CN1279243C - Fibrous web and process for preparation thereof - Google Patents
Fibrous web and process for preparation thereof Download PDFInfo
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- CN1279243C CN1279243C CN02812111.2A CN02812111A CN1279243C CN 1279243 C CN1279243 C CN 1279243C CN 02812111 A CN02812111 A CN 02812111A CN 1279243 C CN1279243 C CN 1279243C
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- filler
- fiber web
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- paper
- spacer screen
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
The invention relates to a fiber web and a method for preparing it. The fiber web comprises a filler-containing base web, which is possibly coated with a pigment-containing coating layer. According to the invention, 5-100% of the filler in the base web is made up of cellulose fibrils or lignocellulose fibrils with light-scattering material particles deposited thereon. These coated cellulose fibrils or lignocellulose fibrils constitute at maximum approx. 70% of the weight of the base web. The base web according to the invention contains more than 20% less retention agents than does a web which has the same formation but in which more than 95% of the filler is made up of filler particles known per se.
Description
The present invention relates to fiber web according to the preamble of claim 1.
Such a a kind of fiber web, in general, comprising a kind ofly can have one to contain the pigment coated filler spacer screen (base web) that contains.
The present invention also relates to prepare a kind of being used for and be used to prepare a kind of fibroreticulate method at a paper or a kind of fibroreticulate paper pulp of board machine formation from a kind of fibrous material.
The rare paper pulp of papermaking is made of cellulose fibre or lignocellulose fiber, fines and filler.Wherein many compositions, especially filler is that granularity is so little, so that they can mechanically not adhere on the wire and they are had to be attached on the bigger fiber or by flocculation and interosculate.In order to flocculate, use be the reservation chemicals that before this net forms, adds in this rare paper pulp.The reservation chemicals of mentioning comprises polymeric articles, for example polyaziridine, low molar mass polyacrylamide and polyamine, and with cationic starch, guar gum or the polyacrylamide of glue-like silica, alumina or imvite combination.The quantity that keeps chemicals generally is at least 0.5% of this fiber dry, typically about 0.6～1% of this fiber dry.
In papermaking, it is that retention rate (retention) always has to a certain degree compromise usually that fibroreticulate uniformity is promptly constructed (formation) and the surplus ratio of each rare paper pulp composition on metal-silk screen, another kind ofly when one of them improves just worsens.This is logical, needs small particle to flocculate into nanocluster usually because keep, and the uniformity of paper (i.e. structure) will worsen at this moment.Because this reason, be necessary to move retention rate paper less than desired usually in the hope of producing uniform paper, this has increased the quantity of solid in the circulating water body and has produced variety of issue.And then the commercial reservation system that gets is highstrung to the chemical change in the recirculated water at present.
An object of the present invention is to eliminate the shortcoming that interrelates with present situation in the industry, and a kind of a kind of brand-new solution that has both the fibroreticulate production of good retention rate and favourable structure simultaneously is provided.
The present invention is with the following basis that is viewed as: by containing the composite pigment that is deposited on the lip-deep light-scattering material particulate of each fines (fines) to replace usual mineral filler be at least a portion of epipastic mineral pigment with a kind of, can significantly reduce the quantity of usual preservative.Such a kind of filler product is learnt from FI patent gazette 100729.This product comprises by being deposited on the pearl string that calcium carbonate microparticle on each fines and fine fibrils constitute.According to this patent gazette, the feature of this new packing be make tosca with beating method on the fine fibrils of cellulose fibre and/or mechanical pulp fiber production.The size distribution of this fines part is mainly corresponding to woven wire fraction P100.
According to described patent gazette, by means of this filler, can improve the concentration of calcium carbonate in the paper, thereby " other the is important " performance that need not to change this paper just can reduce the grammage of this paper.Filler retention is good.The result of this communique is based on the result who determines from the laboratory data list with standard SCAN-C 26:76 and SCAN-M 5:76 respectively.In this laboratory data list, the use amount of cationic starch is 0.65% of this fiber quality, and the use amount of silica is 0.15% of this fiber quality.
