EP2227596A2 - Procédé de fabrication de papier, de carton ou de produits analogues ainsi que produits de papier et carton correspondants - Google Patents

Procédé de fabrication de papier, de carton ou de produits analogues ainsi que produits de papier et carton correspondants

Info

Publication number
EP2227596A2
EP2227596A2 EP08864431A EP08864431A EP2227596A2 EP 2227596 A2 EP2227596 A2 EP 2227596A2 EP 08864431 A EP08864431 A EP 08864431A EP 08864431 A EP08864431 A EP 08864431A EP 2227596 A2 EP2227596 A2 EP 2227596A2
Authority
EP
European Patent Office
Prior art keywords
fibers
filler
paper
length
diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08864431A
Other languages
German (de)
English (en)
Other versions
EP2227596B1 (fr
Inventor
Eric Emmert
Sebastian Peters
Nils Rickertsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imerys Metalcasting Germany GmbH
Original Assignee
S & B Ind Minerals GmbH
S & B Industrial Minerals GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by S & B Ind Minerals GmbH, S & B Industrial Minerals GmbH filed Critical S & B Ind Minerals GmbH
Publication of EP2227596A2 publication Critical patent/EP2227596A2/fr
Application granted granted Critical
Publication of EP2227596B1 publication Critical patent/EP2227596B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • 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
    • 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
    • D21H21/10—Retention agents or drainage improvers
    • 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
    • D21H21/50—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 characterised by form
    • D21H21/52—Additives of definite length or shape

