CN1516770A - Multilayered fibrous product and process for production thereof - Google Patents
Multilayered fibrous product and process for production thereof Download PDFInfo
- Publication number
- CN1516770A CN1516770A CNA028121619A CN02812161A CN1516770A CN 1516770 A CN1516770 A CN 1516770A CN A028121619 A CNA028121619 A CN A028121619A CN 02812161 A CN02812161 A CN 02812161A CN 1516770 A CN1516770 A CN 1516770A
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- top layer
- filler
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- fiber product
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000000835 fiber Substances 0.000 claims abstract description 56
- 239000000945 filler Substances 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000000149 argon plasma sintering Methods 0.000 claims abstract description 16
- 239000000049 pigment Substances 0.000 claims abstract description 13
- 229920002678 cellulose Polymers 0.000 claims abstract description 10
- 239000001913 cellulose Substances 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 40
- 206010061592 cardiac fibrillation Diseases 0.000 claims description 22
- 230000002600 fibrillogenic effect Effects 0.000 claims description 22
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 19
- 229920001131 Pulp (paper) Polymers 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 12
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 10
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 claims description 7
- 238000007670 refining Methods 0.000 claims description 7
- 239000002657 fibrous material Substances 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 239000011122 softwood Substances 0.000 claims description 5
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000012736 aqueous medium Substances 0.000 claims description 2
- 239000001023 inorganic pigment Substances 0.000 claims 1
- 238000007873 sieving Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000006735 deficit Effects 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 45
- 239000000123 paper Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 239000005995 Aluminium silicate Substances 0.000 description 6
- 235000012211 aluminium silicate Nutrition 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 6
- 239000003755 preservative agent Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 5
- 230000002335 preservative effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 229920003043 Cellulose fiber Polymers 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- -1 carbonate compound Chemical class 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 235000018185 Betula X alpestris Nutrition 0.000 description 3
- 235000018212 Betula X uliginosa Nutrition 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000004061 bleaching Methods 0.000 description 3
- 238000004040 coloring Methods 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000011859 microparticle Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000007380 fibre production Methods 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 2
- 239000000391 magnesium silicate Substances 0.000 description 2
- 235000019792 magnesium silicate Nutrition 0.000 description 2
- 229910052919 magnesium silicate Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 208000032400 Retinal pigmentation Diseases 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 229920006184 cellulose methylcellulose Polymers 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- JYIMWRSJCRRYNK-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4] JYIMWRSJCRRYNK-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
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
- D21H17/63—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
- 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
-
- 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
-
- 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
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite fibres
- D21H15/12—Composite fibres partly organic, partly inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
The multi-layer fibrous product and a process for producing it. According to the present invention the fibre product comprises at least two overlapping fibre layers, whereby the one that forms the top layer of the product contains filler and is lighter than the layer under it and is at least essentially opaque. According to the present invention the filler of the top layer consists at least partially of cellulose or lignocellulose fibrils, on which light scattering material particles have been precipitated. The present invention can be used, for example, to produce white surface liner with a lighter top layer without impairment of the strength of the surface. Thus, the grammage of the layer can be at least about 5% by weight less than a top layer, which has the corresponding opacity and formation, and which has been produced from the same fibre material and mineral pigments.
Description
The present invention relates to a kind of multilayer fibrous product of the preamble according to claim 1.
Such a kind of product comprises at least two overlapping fibrages, and that one deck that wherein constitutes the working surface of this product at least is light and is (opaque) of shading basically and covers that fibrage below it.This top layer contains filler, can also contain usual paper additive and assistant.
The present invention also relates to a kind of multilayer fibrous product production method according to claim 12.
Usually be called " lining " (liner) by two-layer or three layers of a kind of multilayer fibrous product of forming.Lining can be (lining that white liner is arranged) of full brown (brown paper lining) or part white, and perhaps its top layer can be coated with.This lining can be had both at the same time by new fiber or recycled fibers or both and make.
Lining is used as the surface of background lining in a kind of corrugated board packing.The specific characteristic of brown paper lining is intensity, homogeneous quality and Product Safety.The intensity of brown paper lining when comparing with product Lu of recycled fibers system, is a very important competitive advantage.The advantage that use contains the test lining of recycled fibers is the low price and the ecological value of supporting recirculation.
