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EP1794366B1 - Method for producing a cellulose-based material and material produced therewith - Google Patents

Method for producing a cellulose-based material and material produced therewith Download PDF

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Publication number
EP1794366B1
EP1794366B1 EP05790018.5A EP05790018A EP1794366B1 EP 1794366 B1 EP1794366 B1 EP 1794366B1 EP 05790018 A EP05790018 A EP 05790018A EP 1794366 B1 EP1794366 B1 EP 1794366B1
Authority
EP
European Patent Office
Prior art keywords
paper
cellulose
base material
cardboard
papier
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.)
Revoked
Application number
EP05790018.5A
Other languages
German (de)
French (fr)
Other versions
EP1794366A2 (en
Inventor
Harald Schlosser
Armin Ungerer
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.)
J Rettenmaier and Soehne GmbH and Co KG
Original Assignee
J Rettenmaier and Soehne GmbH and Co KG
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
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Application filed by J Rettenmaier and Soehne GmbH and Co KG filed Critical J Rettenmaier and Soehne GmbH and Co KG
Publication of EP1794366A2 publication Critical patent/EP1794366A2/en
Application granted granted Critical
Publication of EP1794366B1 publication Critical patent/EP1794366B1/en
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • D21H17/01—Waste products, e.g. sludge
    • 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
    • D21H17/02—Material of vegetable origin

Definitions

  • the invention relates to the field of materials containing cellulose or converted cellulose. It also relates to the field of natural and artificial fibers and the sheet-like products produced therefrom. These include primarily paper and cardboard. These are known to be made mainly from natural fibers, but also from artificial fibers.
  • High quality papers are marked with a line.
  • so-called coating color is applied to the finished paper web.
  • the coating color generally consists of a dispersion, for example based on kaolin.
  • the painting should meet different, different requirements for the finished paper. These include the improvement of printability, transparency, surface, flatness and more.
  • the invention has for its object to provide a method by which can produce a substance that is suitable as an aggregate for the products mentioned, thus for paper, cardboard and coating colors.
  • the process according to the invention uses cellulose as starting material.
  • Suitable cellulosic suppliers are plants of all kinds, above all wood, but also cereal straw, bamboo, grass, flax or hemp, any kind of native cellulose.
  • the techniques of cellulose recovery are known.
  • Wood chips for example, are produced from wood, and the wood chips are subjected to a boiling process (by the sulphite or sulphate process), whereby lignins and hemicelluloses are dissolved and the cellulose fibers remain.
  • lignins and hemicelluloses are dissolved and the cellulose fibers remain.
  • fibrous materials as starting material for paper and board production by grinding wood with the addition of water. In this case, no leaching of the lignin takes place.
  • the treatment of the starting material may involve its cooking with the addition of acid. But it can also be worked acid free. If you work acid-free, the cellulose-containing starting material is mixed with water and subjected to a shearing process.
  • the crushing is carried out until reaching the nano-area.
  • the resulting product thus the mentioned base material, is present in particles with a mean particle size of 0.1 to 100 my, for example, a particle size of 1 to 20 my.
  • the base material is referred to below as "Nano Disperse Cellulose” (NDC).
  • the base material obtained in this way is now added to the fiber-containing material mentioned at the outset. This can be in solid or liquid form happen. Thus, the base material of the pulp suspension can be added even before it reaches the paper machine. The base material can also be added to the coating color before it is applied as a line on the fibrous web of paper or cardboard.
  • the mentioned shearing process can be treated in a variety of paper making facilities, for example in grinding units such as refiners.
  • the base material may be partially collodially or partially dispersed.
  • the base fabric can be added to the pulp which forms the paper or board web, or the coating color, in varying amounts. So it is conceivable that the finished paper contains between 0.1 and 50% NDC. In general, the proportion of NDC in the finished paper will be 0.1 to 5% by weight.
  • the NDC according to the invention can also be used in combination with other materials to the pulp, which forms the sheet product such as paper or cardboard, or the coating color.
  • materials to the pulp such as paper or cardboard, or the coating color.
  • CMC carboxymethylcellulose
  • kaolin binders, cobinders, thickeners, thixotropic agents, carriers and others are contemplated.
  • An essential idea of the invention is the use of the base material produced as an additive for paper or cardboard. It is essential that the base material has an average particle size below 25 my, preferably between 10 and 20 my or between 0.5 and 20 my.
  • the papers may be so-called base papers, d. H. free from any strokes. You can also include a dash in each case.
  • the base material according to the invention may be added to the base paper or the coated paper. In the latter case, the base stock may be added either to the paper itself, or to the line, or both.
  • the paper may contain inorganic fillers in a known manner, and also inorganic pigments such as calcium carbonate, kaolin, titanium dioxide, talcum.
  • the paper may also contain the usual chemical additives such as binders, co-binders, paint additives, sizing agents, wet strength agents, dry strength agents, chelants, colorants, optical brighteners, biocides, dispersants, defoamers, deaerators, detergents, retention aids, dehydrating agents, fixatives, flocculants.
  • a hygiene paper the base material of the invention may be added, in small quantities of a few weight percent, based on the weight of the total product, as well as in a high percentage. It is conceivable that such a tissue paper contains only 1, 2, ... 5 wt .-% of base material, but also about 20%, for example, 20, 30, 40, 50 and more%.
  • the hygiene paper may also contain substances for cosmetic and beauty care. Such substances could also be added, for example, to the base material according to the invention.