Definitions

  • the invention relates to a process for the production of paper, paperboard or similar products, according to which a mixture or pulp of cellulose fibers, at least one retention agent, at least one mineral filler of filler fibers and a solvent, for. Water, is prepared and dried on a wire to produce a product web.
  • the ingredients which later constitute the product or product web in question are added as a dilute slurry to the mentioned sieve and filtered.
  • the slurry is usually the pulp, ie the pulp of paper or pulp dissolved in water.
  • retention aids are usually used.
  • Fillers according to the invention usually refer to those based on mineral, which are composed of filler fibers.
  • mineral fillers of filler fibers it is also possible to add fines such as kaolin, ie powdery or granular additives, to the paper or paperboard product.
  • fines such as kaolin, ie powdery or granular additives, to the paper or paperboard product.
  • filler now includes inventive Measured both the previously mentioned mineral fillers as filler fibers and powdered or granular fines.
  • the fillers usually have only a low affinity for the cellulosic fiber, which explains the described effect. This results in both ecological and economic damage, since the fillers can be mainly minerals for filling but also pigments.
  • retention agents in the neutral PH range favor the glue adhesion and fiber balling of the cellulose fibers. In this way, not only fillers, but also larger amounts of fine or residual fibers of cellulose fibers are retained, which represent a significant load factor for wastewater, especially in waste paper recycling with a high proportion of multi-shortened cellulose fibers.
  • the effectiveness of the retention agent is measured as a relative proportion of retained on the screen fiber, fillers and optionally fines against complete retention of these substances in the wastewater.
  • a high retention corresponds to a high percentage of remaining additives or fillers in the paper. From the above explanations, it is immediately apparent that high retention is generally desired in papermaking or paperboard production.
  • the use of mineral fillers in the manufacture of paper, paperboard or similar products has long been known. An example of this is described in WO 03/093578 A1.
  • the use of such mineral fillers is intended, on the one hand, to replace all or part of the expensive cellulose fibers and, on the other hand, to bring about a positive effect on the whiteness, the opacity, the smoothness or printability of the product web produced.
  • the opacity is a measure of the opacity or turbidity of substances and represents mathematically the reciprocal of the transmittance.
  • Opacity and transmittance describe the same material property. For example, a fully transmissive fabric has an opacity of 1, because the transmittance of a non-light-reinforcing material can be 1 or less.
  • An infinitely opaque, ie impermeable, substance has an opacity of 0.
  • mineral fillers serve, inter alia, to improve the opacity, ie turbidity, mostly in the sense of reducing the opacity and thus increasing the transmittance.
  • a condenser paper according to DE 18 17 334 A finally uses a mixture of cellulose fibers with mineral fibers.
  • the diameter of the mineral fibers corresponds to the diameter of the fibrils, which have arisen due to a grinding process of the cellulose fibers.
  • the invention is based on the technical problem of further developing such a method so that the mineral filler can be added in large quantities and without significant loss of strength, so that overall the production costs are reduced.
  • the filler fibers of the mineral filler and the cellulose fibers of the cellulose or of the cellulose base material are in their length and / or their respective diameter and / or in terms of country gen proceedingss (length / diameter) substantially agree or are adapted to each other.
  • the cellulose fibers and the filler fibers each have a maximum deviation of twenty times, in particular ten times, preferably five times, more preferably three times and expressly preferably two times, with respect to the matching property or several matching properties.
  • scanning tunnel recordings of the filler fibers can be carried out and a corresponding selection made by appropriate screening processes.
  • properties such as length, diameter and length ratio of the filler fibers and in this way the selection can be made.
  • this also applies to the cellulose fibers, although these are usually supplied and processed with specific properties.
  • the cellulose fiber in each case twice as long or three times as long as compared to the filler fibers. be formed or vice versa.
  • the respective fibers may alternatively or additionally have the adjusted aspect ratio within the specified ranges.
  • a silicate is used as the mineral filler and, in particular, an inosilicate is used here.
  • inosilicates each have SiO 2 tetrahedra linked together to form one-dimensional infinite chains.
  • chain-shaped structural features also explain the morphological properties of the inosilicates in question.
  • inosilicates or chain silicates usually show a prismatic stem-like to needle-like habit. In addition, they have good cleavability and can be separated fibrous parallel to the chain axes.
  • Most inosilicates are composed of one-dimensionally infinite chains or bands whose periodicity comprises two tetrahedral lengths.
  • the pseudohexagonal wollastonite has been found, which forms triples.
  • the cellulose fibers and the filler fibers are each formed as short fibers and have a length of less than 2 mm, in particular one which is located below 1 mm. It has proven useful if the filler fibers are equipped with an aspect ratio (length / diameter) of 3 to 50, in particular 3 to 30, preferably 6 to 20 and very particularly preferably 10 to 20. That is, the length of the respective filler fiber is three to fifty times its diameter.
  • the cellulose fibers are equipped with an aspect ratio of up to about 100 or more. In fact, aspect ratios up to 150 are observed. That is, the length of the cellulose fibers may be 150 times as large as their diameter.
  • the aspect ratios are adapted to one another within the scope of the previously described range.
  • the corresponding aspect ratio for the cellulosic fibers is at most three times, hence 150.
  • the reverse can also be used.
  • the invention recommends those made from natural fibers, for example short fibers such as eucalyptus fibers or birch fibers or long fibers such as spruce fibers etc.
  • the cellulose fibers regularly have a length of up to 1 mm and may be equipped with a diameter of up to 100 .mu.m, wherein the diameter of the cellulose fibers is preferably in the range between about 5 microns and 80 microns settled.
  • the filler fibers are usually also equipped with a length of up to 1 mm, preferably up to 0.5 mm. Their diameter is generally at most 100 microns and preferably in the range between 5 microns and 80 microns, in particular between 6 microns and 75 microns.
  • the filler of the filler fibers or inosilicate fibers and in particular wollastonite fibers has an extraordinary degree of whiteness, which can assume values between 70% and 95%. In particular, a whiteness between 75% and 92% is observed. As usual, the whiteness denotes the
  • Reflectivity of the product in question for white light Due to this fact can be completely or partially dispensed with the addition of color pigments such as titanium dioxide and the inventive mineral filler replaces the respective color pigments wholly or partly.
  • SC papers super-calandered
  • These are uncoated, woody papers, which are advantageously used for the production of magazines.
  • the invention also provides a paper or paperboard product as described in claim 9 and subsequently in claim 10.
  • the filler fibers of the mineral filler and the cellulose fibers of the cellulosic base material are adapted to each other.
  • the invention allows with respect to the matching property in each case a deviation of not more than twenty times, in particular ten times and preferably five times or even less.
  • the filler content in the products produced by the process according to the invention can be increased, wherein at the same time the observed in the prior art loss of strength does not occur or not so pronounced.
  • This is ensured by the adaptation of the fibers to one another.
  • the filler fibers easily integrate into the slurry and are able to replace the cellulosic fibers to a large extent. This can be attributed to the fact that the individual cellulose molecules are designed as chain-like macromolecules and have a similar morphology to the filler-added inosilicates.
  • the filler fibers are as it were integrated into the molecular bundles that form during the paper making, from which the fibrils are built up. That is, the filler fibers and the cellulose fibers form a coherent network, so that the strength against paper products with no or reduced proportion of the respective mineral fillers only insignificantly decreases or even remains the same.
  • the use of the filler or of the filler fibers advantageously increases the drying speed in papermaking, because the filler fibers are less hydrophilic than the cellulose fibers and consequently the water absorption is reduced compared to a conventional mixture.
  • the filler fibers increase the porosity of the product web thus produced, so that the application of paint is facilitated and the reprocessing is promoted.
  • the mineral filler used in the filler fibers or the inosilicate fibers generally has a high flash point. This is in the case of wollastonite well above 1000 ° C. This significantly increases the refractoriness of a so-equipped paper or paperboard product.
  • inosilicates in general and wollastonite in particular - as already mentioned - are less hydrophilic than cellulose fibers, so that not only the drying, but also the filtration rate can be increased in the production of the product web. As a result, energy can be saved during the drying process and the production speed can be increased. It has proven to be altogether good if the mineral filler or the filler fibers is added directly to the pulp or be taken into account as starting material in the production of the pulp.
  • the retention compared with previous paper or paperboard products with other mineral fillers is also improved.
  • the proportion of the mineral filler with the specially adapted filler fibers in the range of a few wt .-%, for example, 5 wt .-% to 20 wt .-%, preferably up to 10 wt .-% in the pulp.
  • additional fillers such as kaolin, will be used to fill in interstices between the fibers to soften and soften the product produced and give it a smooth surface.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

