WO2001062510A1 - Papier recepteur - Google Patents

Papier recepteur Download PDF

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Publication number
WO2001062510A1
WO2001062510A1 PCT/FI2000/000146 FI0000146W WO0162510A1 WO 2001062510 A1 WO2001062510 A1 WO 2001062510A1 FI 0000146 W FI0000146 W FI 0000146W WO 0162510 A1 WO0162510 A1 WO 0162510A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
absoφtion
density
ink
carrier
Prior art date
Application number
PCT/FI2000/000146
Other languages
English (en)
Inventor
Rune SKÅTAR
Heikki Korpela
Ulf Enkvist
Leif Fagerholm
Hannu Karhuketo
Original Assignee
Upm-Kymmene Corporation
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 Upm-Kymmene Corporation filed Critical Upm-Kymmene Corporation
Priority to PCT/FI2000/000146 priority Critical patent/WO2001062510A1/fr
Publication of WO2001062510A1 publication Critical patent/WO2001062510A1/fr

Links

Classifications

    • 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
    • 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
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/506—Intermediate layers

Definitions

  • the present invention relates generally to paper manufacture and more particularly to printer paper and printer paper manufacturing. Paper according to the invention may be used especially in ink-jet printers.
  • Printer papers of this kind comprise an absorption layer that receives the ink jet, spreads the ink evenly and absorbs the water from the ink rapidly so that the ink remains on the surface creating a sharp image.
  • a carrier comprising paper or plastic below the abso ⁇ tion layer.
  • printer papers are manufactured so that an aqueous solution or dispersion of the abso ⁇ tion material is spread on the carrier with a roll or a doctor blade, after which the product obtained is dried.
  • a printer paper as described above is presented in the publication EP-A-650850.
  • the carrier is a paper coated with polyolefin and the abso ⁇ tion layer contains a synthetic hydrophilic polymer.
  • the present invention relates to the printer paper claimed in Claim 1. Some advantageous applications of the invention are presented in the other Claims.
  • the printer paper according to the invention has an ink absorbing surface layer that contains a hydrophilic polymer and that has been attached by the extrusion technique to a carrier containing paper.
  • Manufacturing by the extrusion technique is economical and also fast because, for example, there is no need to remove large quantities of water.
  • the printer paper according to the invention has an extruded abso ⁇ tion layer containing hydrophilic polymer.
  • the polymer may for example be a plasticized biopolymer, such as starch, ethyl cellulose, methyl cellulose or gelatine, or a synthetic plasticized water- soluble polymer such as polyvinyl alcohol, polyvinyl pyrrolidone, poly(ethyl oxazolin) or polyoxalin.
  • the working temperature may, for example, be 100-300°C, usually 190— 240°C.
  • the melt viscosity may, for example, be 2-30 g/10 min (190°C, 2.16 kg), usually 3-15 g/10 min (190°C) or 6-17 g/10 min (230°C).
  • the density may for example be 1150- 1400 kg/m 3 .
  • the polymer used is not thermoplastic, it should be plasticized to make it extrudable.
  • the polymer may be plasticized, for example, by using external plasticizers such as water, polyethylene glycol, polyvalent alcohol, or by copolymerizing with for example (poly)ethylene oxide, acrylic acid or methacrylic acid.
  • the abso ⁇ tion layer absorbs the ink. When printing, it absorbs the water from the ink rapidly and in a controlled manner so that most of the ink remains on the surface creating a sha ⁇ image.
  • the abso ⁇ tion layer may also be formed of several part layers.
  • the thickness of the abso ⁇ tion layer may for example be 2-60 g/m 2 , especially 5-15 g/m 2 .
  • the carrier has a layer comprising paper, board or plastic and, if necessary, other layers to give desired properties such as strength, smoothness, non-stretching, adhesiveness or the nonwettability of the paper.
