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WO2014198780A1 - Matériau de papier comportant des effets holographiques et métalliques perlés et son procédé de fabrication - Google Patents

Matériau de papier comportant des effets holographiques et métalliques perlés et son procédé de fabrication Download PDF

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Publication number
WO2014198780A1
WO2014198780A1 PCT/EP2014/062145 EP2014062145W WO2014198780A1 WO 2014198780 A1 WO2014198780 A1 WO 2014198780A1 EP 2014062145 W EP2014062145 W EP 2014062145W WO 2014198780 A1 WO2014198780 A1 WO 2014198780A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper material
coating
support base
mixture
manufacturing
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.)
Ceased
Application number
PCT/EP2014/062145
Other languages
English (en)
Inventor
Luca Monacelli
Ferruccio 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
Priority to EP14730836.5A priority Critical patent/EP2992143B1/fr
Priority to ES14730836.5T priority patent/ES2633944T3/es
Publication of WO2014198780A1 publication Critical patent/WO2014198780A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating

Definitions

  • the present invention relates to a paper material (paper/pasteboard) having holographic and pearlescent metallic effects and to the manufacturing process thereof.
  • the paper material of the invention exhibits a particular three- dimensional pearlescent effect.
  • the present invention relates therefore to a paper material and the manufacturing process thereof as defined in appended claims 1 and 8, respectively.
  • the invention provides therefore a pearlescent paper material (paper/pasteboard) having a three-dimensional holographic effect, owing to a specially-formulated pulp and a specific treatment of the surface, and to a production method that enables orientation of the pearlescent pigments according to a predetermined design.
  • 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 paper stocks.
  • the paper material of the invention comprises a support base made up of a mixture of cellulose fibres and containing at least one polymeric substance suitable for conferring strength (dry or wet) to the mixture of fibres, and an inorganic filler suitable for conferring good machinability characteristics to the material.
  • the polymeric substance included in the support base preferably comprises one or more colophony-based and/or alkyl-ketene-dimer-based and/or acetylsuccinic- acid-based and/or epichlorohydrin-based resins, and/or modified starches;
  • 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 support base has at least one surface (face) that is treated with at least one surface adhesive, preferably an adhesive based on starch and/or polyvinyl alcohol and/or acrylic, po!yurethane and/or styrene-butadiene polymers.
  • the paper material of the invention is provided with a coating applied on the surface treated with the adhesive (clearly, both surfaces of the paper material can be treated and provided with coating).
  • the coating comprises one or more binder polymers (for example polyurethane- and/or silieone-based polymers, and/or acrylic, styrene-butadiene, polyvinyl acetate, polyvinyl alcohol polymers, and similar polymers) and/or waxes, mixed with pigments, preferably magnetic or diamagnetic metallic pearlescent and/or magnetic or diamagnetic non-metallic pearlescent pigments of various colours and particle sizes.
  • binder polymers for example polyurethane- and/or silieone-based polymers, and/or acrylic, styrene-butadiene, polyvinyl acetate, polyvinyl alcohol polymers, and similar polymers
  • pigments preferably magnetic or diamagnetic metallic pearlescent and/or magnetic or diamagnetic non-metallic pearlescent pigments of various colours and particle sizes.
  • These pearlescent pigments are sensitive to a magnetic field so as to be oriented according to a predefined design.
  • the gram mage of the paper material preferably ranges between approximately 90 and approximately 350 g/m 2 ; the amount of coating spread on each face ranges between about 5 and 20 g/m ; and the amount of polymer in the coating is preferably within the range of 5% to 100% with respect to the pigments.
  • the coating can be coloured and/or spread on a coloured support base; preferably, paste stains and organic or inorganic pigments are used.
  • the paper material exhibits a holographic pearlescent effect with various colours.
  • the paper material described hereinabove is realized using the method as described below.
  • the support base is realized, using a substantially known technique for making paper, for example on a paper machine for manufacturing paper.
  • an aqueous pulp of cellulose fibres and containing the polymeric substance (colophony-based and/or alkyl-ketene-dimer-based and/or acetylsuccinic-acid-based and/or epichlorohydrin-based resins, and/or modified starches) and the inorganic filler (carbonates, kaolins, talc, etcetera) is prepared.
  • the water is then removed from the pulp so as to form the support base of the paper material.
  • aqueous solution of surface adhesive for example composed of a 10% by weight aqueous solution of starch, and/or 5% by weight acrylic adhesive, or similar adhesives based on polyvinyl alcohol and/or acrylic, polyurethane and/or styrene-butadiene polymers.
  • the method comprises then a step of smoothing the support base, in which the support base is smoothed up to Bendtsen (ISO 2494) smoothness values of less than about 50 ml/min and preferably of less than about 30 ml/min and indicative!)' of about 20 ml/min.
  • Bendtsen ISO 2494
  • Application of the coating preferably occurs by means of spreading using air-knife and/or smoothing-blade technology, rotooffset, rotographic and flexographic techniques.