As the example of commodity coating lining, can mention the product that is called " Kemiart Graph " and " Kemiart Lite " of Oy Mets -Botnia Ab company and uncoated " KemiartBrite ".The lining products of Oy Mets -Botnia Ab company is a kind of two fibrolaminar brown paper linings that have, and its bottom is that high yield softwood sulfate pulp, top layer are bleaching birch and softwood sulfate pulp.Use filler in top layer, so that the surface is bright more and level and smooth, this has improved the impressionability performance.In lining production, also use for example preservative of other chemicals, in the hope of noil material and filler being trapped in circulate in this product rather than in water circulation it and AKD adhesive to improve WATER RESISTANCE.With an online coater unit coating is added in this coated product.This coating is for example a kind of combination of kaolin, carbonate and latex of the significantly impressionability of this product.The final gloss and the flatness of final products obtain with press polish.
The production method of the top layer of the lining board of adularescent lining (finishing coat) is compared with the production method of brown bottom, is rather expensive.By Change Example such as these fibrolaminar intensity, just can optimize this product.In this case, it can be rational producing the light as far as possible lining of its top layer weight.Yet, up to now, reduce that finishing coat weight keeps the abundant brightness of lining simultaneously and the trial that do not make this finishing coat become too weak is unsuccessful always.The quantity of white fiber can not reduce easily and the brown fiber be revealed.
This top layer also needs good structure really, and this directly is shown as good impressionability.Therefore, bad being configured on the progressive series of greys that hectograph prints found out especially easily, and becomes the spot printing quality.
An object of the present invention is to eliminate the related problem of known method, and for example novel solution of lining (liner) production of multilayer fibrous product is provided.
The idea of foundation of the present invention is: use a kind of filler of a kind of compounded mix of being made up of fibrillation and coloring earth as the top layer of the fiber product of mentioning in the foreword.
Finnish patent communique No.100729 discloses a kind of papermaking filler, comprises by making calcium carbonate microparticle be deposited in the porous agglomerate that forms on fiber fines (fines) surface.According to this patent gazette, the feature of this new packing is to make this precipitation of calcium carbonate on the tiny fibrillation that produces by refined fiber cellulose fiber and/or mechanical pulp fiber.The size distribution of this fines fraction is mainly corresponding to wire screen fraction P100.
According to the present invention, it has been found that when a kind of top layer of multilayer fibrous product had been filled the above filler, its surperficial opacity so increased considerably, so that can significantly reduce the grammage of finishing coat.The top layer that contains this new filler covers the brown background very expeditiously, although grammage is lower.
And then, within the scope of the invention, it has been found that, also can use and precipitate other the similar filler light-scattering material particulate, that form by cellulose or lignocellulose fibrils having at least in part thereon as filler.The inorganic salts that these particulates precipitate at aqueous phase typically, for example calcium carbonate, calcium sulfate, barium sulfate and calcium oxalate.
Therefore, according to the present invention,, need not to give the thickness that opacity just can reduce this multi-ply paper by using a kind of fibriilar filler that has precipitated calcium carbonate thereon that comprises.BP No.628603 describes multi-ply paper or the cardboard that a kind of its top layer contains the modified fibre body.This body produces by flood this paper pulp with calcium chloride, and operated body is contacted with carbonate compound, thus make this precipitation of calcium carbonate on this fiber-rather than be deposited on the fibrillation.With the sort of corresponding situation described in this BP under, this body has quite bad strength character.In this communique, can not possible from this manufacture of materials paper.And then this body has very bad retention rate.
More particularly, according to the principal character of fiber product of the present invention be the characteristic of claim 1 said those.
According to method of the present invention, should part, it is characterized in that the characteristic of claim 12 said those.
The invention provides a lot of advantage.Therefore, a kind of lining of white liner can not damage this surperficial intensity with a kind of lighter top layer preparation.By means of a kind of novel composite filler, the ratio of white layer and brown colour layer can the change of much easier ground.Because this filer content can increase and because this filler is extremely white, thereby quantity that should white layer can significantly reduce.By reducing this white fiber layer, the commerciality manufacturing of lining also can reduce total grammage of this lining.For example, should be mentioned that grammage, have corresponding opacity and structure and be to compare with the top layer of coloring earth preparation, can hang down at least about 5wt%, better 10wt% at least from the identical fibre material with a kind of according to top layer of the present invention.