Landscapes

  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

Die Erfindung betrifft das Gebiet von Stoffen, welche Cellulose oder umgewandelte Cellulose enthalten. Es betrifft ferner das Gebiet der natürlichen und künstlichen Faserstoffe sowie der hieraus gefertigten flächigen Produkte. Hierzu gehören in erster Linie Papier und Karton. Diese werden bekanntlich vorwiegend aus natürlichen Faserstoffen hergestellt, aber auch aus künstlichen Faserstoffen.The invention relates to the field of materials containing cellulose or converted cellulose. It also relates to the field of natural and artificial fibers and the sheet-like products produced therefrom. These include primarily paper and cardboard. These are known to be made mainly from natural fibers, but also from artificial fibers.

Qualitativ hochwertige Papiere werden mit einem Strich versehen. Zu diesem Zwecke wird auf die fertige Papierbahn sogenannte Streichfarbe aufgetragen. Die Streichfarbe besteht im allgemeinen aus einer Dispersion, beispielsweise auf Kaolin-Basis. Das Streichen soll verschiedene, unterschiedliche Anforderungen an das fertige Papier erfüllen. Hierzu gehören die Verbesserung der Bedruckbarkeit, der Durchsicht, der Oberfläche, des Flachliegens und anderes mehr.High quality papers are marked with a line. For this purpose, so-called coating color is applied to the finished paper web. The coating color generally consists of a dispersion, for example based on kaolin. The painting should meet different, different requirements for the finished paper. These include the improvement of printability, transparency, surface, flatness and more.

Diese Anforderungen werden bisher nicht oder nur in ungenügendem Maße erfüllt.These requirements are not fulfilled or only insufficiently.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren anzugeben, mit welchem sich ein Stoff erzeugen lässt, der geeignet ist als Zuschlagstoff für die genannten Produkte, somit für Papier, Karton und Streichfarben.The invention has for its object to provide a method by which can produce a substance that is suitable as an aggregate for the products mentioned, thus for paper, cardboard and coating colors.

Diese Aufgabe wird durch die Merkmale der unabhängigen Ansprüche gelöst.This object is solved by the features of the independent claims.

