EP2520709B1 - Sandeffektpapiermaterial und entsprechendes Herstellungsverfahren - Google Patents

Sandeffektpapiermaterial und entsprechendes Herstellungsverfahren Download PDF

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Publication number
EP2520709B1
EP2520709B1 EP12167036.8A EP12167036A EP2520709B1 EP 2520709 B1 EP2520709 B1 EP 2520709B1 EP 12167036 A EP12167036 A EP 12167036A EP 2520709 B1 EP2520709 B1 EP 2520709B1
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EP
European Patent Office
Prior art keywords
paper material
pigments
substrate
coating
kaolins
Prior art date
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Active
Application number
EP12167036.8A
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English (en)
French (fr)
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EP2520709A1 (de
Inventor
Luca Monacelli
Ferruccio Gilberti
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Gruppo Cordenons SpA
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Gruppo Cordenons SpA
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Publication of EP2520709A1 publication Critical patent/EP2520709A1/de
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Publication of EP2520709B1 publication Critical patent/EP2520709B1/de
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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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/40—Coatings with pigments characterised by the 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured

Definitions

  • the present invention relates to a sand-rough-effect paper material (paper/cardboard) and to the corresponding manufacturing method. More precisely, the paper material of the invention, thanks to an appropriately devised pulp and to a specific surface treatment, loses the typical feel of paper materials and is characterized by a feel similar to that of sand.
  • US 5334286 A and WO 00/22231 A1 disclose a tissue-type paper material, not suitable for printing with high quality.
  • An aim of the present invention is to provide a paper material that presents a feel different from that of traditional paper materials and at the same time enables a high printing quality.
  • the present invention hence regards a paper material and the corresponding manufacturing method as defined in the annexed Claims 1 and 7, respectively.
  • the invention hence provides a sand-effect paper material (paper/cardboard), which, thanks to an appropriately devised pulp and to a specific surface treatment, loses the typical feel of paper materials and is characterized by a feel similar to that of sand, having a rough surface finish typical of a surface covered with fine sand.
  • the paper material of the invention moreover ensures a high printing quality and enables particular graphic effects to be achieved, which are difficult to obtain with traditional coated papers.
  • the paper material of the invention comprises a substrate that is formed by a mixture of cellulose fibres and contains at least one polymeric substance, capable of bestowing (dry and wet) strength on the mixture of fibres, and an inorganic filler, capable of bestowing on the material good characteristics of machinability.
  • the substrate has at least one surface (face) treated with at least one surface adhesive and a glossy coating having particular components so that the paper material, owing to the combined effect of the composition of the substrate and of the surface treatment, presents a feel similar to that of sand.
  • both of the faces of the substrate can be treated in the same way.
  • the polymeric substance included in the substrate comprises one or more colophony-based and/or alkyl-ketene-dimer-based and/or acetyl-succinic-acid-based and/or epichlorohydrin-based resins, and/or modified starches
  • the inorganic filler is a mineral filler comprising one or more substances selected in the group consisting of carbonates, kaolins, talc, and mixtures thereof.
  • the surface adhesive is, for example, an adhesive with a base of starch and/or polyvinyl alcohol and/or acrylic, polyurethane and/or styrene-butadiene polymers.
  • the paper material of the invention is provided with a glossy coating, applied on the treated surface (clearly, the paper material can have both of the surfaces treated and provided with a glossy coating).
  • the glossy coating is formed by one or more binding polymers (for example, polyurethane-based and/or silicone-based polymers, and/or acrylic polymers, styrene-butadiene polymers, polyvinyl-acetate polymers, polyvinylalcohol polymers, and the like) and/or waxes, mixed with pigments, for example, pigments with a lamellar or flat structure, such as, for example, precipitated calcium carbonate (PCC), kaolins for coating, calcined and/or lamellar kaolins, in combination with pigments with a base of calcium silicates having different grain sizes and degree of whiteness higher than 85 (according to the DIN 5033 standard).
  • binding polymers for example, polyurethane-based and/or silicone-based polymers, and/or acrylic polymers, styrene-butadiene polymers, polyvinyl-acetate polymers, polyvinylalcohol polymers, and the like
  • waxes mixed with pigments
  • These calcium-silicate-based pigments preferably having particles of variable grain size and a particular degree of whiteness are especially important for achieving the desired effect.
  • the pigments comprise wallastonite (calcium silicate of formula CaSiO 3 ).
  • the amount of polymer per face is preferably comprised between 5% and 100% with respect to the pigments; the substance of the paper material is comprised between 90 g/m 2 and 350 g/m 2 ; the amount of glossy coating spread on each face is comprised between 5 g/m 2 and 20 g/m 2 .
  • the glossy coating may be coloured and/or spread on a coloured substrate; preferably, colours in paste form and organic or inorganic pigments are used.
  • the substrate is provided with techniques of formation of paper that are substantially known, for example, on a paper machine.
  • an aqueous pulp constituted by cellulose fibres, said pulp containing the polymeric substance (colophony-based and/or alkyl-ketene-dimer-based and/or acetyl-succinic-acid-based and/or epichlorohydrin-based resins, and/or modified starches) and the inorganic filler (carbonates, kaolins, talc, etc.).
  • polymeric substance colophony-based and/or alkyl-ketene-dimer-based and/or acetyl-succinic-acid-based and/or epichlorohydrin-based resins, and/or modified starches
  • the inorganic filler carbonates, kaolins, talc, etc.
  • aqueous solution of surface adhesive for example, made up of an aqueous solution of starch (10 wt%), and/or acrylic adhesive (5 wt%), or adhesives similar to the ones described previously (adhesives with a base of polyvinyl alcohol and/or of acrylic, polyurethane and/or styrene-butadiene polymers).
  • the treatment with the surface adhesive has also the purpose of bestowing on the paper material a correct penetration of water, indispensable for the subsequent coating step.
  • the method then comprises, after the surface treatment with adhesive, a step of smoothing of the substrate, where the substrate is smoothed up to Bendsten ISO 2494 roughness values of less than 50 ml/min and preferably of less than 30 ml/min, and indicatively 20 ml/min.
  • application of the glossy coating is performed by spreading carried out with an air-blade or smoothing-blade coating machine, and is followed by a step of drying of the coating, conducted in an infrared oven and/or hot-air oven at a temperature of between 100°C and 180°C and with an oven time of between 0.5 and 4 minutes.
  • the method comprises a step of mechanical treatment of the surface provided with the coating, in particular a smoothing step and/or an embossing step.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)

