be similar to the shape of smile.When the multilayer head box uses with folder net formula former, inject paper or cardboard paper pulp by said method layering between woven wire, produce required sandwich construction thus simply.The product of the layer thickness of the thickness that this technology also can be used for making layer when using conventional multilayer technique.
Paper manufactured according to the present invention or board product can be coated with, or it can uncoatedly promptly transport.
Coating can be carried out with single application or secondary coating method, and therefore, the coating slurry can be as the single application slurry with as pre-coating and surface coated slurry.Triple coatings also are fine.Usually, coating colorant of the present invention comprises at least a pigment or pigment composition, at least a adhesive of 0.1-30 weight portion and its itself known additives of 1-10 weight portion of 10-100 weight portion.The example of this type of pigment is winnofil, grinding calcium carbonate, calcium sulfate, calcium oxalate, alumina silicate, kaolin (aluminium hydrosilicate), aluminium hydroxide, magnesium silicate, talcum (hydrated magnesium silicate), titanium dioxide and barium sulfate, and their mixture.Also can use synthetic dyestuff.In above-mentioned pigment, main pigment is kaolin, calcium carbonate, winnofil and gypsum, and what it constituted dried solid in the coating mixture usually surpasses 50%.Calcined kaolin, titanium dioxide, satin white, aluminium hydroxide, sodium silicoaluminate and plastic pigment are additional pigment, and their amount is usually less than 25% of dried solid in this mixture.In special pigment, can mention extraordinary kaolin and calcium carbonate with barium sulfate and zinc oxide.
Coating mixture can be coated on the material web in a manner known way.The method that is used to be coated with paper and/or cardboard of the present invention can adopt traditional apparatus for coating to carry out, that is, undertaken by scraper coating or film coated or surface spraying (spraying and applying).
When at least one surface of coated paper web, preferred two form coating when surperficial, its every Gram Mass be the 5-30 gram/square metre.Can handle a uncoated side via for example top sizing method.
In addition, after this with this product off-line calender.Undoubtedly, also can on paper machine, (online) carry out calendering.
By method of the present invention, can make the material web of cellulose and lignocellulose, it has splendid impressionability, good smoothness and high opacity and brightness.At this, the material of " cellulose " typically refers to the material of paper or cardboard or corresponding cellulose, and it is derived from the raw material of lignocellulose-containing, especially wood or annual plant or perennial plant.Described material can be contain wooden or do not contain wooden, and can be by machinery, chemical-mechanical or chemical pulp preparation.This paper pulp and mechanical pulp can be bleaching or unbleached.This material can also contain recycled fiber, especially reclaims paper or reclaims cardboard.Every Gram Mass of the paper web that forms by this material usually can for 35 to 500 grams/square metre, especially about 50 to 450 grams/square metre do not wait.
Usually, every Gram Mass of body paper be 20-250 gram/square metre, preferred 30-80 gram/square metre.By be coated with 2-20 gram coating/square metre every side every Gram Mass be about 50-70 gram/square metre this class body paper and with this paper calendering, produce every Gram Mass and be the 50-110 gram/square metre, brightness be at least 90% and opacity be at least 90% product.
The following non-limiting examples illustration the present invention.Adopt following standard method to measure the measurement result of paper performance among the embodiment:
Surface texture: SCAN-P76:95
Air drag: SCAN-M8, P19
Use ratio between hard wood pulp and the soft wood pulp be 70/30 (table 1) and beating degree as the feedstock composition of 22.2SR (hardwood) and 25.3SR (cork), measure and disperse filler in order to improve the mode of light scattering coefficient.
Table 1
| Main raw material | Paper pulp | Percentage |
| Short stock | The hard wood pulp that mixes | 70％ |
| Long stuff | Soft wood pulp | 30％ |
By the viscosity (table 2) of measurement, measure dispersant dosage (with the percentage note of pigment) as the PCC filler slurry of the function of dosage.Minimum point by viscosity obtains suitable dosage ranges.Institute's consumption is 0.10,0.15 and 0.20 part of calcium carbonate.
Because this slurry contains the minute quantity solid material, the viscosity response not necessarily appears in this type of is measured.Therefore, the also measurement of the commercially available PCC that can concentrate, it has the crystal structure identical with SuperFill.Adopt suitable accuracy, regardless of the composition of slurry, best effort dosage can be identical.This material mainly is adsorbed on the calcium carbonate, but not is adsorbed on the fine fibre of paper pulp.
Use the no.2 mandrel, carried out viscosity measurement thus to prevent the SuperFill sedimentation in 15 seconds by rotation under 100rpm.
