EP3405613A1 - Matériau en papier à effet métallique nacré présentant une résistance élevée à la lumière et procédé de fabrication associé - Google Patents

Matériau en papier à effet métallique nacré présentant une résistance élevée à la lumière et procédé de fabrication associé

Info

Publication number
EP3405613A1
EP3405613A1 EP17702618.4A EP17702618A EP3405613A1 EP 3405613 A1 EP3405613 A1 EP 3405613A1 EP 17702618 A EP17702618 A EP 17702618A EP 3405613 A1 EP3405613 A1 EP 3405613A1
Authority
EP
European Patent Office
Prior art keywords
paper material
coating
base support
pearlescent pigments
material according
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
EP17702618.4A
Other languages
German (de)
English (en)
Other versions
EP3405613B1 (fr
Inventor
Luca Monacelli
Ferruccio Beniamino GILBERTI
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.)
Gruppo Cordenons SpA
Original Assignee
Gruppo Cordenons SpA
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 Gruppo Cordenons SpA filed Critical Gruppo Cordenons SpA
Publication of EP3405613A1 publication Critical patent/EP3405613A1/fr
Application granted granted Critical
Publication of EP3405613B1 publication Critical patent/EP3405613B1/fr
Active 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured
    • 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
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/64—Inorganic compounds
    • 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
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, 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
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
    • 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
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/60—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/005—Mechanical treatment

Definitions

  • the present invention refers to a paper material (paper/card) and to the relative manufacturing method.
  • a technical task of the present invention is to provide a paper material that has a different optical effect from conventional paper materials, while also being printable with high printing quality.
  • a paper material comprising a base support, made up of a mixture of cellulose fibres containing at least one polymeric substance, which is adapted to give the mixture of fibres mechanical strength, and an inorganic filler, said base support having at least one surface treated with at least one surface adhesive and at least one coating applied on said treated surface, characterized in that said coating comprises at least pearlescent pigments of high lightfastness.
  • the present invention also discloses a method for manufacturing the paper material, comprising the steps of:
  • the pearlescent pigments are borosilicates or aluminosilicates and in particular micas.
  • the pearlescent pigments are transparent borosilicates or aluminosilicates coated with metal oxides such as iron oxides, titanium oxides or tin oxides.
  • the pearlescent pigments are of various colours, particle sizes and shapes.
  • the coating comprises one or more binder polymers and/or waxes, in a mixture with said pearlescent pigments.
  • the coating comprises one or more binder polymers and/or waxes, in a mixture with said pearlescent pigments and with magnetic or diamagnetic metallic pigments.
  • the metallic pigments are of various colours, particle sizes and shapes.
  • the metallic effect pigments of the coating are those normally used for exterior grade paint. Therefore the coating contains pearlescent pigments and can optionally contain metallic pigments as well as the pearlescent pigments.
  • the coating may also contain organic and inorganic pigments in addition to the pearlescent pigments and the metallic pigments.
  • the invention therefore provides a pearlescent paper material (paper/card) of high lightfastness, thanks to a specially designed pulp and a specific surface coating treatment.
  • the paper material of the invention also proves to be perfectly printable with high printing quality and makes it possible to achieve particular graphic effects that are difficult to achieve with conventional coated papers.
  • the paper material of the invention comprises a base support made up of a mixture of cellulosic fibres and it contains at least one polymeric substance, adapted to give the mixture of fibres mechanical strength (when dry or wet), and an inorganic filler, adapted to give the material good machinability characteristics.
  • the base support has at least one surface (face) treated with at least one surface adhesive to which a coating is applied, so that, due to the combined effect of the composition of the base support and the surface treatment, the paper material has a pearlescent effect with various colours.
  • both faces of the base support may be treated in the same way.
  • the polymeric substance included in the base support comprises one or more colophony-based and/or alkyl-ketene-dimer-based and/or acetylsuccinic- acid-based and/or epochlorohydrin-based resins, and/or modified starches; and the inorganic filler is a mineral filler comprising one or more substances selected from the group constituted by carbonates, kaolins, talc and mixtures thereof.
  • the surface adhesive is for example an adhesive based on starch and/or polyvinyl alcohol- and/or acrylic-, polyurethane- and/or styrene-butadiene-based polymers.
  • the paper material according to the invention is provided with a coating, applied on the treated surface and clearly, the paper material may have both surfaces treated and provided with a coating.
  • the coating is formed by one or more binder polymers (e.g. polyurethane- and/or silicone-, and/or acrylic-, styrene-butadiene-, polyvinyl acetate-, polyvinyl alcohol-based polymers and the like) and/or waxes, in a mixture with dyes and pigments, e.g. pearlescent pigments of various colours, particle sizes and shapes with the characteristic of being stable to the exposure of the UV component of sunlight.
  • binder polymers e.g. polyurethane- and/or silicone-, and/or acrylic-, styrene-butadiene-, polyvinyl acetate-, polyvinyl alcohol-based polymers and the like
  • dyes and pigments e.g. pearlescent pigments of various colours, particle sizes and shapes with the characteristic of being stable to the exposure of the UV component of sunlight.
  • the quantity of polymer per face is preferably comprised between 5% by weight and 100% by weight with respect to the pigments; the paper basis weight of the paper material is comprised between about 90 and about 450 g/m ; the quantity of coating spread onto each face is comprised between about 5 and about 20 g/m .
  • the coating may be coloured and/or spread onto a coloured base support; preferably, coloured pastes and organic or inorganic pigments are used.
  • the paper material described hereinabove is realized using the following method.
  • the base support is realized first, using a substantially known paper-forming technique, for example on a continuous machine for manufacturing paper.
  • a substantially known paper-forming technique for example on a continuous machine for manufacturing paper.
  • an aqueous pulp comprising a mixture of cellulose fibres and containing the polymeric substance (colophony-based and/or alkyl-ketene-dimer- based and/or acetylsuccinic-acid-based and/or epochlorohydrin-based resins, and/or modified starches) and the inorganic filler (carbonates, kaolins, talc, etcetera) is prepared.
  • aqueous solution of surface adhesive for example made up of a 10% by weight aqueous solution of starch, and/or 5% by weight of acrylic adhesive, or similar adhesives.
  • the method then comprises a smoothing step of the base support, wherein the base support is smoothed up to Bendtsen ISO 2494 roughness values of less than approximately 450 ml/min., preferably of less than approximately 400 ml/min. and approximately around 350 ml/min, followed by an application step of the coating previously described.
  • the application of the coating takes place by spreading with an air knife or a smoothing blade, roto-offset, rotographic and flexographic techniques.
  • step of drying the coating carried out in an infrared and/or hot- air oven at a temperature within the range of 100°C approximately to 180°C approximately and with an oven time ranging between 0.5 and 4 minutes.
  • the method comprises a step of mechanically treating the surface provided with the coating, particularly a smoothing and/or an embossing step.