Claims (16)

  1. Sandraueffektpapiermaterial, umfassend ein Substrat, gebildet aus einer Mischung aus Zellulosefasern, enthaltend mindestens einen Polymerstoff, geeignet, um die Fasermischung zu verstärken, sowie einen anorganischen Füllstoff, und aufweisend mindestens eine Oberfläche, die mit mindestens einem Oberflächenkleber behandelt ist und einer Glanzbeschichtung versehen ist, gebildet aus einem oder mehreren bindenden Polymeren und/oder Wachsen, vermischt mit Pigmenten; und wobei die Pigmente Pigmente mit einer Basis aus Calciumsilikat umfassen, sodass das Papiermaterial eine sandähnliche raue Haptik besitzt, wobei die calciumsilikatbasierenden Pigmente eine variable Korngröße und einen Weißgrad aufweisen, der höher als 85 gemäß dem DIN-5033-Standard ist.
  2. Papiermaterial nach Anspruch 1, wobei der Polymerstoff, der im Substrat enthalten ist, ein oder mehrere kolophoniumbasierte und/oder alkylketendimerbasierte und/oder acetylbernsteinsäurebasierte und/oder epichlorhydrinbasierte Harze und/oder modifizierte Stärken umfasst.
  3. Papiermaterial nach Anspruch 1 oder Anspruch 2, wobei es sich beim anorganischen Füllstoff um einen Mineralfüllstoff handelt, der einen oder mehrere Stoffe umfasst, ausgewählt aus der Gruppe, bestehend aus Carbonaten, Kaolinen, Talk und Mischungen davon.
  4. Papiermaterial nach einem der vorangehenden Ansprüche, wobei es sich beim Oberflächenkleber um einen Kleber mit einer Stärke- und/oder Polyvinylalkohol- und/oder Acryl-, Polyurethan- und/oder Styrol-Butadien-Polymer-Basis handelt.
  5. Papiermaterial nach einem der vorangehenden Ansprüche, wobei die Glanzbeschichtung Pigmente mit einer lamellaren oder flachen Struktur umfasst wie z. B. gefälltes Calciumcarbonat (PCC), Kaoline für die Beschichtung, kalzinierte und/oder lamellare Kaoline, in Kombination mit den calciumsilikatbasierenden Pigmenten.
  6. Papiermaterial nach einem der vorangehenden Ansprüche, wobei die bindenden Polymere polyurethanbasierte, acrylbasierte, polyvinylalkoholbasierte, styrolbutadienbasierte und/oder silikonbasierte Polymere umfassen.
  7. Verfahren zur Herstellung des Papiermaterials nach einem der vorangehenden Ansprüche, umfassend die folgenden Schritte:
    (a) Vorbereiten eines wässrigen Breis aus Zellulosefasern, enthaltend mindestens einen Polymerstoff, geeignet, um die Fasermischung zu verstärken, sowie einen anorganischen Füllstoff;
    (b) Beseitigen des Wassers aus dem Brei, um ein Substrat des Papiermaterials zu bilden;
    (c) Behandeln mindestens einer Oberfläche des Substrats mit mindestens einem Oberflächenkleber, sodass dem Substrat Eigenschaften des Wassereindringens verliehen werden, die für einen nachfolgenden Beschichtungsschritt geeignet sind; und