Have been found that this filler can improve the structure and the stiffness of this top layer.Filler described in the FI patent gazette No.100729, its ProductName of following usefulness " SuperFill " appellation can keep well, and this makes and can reduce the dosage of preservative but also can keep a kind of purer method.Retention rate also helps to optimize/reduce the dosage of other additive for paper making preferably.Purity helps the operation of this machine, and in general, because failure-frequency is lower, thereby the operational efficiency of this machine has improved.
Below will investigate the present invention in more detail by means of describing in detail with some embodiment.
Fig. 1 a shows a kind of side view of main structure of two-layer fiber product,
Fig. 1 b shows corresponding four layers of fiber product,
Fig. 2 show a kind of two-layer fiber product of producing according to the present invention with two kinds with reference to the light scattering factor of product and the functional relation of the Maron index that two different fill factor, curve factors are arranged,
Fig. 3 shows the corresponding result as the function of bonding power (skot is bonding),
Fig. 4 show as the corresponding result of the function of tensile figure and
Fig. 5 adopts the brightness of four kinds of two-layer fiber products of histogram graph representation, and wherein, two kinds have the top layer that comprises according to filler of the present invention, and other two kinds contain with reference to filler.
Filler and preparation thereof
As previously discussed, according to the present invention, the compounded mix that comprises existing light scattering pigment precipitation cellulose fibril is thereon added in the top layer of this multilayer fibrous product as filler.Fibrillation can come from chemical pulp or mechanical pulp or its mixture.So-called chemical pulp means in this article and has a kind ofly used the boiling chemical treatments so that the delignified pulp of cellulose fibre.According to a kind of better embodiment, this fibrillation is to obtain by refining pulp with sulfate process or other alkaline boiling method production with some.Except that chemical pulp, fibrillation also can come from chemical-mechanical slurry or mechanical pulp.
Say that typically the average fineness degree of cellulose or lignocellulose fibrils having is less than 5 μ m, usually less than 1 μ m.This fibrillation is with at least a sign in the following benchmark:
A. they are corresponding to the fraction that can pass through 100 mesh sieves; With
B. their average fineness degree is that 0.01～10 μ m (better maximum 5 μ m, especially maximum 1 μ m) and their average length are 10～1500 μ m.
Fibrillation promptly carries out fibrillation based on the source material of the fiber fines (fines) of cellulose fibre or other fiber by it is pulled an oar in a paper pulp refiner.Desirable fraction can use in case of necessity a kind of screening from, but fiber fines not necessarily always will sieve.The fibrillation fraction that is suitable for comprises wire screen fraction P50～P100.Better use the refiner that the slot type edge of a knife is arranged.
Light-scattering material particulate in this 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.With the proportional inorganic salt compound quantity of fibrillation quantity, be about 0.0001～95wt%, better about 0.1～90wt%, best about 60～80wt% when filler quantity is calculated, and be about 0.1～80wt% of paper, better about 0.5～50wt%.
Below, a kind of product according to FI patent gazette No.100729 of concrete reference is investigated the present invention, but is clear that the present invention can be applicable to above-mentioned other products by the source material of this light scattering pigment of appropriate change.
This filler is to prepare by a kind of coloring earth is deposited in from the tiny fibriilar surface of cellulose fibre and/or mechanical pulp fiber production.For example, the precipitation of calcium carbonate can be undertaken by a kind of calcium hydroxide aqueous solution of charging in a kind of water base fibrillation mud, and this aqueous solution can contain a kind of solid hydrogen calcium oxide and a kind of compound that contains carbanion and be dissolved in the water at least in part (for example sodium carbonate or ammonium carbonate).Also can import carbon dioxide to this aqueous phase, the latter produces calcium carbonate in the presence of calcium hydroxide.What form is the same calcium carbonate crystal agglomerate of pearl string, these agglomerates by fibrillation be fine rule be fixed together and wherein this calcium carbonate microparticle deposit on the tiny fibrillation and be attached on them.Form the same line of pearl string with calcium carbonate tiny fibrillation together, and the calcium carbonate agglomerate similarly is the pearl string of sign indicating number one-tenth a pile.In water (rare paper pulp), to compare with the corresponding ratio of the usual calcium carbonate that uses as filler, this agglomerate is very high with the ratio of the effective volume of pulp.So-called " effective volume " in this case, means the needed volume of this pigment.
The diameter of calcium carbonate microparticle is about 0.1～5 μ m in this agglomerate, about typically 0.2～3 μ m.Specifically, this fibrillation (at least 55%) is corresponding to wire screen fraction P50～P400.