Table 2
| Content | Temperature ℃ | BF(m Pas) | |
| The non-dispersant Albacar LO of SuperFill " " that non-dispersant SuperFill has an A40 has the Albacar " " of A40 | - 0.10 0.15 0.20 0.10 0.15 0.20 | 20 20 20 20 20 20 20 20 | ～130 ～124 ～117 ～110 ～131 ～39 ～26 ～27 |
Selected dosage is (calcium carbonate) 0.2 part of dispersant (Kemira ' s Fennodispo A40), and it joins in the SuperFill filler.
Embodiment 2
When the measuring light scattering coefficient (table 3), use suitable dispersant dosage.Use PAC and be used for the anionic polyacrylamide of PCC as retention agent.The amount of used retention agent always remains minimum.
Table 3
| Tested number | 44 | |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Dosage | Chemistry/ | |||||||||
| Starch fillers | ||||||||||
| 1 filler 2 fillers 3 retention agents of raw material | C*BOND 35845 ALBACAR LO SUPERFILL Ref. have the SUPERFILL PAC 18 PERCOL HC 4000 (anionic) of A40 | ％ ″ ″ ″ ″ ″ | 0.50 10.0 0.25 0.04 | 0.50 20.0 0.25 0.04 | 0.50 10.0 0.25 0.02 | 0.50 20.0 0.25 0.02 | 0.50 10.0 0.25 0.02 | 0.50 20.0 0.25 0.02 | 0.50 0.25 0.02 | 0.50 0.25 0.02 |
In measuring process, use following adjustment (table 4).
Table 4
The advantage that obtains with the present invention shows in the accompanying drawings.In Fig. 1, for the SuperFill that disperses, the identical SuperFill that does not disperse with have the commercially available PCC (Albacar LO) that corresponding particle diameter distributes, be pushed into identical tensile figure level (39Nm/g) in the light scattering coefficient with paper.
Amount of filler is approximately 11%, and the ratio between hard wood pulp and the soft wood pulp is 70/30 as mentioned above, and beating degree is SR 22.2 (hard wood pulp) and 25.3 (soft wood pulps).
As shown in the figure, compare with the identical SuperFill filler that does not disperse, the dispersion of SuperFill greatly improves light scattering coefficient.The effect of disperseing is significantly, especially under the low or middle range percentage of filler.
Product is further analyzed, and found that regardless of the condition that changes, other character of paper (density, intensity, opacity and brightness) all keeps good.
Claims (18)
1. make the method for the fibrous web that contains filler, according to this method
-filler is sneaked in the fiber slurry, and
-form fibrous web by the fiber slurry that contains filler, and this paper web is dry on paper machine or board machine, thus
-use the composite that comprises cellulose or lignocellulose fibril as filler, precipitated the light-scattering material particle on it,
It is characterized in that
-in order to improve the light scattering of fibrous web, described filler contacted with dispersant before sneaking into fiber slurry.
2. according to the method for claim 1, the interpolation upper limit that it is characterized in that dispersant is the dispersant percentage corresponding with the MV minium viscosity of the water suspension that is formed by the mineral particle in dispersant and the filler.
3. according to the method for claim 1 or 2, it is characterized in that used dispersant is anionic polyacrylate or polyphosphate.
4. according to the method for claim 3, it is characterized in that used dispersant is the anionic polyacrylate, its percentage is about 0.05-0.3 weight % of fibrous web dry.
5. according to each method of aforementioned claim, it is characterized in that preparing fibrous web, its filler percentage is about 15 weight % of this paper web dry weight to the maximum.
6. according to each method of aforementioned claim, it is characterized in that filler comprises cellulose or lignocellulose fibril, by refining and screening preparation, and its thickness is less than 5 microns by string for they.
7. according to the method for claim 6, it is characterized in that the light-scattering material particle has been deposited on this type of fibril, its size is corresponding to the fraction of passing 50 mesh sieves, and/or its average thickness is the 0.1-10 micron, average length 10-1500 micron.
8. according to the method for claim 6 or 7, it is characterized in that the light-scattering material particle is inorganic salts, it can be formed by precipitating in moisture intermediate agent by its original material.
9. method according to Claim 8 is characterized in that the light-scattering material particle is calcium carbonate, calcium oxalate, calcium sulfate, barium sulfate or its mixture.
10. according to each method of aforementioned claim, the percentage that it is characterized in that inorganic salts in the filler weight is 75-85 weight %.