  • the carrier may also be formed of several part layers.
  • the paper or board may, for example, be pigment coated or supercalendered or coated with plastic such as polyalkene film.
  • the plastic in the carrier may, for example, be polyethylene terephthalate, oriented polyethylene terephthalate, polypropene, oriented polypropene, biaxially oriented polypropene, polyvinyl chloride, oriented polyamide, polyamide or polyethylene.
  • the thickness of the earner may, for example, be 50-300 g/m 2 , especially 80-150 g/m 2 .
  • the paper or board layer imparts especially the properties of rigidity, brightness, opacity and strength.
  • the barrier layer may comprise one or several plastic layers that may be formed simultaneously by the coextrusion technique.
  • the plastics may, for example, be polyalkenes, ethylene based colopymers or te ⁇ olymers.
  • the back surface of the printer paper may be provided, for example, with a plastic protective layer that protects the paper layer by preventing for example the abso ⁇ tion of moisture.
  • the backing surface may be treated further as desired, for example by coating. The treatment can, for example, prevent the papers from adhering to each other or to other surfaces and create suitable friction so that the paper easily runs in printers, or, for example, prevent the paper from deforming or create an easy-wnte surface on which all normal pens leave a mark.
  • adhesion layers may be used between the layers there may be adhesion layers to improve the adhesion of the layers to each other.
  • An adhesion layer is especially suitable for use between the carrier and the abso ⁇ tion layer.
  • self-adhesive laminate can also be manufactured, in which the bottom-most layer is release paper, on top of which there is a pressure sensitive glue layer (see for example EP-865365), on top of which there is an ink-jet paper.
  • the abso ⁇ tion layer may also comprise different additives to gain the desired qualities.
  • pigments can be used to regulate ink abso ⁇ tion (drying time), density and image sha ⁇ ness and ink diffusion in the y-x dimension and the rate of abso ⁇ tion in the z dimension.
  • Usable pigments are for example bentonite, various silicon dioxides, aluminium oxides, aluminium hydrates and aluminium hydroxides.
  • the abso ⁇ tion layer may comprise, for example, optical brighteners, cationic additives or lubricants.
  • the qualities of the abso ⁇ tion layer can be regulated in such a way that the optimum ink density is achieved. This often requires efficient use of the chromatography phenomenon. As the ink is being absorbed, the soluble colours remain mostly on the surface and the water acting as a solvent penetrates deeper. In the drying process, the colour returns to the surface.
  • the phenomenon may be optimized, for example, by regulating the pH and the degree of hydrolysis of the plastic. Optimal pH is 6-8 and the degree of hydrolysis 30-100 %. In this way the broadest possible colour space is achieved.
  • Photo-realistic paper should be non-curling, i.e. "lay-flat".
  • Extrusion coating makes it possible to avoid the tensions in the product caused by drying, which tensions may cause curling.
  • the relevant parameters are the differences in the plastic densities at extrusion temperature and room temperature, and the plastic modulus. The difference in the density creates shrinkage, the force of which depends on the modulus. Correctly chosen values have a compensatory effect on the curling due to drying.
  • Printer paper can be manufactured so that melted abso ⁇ tion material is passed through a suitable slot nozzle to form a film on top of a moving continuous web, after which the laminate is cooled so that the abso ⁇ tion material solidifies as a layer on the carrier surface. If the printer paper comprises several extrudable layers, the manufacturing may be done by multiple layer extrusion in which the layers are created in a single stage.