With 1～90wt% (dry weight), typically this type filler of about 5～50wt% adds in a kind of top layer of multi-layered product.Usually, described filler constitutes 10～50wt% of the 5wt% at least of this base webs filler, best 10～100wt% and this base webs fibrous material respectively.In principle, it also can produce a kind of its fibrous material all by the fibrillated base webs of this filler, and therefore, in general, filler of the present invention can constitute 1～100wt% of this base webs fibrous material.
Be used for rare paper pulp that this base webs is produced, the part of this filler can by conventional fillers for example calcium carbonate form.Yet better at least 80%, especially good at least 90% of the light scattering pigment particle that is precipitated is attached on this fibrillation.
Sandwich construction
Fig. 1 a and 1b illustrate the structure that contains two-layer and four layers multi-layered product respectively.Fig. 1 a illustrates a kind of lining board of typical white liner, and Fig. 1 b illustrates so-called test lining.
Grammage according to fiber product of the present invention better is about 50～500g/m
2, about 80～350g/m typically
2Usually, its grammage is at 125g/m
2More than, but its grammage is at 100g/m
2Following product is applicable to inner wrapping.
Better, (see Fig. 1 a), it has a kind of surface that a finishing coat 1 and a bottom 2 are arranged to comprise a kind of two-layer product according to lining of the present invention.This top layer covers this bottom, makes that can't see through this top layer sees this bottom.
Also can produce three layers or four layers of product.In principle, the number in a kind of multi-layered product middle level does not have the upper limit, even can reach 5 layers, 6 layers or 7 layers.Essential among the present invention is that this top layer contains the filler of describing more accurately before this, makes this top layer can cover each layer below it, promptly can be from each layer of the raw material production of low cost.
In multi-layered product, should be mentioned that four layers of product of test lining type of Fig. 1 b, this product has a layer 4, intermediate layer 5 and the bottom 6 under a top layer 3, this top layer.
Different raw material can be used for producing a kind of fiber product according to application target.Fresh fiber and recycled fibers can use.Fresh fiber can come from softwood or hard material (wood chip), also can come from tailor's clippings.Good especially is that fresh pulp is used for top layer.(kraft pulp) that this preferably produces by sulphate cook, because as its name suggests, sulphate cook provides the good especially material of strength character.The recycling fiber can come from for example used corrugated board packing (OCC) or blended fiber.Recycled fibers is particularly useful for testing lining production.Superficial layer and bottom both can be from similar raw material productions, also can be from different source fiber productions.If the both uses for example kraft pulp of fresh fiber, then the material of bottom can carry out appropriateness to it and make with extra care then with the high yield boiling.Boiling is used for top layer to low kappa value and the material more refining more than bottom material.Say that typically the kappa value of pulp boiling to 30～70 of bottom, the pulp of top layer be the low kappa value (the not kappa value of bleached pulp) of boiling to 25 then.Bleaching can be carried out in a manner known way, for example ECF or TCF bleaching.
Preservative can be such as adding in this rare paper pulp with about 0.5～3% of fibrous material quantity.Yet, for the present invention, have been found that filler described here provides so good retention rate, so that this layer need not preservative, and can significantly reduce the quantity of this preservative.This lining is that filler or top sizing are to improve moisture resistance properties.If use a kind of low-quality recycled fibers, then better use a kind of top sizing pressure roller to produce a kind of product that sufficient intensity is arranged as raw material.According to this machine, the distribution of base weight is about 20/80......40/60, typically about 30/70 between top layer and bottom.Therefore, the grammage of top layer generally is about 20～125g/m
2(seeing following).When operating according to the present invention, the grammage of top layer can reduce more than 10%, until 20% or more, and can not worsen the optical property or the mechanical performance of this finishing coat.
This layer product produced in a manner known way.According to a kind of better embodiment, two-layer or all layers all be earlier from they separately rare pulp production and spread on the Fourdriner woven wire.After this, each layer abutted against each other.About production method, please refer to the works " Board Grades " of AriKiviranta, see book series Paper Making Science andTechnology, Book 18, Paper and Board Grades, Fapet Oy, 2000, the 68 and 69 pages of Jyv skyl .