Relate to the present invention, unexpectedly observe, use above-described compounded mix, textural what obtain is like this high rare paper pulp retention rate of fiber in paper and the board machine at high level, so that usual preservative is unwanted at all, or comparing in its quantity and the usual spacer screen is quite low.
According to the present invention, in this spacer screen 10～100% of filler, by there being light-scattering material particle deposition cellulose fibril or lignocellulose fibrils having thereon to constitute, and these cated celluloses or lignocellulose fibrils having account for about 70% of this spacer screen weight at most.
More precisely, according to fibroreticulate being characterised in that of the present invention:
5～100% of filler by there being light-scattering material particle deposition cellulose fibril or lignocellulose fibrils having thereon to constitute in-this spacer screen, and
-this cated cellulose fibril or lignocellulose fibrils having account for 70% of this spacer screen weight at most,
Wherein this spacer screen contains the preservative that be selected from cationic starch and silica of its amount for 0～0.40wt% of this fiber quality on 10 β structure level.
Being used to prepare a kind of fibroreticulate method according to the present invention is to prepare a kind of being used for according to this method from a kind of fibrous material to form a kind of fibroreticulate paper pulp at paper or board machine,
It is characterized in that
-in this fibrous material mud, add a kind of as filler, include the light-scattering material particle deposition cellulose fibril thereon or the product of lignocellulose fibrils having, 5～100% and its quantity that this product accounts for this filler be at most this mass of fibre material 70% and
-the preservative that is selected from cationic starch and silica is added in this mud with the quantity of 0～0.40wt% of this mass of fibre material.
The invention provides a lot of advantage.Therefore, by means of the present invention, can the quality of production evenly and structure level height and the high paper of retention rate; In addition, circulating water body be in fact cleaning and also reduced the preservative requirement.The present invention does not need any flocculation of this filler, and is opposite with the commercial reservation system that gets; This point has produced the essence influence to the optical effect of structure and filler.
Better structure (formation) causes more level and smooth and more vernicose paper.If this paper is coated with, then the covering that this coating provided is just better, and this makes the coating of less amount become possibility.Reduced the problem that the inhomogeneities with gloss and printing quality interrelates.
This spacer screen does not contain any usual preservative, or its quantity compare with fibroreticulate this quantity that has the same configuration level and contain usual granulated filler few more than 20%, better can reach 50% less.Therefore, reduced chemicals cost in the fiber web preparation, the recirculation of water body on also convenient paper or the board machine according to the solution of the present invention.According to the present invention, might reduce the nanoparticle of usual use and polymer (seeing above) both or any one quantity in the middle of them.Therefore, described 20% minimizing can be calculated respectively from one of these compositions or from two kinds of one-tenth subtotalings.In following examples 3, when the quantity of nanoparticle remained unchanged, the quantity of component of polymer had reduced and has been lower than 30wt% slightly.
Below will the present invention be described in more detail by means of describing in detail and a few embodiment example.
Fig. 1 shows the result's of embodiment 2 the functional relation of web constructions and total retention rate, and Fig. 2 shows the functional relation of this structure and woven wire water denseness.
In following examples, employed filler contains a kind of fibriilar fines fraction that obtains from a kind of chemical pulp that comprises.So-called " chemical pulp " means a kind of with the paper pulp of cellulose fibre delignification with the boiling chemical treatments in this article.According to a kind of better embodiment, the fibrillation that uses among the present invention is by from the sulfate process and the fibrillation of pulling an oar and obtaining with the paper pulp of other alkaline process preparation.Except that chemical pulp, the present invention also is applicable to and uses the filler of producing from the fibrillation that chemical-mechanical is starched and mechanical pulp obtains.
Say that typically the average fineness degree of cellulose or lignocellulose fibrils having is less than 1 μ m.This fibrillation is with one or two sign in the following benchmark:
A. they can be by the fraction of 50 eye mesh screens corresponding to one;
B. their average fineness degree is that 0.01～10 μ m (preferably maximum 5 μ m) and their average length are 10～1500 μ m.