L'invention a pour objet un procédé de fabrication de papier, de carton ou de produits analogues, et un produit de papier ou de carton correspondant. Ce procédé consiste à préparer un mélange, ou pâte, à partir de fibres de cellulose, d'au moins un agent de rétention, d'au moins une matière de charge minérale à base de fibres minérales et d'un solvant, par exemple de l'eau, et à faire sécher ce mélange sur une toile. On obtient ainsi une bande continue de produit. Selon l'invention, les fibres de cellulose et les fibres de matière de charge sont assorties mutuellement en fonction d'au moins une des caractéristiques suivantes : a) longueur, b) diamètre et c) facteur de forme (longueur/diamètre).
EP08864431.5A 2007-12-22 2008-12-20 Procédé de fabrication de papier, de carton ou de produits analogues ainsi que produits de papier et carton correspondants Not-in-force EP2227596B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710062370 DE102007062370A1 (de) 2007-12-22 2007-12-22 Verfahren zur Herstellung von Papier, Pappe oder dergleichen Produkten sowie zugehöriges Papier- oder Pappeerzeugnis
PCT/EP2008/010985 WO2009080332A2 (fr) 2007-12-22 2008-12-20 Procédé de fabrication de papier, de carton ou de produits analogues ainsi que produits de papier et carton correspondants

Publications (2)

Publication Number Publication Date
EP2227596A2 true EP2227596A2 (fr) 2010-09-15
EP2227596B1 EP2227596B1 (fr) 2016-05-25

Family

ID=40689841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08864431.5A Not-in-force EP2227596B1 (fr) 2007-12-22 2008-12-20 Procédé de fabrication de papier, de carton ou de produits analogues ainsi que produits de papier et carton correspondants

Country Status (5)

Country Link
EP (1) EP2227596B1 (fr)
DE (1) DE102007062370A1 (fr)
ES (1) ES2588353T3 (fr)
PT (1) PT2227596T (fr)
WO (1) WO2009080332A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102745909A (zh) * 2012-07-13 2012-10-24 山西泰华工贸有限公司 造纸用低磨耗硅灰石矿物纤维
CN111910464B (zh) * 2020-08-07 2022-06-14 江西广源化工有限责任公司 一种复合填料及其制备方法和应用、轻质纸

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1817334B2 (de) * 1968-12-28 1973-03-29 Kondensatorpapier
DE3306528A1 (de) * 1982-12-30 1984-07-05 Lüchtrath, Bern, 8700 Würzburg Papier-, karton- und pappenartiger werkstoff
DE4007060A1 (de) * 1990-03-07 1991-09-12 Bayer Ag Intumeszierende flaechengebilde
CN1268810C (zh) 2002-04-30 2006-08-09 加讯发展有限公司 填料组合物、其制备方法及用途
CN1242116C (zh) 2003-01-08 2006-02-15 云南省非金属矿产应用研究所 造纸用改性硅灰石矿物复合纤维及用其造纸的方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009080332A2 *

Also Published As

Publication number Publication date
DE102007062370A1 (de) 2009-06-25
WO2009080332A3 (fr) 2009-10-15
WO2009080332A2 (fr) 2009-07-02
PT2227596T (pt) 2016-08-30
ES2588353T3 (es) 2016-11-02
EP2227596B1 (fr) 2016-05-25

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