Can be used as the top layer of different corrugated board packings according to plane fibers product of the present invention.Be particularly well suited in the roof liner of white liner according to solution of the present invention and the white liner lining of coating, the two all is used for the printing work of demand day by day.On these purposes, can utilize the following fact: the surface according to lining of the present invention is a dead smooth and uniform, and high opacity and brightness are arranged simultaneously.In general, the grammage of this top layer is about 20～125g/m
2, best about 50～80g/m
2, especially good about 55～70g/m
2, and use the bleached chemical cellulose pulp as top layer.In order in better embodiment of the present invention, to obtain extraordinary structure, the hard material of main use in this top layer.Therefore, for example, the 60wt% of pulp fibers material is above, typically be hard material more than the 80wt%, all the other are softwoods.This pulp fibers material can be made up of hard material fully.
Usual coating compound can be used to be coated with the coating of white liner top layer product.The calcium carbonate of calcium carbonate, the pulverizing of precipitation, calcium sulfate, calcium oxalate, calcium silicates, kaolin (aluminium hydrosilicate), aluminium hydroxide, magnesium silicate, talcum (hydrated magnesium silicate), titanium dioxide, barium sulfate, and composition thereof can be used as pigment.Synthetic dyestuff also can use.In above-mentioned pigment, main pigment is the calcium carbonate and the gypsum of kaolin, calcium carbonate, precipitation, and these generally account for more than 50% of the dried solid of coating compound.The kaolin of roasting, titanium dioxide, satin white, aluminium hydroxide, sodium silicoaluminate and plastic pigment are other pigment, and their quantity generally is below 25% of dried solid in this mixture.As an example, should be mentioned that barium sulfate and zinc oxide in very special quality kaolin and calcium carbonate and the special pigment.
The general any known binding agent that uses can be used as the binding agent in the coating composition in the paper production.Except that individual binding agent, also can use binder mixtures.The example of typical case's binding agent comprises by the polymer of ethylene linkage unsaturated compound or copolymer for example butadiene-styrene type copolymer and the synthetic latex that has the polyvinyl acetate that contains the carboxyl comonomer to constitute.With above-mentioned material, for example can also use water-soluble polymer, starch, CMC, hydroxyethylcellulose and polyvinyl alcohol as binding agent.And then, in this coating composition, can also use usual additive and assistant, for example medicament, the lubricant of dispersant, the viscosity that influences this mixture and water retention rate, the curing agent that is used to improve resistance to water, optics assistant, defoamer, pH controlling agent and preservative agent.
This coating compound can be administered on this web material in a manner known way.Coating can be carried out before fitting.Better, it carries out after this sandwich construction forms.Can carry out with usual apparatus for coating according to paper of the present invention and/or cardboard coating process, in other words, can be coated with or JET uses with blade coating or with film.Coating can be online or off-line carry out.
The grammage of this coating is at 5～30g/m
2Between change.
Find quite surprisingly that within the scope of the present invention the above filler not only improves the opacity of top layer, and this packed layer also is to be coated with very easily.Can reduce needed pigment quantities of desired brightness or coating quantity with this filler.
According to the present invention, significantly improved opacity with this filler.
Following non-limiting example has illustrated the present invention.Measure in order to following standard method for the pointed measurement result of paper performance among these embodiment:
Surface roughness: SCAN-P76:95
Porosity: SCAN-P60
Anti-permeability: SCAN-M8, P19
Making with extra care of chemical pulp
Birch kraft pulp is refining with a Valmet JC-01 refiner, is applicable to the pulp that filler is produced with generation.Refining denseness is about 4%, and total energy consumption is 343kWh/t, 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 is refining
After making with extra care before refining
Fibre length (length), mm 0.86 0.58
Fibre length (weight), mm 1.00 0.77
SR° 16 86
The carbonation of pulp
Carbonation is carried out in running water according to FI patent gazette No.100729.Produced dry matter content and be 2.22% water slurry shape.The CaCO of final products
3Content is 69.7%, and specific area is 10.6m
2/ kg.
The fibrage that is applicable to the finishing coat of two-layer white liner lining is to produce from the chemical pulp that contains 70wt% birch pulp and 30wt% pine slurry.Filler adds in rare paper pulp with varying number: be respectively filler (SuperFill) described in the embodiment 1 of 13wt% and 20wt%, be respectively the winnofil (PCC of 14wt% and 16wt%, Albacar LO, with reference to 1) and the chalk of 14wt% and the mixture (with reference to 2) of roasting kaolin.