Fibrillation promptly comes fibrillation based on the source material of the fines of cellulose fibre or other fiber by making beating in a paper pulp refiner.Desirable fraction can be separated with screen cloth in case of necessity, but this fines not necessarily always sieves.The fibrillation fraction that is suitable for comprises wire screen fraction P50-P400.Better use the paper pulp grinding machine that the slot type edge of a knife is arranged.
Light-scattering material particulate in the filler is the inorganic salts or the organic salt that can generate from its source material by precipitation in a kind of aqueous medium.Such compound comprise calcium carbonate, calcium oxalate, calcium sulfate, barium sulfate, and composition thereof.These particles of material are deposited on the fibrillation, in the hope of producing a kind of agglomerate as the pearl string.The quantity of this inorganic salt compound is about 0.0001～95wt%, better about 0.1～90wt%, best about 60～80wt% when filler quantity is calculated, and is about 0.1～60wt% of paper, better about 0.5～50wt%.
Below use and as an example the present invention is discussed, but be clear that any other kind that can use in the present invention in the above-mentioned product that contains various light scattering pigment according to the product of FI patent gazette 100729.
This filler is to prepare by coloring earth being deposited on from the surface of cellulose fibre and/or mechanical pulp fiber production fine fibrils.For example, the precipitation of calcium carbonate can be undertaken by a kind of water base calcium hydroxide mixture of charging in a kind of water base fibrillation slurry, and this mixture can contain solid hydrogen calcium oxide and a kind of carbanion and water-soluble at least in part compound of containing.Also carbon dioxide can be imported this aqueous phase, this gas produces calcium carbonate in the presence of calcium hydroxide.Formed the same calcium carbonate crystal agglomerate of pearl string at this, these agglomerates are that fine rule is fixed together by fibrillation, and wherein this calcium carbonate microparticle deposits on this thin fibrillation and is attached to above them.Form the same line of pearl string with calcium carbonate thin fibrillation together, these lines become the pearl string of a pile substantially as sign indicating number.In water (rare paper pulp), the ratio of this agglomerate and the effective volume of this pulp is compared with the corresponding ratio of the usual calcium carbonate that uses as filler, is very high.So-called " effective volume " means the needed volume of this pigment.
The diameter of calcium carbonate microparticle is about 0.1～5 μ m in this agglomerate, typically about 0.2～3 μ m.Usually use main (more than at least 55%) fibrillation corresponding to wire screen fraction P50～P400.
With paper pulp with a kind of rare paper pulp of known mode furnishing suitable consistency for (typically solids content is about 0.1～1%) itself and spread on the woven wire.Add above-mentioned filler in the fiber pulp in the high-order stuff box that is preferably in paper or board machine, its quantity is generally about 1～100wt% of fibre weight in this fiber pulp, and in other words, the quantity of filler can be up to the quantity that equals this actual fibers slurry.Usually, disclosed filler accounts for the 5wt% at least of filler in this spacer screen, best 10～100wt% and is respectively 10～50wt% of fibrous material in this spacer screen.Also can prepare a kind of spacer screen in principle, wherein, this fibrous material all is made of the filler fibrillation, and therefore, in general, this filler can account for 1～100wt% of fibrous material in this spacer screen.Better; cated cellulose fibril or lignocellulose fibrils having account for about 70wt% of this spacer screen, about 10～65wt% for example at most; in this case, the remainder of this net comprises usual mechanical pulp and/or chemical pulp and/or conventional fillers and/or other additive that uses in the papermaking.
The part of the filler that uses in this mud (95wt% of this filler total amount, common 90～10wt%) can for example form by conventional fillers at most by calcium carbonate (natural or precipitation), kaolin, talcum, adding aluminum hydroxide (three aluminium hydroxide), calcium sulfate, barium sulfate, calcium oxalate or titanium dioxide.Yet, better at least 80%, especially good at least 90% of the light scattering pigment particle of this precipitation be attached on the fibrillation.
