EP2392467A1 - Substrat für den Tintenstrahldruck - Google Patents

Substrat für den Tintenstrahldruck Download PDF

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Publication number
EP2392467A1
EP2392467A1 EP10165096A EP10165096A EP2392467A1 EP 2392467 A1 EP2392467 A1 EP 2392467A1 EP 10165096 A EP10165096 A EP 10165096A EP 10165096 A EP10165096 A EP 10165096A EP 2392467 A1 EP2392467 A1 EP 2392467A1
Authority
EP
European Patent Office
Prior art keywords
range
sizing
substrate
compound
cationic
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
EP10165096A
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English (en)
French (fr)
Other versions
EP2392467B1 (de
Inventor
Wim Ballet
Rainer Lex
Jan Philipp Weihs
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.)
Sappi Netherlands Services BV
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Sappi Netherlands Services BV
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Filing date
Publication date
Application filed by Sappi Netherlands Services BV filed Critical Sappi Netherlands Services BV
Priority to EP20100165096 priority Critical patent/EP2392467B1/de
Publication of EP2392467A1 publication Critical patent/EP2392467A1/de
Application granted granted Critical
Publication of EP2392467B1 publication Critical patent/EP2392467B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41M5/502—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
    • B41M5/508—Supports
    • 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
    • B41M5/52—Macromolecular coatings
    • B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
    • 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
    • B41M5/5245—Macromolecular coatings characterised by the use of polymers containing cationic or anionic groups, e.g. mordants