The functional relation of Fig. 2～4 resultant fibrolaminar light scattering abilities of explanation and mechanical strength properties.These figure show, when with the reference 1 and 2 of constant intensity relatively the time, and the light scattering factor of SuperFill filler greatly at least 25% and about 20%.
The consequence of this point is, it is about 20% that this surperficial grammage can reduce, and this has significantly reduced the production cost of lining.
Fig. 5 has shown the result's who is introduced more than the checking result.The lining experiment that this result is done on the middle try engine (FEX) in Stockholm from STFI, grammage that wherein should the surface is from 75g/m
2Standard level be reduced to 65g/m
2Level.Produced the two-layer fibre structure of a kind of test.Measured the ISO brightness of this product.
Fig. 5 shows, with grammage be 75g/m
2Reference 2 relatively the time, the light 10g/m of SuperFill is arranged
2The top layer brightness that produced big 4 brills.This result is fabulous, and it shows the grammage that this is surperficial even can reduce 10g/m
2Below.
Claims (17)
1. a multilayer fibrous product comprises at least two overlapping fibrages (1,2; 3-6), wherein constitute one deck (1 of top layer; 3) contain filler, than that one deck (2 below it; 4-6) light and also it be opaque at least basically, it is characterized in that
-this top layer (1; 3) filler is made up of cellulose or lignocellulose fibrils having at least in part, has precipitated the light-scattering material particulate on this fibrillation.
2. according to the fiber product of claim 1, it is characterized in that this filler comprises from cellulose or the lignocellulose fibrils having of string by making with extra care and sieving and produce, its average fineness degree is less than 5 μ m.
3. according to the fiber product of claim 2, it is characterized in that it is that 0.01～5 μ m and average length are on the fibrillation of fraction of 1 0～1500 μ m by a kind of 50 order mesh screens and/or its average fineness degree that this light-scattering material particulate has been deposited in corresponding to an energy.
4. according to any one fiber product in the claim 1～3, it is characterized in that this light-scattering material particulate is the inorganic salts that can generate by precipitation a kind of aqueous medium from its source material.
5. according to the fiber product of claim 4, it is characterized in that this light-scattering material particulate is calcium carbonate, calcium oxalate, calcium sulfate, barium sulfate or its mixture.
6. according to any one fiber product in the above claim, it is characterized in that it comprises in the roof liner of white liner or the white liner lining of coating.
7. according to any one fiber product in the above claim, it is characterized in that its grammage better is about 50～500g/m
2, about 80～350g/m typically
2, the grammage of top layer is about 20～125g/m in this case
2, better about 50～70g/m
2
8. according to any one fiber product in the above claim, it is characterized in that being distributed between about 20/80～40/60 in grammage between top layer and the bottom.
9. according to any one fiber product in the above claim, it is characterized in that top layer (1; 3) be to produce from the chemical cellulose pulp that comprises hard material slurry, softwood slurry or its mixture.
10. according to any one fiber product in the above claim, it is characterized in that bottom comprises 1～5 layer (2 that produces from fresh fiber or recycled fibers; 4-6).
11. according to any one fiber product in the above claim, the grammage that it is characterized in that this top layer, with from identical fibre material and inorganic pigment production and have corresponding opacity and the top layer of structure is compared, low at least about 5wt%, better 10wt% at least.
12. the production method of a multi-layered product is according to this method, with a surface (1 that constitutes this fiber product; 3) and the filler fibre layer that contains that covers bottom be configured in a bottom (2 of forming by at least one fibrage; 4-6), it is characterized in that this top layer (1; 3) be that rare paper pulp from fibrous material forms, add in this rare paper pulp a kind of comprise have the light-scattering material particulate deposits thereon cellulose or the product of lignocellulose fibrils having as filler.
13. according to the method for claim 12, it is characterized in that using a kind of comprise from string by refining and sieve produce, average fineness degree is less than the cellulose of 5 μ m or the filler of lignocellulose fibrils having.
14. method according to claim 13, it is characterized in that using a kind of filler, wherein, to be deposited in corresponding to an energy be that 0.1～10 μ m and average length are on the fibrillation of fraction of 10～1500 μ m by 50 order mesh screens and/or its average fineness degree to this light-scattering material particulate.
15. according to any one method in the claim 12～14, it is characterized in that using a kind of filler, wherein, at least 80% of the light scattering pigment particle that is precipitated is attached on this fibrillation.
16., it is characterized in that this top layer is coated with a kind of pigment coating mixture that contains on a paper machine according to any one method in the claim 12～15.