So-called " conventional fillers " means a kind of pulverous, granulated filler of comprising loose particles at this, and employed in the present invention filler mainly be a kind of wherein this particulate is not loose but be attached to product on the fibrillation.According to a kind of viewpoint of the present invention,, improved the structure and the retention rate of paper by using part that is a kind of form that combines with fibrillation in this filler.Therefore, in accordance with this embodiment, employed filler is for example calcium carbonate, calcium oxalate, calcium sulfate or barium sulfate at least in part, and wherein a part is powdery form, a part is the form that is attached on the fibrillation.In this embodiment, in order to improve structure, the part of this pulverulent filler (at least about 5wt%, better 10wt%, best 20wt% at least at least) replaces with a kind of product that is attached on the fibrillation.
On paper or board machine, this fiber pulp is configured as a kind of paper or cardboard web.Make this fiber web drying, preferably be coated with and randomly carry out post processing by for example press polish.
This fiber web can be coated with for example calcium carbonate, gypsum, alumina silicate, kaolin, aluminium hydroxide, magnesium silicate, talcum, titanium dioxide, barium sulfate, zinc oxide, synthetic dyestuff or its mixture.
The light-scattering material particulate of filler is to be present in this fiber web with the form of not flocculating in fact in this fiber web.This means that this fibroreticulate structure is quite good.Therefore, on structure level 10, this fiber web contains usual preservative, and for example cationic starch and/or silica add up to the 0.40wt% that mostly is this fiber quality most.According to a kind of good especially embodiment, this fiber web does not have or does not have fully the ion-type conservative in fact." usual preservative " comprises those that use with conventional fillers particularly.
By means of the present invention, can produce cated and randomly also have press polish, printing performance excellence, smoothness height and opacity and the high cellulose-containing material net of whiteness.So-called " cellulose-containing material " refers generally to from a kind of lignocellulose-containing raw material especially timber or paper, cardboard or a kind of corresponding cellulose-containing material annual or that perennial plant derives at this.Described material can be contain timber or do not have timber, and it can be from mechanical pulp, half machinery (chemical machinery) slurry or chemical pulp preparation.This chemical pulp and this mechanical pulp can be bleaching or unbleached.This material also can contain recycled fibers, especially recyclable papers or recirculation cardboard.The grammage of this web material is typically at 35～500g/m
2Change in the scope, specifically, it is about 50～450g/m
2
In general, the grammage of base stock (base paper) is 20～250g/m
2, better 30～80g/m
2By with 10～20g coating/m
2The coating of/face is such, grammage is about 50～70g/m
2Base stock and with this letterweight light, having obtained a kind of grammage is 70～110g/m
2, whiteness is at least 90%, opacity is at least 90% product.A kind of good especially product is a kind of coating off-set paper that has both high glaze, high opacity and bulk density.The present invention also is suitable for producing the meticulous paper product of the coating that also can contain mechanical pulp and writing paper and printing.
Following indefiniteness embodiment illustrates the present invention.The measurement result of the performance of the paper of pointing out among these embodiment is measured with following standard method:
Surface roughness: SCAN-P76:95
Porosity: SCAN-P60
Air resistance (airtight degree): SCAN-M8, P19
The preparation of embodiment 1 filler
The making beating of chemical pulp
Birch kraft pulp is pulled an oar in the JC-01 of Valmet company refiner, produces a kind of paper pulp that is applicable to the filler preparation.Denseness during this making beating is about 4%, and its total power consumption is 343kWh/t, and it is 0.5J/m than edge of a knife load.
The performance of this product is listed in the table 1.
Fibre property before and after table 1 making beating
| Before the making beating | Behind the machine slurry | |
| Fibre length (length), mm | 0.86 | 0.58 |
| Fibre length (weight), mm | 1.00 | 0.77 |
| SR° | 16 | 86 |
The carbonation of fiber pulp
Carbonation is carried out in running water according to disclosed method in the FI patent gazette 100729.Obtain a kind of dry matter content and be water base rare paper pulp of 2.22%.CaCO in the final products
3Concentration be 69.7%, its specific area is 10.6m
2/ g.The magnitude of PCC granularity is corresponding to this magnitude among the embodiment 1 of FI patent.
