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EP1794366A2 - Method for producing a cellulose-based material and material produced therewith - Google Patents

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

Info

Publication number
EP1794366A2
EP1794366A2 EP05790018A EP05790018A EP1794366A2 EP 1794366 A2 EP1794366 A2 EP 1794366A2 EP 05790018 A EP05790018 A EP 05790018A EP 05790018 A EP05790018 A EP 05790018A EP 1794366 A2 EP1794366 A2 EP 1794366A2
Authority
EP
European Patent Office
Prior art keywords
paper
cellulose
base material
cardboard
dispersion
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
EP05790018A
Other languages
German (de)
French (fr)
Other versions
EP1794366B1 (en
Inventor
Harald Schlosser
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
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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
    • 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 cellulose fibers are mixed with an acid, the mixture is heated so that the cellulose is hydrolyzed - the resulting hydrolyzed cellulose is converted into a dispersion by addition of water or with / without comminution aids.
  • the dispersion is subjected to a shearing process to add the cellulose particles mince.
  • the crushing is carried out until reaching the nano-area.
  • the resulting product thus the mentioned base material, is present in particles with an average 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.
  • testliner Triplex cardboard Solid cardboard Wax paper Corrugated paper Corrugated paper Wrapped cardboard
  • 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.
  • 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.
  • 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)

Abstract

The invention relates to a method for producing a cellulose-based base material, consisting of the following steps: a starting product containing cellulose is mixed with water; the mixture is heated,wherein the product containing cellulose is hydrolyzed; the mixture undergoes a shearing process; in order to comminute the cellulose particles into the nano size range and to obtain the base material; the base material is added to another solid or liquid material containing fiber substances.