17., it is characterized in that this top layer (1 according to any one method in the claim 12～16; 3) and bottom (2; 4-6) on the Fourdriner woven wire, form respectively and take advantage of wet combining and close.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20010848A FI117871B (en) | 2001-04-24 | 2001-04-24 | Multilayer fiber product and process for its preparation |
| FI20010848 | 2001-04-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1516770A true CN1516770A (en) | 2004-07-28 |
| CN100396848C CN100396848C (en) | 2008-06-25 |
Family
ID=8561048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028121619A Expired - Fee Related CN100396848C (en) | 2001-04-24 | 2002-04-24 | Multilayered fibrous product and process for production thereof |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20040168779A1 (en) |
| EP (1) | EP1392923B1 (en) |
| JP (1) | JP4582998B2 (en) |
| CN (1) | CN100396848C (en) |
| AU (1) | AU2002249300B2 (en) |
| CA (1) | CA2445100C (en) |
| FI (1) | FI117871B (en) |
| NZ (1) | NZ529159A (en) |
| WO (1) | WO2002092910A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102119126A (en) * | 2008-08-11 | 2011-07-06 | 凯米罗总公司 | Gypsum-fibre composite product and paper comprising such |
| CN101553622B (en) * | 2006-09-11 | 2011-12-14 | M-真实公司 | Method of manufacturing a multilayer fibrous product |
| CN110214209A (en) * | 2016-11-28 | 2019-09-06 | 日本制纸株式会社 | The manufacturing method of the compound of fiber and inorganic particulate and the laminated body of the compound containing fiber and inorganic particulate |
| CN110678605A (en) * | 2017-03-31 | 2020-01-10 | 日本制纸株式会社 | Method for producing inorganic particle composite fiber sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0030132D0 (en) * | 2000-12-09 | 2001-01-24 | Arjo Wiggins Fine Papers Ltd | Security paper |
| BR0117070A (en) * | 2001-06-06 | 2004-07-27 | Kemira Chemicals Oy | A method of making a multilayer pulp product comprising a interlayer loading and said product |
| US7211171B2 (en) * | 2002-01-05 | 2007-05-01 | The Procter & Gamble Company | Multiply tissue product |
| US20040168781A1 (en) * | 2002-08-05 | 2004-09-02 | Petri Silenius | Noil for use in paper manufacture, method for its production, and paper pulp and paper containing such noil |
| FI122074B (en) * | 2002-10-24 | 2011-08-15 | M Real Oyj | Process for making a fiber product |
| FI115475B (en) * | 2002-10-24 | 2005-05-13 | M Real Oyj | Process for making paper and cardboard |
| RU2360059C2 (en) * | 2004-07-14 | 2009-06-27 | Интернэшнл Пэйпа Кампани | Method for paper production |
| WO2006039118A1 (en) * | 2004-09-29 | 2006-04-13 | Meadwestvaco Corporation | White top paperboard |
| FI20055380L (en) * | 2005-07-01 | 2007-01-02 | M Real Oyj | Method for coating cellulose particles, coated cellulose particles and their use in paper and cardboard manufacturing |
| US20070202283A1 (en) * | 2006-02-27 | 2007-08-30 | John Meazle | Reducing top ply basis weight of white top linerboard in paper or paperboard |
| CN101529020A (en) * | 2006-10-31 | 2009-09-09 | 巴斯夫欧洲公司 | Method for producing a multi layer fiber web from cellulose fibers |
| JP5528760B2 (en) * | 2009-09-30 | 2014-06-25 | 日本製紙株式会社 | Paper made by adding cellulose nanofibers and method for producing the same |
| CN102535251B (en) * | 2011-12-30 | 2013-11-06 | 淄博欧木特种纸业有限公司 | Dustless abrasion-proof paper and making method thereof |
| CA2962292C (en) | 2014-10-10 | 2019-02-05 | Fpinnovations | Compositions, panels and sheets comprising cellulose filaments and gypsum and methods for producing the same |
| JP6729205B2 (en) * | 2016-09-05 | 2020-07-22 | 王子ホールディングス株式会社 | White liner for corrugated board, manufacturing method thereof, and white corrugated board |