Embodiment 2
Use the product described in the embodiment 1 as the filler in the meticulous paper product of coating.Following table has been listed the result of a meticulous paper test of carrying out with test a machine (FEX) of STFI company in Stockholm:
The meticulous paper result of the test of table 2
| Packing density, % | Woven wire water denseness, g/l | Total retention rate, % | Structure, % | |
| PCC | 18.8 | 2.03 | 72.9 | 10.6 |
| PCC | 21.0 | 2.68 | 66.9 | 11.1 |
| SuperFill | 17.8 | 0.48 | 91.1 | 10.4 |
| SuperFill | 22.4 | 0.67 | 88.3 | 9.5 |
The PCC that uses in these tests is the AlbacarLO product of Specialty Minerals company supply.
When investigating each performance in the mode shown in attached Fig. 1 and 2 simultaneously in the same coordinate system, advantage of the present invention is conspicuous.
The special value that this method provided is the following fact: the above performance combination is with optical property and intensity reach simultaneously preferably.
The test of embodiment 3 paper plants
Contain the preparation of filler base stock
For the purpose that is coated with, having prepared grammage under paper plant's condition is 56g/m
2Base stock.This rare paper pulp is made up of the mixture of birch pulp (74%) and pine slurry (24%).After the making beating, the SR value of pine slurry is 32-34 °, and the SR value of birch pulp is 22-25 °.The SR value of paper pulp is 35-40 ° in the high-order stuff box.
The wire network segment of this paper machine is the hybrid metal silk screen (Sym-former) of Valmet company, and the wet pressing end comprises the Sym-Press II that one group of three pressure roller and a usual dryer section are arranged of Valmet company.
In this base stock, use three kinds of different fillers, be the compounded mix described in Finntalc F 15SL (talcum of MondoMinerals company), Albacar HO (PCC of Specialty Minerals company) and the embodiment 1, " SuperFill " this title wherein is also in following use.Talcum is used as filler with 10% and 15% quantity, PCC and SuperFill with 10%, 15% and 20% quantity.
Employed reservation chemicals is nanoparticle and cationic starch (Compozil Plus:EKA NP 780 nanoparticles and EKA PL 1510C-Pam, supplier: EKA Chemicals company).For talcum and PCC, its dosage is as follows: nanoparticle 280g/t, polymer 70g/t; And for SuperFill, its dosage is: nanoparticle 280g/t, polymer 50g/t.The consumption of cationic starch and resin sizing agent is 8kg/t and 5.2kg/t.For talcum, the dosage of aluminum sulfate is 13kg/t; For PCC and SuperFill, the dosage of aluminum sulfate is 19kg/t.
The result
Different fillers demonstrates no significant differences such as recirculated water electrical conductivity, COD, pH, CATION requirement or dissolving calcium concentration.Filler retention is best (40～50%) when using SuperFill, is quite little although keep the dosage of polymer with comparing of other filler.Filler retention only is 30～40% during with talcum and PCC.The good retention rate of SuperFill is compared with other filler, has significantly reduced the denseness and the turbidity of recirculated water.Between different fillers and packing density, do not observe any difference of β-structure aspect.
Claims (22)
1. a fiber web comprises
-a kind of filler spacer screen that contains, this spacer screen optionally be coated with one contain pigment coated,
It is characterized in that
5～100% of filler by there being light-scattering material particle deposition cellulose fibril or lignocellulose fibrils having thereon to constitute in-this spacer screen, and
-this cated cellulose fibril or lignocellulose fibrils having account for 70% of this spacer screen weight at most,
Wherein this spacer screen contains the preservative that be selected from cationic starch and silica of its amount for 0～0.40wt% of this fiber quality on 10 β structure level.
2. according to the fiber web of claim 1, it is characterized in that this filler comprise by making beating and sieve from the string preparation, its average fineness degree is less than cellulose fibril or the lignocellulose fibrils having of 10 μ m.