Description

Verfahren zum Herstellen eines Stoffes auf Cellulosebasis sowie hiermit hergestellter Stoff Process for producing a cellulose-based substance and substance produced therewith
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 Cellulosefasem 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:If acid is used, the following process steps are used:
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.the cellulose fibers are mixed with an acid, the mixture is heated so that the cellulose is hydrolyzed - the resulting hydrolyzed cellulose is converted into a dispersion by addition of water or with / without comminution aids. The dispersion is subjected to a shearing process to add the cellulose particles mince.
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 an average 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:Experiments with NDC have shown that the following properties of flat products of the type mentioned can be achieved:
- Erhöhung der Festigkeit- Increasing the strength
Wirkt als organisches wasserunlösliches PigmentActs as an organic water-insoluble pigment
Bei Druckpapieren ist die Farbintensität sowie das Druckbild deutlich besser als mit anorganischen PigmentenFor printing papers, the color intensity as well as the printed image is significantly better than with inorganic pigments
Hohe Farbabsorption - Thixotrope Eigenschaften, gutes FließverhaltenHigh color absorption - Thixotropic properties, good flow behavior
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 DruckGood 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 inks absorption during printing
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 (Blistem, Falzbrechen etc.)Very good print image, 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 Gloss-enhancing Avoiding blistering (blistering, hemming, 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:As paper come into consideration:
DRUCK- UND PRESSEPAPIEREPRINT AND PRESS PAPERS
AP-PapiereAP-papers
BibeldruckpapierBible paper
Bilderdruckpapier BuchdruckpapierePicture Paper Letterhead
Chlorfreies PapierChlorine-free paper
Druckpapierprinting paper
DünndruckpapierThin paper
Feinpapier Gestrichenes PapierFine paper coated paper
Graphisches RecyclingpapierGraphical recycled paper
Gussgestrichenes Papier Holzfreies PapierCast coated paper Woodfree paper
Holzhaltiges Papier lilustrationsdruckpapierWood-based paper illustration paper
Kunstdruckpapier KupferdruckpapierArt paper copperprint paper
LWC-PapierLWC paper
Maschinengestrichenes PapierMachinecoated paper
MagazinpapierMagazine paper
Naturpapier Oberflächengeleimtes PapierNatural paper Surface sized paper
Offsetpapieroffset paper
Recyclingpapierrecycled paper
Satiniertes PapierSatin paper
SC-Papier TiefdruckpapierSC paper rotogravure paper
WerkdruckpapierBook paper
ZeitschriftenpapierMagazine paper
ZeitungsdruckpapierNewsprint
BÜRO- UND ADMINISTRATIONSPAPIEREOFFICE AND ADMINISTRATION PAPERS
AP-PapiereAP-papers
BanknotenpapierBanknote paper
BankpostpapierBond paper
Briefumschlagpapier BüttenpapierEnvelope paper handmade paper
Chlorfreies PapierChlorine-free paper
Dokumentenpapierdocument paper
DurchschlagpapierCarbon paper
Endlosdruckpapier FeinpapierContinuous printing paper fine paper
Geleimtes PapierSized paper
Graphisches Recyclingpapier HadernpapierGraphical recycled paper rag paper
Handgeschöpftes PapierHandmade paper
HartpostpapierBond paper
Holzfreies Papier Holzhaltiges PapierWoodfree paper Woody paper
Kartoncarton
Karteikartonindex stock
Kohlepapiercarbon paper
Kopierpapier LöschpapierCopy paper blotting paper
LuftpostpapierAirmail paper
NaturpapierNature paper
NCR-PapierNCR paper
Offsetpapier PlakatpapierOffset paper poster paper
PostkartenkartonPostcard cardboard
Recyclingpapierrecycled paper
Satiniertes PapierSatin paper
Schreibpapier SchreibmaschinenpapierWriting paper typewriter paper
SelbstdurchschreibepapierCarbonless paper
SynthesefaserpapiereSynthetic fiber papers
TelefaxpapierFax paper
Thermopapier VelinpapierThermal paper vellum paper
VergepapierVergepapier
WasserzeichenpapierWatermark paper
WertzeichenpapierSecurity paper
PAPIER, KARTON UND PAPPE FÜR VERPACKUNGSZWECKE AP-Papiere Chromoersatzkarton ChromopapierPAPER, CARTON AND PAPER FOR PACKAGING AP Papers Chromo replacement cardboard Chromo
Chromokartonchromoboard
Duplexkartonduplex cardboard
Echt Pergament EtikettenpapierReal parchment label paper
Faltschachtelkartonfolding boxboard
Feinpappefine cardboard
Fettdichtes PapierGreaseproof paper
Gestrichenes Papier GraukartonCoated paper gray cardboard
Graupappeboxboard
Gussgestrichenes PapierCast coated paper
Holzkartonwood cardboard
Imprägniertes Papier KartonImpregnated paper carton
Kraftlinerkraftliner
KraftpapierKraft paper
Krepppapiercrepe paper
Maschinengestrichenes Papier MaschinenkartonMachine-coated paper machine board
Maschinenpappemachine cardboard
Nassfestes und laugenfestes PapierWet-proof and alkali-resistant paper
Ölpapieroiled paper
Packpapier PappeWrapping paper cardboard
Pergamentpapiergreaseproof paper
Pergaminglassine
Sackpapiersack paper
Schrenzpapier SeidenpapierShrink paper tissue paper
Silikonpapiersilicone paper
Testliner Triplexkarton Vollpappe Wachspapier Wellpappe Wellenpapier Wickelpappetestliner Triplex cardboard Solid cardboard Wax paper Corrugated paper Corrugated paper Wrapped cardboard
HYGIENEPAPIEREHYGIENE PAPERS
AP-Papiere Chlorfreies PapierAP papers Chlorine-free paper
Hygienepapiersanitary paper
Krepppapiercrepe paper
Krepp-HygienepapierCrepe tissue paper
Küchentücher Tissue-HygienepapierKitchen towels Tissue tissue paper
ToilettenpapierToilet paper
PAPIER UND PAPPE FÜR TECHNISCHE UND SPEZIELLEPAPER AND PAPER FOR TECHNICAL AND SPECIAL
VERWENDUNGSZWECKE AquarellpapierUSES Watercolor paper
BuntpapierColored paper
Dachpapperoofing felt
Dekorpapierdecorative paper
Elektroisolierpapier FiltrierpapierElectrical insulating paper filter paper
Flammfestes PapierFlameproof paper
Fotopapierphoto paper
Glanzpapierglossy paper
Imprägniertes Papier IngrespapierImpregnated paper Ingres paper
Kabelpapiercable paper
Karosseriepapier Kofferpappebody paper suitcase cardboard
Kondensatorpapiercapacitor paper
KorrosionsschutzpapierAnticorrosive paper
Marmorpapier MetallpapierMarble paper metal paper
Papiermachepapier mache
Pappecardboard
Sicherheitspapiersecurity paper
Schuhpappe SpezialpapiereShoe cardboard special papers
TapetenrohpapierWallpaper base
Teebeutelpapiertea bag paper
TransparentpapierTransparent Paper
Vorsatzpapier WeichpappenEndpaper soft cardboard
Zeichenpapierdrawing paper
Zigarettenpapiercigarette 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, Co- Binder, Streichfarbadditive, Leimungsmittel, Nassverfestiger, Trockenverfestiger, Komplexbildner, Farbmittel, optische Aufheller, Biozide, Dispergiemittel, Entschäumer, Entlüfter, Reinigungsmittel, Retentionsmittel, Entwässerungsmittel, Fixiermittel, Flockungsmittel. 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. 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. 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