  • Extrusion coating as such has been described, for example, in the following articles: R. Edwards, Extrusion coating processing parameters for polyolefins, Converting & Packaging, Sept. 1987 and K. Kreisher, Extrusion coating becomes more sophisticated, Modern Plastic International, Dec. 1980.
  • an aqueous solution or aqueous dispersion may be applied on top of the abso ⁇ tion layer by flexographic, gravure, reverse gravure, air brush, roll or blade coating.
  • the thickness of the layer may, for example, be 1-20 g/m 2 , more frequently 1- 8 g/m 2 .
  • the layer is thinner than the extruded abso ⁇ tion layer. This improves the print quality further (sha ⁇ ness, density, spreading) and regulates the drying time and speed (abso ⁇ tion).
  • the aqueous solution may for example contain binders (such as polyvinyl alcohol, polyvinyl pyrrolidone, carboxy-methyl cellulose, polyethylene oxide, polyoxyalkyene), pigments (for example silicas, aluminium oxides and aluminium hydrates), anti-foaming agents, cross linking agents (for example glyoxal, zirkonate) and moisturizing agents.
  • binders such as polyvinyl alcohol, polyvinyl pyrrolidone, carboxy-methyl cellulose, polyethylene oxide, polyoxyalkyene
  • pigments for example silicas, aluminium oxides and aluminium hydrates
  • anti-foaming agents for example glyoxal, zirkonate
  • moisturizing agents for example contain binders (such as polyvinyl alcohol, polyvinyl pyrrolidone, carboxy-methyl cellulose, polyethylene oxide, polyoxyalkyene), pigments (for example silicas, aluminium oxides and aluminium hydrate
  • the chemical properties of the abso ⁇ tion layer and the barrier layer are regulated so that adhesion is created between them in coextrusion conditions.
  • the properties of the barrier layer are also regulated so that adhesion is created between the carrier and the barrier layers.
  • a barrier layer was coextruded on a supercalendered wood-free paper (100 g/m 2 ) at a temperature of 180-280°C, this layer comprising a 10 g/m 2 film of maleic anhydride/ethylene/acrylic ester-te ⁇ olymer (PE-ter I; comonomer concentration 19%, density 940 kg/m 3 , melt viscosity 5 g/10 min [2.16 kg, 190°C], melting point 95°C, Vicat fusion point 63 °C), and an abso ⁇ tion layer was coextruded at the temperature of 160-220 °C this layer comprising a 15 g/m 2 layer of polyvinyl alcohol (PVA I; density 1 250 kg/m 3 , melt viscosity 4 g/10 min [2.16 kg, 190°C] melting point 161°C, Tg glass transition temperature dry 26°C).
  • PVA I polyvinyl alcohol
  • the coextruder used comprised three coextruders, with a diameter of 18 mm and L/d 30. Line speed was 30-60 m/min.
  • PVA II polyvinyl alcohol
  • a surface abso ⁇ tion layer which comprised a 8 g/m 2 layer of a mixture (proportion 50/50) of polyvinyl pyrrolidone (PVP; density 1 051 kg/m 3 , viscosity in a 5% solution 150 cP, Tg glass transition temperature 174°C) and carboxy-methyl cellulose (CMC; density 1590 kg/m 3 , viscosity in a 5% solution 200 cP, degree of substitution 0.7).
  • PVP polyvinyl pyrrolidone
  • CMC carboxy-methyl cellulose
  • a base abso ⁇ tion layer was coextruded on a supercalendered wood-free paper (100 g/m 2 ) at a temperature of 160-220°C, which base abso ⁇ tion layer comprised a 20 g/m 2 layer of polyvinyl alcohol (PVA I; density 1250 kg/m 3 , melt viscosity 4 g/10 min [2.16, 190°C], melting point 161°C, Tg glass transition temperature dry 26°C), and a surface abso ⁇ tion layer was coextruded at a temperature of 90-190°C this layer comprising a 10 g/m 2 layer of polyethyl oxalin/polyethyl oxazolin (PEO; density 1 140 kg/m 3 , melt viscosity 16 000 P (180°C, 130 s- 1 ), melting point 110°C, Vicat fusion point 70°C).
  • PVA I polyvinyl alcohol
  • PEO polyethyl oxalin
  • a barrier layer was coextruded on a supercalendered wood-free paper (100 g/m 2 ) at a temperature of 180-300 °C, this barrier layer comprising 10 g/m 2 maleic anhydride/ethylene/acrylic ester-te ⁇ olymer (comonomer concentration 9%, density 940 kg/m 3 , melt viscosity 5 g/10 min [2.16 kg, 190°C], melting point 107°C, Vicat fusion point 85 °C), and as an abso ⁇ tion layer was coextruded at the temperature of 160-
  • PVP polyvinyl pyrrolidone