    (d) Auftragen, auf die behandelte Oberfläche, eine Glanzbeschichtung, gebildet aus einem oder mehreren bindenden Polymeren und/oder Wachsen, vermischt mit Pigmenten, die calciumsilikatbasierte Pigmente umfassen, sodass das Papiermaterial eine sandähnliche Haptik besitzt, wobei die calciumsilikatbasierten Pigmente eine variable Korngröße und einen Weißgrad aufweisen, der höher als 85 gemäß dem DIN-5033-Standard ist.
  8. Verfahren nach Anspruch 7, wobei der Polymerstoff, der im Substrat enthalten ist, ein oder mehrere kolophoniumbasierte und/oder alkylketendimerbasierte und/oder acetylbernsteinsäurebasierte und/oder epichlorhydrinbasierte Harze und/oder modifizierte Stärken umfasst.
  9. Verfahren nach Anspruch 7 oder Anspruch 8, wobei es sich beim anorganischen Füllstoff um einen Mineralfüllstoff handelt, der einen oder mehrere Stoffe umfasst, ausgewählt aus der Gruppe, bestehend aus Carbonaten, Kaolinen, Talk und Mischungen davon.
  10. Verfahren nach einem der Ansprüche 7 bis 9, wobei es sich beim Oberflächenkleber um einen Kleber mit einer Stärke- und/oder Polyvinylalkohol- und/oder Acryl-, Polyurethan- und/oder Styrol-Butadien-Polymer-Basis handelt.
  11. Verfahren nach einem der Ansprüche 7 bis 10, wobei die Glanzbeschichtung Pigmente mit einer lamellaren oder flachen Struktur umfasst, wie z. B. Calciumcarbonat, gefälltes Calciumcarbonat (PCC), kalzinierte und/oder lamellare Kaoline, Kaoline zur Beschichtung in Kombination mit den calciumsilikatbasierenden Pigmenten.
  12. Verfahren nach einem der Ansprüche 7 bis 11, wobei die bindenden Polymere polyurethanbasierte, acrylbasierte, polyvinylalkoholbasierte, styrolbutadienbasierte und/oder silikonbasierte Polymere umfassen.
  13. Verfahren nach einem der Ansprüche 7 bis 12, umfassend, nach der Oberflächenbehandlung mit Kleber, einen Schritt des Glättens des Substrats, wobei das Substrat bis zu Rauheitswerten nach Bendtsen ISO 2494 von weniger als 50 ml/min geglättet wird, vorzugsweise von weniger als 30 ml/min und etwa von 20 ml/min.
  14. Verfahren nach einem der Ansprüche 7 bis 13, wobei der Schritt des Auftragens der Glanzbeschichtung mit einer Beschichtungsmaschine mit Luftmesser oder Flächenspachtel durchgeführt wird.
  15. Verfahren nach einem der Ansprüche 7 bis 14, umfassend einen Schritt des Trocknens der Glanzbeschichtung, durchgeführt in einem Infrarotofen und/oder einem Heißluftofen bei einer Temperatur zwischen 100 °C und 180 °C und mit einer Trocknungszeit zwischen 0,5 und 4 Minuten.
  16. Verfahren nach einem der Ansprüche 7 bis 15, umfassend einen Schritt der mechanischen Bearbeitung der Oberfläche, versehen mit der Glanzbeschichtung, insbesondere einen Schritt zum Glätten und/oder einen Schritt zum Prägen.
EP12167036.8A 2011-05-06 2012-05-07 Sandeffektpapiermaterial und entsprechendes Herstellungsverfahren Active EP2520709B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000779A ITMI20110779A1 (it) 2011-05-06 2011-05-06 Materiale cartaceo ad effetto-sabbia e relativo procedimento di fabbricazione