| BR102017028522A2 (en) * | 2017-12-28 | 2019-07-16 | Klabin S/A | SHORT CHEMICAL FIBER KRAFTLINER PAPER |
| WO2019136254A1 (en) * | 2018-01-05 | 2019-07-11 | International Paper Company | Paper products having increased bending stiffness and cross-direction strength and methods for making the same |
| CN111335067B (en) * | 2020-04-14 | 2022-05-13 | 联盛纸业（龙海）有限公司 | Craft paper capable of improving L-value brightness of paper surface, surface layer and production method thereof |
| AT524998B1 (en) | 2021-04-21 | 2023-02-15 | Mondi Ag | Printable multi-ply paper for packaging and method of making same |
| AT526619A1 (en) | 2022-11-08 | 2024-05-15 | Mondi Ag | Process for producing a printable liner web for packaging and printable liner for packaging |
| AT526620A1 (en) | 2022-11-08 | 2024-05-15 | Mondi Ag | Process for producing a printable liner web for packaging and printable liner for packaging |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR935128A (en) * | 1946-01-28 | 1948-06-10 | Vanderbilt Co R T | Improvements in papermaking |
| SE7708115L (en) * | 1976-07-14 | 1978-01-15 | English Clays Lovering Pochin | PROCEDURE FOR PREPARING PAPER OR CARDBOARD |
| 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 (en) * | 1992-04-07 | 1996-12-13 | Aussedat Rey | NEW COMPLEX PRODUCT BASED ON FIBERS AND FILLERS, AND METHOD FOR MANUFACTURING SUCH A NEW PRODUCT. |
| CA2195300C (en) * | 1995-05-18 | 2001-06-12 | Michael C. Withiam | Method for preparation of pigmented paper fibers and fiber products |
| FI100729B (en) * | 1995-06-29 | 1998-02-13 | Metsae Serla Oy | Filler used in papermaking and method of making the filler |
| FI100670B (en) * | 1996-02-20 | 1998-01-30 | Metsae Serla Oy | Process for adding filler to cellulose fiber based m assa |
| FI106140B (en) * | 1997-11-21 | 2000-11-30 | Metsae Serla Oyj | Filler used in papermaking and process for its manufacture |
-
2001
- 2001-04-24 FI FI20010848A patent/FI117871B/en not_active IP Right Cessation
-
2002
- 2002-04-24 US US10/475,773 patent/US20040168779A1/en not_active Abandoned
- 2002-04-24 CN CNB028121619A patent/CN100396848C/en not_active Expired - Fee Related
- 2002-04-24 JP JP2002590164A patent/JP4582998B2/en not_active Expired - Lifetime
- 2002-04-24 AU AU2002249300A patent/AU2002249300B2/en not_active Ceased
- 2002-04-24 NZ NZ529159A patent/NZ529159A/en not_active IP Right Cessation
- 2002-04-24 EP EP02718226.0A patent/EP1392923B1/en not_active Expired - Lifetime
- 2002-04-24 WO PCT/FI2002/000342 patent/WO2002092910A1/en active IP Right Grant
- 2002-04-24 CA CA2445100A patent/CA2445100C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101553622B (en) * | 2006-09-11 | 2011-12-14 | M-真实公司 | Method of manufacturing a multilayer fibrous product |
| CN102119126A (en) * | 2008-08-11 | 2011-07-06 | 凯米罗总公司 | Gypsum-fibre composite product and paper comprising such |
| CN110214209A (en) * | 2016-11-28 | 2019-09-06 | 日本制纸株式会社 | The manufacturing method of the compound of fiber and inorganic particulate and the laminated body of the compound containing fiber and inorganic particulate |
| CN110678605A (en) * | 2017-03-31 | 2020-01-10 | 日本制纸株式会社 | Method for producing inorganic particle composite fiber sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4582998B2 (en) | 2010-11-17 |
| EP1392923A1 (en) | 2004-03-03 |
| AU2002249300B2 (en) | 2008-04-24 |
| JP2004525282A (en) | 2004-08-19 |
| US20040168779A1 (en) | 2004-09-02 |
| WO2002092910A1 (en) | 2002-11-21 |
| EP1392923B1 (en) | 2018-07-25 |
| CA2445100C (en) | 2012-12-18 |
| FI20010848A (en) | 2002-10-25 |
| CA2445100A1 (en) | 2002-11-21 |
| NZ529159A (en) | 2005-07-29 |
| FI117871B (en) | 2007-03-30 |
| FI20010848A0 (en) | 2001-04-24 |
| CN100396848C (en) | 2008-06-25 |
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