Landscapes

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

Abstract

L'invention concerne un matériau en papier qui comprend un support de base, constitué d'un mélange de fibres de cellulose contenant au moins une substance polymère, qui est conçue pour conférer une résistance mécanique au mélange de fibres, et une charge minérale, ledit support de base ayant au moins une surface traitée par au moins un adhésif de surface et au moins un revêtement appliqué sur ladite surface traitée, le revêtement comprenant au moins des pigments nacrés présentant une résistance élevée à la lumière.
EP17702618.4A 2016-02-01 2017-02-01 Matériau en papier à effet métallique nacré présentant une résistance élevée à la lumière et procédé de fabrication associé Active EP3405613B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB2016A000512A ITUB20160512A1 (it) 2016-02-01 2016-02-01 Materiale cartaceo ad effetto metallico perlescente ad alta solidita' alla luce e relativo procedimento di fabbricazione
PCT/EP2017/052094 WO2017134071A1 (fr) 2016-02-01 2017-02-01 Matériau en papier à effet métallique nacré présentant une résistance élevée à la lumière et procédé de fabrication associé

Publications (2)

Publication Number Publication Date
EP3405613A1 true EP3405613A1 (fr) 2018-11-28
EP3405613B1 EP3405613B1 (fr) 2020-01-22

Family

ID=55861034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17702618.4A Active EP3405613B1 (fr) 2016-02-01 2017-02-01 Matériau en papier à effet métallique nacré présentant une résistance élevée à la lumière et procédé de fabrication associé

Country Status (6)

Country Link
US (1) US20190040583A1 (fr)
EP (1) EP3405613B1 (fr)
CN (1) CN109072562B (fr)
ES (1) ES2786574T3 (fr)
IT (1) ITUB20160512A1 (fr)
WO (1) WO2017134071A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200353736A1 (en) * 2017-11-17 2020-11-12 Imerys Usa, Inc. Heat-seal coatings
WO2023126114A1 (fr) * 2021-12-28 2023-07-06 Gruppo Cordenons S.P.A. Matériau en papier aux propriétés virucides, biocides et de barrière à l'eau, aux graisses et aux huiles
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 (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5571557A (en) * 1995-05-09 1996-11-05 Chartpak, Inc. Faux glass etch product and process of preparing same
DE19704478A1 (de) * 1997-02-06 1998-08-13 Merck Patent Gmbh Lasermarkierbare Papiere und Kartonagen
DE69820282T2 (de) * 1997-09-30 2004-10-21 Ondeo Nalco Co Kolloidale borosilikate und ihre verwendung in der papierherstellung
GB0019575D0 (en) * 2000-08-10 2000-09-27 Clariant Int Ltd Process for the prepartion of paper having a special appearance
US6702922B2 (en) * 2002-07-17 2004-03-09 Mw Custom Papers, Llc Papers for use in decorative laminates and methods of making the same
ITVR20030054A1 (it) * 2003-05-07 2004-11-08 Cartiere Fedrigoni & C Spa Procedimento per la produzione di carta patinata ad effetto perlescente
DE102010049375A1 (de) * 2010-10-26 2012-04-26 Merck Patent Gmbh Pigmente
ITMI20110779A1 (it) * 2011-05-06 2012-11-07 Gruppo Cordenons Spa Materiale cartaceo ad effetto-sabbia e relativo procedimento di fabbricazione
US8728501B2 (en) * 2011-08-31 2014-05-20 Shanghai World-Prospect Chemtech Co., Ltd. Composite material of inorganic nonmetallic mineral loaded with titania layer, preparation process and use thereof
ITMI20130979A1 (it) * 2013-06-13 2014-12-14 Gruppo Cordenons Spa Materiale cartaceo ad effetto olografico e metallico perlescente e relativo procedimento di fabbricazione
CN103498386B (zh) * 2013-10-16 2015-06-24 湖北工业大学 一种珠光颜料防伪卷烟纸及其制备方法

Also Published As

Publication number Publication date
ES2786574T3 (es) 2020-10-13
WO2017134071A1 (fr) 2017-08-10
ITUB20160512A1 (it) 2017-08-01
CN109072562A (zh) 2018-12-21
CN109072562B (zh) 2021-10-29
EP3405613B1 (fr) 2020-01-22
US20190040583A1 (en) 2019-02-07

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