11. according to each method of aforementioned claim, it is characterized in that preparing fibrous web, wherein most of at least dispersant is attached on the material particle of filler.
12., it is characterized in that only comprising the fibril based composites basically as the filler that fresh material is added in the slurry according to each method of aforementioned claim.
13. according to each method of aforementioned claim, it is characterized in that preparing fibrous web, it not only comprises composite, also comprises the particulate filler that is carried by recirculated water.
14. dispersant improves the purposes of the light scattering of this type of fibrous web, this fibrous web comprises filler, filler comprises cellulose or lignocellulose fibril again and has been deposited to light scattering mineral particle on the fibril, and most of at least in the case dispersant is attached on the mineral particle of filler.
15. according to the purposes of claim 14, the corresponding dispersant percentage of the interpolation upper limit that it is characterized in that dispersant and the MV minium viscosity of the water suspension that is formed by the mineral particle in dispersant and the filler is identical.
16., it is characterized in that using anionic polyacrylate or polyphosphate as dispersant according to the purposes of claim 14 or 15.
17. according to the purposes of claim 16, it is characterized in that using percentage as the anionic polyacrylate of about 0.05-0.3 weight % of fibrous web dry as dispersant.
18. according to each purposes of aforementioned claim, it is characterized in that preparing fibrous web, its filler percentage is about 15 weight % of this paper web dry weight to the maximum.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20050683 | 2005-06-23 | ||
| FI20050683A FI122674B (en) | 2005-06-23 | 2005-06-23 | A method for manufacturing a fiber web |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101203644A true CN101203644A (en) | 2008-06-18 |
Family
ID=34778395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200680022555XA Pending CN101203644A (en) | 2005-06-23 | 2006-06-21 | Method of producing a fibrous web |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20090114356A1 (en) |
| EP (1) | EP1893807A4 (en) |
| JP (1) | JP5033125B2 (en) |
| CN (1) | CN101203644A (en) |
| BR (1) | BRPI0612278A2 (en) |
| CA (1) | CA2611272C (en) |
| FI (1) | FI122674B (en) |
| RU (1) | RU2393285C2 (en) |
| WO (1) | WO2006136651A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107624138A (en) * | 2015-06-02 | 2018-01-23 | 可泰克斯公司 | Method for making reclaim paper deinking |
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| US10577469B2 (en) | 2015-10-14 | 2020-03-03 | Fiberlean Technologies Limited | 3D-formable sheet material |
| US11155697B2 (en) | 2010-04-27 | 2021-10-26 | Fiberlean Technologies Limited | Process for the production of gel-based composite materials |
| CN113957739A (en) * | 2021-10-28 | 2022-01-21 | 山东天和纸业有限公司 | Method and equipment for improving lead retention rate of sketch paper |
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| FI120318B (en) * | 2004-06-23 | 2009-09-15 | M Real Oyj | Silicon containing starch composites, process for making them and use in making paper and paperboard |
| RU2472890C1 (en) * | 2011-08-11 | 2013-01-20 | Леонид Асхатович Мазитов | Method of obtaining fibrillated cellulose fibres |
| RU2504609C1 (en) * | 2012-06-21 | 2014-01-20 | Леонид Асхатович Мазитов | Method of producing composite material |
| RU2523465C1 (en) * | 2013-02-28 | 2014-07-20 | Леонид Асхатович Мазитов | Method of obtaining calcium sulphate-based sorbent on carrier from cellulose fibres |
| ES2722550T3 (en) * | 2015-06-03 | 2019-08-13 | Schattdecor Ag | Fibrous support material for the manufacture of a porous liner support paper or a prepreg, and manufacturing procedures |
| SE540790C2 (en) * | 2016-02-12 | 2018-11-13 | Stora Enso Oyj | Calcium carbonate precipitated on natural fibers and method for the production thereof |
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| FR2492425A1 (en) * | 1980-10-21 | 1982-04-23 | Gascogne Papeteries | PROCESS FOR THE PREPARATION BY PAPER TECHNIQUES OF A SHEET MATERIAL WITH IMPROVED MACHINE RETENTION, SHEET MATERIAL OBTAINED AND ITS APPLICATION IN PARTICULAR IN THE FIELD OF PRINTING WRITING, PACKAGING AND COATINGS |