3. according to the fiber web of claim 1, it is characterized in that this filler comprises by pulling an oar and sieve from cellulose fibril or lignocellulose fibrils having the string preparation, the maximum 5 μ m of its average fineness degree.
4. according to the fiber web of claim 2, it is characterized in that this light-scattering material particle deposition on fibrillation, this fibrillation is corresponding to being that 0.01～5 μ m and average length are 10～1500 μ m by fraction and/or its average fineness degree of 50 eye mesh screens.
5. according to any one fiber web in the claim 1～4, it is characterized in that this light-scattering material particulate is inorganic salts or organic salt, these salt generate from its source material by precipitation in a kind of aqueous medium.
6. according to the fiber web of claim 5, it is characterized in that this light-scattering material particulate is calcium carbonate, calcium oxalate, calcium sulfate, barium sulfate or its mixture.
7. according to any one fiber web in the claim 1～4, it is characterized in that this particles of material is deposited on the fibrillation in the hope of producing the same filler of a kind of pearl string.
8. according to the fiber web of claim 7, it is characterized in that with the quantity with proportional this calcium compound of this fiber number be 0.0001～90wt%.
9. according to any one fiber web in the claim 1～4, it is characterized in that it has been coated with calcium carbonate, gypsum, alumina silicate, kaolin, aluminium hydroxide, magnesium silicate, talcum, titanium dioxide, barium sulfate, zinc oxide, synthetic dyestuff or its mixture.
10. according to any one fiber web in the claim 1～4, it is characterized in that including light-scattering material particle deposition cellulose fibril or the filler of lignocellulose fibrils having 10～100wt% of accounting for filler in this spacer screen thereon.
11., it is characterized in that including light-scattering material particle deposition cellulose fibril or the filler of lignocellulose fibrils having 10～50wt% of accounting for fibrous material in this spacer screen thereon according to any one fiber web in the claim 1～4.
12. according to any one fiber web in the claim 1～4, it is characterized in that light-scattering material particulate in the filler of this net be with a kind of in fact not the form of flocculation be present in this fiber web.
13., it is characterized in that it comprises coating meticulous paper or printing or writes and use paper according to any one fiber web in the claim 1～4.
14. according to any one fiber web in the claim 1～4, it is characterized in that filler in this spacer screen 5～90% by there being light-scattering material particle deposition cellulose fibre or lignocellulose fiber thereon to constitute.
15., it is characterized in that this remaining sum constitutes by being selected from following usual pulverulent filler: calcium carbonate, kaolin, talcum, aluminium hydroxide, calcium sulfate, barium sulfate, calcium oxalate and titanium dioxide natural or precipitation according to the fiber web of claim 14.
16., it is characterized in that it does not have the ion-type preservative in fact according to the fiber web of claim 13.
17. one kind prepares fibroreticulate method, and prepare a kind of being used for according to this method from a kind of fibrous material and form a kind of fibroreticulate paper pulp at paper or board machine,
It is characterized in that
-in this fibrous material mud, add a kind of as filler, include the light-scattering material particle deposition cellulose fibril thereon or the product of lignocellulose fibrils having, 5～100% and its quantity that this product accounts for this filler be at most this mass of fibre material 70% and
-the preservative that is selected from cationic starch and silica is added in this mud with the quantity of 0～0.40wt% of this mass of fibre material.
18. according to the method for claim 17, it is characterized in that using a kind of filler, this filler comprise by making beating and sieve from string preparation, its average fineness degree is less than cellulose fibril or the lignocellulose fibrils having of 10 μ m.
19. according to the method for claim 17, it is characterized in that using a kind of filler, this filler comprises by making beating and sieves from cellulose fibril or lignocellulose fibrils having the string preparation, the maximum 5 μ m of its average fineness degree.
20. method according to claim 18, it is characterized in that using a kind of filler, wherein this light-scattering material particle deposition is on fibrillation, this fibrillation corresponding to a kind of can be that 0.1～5 μ m, average length are 10～1500 μ m by fraction and/or its average fineness degree of 50 mesh sieves.