Das erfindungsgemäße Verfahren verwendet Cellulose als Ausgangsmaterial. Als Celluloselieferanten kommen Pflanzen aller Art in Betracht, vor allem Holz, aber auch Getreidestroh, Bambus, Gräser, Flachs oder Hanf, jegliche Art von nativer Cellulose. Die Techniken der Cellulosegewinnung sind bekannt. So werden zum Beispiel aus Holz Hackschnitzel erzeugt, die Hackschnitzel einem Kochprozess unterworfen (nach dem Sulfit- oder Sulfat-Verfahren), wobei Lignine und Hemicellulosen gelöst werden und die Cellulosefasern übrigbleiben. Grundsätzlich ist auch das Herstellen von Faserstoffen als Ausgangsmaterial für die Papier- und Kartonfabrikation durch Schleifen von Holz unter Zugabe von Wasser möglich. Hierbei findet kein Herauslösen des Lignins statt.The process according to the invention uses cellulose as starting material. Suitable cellulosic suppliers are plants of all kinds, above all wood, but also cereal straw, bamboo, grass, flax or hemp, any kind of native cellulose. The techniques of cellulose recovery are known. Wood chips, for example, are produced from wood, and the wood chips are subjected to a boiling process (by the sulphite or sulphate process), whereby lignins and hemicelluloses are dissolved and the cellulose fibers remain. in principle It is also possible to produce fibrous materials as starting material for paper and board production by grinding wood with the addition of water. In this case, no leaching of the lignin takes place.

Gemäß der Erfindung kann die Behandlung des Ausgangsmateriales dessen Kochen unter Zugabe von Säure beinhalten. Es kann aber auch säurefrei gearbeitet werden. Arbeitet man säurefrei, so wird das cellulosehaltige Ausgangsprodukt mit Wasser vermischt und einem Scherprozess unterworfen.According to the invention, the treatment of the starting material may involve its cooking with the addition of acid. But it can also be worked acid free. If you work acid-free, the cellulose-containing starting material is mixed with water and subjected to a shearing process.

Wird mit Säure gearbeitet, so werden die folgenden Verfahrensschritte angewandt:

  • die Cellulosefasern werden mit einer Säure gemischt
  • das Gemisch wird erhitzt, so dass die Cellulose hydrolisiert wird
  • die derart entstandene hydrolisierte Cellulose wird durch Zugabe von Wasser bzw. mit/ohne Zerkleinerungshilfsmitteln in eine Dispersion überführt
  • die Dispersion wird einem Scherprozess unterworfen, um die Cellulosepartikel zu zerkleinern.
If acid is used, the following process steps are used:
  • the cellulose fibers are mixed with an acid
  • the mixture is heated so that the cellulose is hydrolyzed
  • The resulting hydrolyzed cellulose is converted by the addition of water or with / without comminution aids in a dispersion
  • the dispersion is subjected to a shearing process to comminute the cellulose particles.

Die Zerkleinerung wird bis zum Erreichen des Nano-Bereiches durchgeführt. Das hierbei entstandene Produkt, somit der genannte Basisstoff, liegt in Partikeln mit einer mittleren Partikelgröße von 0,1 bis 100 my vor, beispielsweise einer Partikelgröße von 1 bis 20 my. Der Basisstoff wird im Folgenden "Nano Disperse Cellulose" (NDC) genannt.The crushing is carried out until reaching the nano-area. The resulting product, thus the mentioned base material, is present in particles with a mean particle size of 0.1 to 100 my, for example, a particle size of 1 to 20 my. The base material is referred to below as "Nano Disperse Cellulose" (NDC).

Arbeitet man ohne Säure, so entsteht ein Basisstoff mit Partikeln, die länglich sind. Sie können eine Länge von zwischen 10 und 200 my und ein Dicke von 0,5 bis 15 my haben. Vorzugsweise sind sie ca. 50 my lang und ca. 1 my dick.If you work without acid, you create a base material with particles that are elongated. They can have a length of between 10 and 200 my and a thickness of 0.5 to 15 my. Preferably, they are about 50 my long and about 1 my thick.

Der derart gewonnene Basisstoff wird nunmehr dem eingangs genannten faserstoffhaltigen Material zugegeben. Dies kann in fester oder flüssiger Form geschehen. So kann der Basisstoff der Papierstoffsuspension zugesetzt werden, noch bevor diese zur Papiermaschine gelangt. Der Basisstoff kann aber auch der Streichfarbe zugesetzt werden, bevor diese als Strich auf die Faserstoffbahn aus Papier oder Karton aufgetragen wird.The base material obtained in this way is now added to the fiber-containing material mentioned at the outset. This can be in solid or liquid form happen. Thus, the base material of the pulp suspension can be added even before it reaches the paper machine. The base material can also be added to the coating color before it is applied as a line on the fibrous web of paper or cardboard.