| US4650521A (en) * | 1983-07-14 | 1987-03-17 | Georgia Kaolin Company, Inc. | Processing of kaolinitic clays at high solids under acidic conditions |
| GB9211822D0 (en) * | 1992-06-04 | 1992-07-15 | Tioxide Group Services Ltd | Composite pigmentary material |
| FI100729B (en) * | 1995-06-29 | 1998-02-13 | Metsae Serla Oy | Filler used in papermaking and method of making the filler |
| US6579410B1 (en) * | 1997-07-14 | 2003-06-17 | Imerys Minerals Limited | Pigment materials and their preparation and use |
| FR2787802B1 (en) * | 1998-12-24 | 2001-02-02 | Pluss Stauffer Ag | NOVEL FILLER OR PIGMENT OR MINERAL TREATED FOR PAPER, ESPECIALLY PIGMENT CONTAINING NATURAL CACO3, METHOD FOR MANUFACTURING SAME, COMPOSITIONS CONTAINING THEM, AND APPLICATIONS THEREOF |
| FI117870B (en) * | 2001-04-24 | 2011-06-27 | M Real Oyj | Coated fiber web and method of making it |
| FI117715B (en) * | 2001-10-25 | 2007-01-31 | M Real Oyj | A method for improving the economy of manufacture and use of a filler |
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2005
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2006
- 2006-06-21 CN CNA200680022555XA patent/CN101203644A/en active Pending
- 2006-06-21 BR BRPI0612278-7A patent/BRPI0612278A2/en not_active IP Right Cessation
- 2006-06-21 US US11/922,595 patent/US20090114356A1/en not_active Abandoned
- 2006-06-21 EP EP06764448A patent/EP1893807A4/en active Pending
- 2006-06-21 WO PCT/FI2006/000222 patent/WO2006136651A1/en active Application Filing
- 2006-06-21 CA CA2611272A patent/CA2611272C/en not_active Expired - Fee Related
- 2006-06-21 RU RU2007145593/12A patent/RU2393285C2/en not_active IP Right Cessation
- 2006-06-21 JP JP2008517521A patent/JP5033125B2/en not_active Expired - Fee Related
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| US10294371B2 (en) | 2009-03-30 | 2019-05-21 | Fiberlean Technologies Limited | Process for the production of nano-fibrillar cellulose gels |
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| CN106978748B (en) * | 2009-03-30 | 2019-08-06 | 纤维精益生产技术有限公司 | The method for producing nanometer fibrous cellulosic suspension |
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| US10053817B2 (en) | 2010-04-27 | 2018-08-21 | Fiberlean Technologies Limited | Process for the manufacture of structured materials using nano-fibrillar cellulose gels |
| US10633796B2 (en) | 2010-04-27 | 2020-04-28 | Fiberlean Technologies Limited | Process for the manufacture of structured materials using nano-fibrillar cellulose gels |
| US11155697B2 (en) | 2010-04-27 | 2021-10-26 | Fiberlean Technologies Limited | Process for the production of gel-based composite materials |
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| CN107624138A (en) * | 2015-06-02 | 2018-01-23 | 可泰克斯公司 | Method for making reclaim paper deinking |
| CN108026697B (en) * | 2015-09-17 | 2020-12-01 | 斯道拉恩索公司 | Surface sizing of dense membranes |
| CN108026697A (en) * | 2015-09-17 | 2018-05-11 | 斯道拉恩索公司 | The top sizing of fine and close film |
| US10577469B2 (en) | 2015-10-14 | 2020-03-03 | Fiberlean Technologies Limited | 3D-formable sheet material |
| US11384210B2 (en) | 2015-10-14 | 2022-07-12 | Fiberlean Technologies Limited | 3-D formable sheet material |
| US11932740B2 (en) | 2015-10-14 | 2024-03-19 | Fiberlean Technologies Limited | 3D-formable sheet material |
| CN113957739A (en) * | 2021-10-28 | 2022-01-21 | 山东天和纸业有限公司 | Method and equipment for improving lead retention rate of sketch paper |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2007145593A (en) | 2009-07-27 |
| WO2006136651A1 (en) | 2006-12-28 |
| RU2393285C2 (en) | 2010-06-27 |
| CA2611272C (en) | 2014-05-06 |
| EP1893807A4 (en) | 2012-01-25 |
| JP5033125B2 (en) | 2012-09-26 |
| JP2008544104A (en) | 2008-12-04 |
| US20090114356A1 (en) | 2009-05-07 |
| CA2611272A1 (en) | 2006-12-28 |
| FI122674B (en) | 2012-05-15 |
| BRPI0612278A2 (en) | 2010-11-03 |
| FI20050683A0 (en) | 2005-06-23 |
| EP1893807A1 (en) | 2008-03-05 |
| FI20050683A (en) | 2006-12-24 |
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