  • the coating thus applied is then subjected to a magnetic field varying in intensity and applied preferably by means of a solenoid or a magnet structured so as to orient the pearlescent pigments according to different types of designs; this solenoid can be rotating at the same speed as the paper, oscillating on the plane x and/or fixed.
  • the method comprises a step for mechanical treatment of the surface provided with the coating, in particular a smoothing step and/or an embossing step. It should be observed that the wastewater and coating waste resulting from the production process in a paper mill must be treated for purification purposes.
  • Pollutants are present in various forms in the wastewaters of paper mills: sedimentable substances such as fibre, mineral fillers, etc., colloidal substances, and dissolved substances such as inorganic salts (chlorides, sulphates, etc.).
  • Step 1 Physico-chemical purification system
  • This step comprises the following treatments.
  • the first treatment applied for purification of the wastewater consists of grit removal, which is used for elimination of coarse solids such as paper, plastic, wood, etc., i.e. materials of large sizes capable of creating blockage in some units in the plant.
  • the wastewater coming from the machines and wastewater coming from the coating treatment are conveyed into the inlet tank for the purpose of making the concentration of polluting agents constant so as to optimize the subsequent treatments.
  • the wastewater in the equalization tank is constantly agitated so as to prevent sedimentation of pollutant substances on the bottom. Sediment flotation
  • the process of sedimentation is achieved by keeping the water in the sediment flotation unit in a quiet stage and thus sedimentation of the materials that are denser than the water takes place.
  • the force of gravity is used in the sedimentation step to separate the solid particles of a greater density than that of the water from the water.
  • the deposited materials consist of sand, inorganic oxides and biological sludge.
  • the sand settles on the bottom of the sediment flotation unit spontaneously, whereas the inorganic oxides and biological sludge are made to settle by adding chemical reagents such as alum and polyelectrolytes.
  • the colloidal substances are not completely separated from the water by the sedimentation process.
  • Cationic inorganic reagents that enable the formation of small floes are added to coagulate the colloids.
  • Flocculation is the agglomeration of destabilized particles into floes.
  • the floes With the addition of a flocculant such as a polyelectrolyte, the floes increase in size and settle or float according to their nature.
  • a flocculant such as a polyelectrolyte
  • the particles of a density approximately equal to that of the water are separated by means of the flotation process.
  • This process is based on the capacity of certain particles to bind to the gas bubbles, normally air bubbles, so as to form a gas-particle system having a density lower than the density of the water.
  • Sedimented sludge is removed by a doctor blade on the bottom of the sediment flotation unit, whereas the sludge floes are removed by a screw.
  • the sediment and floes are collected in two vats for subsequent pressing.
  • the purified water is collected through a drain placed at the centre of the tank and sent to the equalization tank of the biological purification system.
  • Step 2 Biological System
  • This step comprises the following treatments.
  • the wastewater After passing through the Physico-chemical purification system, the wastewater is sent to the equalization tank of the biological purification system.
  • the biological purification system utilizes a culture of aerobic bacteria that make it possible to lower the COD and remove the surfactants present in the wastewater.
  • An optimal pH level for the growth of the bacteria ranges between 6.5 and 7.5.
  • Bacteria need organic nutrients for growth and multiplication.
  • the biological purification processes use the metabolism of the bacteria for the transformation of the organic substances.
  • the bacteria use part of the organic substances dissolved in the wastewater for their development, transforming them into active sludge.
  • an aerobic bacterial culture is capable of transforming the carbon present in solution into new tissue and into carbon dioxide.
  • the high concentrations of bacteria present in the oxidation tank are possible owing to the recycling of active sludge by DAF.
  • Oxidation The aerobic bacteria use the oxygen dissolved in the water and to achieve optimal activity, oxygen is added to the water in the oxidation tank.
  • the organic substances and surfactants are removed in the oxidation tank.
  • Nitrogen is present principally in the form of ammonia initially bound in complex organic molecules.
  • Ammonia nitrogen can be biologically oxidized to nitrites:
  • nitrites can be oxidized further, biologically again, to nitrates:
  • the nitrogen tends to leave the liquid medium as nitrogen gas:
  • Phosphorus is necessary for the construction of the cell membrane of the aerobic bacteria, and therefore in its absence, it must be added to the water entering the purification plant. If in excess, however, it is removed by chemical precipitation processes, using coagulation/floccuiation products.
  • the separation of the organic sludge from the purified wastewater subsequently occurs in the DAF flotation tank (dissolved air flotation).
  • the sludge rises by flotation to the surface and the sludge is recovered by an Archimedean screw recycling in the oxidation tank. Excess sludge is sent to a sludge press.
  • the waters are filtered by eight sand filters and passed into the sedimentation tank for purified water so as to eliminate the last residues of fibre.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Paper (AREA)
  • Holo Graphy (AREA)