  • Papers manufactured according to examples 1-5 were printed using three ink-jet printers. For comparison, certain commercial papers were used for similar printing.
  • the adjacent table shows the black ink density of the sample paper printouts as compared to the average density of the commercial products.
  • the adjacent table shows further examples of different base coatings with one or two abso ⁇ tion layers and an adhesive layer.
  • the materials are as follows:
  • PVA I polyvinyl alcohol; density 1250 kg/m 3 , melt viscosity 4 g/10 min (2.16 kg, 190°C), melting point 161 °C, Tg glass transition temperature dry 26 °C
  • PVA IV polyvinyl alcohol containing 10% TiO 2 pigment; density 1250 kg/m 3 , melt viscosity 7 g/10 min (2.16 kg, 190°C), Tg glass transition temperature dry 42 °C
  • PVA V polyvinyl alcohol; density 1250 kg/m 3 , melt viscosity 2 g/10 min (2.16 kg, 190°C), melting point 174°C, Tg glass transition temperature dry 55 °C
  • PEter I maleic anhydride/ethylene/acrylic ester-te ⁇ olymer; comonomer concentration 19%, density 940 kg/m 3 , melt viscosity 5 g/10 min (2.16 kg, 190°C), melting point 95 ° C, Vicat fusion point 63 ° C PEter III:
  • Surface abso ⁇ tion layer is 2-20 g/m 2 , base abso ⁇ tion layer 2-40 g/m 2 , and adhesion layer 2-20 g/m 2 , together a maximum of 50 g/m 2 .
  • the adjacent table shows still further examples of different base coatings with one or two abso ⁇ tion layers and a polyethylene layer as a barrier layer.
  • the materials are as follows:
  • CMC carboxy-methyl cellulose; density 1 590 kg/m 3 , viscosity in a 5% solution 200 cP, degree of substitution 0.7
  • Starch modified starch; density 1 300 kg/m 2 , melt viscosity 98-136 g/10 min (2.16 kg, 180°C), glass transition temperature Tg 34-54 °C, Vicat fusion point 46 °C PVA rV: polyvinyl alcohol containing TiO 2 pigment; density 1250 kg/m 3 , melt viscosity 7 g/10 min (2.16 kg, 190°C), melting point 161 °C, Tg glass transition temperature dry 42°C PVA V: polyvinyl alcohol; density 1250 kg/m 3 , melt viscosity 2 g/10 min (2.16 kg,
  • PVA VI polyvinyl alcohol containing 10% synthetic silica pigment*; density 1250 kg/m 3 , melt viscosity 7 g/10 min (2.16 kg, 190°C), Tg glass transition temperature dry
  • PE polyethylene; density 915 kg/m 3 , melt viscosity 15 g/10 min (2.16 kg, 190°C), melting point 104°C, Vicat fusion point 80 °C
  • Surface abso ⁇ tion layer is 2-20 g/m 2 , base abso ⁇ tion layer 2 ⁇ 10 g/m 2 , and polyethylene layer 2-20 g/m 2 , together a maximum of 50 g/m 2 .
  • the adjacent table shows still further examples of different carrier coatings with an abso ⁇ tion layer, an adhesion layer, a polyethylene layer as a barrier layer, and below that another adhesion layer.
  • the adhesion of the polyethylene to the hydrophilic abso ⁇ tion layer is weak (especially at low running temperatures), the adhesion can be improved by using adhesion layers on both sides.
  • the materials used are as follows: PVA I: polyvinyl alcohol; density 1250 kg/m 3 , melt viscosity 4 g/10 min (2.16 kg,
  • PVA VI polyvinyl alcohol containing 10% synthetic silica pigment; density 1 250 kg/m 3 , melt viscosity 7 g/10 min (2.16 kg, 190°C), Tg glass transition temperature dry 42°C
  • PE polyethylene; density 915 kg/m 3 , melt viscosity 15 g/10 min (2.16 kg, 190°C), melting point 104°C, Vicat fusion point 80° C
  • PEter I maleic anhydride/ethylene/acrylic ester-te ⁇ olymer; comonomer concentration
  • PEA polyethylene/acryl-copolymer; containing 28% acrylate, density 940 kg/m 3 , melt viscosity 7 g/10 min (2.16 kg, 190°C), melting point 70°C, Vicat fusion point ⁇ 40°C
  • Temperature/ °C 180-290 180-280 180-280 Surface abso ⁇ tion layer is 2-20 g/m 2 , adhesive layers 2-20 g/m 2 , and polyethylene layer 2-20 g/m 2 , together a maximum of 50 g/m 2 .
  • the adjacent table shows still further examples of different base coatings with an abso ⁇ tion layer, an adhesion layer and under it a polyethylene layer as a barrier layer.
  • Abso ⁇ tion layer is 2-40 g/m 2 , adhesion layer 2-20 g/m 2 and polyethylene layer 2-20 g/m 2 , together a maximum of 50 g/m 2 .