Definitions

  • the present invention relates to the field of uncoated inkjet substrates which are particularly suitable for high-speed inkjet printing and which are well printable with current high-speed inkjet printing devices.
  • Inkjet printing has become one of the most popular and commonly used printing techniques. There is a wide range of substrates but also a wide range of different printing devices available on the market.
  • Printable substrates which are useful for ink-jet printing can be coated with a strong pigmented layer which then acts as an ink receiving layer.
  • uncoated inkjet papers which normally on both sides are provided with a so-called sizing layer which is much thinner than the above-mentioned strong pigmented ink receiving layer and which may or may not comprise pigments.
  • EP 0 534 906 discloses a sizing process for the sizing of cellulosic fibre materials with polytertiary amine compounds.
  • the corresponding sizing formulations are applied at a pH of 7.5 such as to make sure that the compounds are cationic.
  • WO 2009/096922 discloses an inkjet printable substrate with a porous ink receiving layer and a sobbing layer.
  • the corresponding coating layer comprises a binder and a metal oxide particulate with an organosilane reagent.
  • WO 2006/067273 discloses a high-speed inkjet printing paper with a sizing layer containing of a single cationic fixing agent applied on the surface of the web.
  • the cationic fixing agent can for example be polydadmac.
  • US 7704574 discloses a coated substrate suitable for ink-jet printing comprising several coating layers.
  • the printable substrate comprises, on at least one side, an essentially unpigmented sizing layer, which forms the ink receiving layer, i.e. which is in direct contact with one surface of a raw cellulosic or lignocellulosic substrate layer, and which on the opposite side forms the surface of the printable substrate for receiving the ink.
  • sizing layer essentially consists of a combination of a cationic inorganic polyaluminium hydroxychloride compound with at least one organic cationic polydimethylammonium compound.
  • This sizing formulation is applied as an aqueous formulation at a pH of less than 6 in which the cationic inorganic polyaluminium hydroxychloride is in solution and the cationic polydimethylammonium compound is in dispersion.
  • the cationic inorganic aluminium hydroxychloride is present in solution as a cationic inorganic polyaluminium hydroxychloride in combination with the dispersion of cationic polydimethylammonium compound at this low pH leads to a final dried sizing layer with improved general properties and in particular printing properties.
  • a corresponding printable substrate showed high water fastness, exceptionally high optical densities for a large number of different printer devices and excellent colour gamut as well as sufficient drop spreading in 100% black areas.
  • the sizing layer essentially consists of the above-mentioned constituents.
  • the sizing layer is completely free from additional compounds such as binders, pigments, brighteners.
  • Certain processing aids such as rheology modifiers, defoamers etc. may be present, however only in very minor proportion, typically below 5 weight percent, preferably below 2 weight percent. In principle such processing aids can also be completely absent.
  • the cationic inorganic polyaluminium hydroxychloride is applied as a solution of polymeric (Al 2 (OH) 5 Cl.2.5H 2 O).
  • the organic cationic polydimethylammonium compound is selected from the group of polydadmac, N,N-Dimethyl-1,3-Propanediamine polymer with epichlorhydrin, or mixtures thereof.
  • the organic cationic polydimethylammonium is selected as a N,N-Dimethyl-1,3-Propanediamine polymer with epichlorhydrin, preferably with a molecular weight in the range of 50,000-80,000 g/mol.
  • the dry weight ratio of the cationic inorganic polyaluminium hydroxychloride to the organic cationic polydimethylammonium compound is in the range of 0.25 - 4. Preferably it is in the range of 0.5 - 2, or 0.75 - 1.5, most preferably this ratio is in the range of 1.
  • the raw cellulosic substrate comprises at least 5 weight percent of filler, preferably at least 10 or at least 15 weight percent of filler. Preferably up to 30% or up to 20% filler are present.
  • the filler is preferably a fine particulate pigment filler, preferentially it is a calcium carbonate filler, more preferably precipitated calcium carbonate filler.
  • the corresponding cellulosic constituent of the raw substrate is preferentially softwood and/or Eucalyptus based pulp.
  • the pH of the aqueous formulation should be lower than 6.
  • the aqueous fonnulation has an even lower pH, namely preferentially a pH of less than 5.5, more preferably of less than 5.3, typically in the range of 4.5-5.5.
  • the dry weight ratio of the cationic inorganic polyaluminium hydroxychloride to the N,N-Dimethyl-1,3-Propanediamine polymer with epichlorhydrin is in the range of 0.5 - 2, preferably in the range of 1, and is applied at a pH in the range of 4.5-5.5, typically around 5.
  • the sizing layer is applied at a dry weight in the range of 1-4 g/m 2 , preferably in the range of 1-2 g/m 2 .
  • the total weight of the inkjet printable substrate (inclusive of the sizing layer(s) is in the range 40-150 g/m 2 , preferably 50 - 130 g/m 2 .
  • the sizing layer can be applied on one single side of the raw cellulosic substrates, preferably it is however applied on both sides of the raw cellulosic substrate.
  • the sizing is applied online, so within the paper machine and subsequent to the actual formation of the web.
  • the web Prior to the sizing step, the web can be only partially dried, preferably to a residual humidity in the range of 1 - 10%, preferably 2-5%, more preferably 3-4%.
  • the sizing layer is applied on both sides using a size press, in which the web is, in an online process, passed through a pair of rolls which deliver the sizing formulation in the desired amount.
  • the present invention relates to a method for making an inkjet printable substrate as described above.
  • a sizing formulation essentially consisting of a combination of a cationic inorganic polyaluminium hydroxychloride compound with at least one organic cationic polydimethylammonium compound, preferably with one single organic cationic polydimethylammonium compound and this under conditions such that the sizing formulation is present as an aqueous formulation at a pH of less than 6 in which the cationic inorganic polyaluminium hydroxychloride is in solution and the cationic polydimethylammonium compound is in dispersion.
  • the total solids content in the sizing formulation is in the range of 5-30%, preferably in the range of 10 - 20 % or 12-15%.
  • the sizing formulation on-line and essentially immediately subsequent to the process of the making of the raw cellulosic substrate web (optionally after partial drying) and for the sizing the web is passed through a size press. Further embodiments of the invention are laid down in the dependent claims.
  • C1 and C3 are comparative examples while C7, C10 and C11 are examples according to the invention.
  • Table 1 Sizing formulations, wherein the following definitions are applicable: SC: solids content (as actually analysed in the starting material); contents are given as parts in dry weight in the final coating formulation which had a total solids content adjusted in the range of 12-15 % w/w. SC (%) Formulation C1 Formulation C3 Formulation C7 Formulation C10 Formulation C11 Cartafix DPR 23,8 100 50 25 75 Cartafix LA 42,3 100 50 75 25
  • Cartafix DPR is an aqueous dispersion (> 23% w/w) of a high charge density polyamine/epichlorohydrin-based cationic; main ingredient 1,3-Propanediamine, N,N-dimethyl-, polymer with (chloromethyl)oxirane; Density (20°C) 1.06 kg/l; pH (as supplied) 4.5.
  • Cartafix LA is an aqueous solution (> 40% w/w) of polymeric highly basic aluminium hydroxyl chloride, chemically indicated as Al 2 (OH) 5 Cl.2-3H 2 O; its cationic charge density is about 4-5 times higher than that of aluminium sulphate; Density (20°C) 1,33 kg/l; pH (1% solution) 4.5.
  • an uncoated raw base paper (83 g/m 2 ) which was based on standard softwood kraft pulp (45-50%) and standard Eucalyptus kraft pulp (50-45%).
  • the pulp mixture as such was additionally provided with 18.5 % w/w of a commercially available PCC, with scalenohedral particle size, a mean particle diameter 1.8 ⁇ 0.2 ⁇ m, 57 ⁇ 5% particles ⁇ 2 ⁇ m, a BET specific surface area 5.5 ⁇ 1 m2/g and a Tappi (R 457, ISO 2469) brightness 94.5 ⁇ 1%.
  • the raw base substrate was surface sized on one side by means of a hand sheet rod coater device wherein approximately 1.5 g/m 2 sizing material was applied as to all papers C1, C3, C10 and C11. As to paper C7 the amount of sizing material was also varied to respectively 0.7 g/m 2 , 1.4 g/m 2 , 1.6 g/m 2 , 2.8 g/ M 2 and 3.6 glm 2 . In practice varying application amounts were provided for via appropriate aqueous dilution of the mixture of Cartafix DPR and Cartafix LA. The sizing layer was dried using conventional infrared drying techniques.
  • the final moisture was in the range of 4.5-5.5%.
  • the final grammage (area weight) of the uncoated paper was in the range of 85 g/m 2 . No calendaring was being applied.
  • an uncoated raw base paper (83 g/m 2 ) which was based on standard softwood kraft pulp (45-50%) and standard Eucalyptus kraft pulp (50-45%).
  • the pulp mixture as such was additionally provided with 18.5 % w/w of a commercially available PCC, with scalenohedral particle size, a mean particle diameter 1.8 ⁇ 0.2 ⁇ m, 57 ⁇ 5% particles ⁇ 2 ⁇ m, a BET specific surface area 5.5 ⁇ 1 m2/g and a Tappi (R 457, ISO 2469) brightness 94.5 ⁇ 1 %.
  • the raw base substrate was surface sized on both sides by means of a metered size press and varying amounts sizing material (1.2 - 3.6 g/m 2 /side) were applied to the raw base paper. In practice varying application amounts were provided for via appropriate aqueous dilution of the mixture of Cartafix DPR and Cartafix LA.
  • the sizing layer was dried using conventional infrared drying techniques.
  • the final moisture was in the range of 3.6-4.5%.
  • the final grammage (area weight) of the uncoated paper was in the range of approximately 85 - 90 glm 2 . No calendaring was being applied.
  • the resulting uncoated paper products were full-color printed on high-speed ink-jet press Oce Jetstream 2200.
  • the resulting uncoated paper products were full-color printed on high-speed ink jet press Kodak VL2000.