Der genannte Scherprozess lässt sich in einer Vielzahl von Einrichtungen der Papierfabrikation behandeln, beispielsweise in Mahlaggregaten wie Refinern. Der Basisstoff kann teilweise kollodial beziehungsweise teilweise dispergiert vorliegen.The mentioned shearing process can be treated in a variety of paper making facilities, for example in grinding units such as refiners. The base material may be partially collodially or partially dispersed.

Der Basisstoff kann dem Faserstoff, welcher die Papier- oder Kartonbahn bildet, oder der Streichfarbe, in unterschiedlichen Mengen zugesetzt werden. So ist es denkbar, dass das fertige Papier zwischen 0,1 und 50 % NDC enthält. Im allgemeinen wird der Anteil von NDC am fertigen Papier 0,1 bis 5 Gew.-% betragen.The base fabric can be added to the pulp which forms the paper or board web, or the coating color, in varying amounts. So it is conceivable that the finished paper contains between 0.1 and 50% NDC. In general, the proportion of NDC in the finished paper will be 0.1 to 5% by weight.

Das erfindungsgemäße NDC lässt sich auch in Kombination mit anderen Stoffen dem Faserstoff zuführen, welcher das flächige Produkt wie Papier oder Karton bildet, oder der Streichfarbe. So kommen Carboxymethylcellulose (CMC) in Betracht, ferner Kaolin, Bindemittel, Cobinder, Verdickungsmittel, Thixotropiermittel, Trägerstoffe und anderes in Betracht.The NDC according to the invention can also be used in combination with other materials to the pulp, which forms the sheet product such as paper or cardboard, or the coating color. For example, carboxymethylcellulose (CMC), kaolin, binders, cobinders, thickeners, thixotropic agents, carriers and others are contemplated.

Versuche mit NDC haben gezeigt, dass sich die folgenden Eigenschaften von flächigen Produkten der genannten Art erzielen lassen:

  • Erhöhung der Festigkeit
  • Wirkt als organisches wasserunlösliches Pigment
  • Bei Druckpapieren ist die Farbintensität sowie das Druckbild deutlich besser als mit anorganischen Pigmenten
  • Hohe Farbabsorption
  • Thixotrope Eigenschaften, gutes Fließverhalten
  • Gute Verträglichkeit mit anderen Streichfarbpigmenten (nahezu inert)
  • Trägerstoff für andere Feststoffe und/oder Flüssigkeiten (anorganische Pigmente, Kationisierungsmittel, Nassfestmittel etc.)
  • Keine Migration während der Trocknung (wie bei Hydrokolloiden wie CMC)
  • Oberfläche bleibt porös und glatt
  • Schnelle Druckfarben Absorption beim Druck
  • Sehr gutes Druckbild, scharf und klar, Offset und Tiefdruck
  • Hat innere Oberfläche (Kapillaren)
  • Gute Entwässerung und Trocknung möglich
  • Teilersatz von Stärke und anorganischen Pigmenten
  • Teilersatz von Bindern und Cobindern
  • Glanzsteigernd
  • Vermeidung von Blasenbildung (Blistern, Falzbrechen etc.)
Experiments with NDC have shown that the following properties of flat products of the type mentioned can be achieved:
  • Increase in strength
  • Acts as an organic water-insoluble pigment
  • For printing papers, the color intensity as well as the printed image is significantly better than with inorganic pigments
  • High color absorption
  • Thixotropic properties, good flow behavior
  • Good compatibility with other coating color pigments (almost inert)
  • Carrier for other solids and / or liquids (inorganic pigments, cationizing agents, wet strength agents, etc.)
  • No migration during drying (as with hydrocolloids such as CMC)
  • Surface remains porous and smooth
  • Fast printing inks absorption during printing
  • Very good print, sharp and clear, offset and gravure
  • Has inner surface (capillaries)
  • Good drainage and drying possible
  • Partial replacement of starch and inorganic pigments
  • Partial replacement of binders and cobinders
  • Stepping up gloss
  • Avoiding blistering (blisters, breakage, etc.)