Abstract

La présente invention concerne un matériau de papier comprenant une base support, constituée d'un mélange de fibres de cellulose et contenant au moins une substance polymère appropriée pour conférer une résistance au mélange de fibres, et une charge inorganique appropriée pour conférer de bonnes caractéristiques d'aptitude au façonnage au mélange, ledit matériau de papier comportant au moins une surface externe traitée avec au moins un adhésif de surface et sur laquelle est appliqué au moins un revêtement, caractérisé en ce que ledit revêtement comprend des pigments perlés sensibles à un champ magnétique de sorte à être orientés selon un tracé prédéfini.
PCT/EP2014/062145 2013-06-13 2014-06-11 Matériau de papier comportant des effets holographiques et métalliques perlés et son procédé de fabrication Ceased WO2014198780A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14730836.5A EP2992143B1 (fr) 2013-06-13 2014-06-11 Matériau de papier comportant des effets holographiques et métalliques perlés et son procédé de fabrication
ES14730836.5T ES2633944T3 (es) 2013-06-13 2014-06-11 Material de papel que tiene efectos metálicos holográficos y nacarados y procedimiento de fabricación del mismo

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000979A ITMI20130979A1 (it) 2013-06-13 2013-06-13 Materiale cartaceo ad effetto olografico e metallico perlescente e relativo procedimento di fabbricazione
ITMI2013A000979 2013-06-13

Publications (1)

Publication Number Publication Date
WO2014198780A1 true WO2014198780A1 (fr) 2014-12-18

Family

ID=48877384

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/062145 Ceased WO2014198780A1 (fr) 2013-06-13 2014-06-11 Matériau de papier comportant des effets holographiques et métalliques perlés et son procédé de fabrication

Country Status (5)

Country Link
EP (1) EP2992143B1 (fr)
ES (1) ES2633944T3 (fr)
IT (1) ITMI20130979A1 (fr)
PT (1) PT2992143T (fr)
WO (1) WO2014198780A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4409280A (en) * 1981-09-21 1983-10-11 Mannington Mills Decorative surface coverings
WO1995006568A1 (fr) * 1993-09-02 1995-03-09 International Paper Company Couche de surface decorative et procede de production associe
US5571557A (en) * 1995-05-09 1996-11-05 Chartpak, Inc. Faux glass etch product and process of preparing same
WO2002012621A1 (fr) * 2000-08-10 2002-02-14 Clariant Finance (Bvi) Limited Processus de preparation de papier presentant une apparence speciale
WO2004099500A1 (fr) * 2003-05-07 2004-11-18 Cartiere Fedrigoni E C. S.P.A. Procede de production de papier couche a effet perle
EP1762656A2 (fr) * 2005-09-07 2007-03-14 Oji Paper Co., Ltd. Papier couché
WO2010076392A1 (fr) * 2008-12-31 2010-07-08 Valtion Teknillinen Tutkimuskeskus Nouveaux pigments et charges à base de polysaccharide
EP2520709A1 (fr) * 2011-05-06 2012-11-07 GRUPPO CORDENONS S.p.A. Structure cellulaire pour panneau à double courbure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4409280A (en) * 1981-09-21 1983-10-11 Mannington Mills Decorative surface coverings
WO1995006568A1 (fr) * 1993-09-02 1995-03-09 International Paper Company Couche de surface decorative et procede de production associe
US5571557A (en) * 1995-05-09 1996-11-05 Chartpak, Inc. Faux glass etch product and process of preparing same
WO2002012621A1 (fr) * 2000-08-10 2002-02-14 Clariant Finance (Bvi) Limited Processus de preparation de papier presentant une apparence speciale
WO2004099500A1 (fr) * 2003-05-07 2004-11-18 Cartiere Fedrigoni E C. S.P.A. Procede de production de papier couche a effet perle
EP1762656A2 (fr) * 2005-09-07 2007-03-14 Oji Paper Co., Ltd. Papier couché
WO2010076392A1 (fr) * 2008-12-31 2010-07-08 Valtion Teknillinen Tutkimuskeskus Nouveaux pigments et charges à base de polysaccharide
EP2520709A1 (fr) * 2011-05-06 2012-11-07 GRUPPO CORDENONS S.p.A. Structure cellulaire pour panneau à double courbure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2017134071A1 (fr) * 2016-02-01 2017-08-10 Gruppo Cordenons S.P.A. Matériau en papier à effet métallique nacré présentant une résistance élevée à la lumière et procédé de fabrication associé
CN109072562A (zh) * 2016-02-01 2018-12-21 考代诺斯集团股份有限公司 具有高耐光性的珠光金属效果纸材材料和相关制造方法
US20190040583A1 (en) * 2016-02-01 2019-02-07 Gruppo Cordenons S.P.A. Pearlescent Metallic Effect Paper Material With High Lightfastness And Related Manufacturing Method
CN109072562B (zh) * 2016-02-01 2021-10-29 考代诺斯集团股份有限公司 具有高耐光性的珠光金属效果纸材材料和相关制造方法

Also Published As

Publication number Publication date
PT2992143T (pt) 2017-07-25
EP2992143B1 (fr) 2017-04-19
EP2992143A1 (fr) 2016-03-09
ES2633944T3 (es) 2017-09-26
ITMI20130979A1 (it) 2014-12-14

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