Landscapes

  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Paper (AREA)
  • Ink Jet (AREA)
EP20100165096 2010-06-07 2010-06-07 Substrat für den Tintenstrahldruck Active EP2392467B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20100165096 EP2392467B1 (de) 2010-06-07 2010-06-07 Substrat für den Tintenstrahldruck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100165096 EP2392467B1 (de) 2010-06-07 2010-06-07 Substrat für den Tintenstrahldruck

Publications (2)

Publication Number Publication Date
EP2392467A1 true EP2392467A1 (de) 2011-12-07
EP2392467B1 EP2392467B1 (de) 2014-03-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100165096 Active EP2392467B1 (de) 2010-06-07 2010-06-07 Substrat für den Tintenstrahldruck

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EP (1) EP2392467B1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0534906A1 (de) 1991-09-27 1993-03-31 Sandoz Ltd. Verfahren zum Leimen von Papier
US20040033377A1 (en) * 2002-06-10 2004-02-19 Koenig Michael F. Waterfast dye fixative compositions for ink jet recording sheets
EP1571000A2 (de) * 2004-03-04 2005-09-07 Oji Paper Co., Ltd. Tintenstrahl-Aufzeichnungsblatt
WO2006067273A1 (en) 2004-12-23 2006-06-29 M-Real Oyj Printing paper and a method for the production thereof
US20070092666A1 (en) * 2005-10-25 2007-04-26 Isp Investments Inc. Coating compositions for forming inkjet-receptive coatings on a substrate
WO2009096922A1 (en) 2008-01-31 2009-08-06 Hewlett-Packard Development Company, L.P. High quality porous ink-jet media
US7704574B2 (en) 2005-02-09 2010-04-27 Hewlett-Packard Development Company, L.P. Print media for ink-jet ink applications having improved image quality

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0534906A1 (de) 1991-09-27 1993-03-31 Sandoz Ltd. Verfahren zum Leimen von Papier
US20040033377A1 (en) * 2002-06-10 2004-02-19 Koenig Michael F. Waterfast dye fixative compositions for ink jet recording sheets
EP1571000A2 (de) * 2004-03-04 2005-09-07 Oji Paper Co., Ltd. Tintenstrahl-Aufzeichnungsblatt
WO2006067273A1 (en) 2004-12-23 2006-06-29 M-Real Oyj Printing paper and a method for the production thereof
US7704574B2 (en) 2005-02-09 2010-04-27 Hewlett-Packard Development Company, L.P. Print media for ink-jet ink applications having improved image quality
US20070092666A1 (en) * 2005-10-25 2007-04-26 Isp Investments Inc. Coating compositions for forming inkjet-receptive coatings on a substrate
WO2009096922A1 (en) 2008-01-31 2009-08-06 Hewlett-Packard Development Company, L.P. High quality porous ink-jet media

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