Ein wesentlicher Gedanke der Erfindung besteht in der Anwendung des erzeugten Basisstoffes als Zuschlagstoff für Papier oder Karton. Wesentlich ist, dass der Basisstoff eine durchschnittliche Partikelgröße aufweist, die unter 25 my liegt, vorzugsweise zwischen 10 und 20 my oder zwischen 0,5 und 20 my.An essential idea of the invention is the use of the base material produced as an additive for paper or cardboard. It is essential that the base material has an average particle size below 25 my, preferably between 10 and 20 my or between 0.5 and 20 my.

Als Papier kommen in Betracht:

  • DRUCK- UND PRESSEPAPIERE
    • AP-Papiere
    • Bibeldruckpapier
    • Bilderdruckpapier
    • Buchdruckpapiere
    • Chlorfreies Papier
    • Druckpapier
    • Dünndruckpapier
    • Feinpapier
    • Gestrichenes Papier
    • Graphisches Recyclingpapier
    • Gussgestrichenes Papier
    • Holzfreies Papier
    • Holzhaltiges Papier
    • Illustrationsdruckpapier
    • Kunstdruckpapier
    • Kupferdruckpapier
    • LWC-Papier
    • Maschinengestrichenes Papier
    • Magazinpapier
    • Naturpapier
    • Oberflächengeleimtes Papier
    • Offsetpapier
    • Recyclingpapier
    • Satiniertes Papier
    • SC-Papier
    • Tiefdruckpapier
    • Werkdruckpapier
    • Zeitschriftenpapier
    • Zeitungsdruckpapier
  • BÜRO- UND ADMINISTRATIONSPAPIERE
    • AP-Papiere
    • Banknotenpapier
    • Bankpostpapier
    • Briefumschlagpapier
    • Büttenpapier
    • Chlorfreies Papier
    • Dokumentenpapier
    • Durchschlagpapier
    • Endlosdruckpapier
    • Feinpapier
    • Geleimtes Papier
    • Graphisches Recyclingpapier
    • Hadernpapier
    • Handgeschöpftes Papier
    • Hartpostpapier
    • Holzfreies Papier
    • Holzhaltiges Papier
    • Karton
    • Karteikarton
    • Kohlepapier
    • Kopierpapier
    • Löschpapier
    • Luftpostpapier
    • Naturpapier
    • NCR-Papier
    • Offsetpapier
    • Plakatpapier
    • Postkartenkarton
    • Recyclingpapier
    • Satiniertes Papier
    • Schreibpapier
    • Schreibmaschinenpapier
    • Selbstdurchschreibepapier
    • Synthesefaserpapiere
    • Telefaxpapier
    • Thermopapier
    • Velinpapier
    • Vergépapier
    • Wasserzeichenpapier
    • Wertzeichenpapier
  • PAPIER, KARTON UND PAPPE FÜR VERPACKUNGSZWECKE
    • AP-Papiere
    • Chromoersatzkarton
    • Chromopapier
    • Chromokarton
    • Duplexkarton
    • Echt Pergament
    • Etikettenpapier
    • Faltschachtelkarton
    • Feinpappe
    • Fettdichtes Papier
    • Gestrichenes Papier
    • Graukarton
    • Graupappe
    • Gussgestrichenes Papier
    • Holzkarton
    • Imprägniertes Papier
    • Karton
    • Kraftliner
    • Kraftpapier
    • Krepppapier
    • Maschinengestrichenes Papier
    • Maschinenkarton
    • Maschinenpappe
    • Nassfestes und laugenfestes Papier
    • Ölpapier
    • Packpapier
    • Pappe
    • Pergamentpapier
    • Pergamin
    • Sackpapier
    • Schrenzpapier
    • Seidenpapier
    • Silikonpapier
    • Testliner
    • Triplexkarton
    • Vollpappe
    • Wachspapier
    • Wellpappe
    • Wellenpapier
    • Wickelpappe
  • HYGIENEPAPIERE
    • AP-Papiere
    • Chlorfreies Papier
    • Hygienepapier
    • Krepppapier
    • Krepp-Hygienepapier
    • Küchentücher
    • Tissue-Hygienepapier
    • Toilettenpapier
  • PAPIER UND PAPPE FÜR TECHNISCHE UND SPEZIELLE VERWENDUNGSZWECKE
    • Aquarellpapier
    • Buntpapier
    • Dachpappe
    • Dekorpapier
    • Elektroisolierpapier
    • Filtrierpapier
    • Flammfestes Papier
    • Fotopapier
    • Glanzpapier
    • Imprägniertes Papier
    • Ingrespapier