Patentansprüche claims
1. Verfahren zum Herstellen eines Basisstoffes auf Cellulose-Basis mit den folgenden Verfahrensschritten: 1.1 es wird als Ausgangsmaterial ein cellulosehaltiges Produkt mit Wasser vermischt;1. A process for producing a cellulosic base material comprising the following process steps: 1.1 starting with a cellulose-containing product mixed with water;
1.2 das Gemisch wird einem Scherprozess unterworfen, um die Cellulose- Partikel bis zum Erreichen des Nano-Bereiches zu zerkleinern und hiermit den Basisstoff zu erlangen; 1.3 der Basisstoff wird einem anderen festen oder flüssigen faserstoff haltigen Material zugegeben.1.2 the mixture is subjected to a shearing process to comminute the cellulose particles until they reach the nano-scale and thereby obtain the base material; 1.3 the base material is added to another solid or liquid fibrous material.
2. Verfahren nach Anspruch 1 , gekennzeichnet durch die folgenden weiteren Verfahrensschritte: 2.1 die Dispersion wird vor oder während des Scherprozesses erhitzt.2. The method according to claim 1, characterized by the following further method steps: 2.1 the dispersion is heated before or during the shearing process.
3. Verfahren nach Anspruch 1 oder 2, gekennzeichnet durch die folgenden weiteren Merkmale:3. The method according to claim 1 or 2, characterized by the following further features:
3.1 das Ausgangsmaterial wird mit einer Säure gemischt; 3.2 das Gemisch wird erhitzt, wobei das cellulosehaltige Produkt hydrolisiert wird;3.1 the starting material is mixed with an acid; 3.2 the mixture is heated, whereby the cellulose-containing product is hydrolyzed;
3.3 die derart entstandene mikrokristalline Cellulose wird durch Zugabe von Wasser in eine Dispersion überführt.3.3 the resulting microcrystalline cellulose is converted by the addition of water in a dispersion.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Ausgangsmaterial aus Holz oder anderen Pflanzen gewonnen wird.4. The method according to any one of claims 1 to 3, characterized in that the starting material is obtained from wood or other plants.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Scherprozess bis zum Erreichen eines ganz oder teilweisen kolloidalen Zustandes der Cellulose durchgeführt wird. 5. The method according to any one of claims 1 to 4, characterized in that the shearing process is carried out until reaching a complete or partial colloidal state of the cellulose.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die hydrolisierte Cellulose in einem Pulper dispergiert.6. The method according to any one of claims 1 to 5, characterized in that the hydrolyzed cellulose dispersed in a pulper.
7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Scherprozess unter Verwendung eines der folgenden Aggregate durchgeführt wird:7. The method according to any one of claims 1 to 6, characterized in that the shearing process is carried out using one of the following aggregates:
- Kneter- kneader
- Einwellenzerfaserer- Single-shaft fiberizer
- Homogenisator mit engen Spalten, durch welche die Dispersion oder Suspenison hihdurchgedrückt wirdHomogenizer with narrow gaps through which the dispersion or suspenison is forced
- Stiftmühle- pin mill
- Mahleinrichtung mit Rotor und Stator- Grinding with rotor and stator
8. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass als faserstoffhaltiges Material eines der folgenden Materialien verwendet wird:8. The method according to any one of claims 1 to 5, characterized in that is used as a fibrous material one of the following materials:
Papierpaper
Kartoncarton
Streichfarbe für Papier oder Karton - Zuschlagstoffe für Papier oder Karton wobei die genannten Materialien als feste flächige Gebilde oder in Suspensions- oder Dispersionsform vorliegen.Coating for paper or cardboard - Aggregates for paper or cardboard, where the materials mentioned are in the form of solid sheets or in suspension or dispersion form.
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass als Papier Etikettenpapier, Druckpapier, LWC-Papier, Kopierpapier, Hygienepapier verwendet wird.9. The method according to claim 8, characterized in that as paper label paper, printing paper, LWC paper, copy paper, tissue paper is used.
10. Papier oder Karton oder ein anderes flächiges faserstoffhaltiges Material, gekennzeichnet durch einen Gehalt an einem organischen cellulosehaltigen Stoff mit einer durchschnittlichen Partikelgröße, die kleiner als 20 my ist. 10. Paper or board or other fibrous material comprising a content of an organic cellulosic material having an average particle size of less than 20 microns.
11. Papier oder Karton oder ein anderer flächiger faserstoffhaltiger Stoff, bei der die durchschnittliche Partikelgröße zwischen 20 und 10 my oder 20 und 5 my liegt.11. Paper or board or other fibrous fabric containing an average particle size between 20 and 10 my or 20 and 5 my.
12. Flächiges, faserstoffhaltiges Material nach Anspruch 10 oder 11 , dadurch gekennzeichnet, dass das Material Schreib- oder Druck- oder Hygienepapier ist. 12. Sheet-like, fibrous material according to claim 10 or 11, characterized in that the material is writing or printing or tissue paper.
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 true EP1794366A2 (en) 2007-06-13
EP1794366B1 EP1794366B1 (en) 2013-04-24

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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
WO2015108762A1 (en) 2014-01-14 2015-07-23 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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Title
See references of WO2006034837A3 *

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

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