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  • Laminated Bodies (AREA)

Abstract

L'invention concerne un papier d'impression conçu pour l'impression par jet d'encre et comprenant un support sur lequel on a déposé une couche d'absorption hydrophile. Selon l'invention, on a appliqué cette couche à l'aide d'une technique de couchage par extrusion. L'utilisation de cette technique d'extrusion permet d'économiser le coût de fabrication et d'accélérer la fabrication, étant donné, par exemple, qu'il n'est plus nécessaire de procéder à l'élimination de grandes quantités d'eau.
PCT/FI2000/000146 2000-02-23 2000-02-23 Papier recepteur WO2001062510A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FI2000/000146 WO2001062510A1 (fr) 2000-02-23 2000-02-23 Papier recepteur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2000/000146 WO2001062510A1 (fr) 2000-02-23 2000-02-23 Papier recepteur

Publications (1)

Publication Number Publication Date
WO2001062510A1 true WO2001062510A1 (fr) 2001-08-30

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ID=8555867

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2000/000146 WO2001062510A1 (fr) 2000-02-23 2000-02-23 Papier recepteur

Country Status (1)

Country Link
WO (1) WO2001062510A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004091926A1 (fr) * 2003-04-16 2004-10-28 Walki Wisa Oy Papier enregistreur et procede de fabrication de papier enregistreur
ITMI20121253A1 (it) * 2012-07-18 2014-01-19 Novamont Spa Composizioni di rivestimento per substrati cartacei e processi di patinatura che impiegano dette composizioni
EP3154791A4 (fr) * 2014-06-16 2017-07-19 Hewlett-Packard Development Company, L.P. Supports d'enregistrement imprimables

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999335A (en) * 1989-12-11 1991-03-12 Eastman Kodak Company Thermal dye transfer receiving element with blended polyethylene/polypropylene-coated paper support
EP0485240A1 (fr) * 1990-11-09 1992-05-13 The Mead Corporation Produit revêtu et méthodes d'obtention d'un support revêtu ou imprimé
US5763009A (en) * 1995-09-05 1998-06-09 Fuji Photo Film Co., Ltd. Process for producing support for recording material
EP0924094A1 (fr) * 1997-12-22 1999-06-23 Fuji Photo Film Co., Ltd. Méthode de préparation d'un support couché avec une résine
US5965242A (en) * 1997-02-19 1999-10-12 Eastman Kodak Company Glow-in-the-dark medium and method of making

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999335A (en) * 1989-12-11 1991-03-12 Eastman Kodak Company Thermal dye transfer receiving element with blended polyethylene/polypropylene-coated paper support
EP0485240A1 (fr) * 1990-11-09 1992-05-13 The Mead Corporation Produit revêtu et méthodes d'obtention d'un support revêtu ou imprimé
US5763009A (en) * 1995-09-05 1998-06-09 Fuji Photo Film Co., Ltd. Process for producing support for recording material
US5965242A (en) * 1997-02-19 1999-10-12 Eastman Kodak Company Glow-in-the-dark medium and method of making
EP0924094A1 (fr) * 1997-12-22 1999-06-23 Fuji Photo Film Co., Ltd. Méthode de préparation d'un support couché avec une résine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004091926A1 (fr) * 2003-04-16 2004-10-28 Walki Wisa Oy Papier enregistreur et procede de fabrication de papier enregistreur
ITMI20121253A1 (it) * 2012-07-18 2014-01-19 Novamont Spa Composizioni di rivestimento per substrati cartacei e processi di patinatura che impiegano dette composizioni
EP3154791A4 (fr) * 2014-06-16 2017-07-19 Hewlett-Packard Development Company, L.P. Supports d'enregistrement imprimables
US10166804B2 (en) 2014-06-16 2019-01-01 Hewlett-Packard Development Company, L.P. Printable recording media

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