    • Kabelpapier
    • Karosseriepapier
    • Kofferpappe
    • Kondensatorpapier
    • Korrosionsschutzpapier
    • Marmorpapier
    • Metallpapier
    • Papiermaché
    • Pappe
    • Sicherheitspapier
    • Schuhpappe
    • Spezialpapiere
    • Tapetenrohpapier
    • Teebeutelpapier
    • Transparentpapier
    • Vorsatzpapier
    • Weichpappen
    • Zeichenpapier
    • Zigarettenpapier
As paper come into consideration:
  • PRINT AND PRESS PAPERS
    • AP-papers
    • Bible paper
    • Art paper
    • Letterpress papers
    • Chlorine-free paper
    • printing paper
    • Thin paper
    • fine paper
    • Coated paper
    • Graphical recycled paper
    • Cast coated paper
    • Woodfree paper
    • Woody paper
    • Illustration printing paper
    • Art Paper
    • Copper printing paper
    • LWC paper
    • Machinecoated paper
    • Magazine paper
    • Nature paper
    • Surface sized paper
    • offset paper
    • recycled paper
    • Satin paper
    • SC paper
    • Gravure paper
    • Book paper
    • Magazine paper
    • Newsprint
  • OFFICE AND ADMINISTRATION PAPERS
    • AP-papers
    • Banknote paper
    • Bond paper
    • Envelope paper
    • handmade paper
    • Chlorine-free paper
    • document paper
    • Carbon paper
    • Continuous printing paper
    • fine paper
    • Sized paper
    • Graphical recycled paper
    • rag paper
    • Handmade paper
    • Bond paper
    • Woodfree paper
    • Woody paper
    • carton
    • index stock
    • carbon paper
    • copy paper
    • blotting paper
    • Airmail paper
    • Nature paper
    • NCR paper
    • offset paper
    • Poster paper
    • Postcard cardboard
    • recycled paper
    • Satin paper
    • writing paper
    • typing paper
    • Carbonless paper
    • Synthetic fiber papers
    • Fax paper
    • thermal paper
    • vellum
    • Vergépapier
    • Watermark paper
    • Security paper
  • PAPER, CARTON AND PAPER FOR PACKAGING
    • AP-papers
    • chromo
    • Chromo
    • chromoboard
    • duplex cardboard
    • Real parchment
    • label paper
    • folding boxboard
    • fine cardboard
    • Greaseproof paper
    • Coated paper
    • gray board
    • boxboard
    • Cast coated paper
    • wood cardboard
    • Impregnated paper
    • carton
    • kraftliner
    • Kraft paper
    • crepe paper
    • Machinecoated paper
    • machines board
    • machine cardboard
    • Wet-proof and alkali-resistant paper
    • oiled paper
    • wrapping paper
    • cardboard
    • greaseproof paper
    • glassine
    • sack paper
    • bogus
    • tissue
    • silicone paper
    • testliner
    • triplex
    • solid board
    • waxed paper
    • corrugated cardboard
    • corrugated paper
    • millboard
  • HYGIENE PAPERS
    • AP-papers
    • Chlorine-free paper
    • sanitary paper
    • crepe paper
    • Crepe tissue paper
    • kitchen towels
    • Hygienic tissue paper
    • Toilet paper
  • Paper and card for technical and special applications
    • Watercolor paper
    • Colored paper
    • roofing felt
    • decorative paper
    • electrical insulating
    • Filter paper
    • Flameproof paper
    • photo paper
    • glossy paper
    • Impregnated paper
    • Ingres
    • cable paper
    • body paper
    • suitcase cardboard
    • capacitor paper
    • Anticorrosive paper
    • Marbling
    • metal paper
    • papier
    • cardboard
    • security paper
    • Shoe cardboard
    • specialty papers
    • Wallpaper base
    • tea bag paper
    • Transparent Paper
    • endpapers
    • soft boards
    • drawing paper
    • cigarette paper