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EP2520709A1 EP2520709A1 (de) 2012-11-07
EP2520709B1 true EP2520709B1 (de) 2016-03-30

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EP (1) EP2520709B1 (de)
ES (1) ES2579057T3 (de)
IT (1) ITMI20110779A1 (de)
PT (1) PT2520709T (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20130979A1 (it) * 2013-06-13 2014-12-14 Gruppo Cordenons Spa Materiale cartaceo ad effetto olografico e metallico perlescente e relativo procedimento di fabbricazione
US9777143B2 (en) 2014-04-11 2017-10-03 Georgia-Pacific Consumer Products Lp Polyvinyl alcohol fibers and films with mineral fillers and small cellulose particles
US9777129B2 (en) 2014-04-11 2017-10-03 Georgia-Pacific Consumer Products Lp Fibers with filler
CN104674596B (zh) * 2015-02-05 2016-12-07 骏源新材料（上海）有限公司 一种触感纸的制备方法
ITUB20160512A1 (it) * 2016-02-01 2017-08-01 Gruppo Cordenons Spa Materiale cartaceo ad effetto metallico perlescente ad alta solidita' alla luce e relativo procedimento di fabbricazione
ITUA20161829A1 (it) * 2016-03-18 2017-09-18 Gruppo Cordenons Spa Carta tissue ad uso igienico e sanitario e relativo procedimento di fabbricazione
IT202100032753A1 (it) * 2021-12-28 2023-06-28 Gruppo Cordenons Spa Materiale cartaceo a totale chiusura particolarmente per uso nell’industria alimentare

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4118340C2 (de) * 1991-06-04 1996-07-11 Drescher Geschaeftsdrucke Verfahren zur Herstellung eines Papiererzeugnisses, danach hergestelltes Papiererzeugnis und Verwendung desselben
US5334286A (en) * 1993-05-13 1994-08-02 The Procter & Gamble Company Tissue paper treated with tri-component biodegradable softener composition
DE19706574C2 (de) * 1997-02-20 1999-07-08 Stora Publication Paper Ag Papier mit einer im Gußstreichverfahren aufgebrachten Beschichtung, Verfahren zu seiner Herstellung und seine Verwendung
US6607637B1 (en) * 1998-10-15 2003-08-19 The Procter & Gamble Company Soft tissue paper having a softening composition containing bilayer disrupter deposited thereon
KR20070028249A (ko) * 2005-09-07 2007-03-12 오지 세이시 가부시키가이샤 도공지

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ITMI20110779A1 (it) 2012-11-07
PT2520709T (pt) 2016-07-11
EP2520709A1 (de) 2012-11-07
ES2579057T3 (es) 2016-08-04

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