21. according to any one method in the claim 17～20, it is characterized in that using a kind of filler, wherein at least 90% of the light scattering pigment particle of this precipitation be attached on the fibrillation.
22., it is characterized in that this spacer screen is coated with a kind of coating compound that contains pigment on paper machine according to the method for claim 21.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20010847 | 2001-04-24 | ||
| FI20010847A FI117873B (en) | 2001-04-24 | 2001-04-24 | Fiber web and method of making it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1516768A CN1516768A (en) | 2004-07-28 |
| CN1279243C true CN1279243C (en) | 2006-10-11 |
Family
ID=8561047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02812111.2A Expired - Fee Related CN1279243C (en) | 2001-04-24 | 2002-04-24 | Fibrous web and process for preparation thereof |
Country Status (9)
| Country | Link |
|---|---|
| US (4) | US20040168782A1 (en) |
| EP (1) | EP1392922A1 (en) |
| JP (1) | JP5064644B2 (en) |
| CN (1) | CN1279243C (en) |
| AU (1) | AU2002247795B2 (en) |
| CA (1) | CA2444795C (en) |
| FI (1) | FI117873B (en) |
| NZ (1) | NZ541156A (en) |
| WO (1) | WO2002090652A1 (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI115475B (en) * | 2002-10-24 | 2005-05-13 | M Real Oyj | Process for making paper and cardboard |
| FI20050293A (en) * | 2005-03-18 | 2006-09-19 | Kemira Oyj | New composite materials and their manufacture and use in the manufacture of paper and cardboard |
| PT3617400T (en) | 2009-03-30 | 2022-12-30 | Fiberlean Tech Ltd | Use of nanofibrillar cellulose suspensions |
| EP2805986B1 (en) | 2009-03-30 | 2017-11-08 | FiberLean Technologies Limited | Process for the production of nano-fibrillar cellulose gels |
| GB0908401D0 (en) | 2009-05-15 | 2009-06-24 | Imerys Minerals Ltd | Paper filler composition |
| SI2386682T1 (en) | 2010-04-27 | 2014-07-31 | Omya International Ag | Process for the manufacture of structured materials using nano-fibrillar cellulose gels |
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2001
- 2001-04-24 FI FI20010847A patent/FI117873B/en not_active IP Right Cessation
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2002
- 2002-04-24 AU AU2002247795A patent/AU2002247795B2/en not_active Ceased
- 2002-04-24 US US10/475,771 patent/US20040168782A1/en not_active Abandoned
- 2002-04-24 NZ NZ541156A patent/NZ541156A/en not_active IP Right Cessation
- 2002-04-24 WO PCT/FI2002/000344 patent/WO2002090652A1/en active Application Filing
- 2002-04-24 EP EP02716872A patent/EP1392922A1/en not_active Withdrawn
- 2002-04-24 CA CA2444795A patent/CA2444795C/en not_active Expired - Fee Related
- 2002-04-24 JP JP2002587702A patent/JP5064644B2/en not_active Expired - Fee Related
- 2002-04-24 CN CN02812111.2A patent/CN1279243C/en not_active Expired - Fee Related
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2007
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2009
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| US20100218908A1 (en) | 2010-09-02 |
| JP2004525280A (en) | 2004-08-19 |
| WO2002090652A1 (en) | 2002-11-14 |
| FI20010847A0 (en) | 2001-04-24 |
| CN1516768A (en) | 2004-07-28 |
| US20080073049A1 (en) | 2008-03-27 |
| CA2444795A1 (en) | 2002-11-14 |
| JP5064644B2 (en) | 2012-10-31 |
| FI20010847A (en) | 2002-10-25 |
| NZ541156A (en) | 2007-02-23 |
| EP1392922A1 (en) | 2004-03-03 |
| US20040168782A1 (en) | 2004-09-02 |
| CA2444795C (en) | 2013-07-16 |
| US20130139987A1 (en) | 2013-06-06 |
| FI117873B (en) | 2007-03-30 |
| AU2002247795B2 (en) | 2007-09-06 |
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