Die Papiere können sogenannte Rohpapiere sein, d. h. frei von irgendwelchen Strichen. Sie können aber auch jeweils einen Strich enthalten. Der erfindungsgemäße Basisstoff kann dem Rohpapier zugegeben sein, oder dem gestrichenen Papier. Im letztgenannten Falle kann der Basisstoff entweder dem Papier selbst, oder dem Strich, oder beiden zugegeben werden.The papers may be so-called base papers, d. H. free from any strokes. You can also include a dash in each case. The base material according to the invention may be added to the base paper or the coated paper. In the latter case, the base stock may be added either to the paper itself, or to the line, or both.

Das Papier kann in bekannter Weise anorganische Füllstoffe enthalten, ferner anorganische Pigmente wie Calciumcarbonat, Kaolin, Titandioxid, Talcum. Das Papier kann auch die üblichen chemischen Additive enthalten, wie Binder, CoBinder, Streichfarbadditive, Leimungsmittel, Nassverfestiger, Trockenverfestiger, Komplexbildner, Farbmittel, optische Aufheller, Biozide, Dispergiemittel, Entschäumer, Entlüfter, Reinigungsmittel, Retentionsmittel, Entwässerungsmittel, Fixiermittel, Flockungsmittel.The paper may contain inorganic fillers in a known manner, and also inorganic pigments such as calcium carbonate, kaolin, titanium dioxide, talcum. The paper may also contain the usual chemical additives such as binders, co-binders, paint additives, sizing agents, wet strength agents, dry strength agents, chelants, colorants, optical brighteners, biocides, dispersants, defoamers, deaerators, detergents, retention aids, dehydrating agents, fixatives, flocculants.

Besonders interessant ist die Anwendung der Erfindung bei Hygienepapieren. So kann einem Hygienepapier der erfindungsgemäße Basisstoff zugegeben werden, und zwar in geringen Mengen von wenigen Gewichtsprozent, bezogen auf das Gewicht des Gesamtproduktes, wie auch in einem hohen Prozentsatz. Es ist denkbar, dass ein solches Hygienepapier nur 1, 2, ... 5 Gew.-% an Basisstoff enthält, aber auch über 20 %, beispielsweise 20, 30, 40, 50 und mehr %. Auch kann das Hygienepapier Stoffe zur Körper- und Schönheitspflege enthalten. Solche Stoffe könnten auch beispielsweise dem erfindungsgemäßen Basisstoff beigefügt werden.Of particular interest is the application of the invention to sanitary papers. Thus, a hygiene paper, the base material of the invention may be added, in small quantities of a few weight percent, based on the weight of the total product, as well as in a high percentage. It is conceivable that such a tissue paper contains only 1, 2, ... 5 wt .-% of base material, but also about 20%, for example, 20, 30, 40, 50 and more%. The hygiene paper may also contain substances for cosmetic and beauty care. Such substances could also be added, for example, to the base material according to the invention.

Claims (8)

  1. A method for manufacturing a cellulose-based base material consisting of the following steps:
    1.1 a product containing cellulose as a starting material is mixed with water;
    1.2 the mixture is subjected to a shearing process, to comminute the cellulose particles into the nano size range and consequently to obtain the base material;
    1.3 the base material is added to another solid or liquid material containing fibre substances;
    1.4 the shearing process takes place until reaching a particle size with a length of 10 to 200 µm and a thickness of 0.5 to 15 µm
    1.5 the shearing process unfolds until reaching a total or partial colloidal condition of the cellulose.
  2. The method of claim 1, characterised by the following features:
    2.1 the cellulose fibres are mixed with an acid;
    2.2 water is added;
    2.3 the mixture is heated, so that the cellulose is hydrolysed;
    2.4 the shearing process is operated until reaching a particle size of 0.1 to 100 µm.
  3. A method according to claim 1 or 2, characterised in that the starting material is obtained from wood or other plants.
  4. The method according to one of the claims 1 to 3, characterised in that the hydrolysed cellulose disperses in a pulper.
  5. The method according to one of the claims 1 to 4, characterised in that of one of the following materials is used as a material containing fibres:
    paper
    cardboard
    coating colour for paper or cardboard
    aggregates for paper or cardboard
    wherein the aforementioned materials are available as solid flatly structures or in suspension or dispersion form.
  6. The method of claim 5, characterised in that tag paper, printing paper, LWC paper, copier paper, hygienic paper is used as paper.
  7. A cellulose-based base material in solid state for adding to a pulp suspension or to a coating colour having particles, with a length of 10 - 200 µm and a thickness of 0.5 - 15 µm or 0.1 - 100 µm.
  8. A paper or cardboard containing 0.1 - 50 % in weight, preferably 0.1 - 5 % in weight of the base material according to claim 7.
EP05790018.5A 2004-09-27 2005-09-27 Method for producing a cellulose-based material and material produced therewith Revoked EP1794366B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004047127 2004-09-27
PCT/EP2005/010421 WO2006034837A2 (en) 2004-09-27 2005-09-27 Method for producing a cellulose-based material and material produced therewith

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EP1794366A2 EP1794366A2 (en) 2007-06-13
EP1794366B1 true EP1794366B1 (en) 2013-04-24

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WO (1) WO2006034837A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1987195B1 (en) * 2006-02-23 2011-12-21 J. Rettenmaier & Söhne GmbH + Co. KG Base paper and production thereof
EP2022802B1 (en) 2007-08-10 2017-03-22 Dow Global Technologies LLC Nanoparticles from slightly oxidised cellulose
EP2022801B1 (en) * 2007-08-10 2018-01-17 Dow Global Technologies LLC Nanoparticles made of amorphous cellulose
AT505905B1 (en) 2007-09-21 2009-05-15 Chemiefaser Lenzing Ag CELLULOSE POWDER AND METHOD FOR THE PRODUCTION THEREOF
DE102008051359A1 (en) * 2008-10-15 2010-04-22 J. Rettenmaier & Söhne Gmbh + Co. Kg Ultrafine, dry cellulose
DE102009036551A1 (en) * 2009-08-10 2011-02-17 J. Rettenmaier & Söhne Gmbh + Co. Kg Pulp-containing cellulose-based material
US9776900B2 (en) 2014-01-14 2017-10-03 Buckman Laboratories International, Inc. Use of celluloses in sludge dewatering, and sludge products thereof
CN108517712A (en) * 2018-03-12 2018-09-11 华南理工大学 A kind of paper grade (stock) micro nanometer fiber mill base and the preparation method and application thereof

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Publication number Priority date Publication date Assignee Title
DE3618377A1 (en) * 1986-05-31 1987-12-03 Wolff Walsrode Ag METHOD FOR PRODUCING MICROCRYSTALLINE CELLULOSE
GB9101965D0 (en) * 1991-01-30 1991-03-13 Sandoz Ltd Improvements in or relating to organic compounds
DE4309845C2 (en) * 1993-03-26 1996-10-31 Seitz Filter Werke Filter material and process for its manufacture

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ES2416384T3 (en) 2013-07-31
WO2006034837A2 (en) 2006-04-06
WO2006034837A3 (en) 2007-03-29
EP1794366A2 (en) 2007-06-13

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