WO2007053681A1 - A paper substrate having enhanced print density - Google Patents

A paper substrate having enhanced print density Download PDF

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Publication number
WO2007053681A1
WO2007053681A1 PCT/US2006/042645 US2006042645W WO2007053681A1 WO 2007053681 A1 WO2007053681 A1 WO 2007053681A1 US 2006042645 W US2006042645 W US 2006042645W WO 2007053681 A1 WO2007053681 A1 WO 2007053681A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
sizing composition
substrate
paper substrate
sizing
Prior art date
Application number
PCT/US2006/042645
Other languages
English (en)
French (fr)
Inventor
Jay C. Song
Sen Yang
Yan C. Huang
Kapil M. Singh
Michael F. Koenig
David B. Shelmidine
Original Assignee
International Paper Company
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 International Paper Company filed Critical International Paper Company
Priority to JP2008538995A priority Critical patent/JP4995831B2/ja
Priority to EP06827277A priority patent/EP1951955B1/en
Priority to MX2015017578A priority patent/MX358994B/es
Priority to CA2627050A priority patent/CA2627050C/en
Priority to ES06827277T priority patent/ES2402210T3/es
Priority to PL06827277T priority patent/PL1951955T3/pl
Priority to BRPI0619648-9A priority patent/BRPI0619648B1/pt
Publication of WO2007053681A1 publication Critical patent/WO2007053681A1/en

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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/07—Nitrogen-containing 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/36—Polyalkenyalcohols; 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
    • D21H17/45—Nitrogen-containing groups
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching

Definitions

  • the present invention relates to a sizing composition that, when applied to paper
  • substrate creates a substrate, preferably suitable for inkjet printing, having increased
  • the substrate print density, print sharpness, low HST, and/or image dry time, the substrate
  • the present invention relates to a method of reducing the HST of a paper
  • Figure 1 A first schematic cross section of just one exemplified embodiment of the
  • FIG. 2 A second schematic cross section of just one exemplified embodiment of the
  • Figure 3 A third schematic cross section of just one exemplified embodiment of the
  • the present inventors have discovered a sizing composition that, when
  • substrate preferably has a high brightness.
  • the sizing composition may contain a pigment.
  • pigments are examples of pigments.
  • the pigment when it is a calcium carbonate, it may be in any form. Examples include
  • Omya Inc and OmyaJet B5260, C4440 and 6606 from Omya Inc.
  • the pigment may have any surface area. Those pigments having a high
  • surface area are included, including those having a surface area of greater than 20
  • square meters/gram preferably greater than 30 square meters/gram, more preferably
  • the sizing composition may contain a pigment at any amount.
  • composition may include from 0 to 99wt% based upon the total weight of the solids
  • the composition preferably at least 15wt%, more preferably at least 30wt%, most
  • composition This range may include 0, 1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55,
  • the sizing composition may contain a binder.
  • binders include,
  • polychloride emulsion modified starch such as hydroxyethyl starch, starch or
  • potato for example, poly aery lamide, modified polyacrylamide, polyol, polyol
  • glyoxal glyoxal urea, ethanedial, aliphatic polyisocyanate, isocyanate, 1 ,6
  • one embodiment includes a sizing composition
  • one embodiment relates to a
  • system including at least starch and deriviates thereof with polyvinyl alcohol.
  • the sizing composition may be any ratio so long as both are present in the composition.
  • the sizing composition may contain a ratio of starcli/PVOH wt%
  • This range includes 99/1, 50/1, 25/1, 15/1., 10/1, 9/1,
  • polyvinyl alcohol is produced by hydrolyzing polyvinyl acetate (PVA).
  • the PVOH are less viscous and more water soluble.
  • the PVOH may have a
  • %hydrolysis ranging from 100% to 75%.
  • the % hydrolysis may be 75, 76, 78, 80,
  • the % hydrolysis of the PVOH is
  • the sizing composition may contain a binder at any amount.
  • composition may contain at least one binder from 0 to 99wt%, preferably at least 10wt%, more preferably at least 20wt%, most preferably at least 30 wt% based on
  • the total weight of the solids in the composition may include 0, 1, 5, 10,
  • the sizing composition when the sizing composition contains a binder and a
  • the weight ratio of the binder/pigment may be any ratio.
  • pigment weight ratio may be from 99/1 to 1/99, preferably from 50/1 to 1/10, more
  • binder/pigment weight ratio is 7/10.
  • the sizing composition may contain at least one nitrogen containing organic compound
  • Exemplified nitrogen containing organic species are compounds,
  • oligomers and polymers are those containing one or more quaternary ammonium
  • Such functional groups may vary widely and include substituted and unsubstituted amines, imines, amides, urethanes, quaternary ammonium groups,
  • dicyandiamides and the like.
  • Illustrative of such materials are polyamines,
  • DEAMEMA diethylaminoethylmethacrylate
  • polyamides polyamides
  • glycigyl addition polymers poly[oxyethylene (dimethyliminio) ethylene
  • containing species are polymers and copolymers of diallyldimethyl ammonium
  • the sizing composition may contain at least one nitrogen containing organic compound
  • the sizing composition may contain the nitrogen containing
  • weight of the solids in the composition may include 0, 0.5, 1, 2, 3, 4, 5,
  • the composition based on the total weight of the solids in the composition, including any and all ranges and subranges contained therein.
  • the total weight of the solids in the composition including any and all ranges and subranges contained therein.
  • composition contains about 8wt% of the nitrogen containing species based on the
  • the sizing composition may contain at least one inorganic salt. Suitable
  • inorganic salts may be monovalent and/or divalent and/or trivalent and may contain
  • Exemplified inorganic salts are those
  • the cationic metal may be sodium, calcium, magnesium, and aluminum
  • the anionic counterion to the cationic metal of the inorganic salt may be
  • any halogen such as chloride, boride, fluoride, etc and/or hydroxyl group(s).
  • most preferred inorganic salt being sodium chloride.
  • the sizing composition may contain at least one inorganic salt at any amount.
  • the sizing composition may contain from 0 to 99wt%, preferably from 0.25 to 25
  • inorganic salt based on the total weight of the solids in the composition. This range
  • the sizing composition contains about 2.5wt% of the
  • inorganic salt based on the total weight of the solids in the composition.
  • the sizing composition may contain at least one optical brightening agent
  • OBA Suitable OBAs may be those mentioned in USSN 60/654,712 filed
  • the OBAs may be commercially available from
  • the OBA may be either cationic and/or anionic.
  • Example OBA is
  • the OBA contained in the sizing composition is cationic.
  • the sizing composition may contain any amount of at least one anionic OBA.
  • the sizing composition may contain anionic OBA at an amount from O to 99wt%,
  • range may include 0, 1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80,
  • the sizing composition contains about 35wt% of anionic
  • the sizing composition may contain any amount of at least one cationic
  • the sizing composition may contain cationic OBA at an amount from O to
  • composition This range may include 0, 1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55,
  • the sizing composition contains about 8wt% of
  • the present invention also relates to a paper substrate containing any of the
  • the paper substrate contains a web of cellulose fibers.
  • fibers may be from any fibrous plant.
  • the paper substrate of the present invention is
  • Recycled fibers may contain recycled fibers and/or virgin fibers. Recycled fibers differ from virgin fibers in that the fibers have gone through the drying process at least once.
  • the paper substrate of the present invention may contain from 1 to 99 wt%,
  • the fiber source may be any, the preferable sources of the cellulose
  • fibers are from softwood and/or hardwood.
  • the paper substrate of the present invention is from softwood and/or hardwood.
  • inventions may contain from 1 to 100 wt%, preferably from 5 to 95 wt%, cellulose
  • This range includes 1, 2, 5, 10, 15, 20, 25, 30, 35, 40,
  • the paper substrate of the present invention may contain from 1 to 100 wt%,
  • cellulose fibers originating from hardwood species preferably from 5 to 95 wt%, cellulose fibers originating from hardwood species
  • This range includes 1, 2, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95,
  • the hardwood/softwood ratio be from 0.001 to 1000. This range may
  • substrate of the present invention may be modified by physical and/or chemical
  • Examples of physical means include, but is not limited to, electromagnetic
  • Means for electrical modification include, but are not
  • Such means also involve, for example, cutting, kneading, pounding, impaling, etc means.
  • Examples of chemical means include, but is not limited to, conventional
  • chemical fiber modification means including crosslinking and precipitation of
  • optical brighteners i.e. OBAs
  • OBAs optical brighteners
  • One example of a recycled fiber is a "fine”. Sources of "fines" may be found
  • amount of "fines" present in the paper substrate can be modified by tailoring the rate at which such streams are added to the paper making process.
  • the paper substate preferably contains a combination of hardwood fibers
  • Fibers are, as discussed above,
  • Fines may typically be not more that 100 ⁇ m in
  • the fines are preferably not more than 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60,
  • the paper substrate may contain fines at any amount.
  • the paper substrate may contain fines at any amount.
  • the paper substrate contains not more than 0.01, 0.05, 0.1 ,
  • the paper substrate may also contain an internal sizing and/or external sizing
  • the internal sizing composition may be applied to the fibers during
  • compositions of the present invention may be the internal and/or external sizing
  • composition contained by the paper substrate of the present invention contains
  • FIGS 1-3 demonstrate different embodiments of the paper substrate 1 in the
  • Figure 1 demonstrates a paper substrate 1
  • composition 2 has minimal interpenetration of the web of cellulose fibers 3.
  • an embodiment may be made, for example, when a sizing composition is coated
  • Figure 2 demonstrates a paper substrate 1 that has a web of cellulose fibers 3
  • the interpenetration layer 4 of the paper substrate 1 defines a
  • the interpenetration layer may be from 1 to 99% of the entire cross
  • section of at least a portion of the paper substrate including I 5 2, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, and 99% of the paper substrate,
  • Addition points may be at the size press, for example.
  • Figure 3 demonstrates a paper substrate 1 that has a web of cellulose fibers 3
  • Such an embodiment may be
  • the paper substrate may be made by contacting any component of the sizing
  • the contacting may occur at acceptable concentration levels that provide the paper
  • substrate of the present invention to contain any of the above-mentioned amounts of
  • the contacting may occur anytime
  • the components of the sizing solution are preformulated either
  • the paper or paperboard of this invention can be prepared using known
  • the paper substrate may contain the sizing composition at any amount.
  • paper substrate may contain the sizing composition at an amount ranging from 70 to
  • This range includes, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190,
  • the paper substrate contains a size press applied sizing composition at an amount of 150
  • the paper substrate contains 1501bs of
  • the paper substrate contains 50% x 1501bs/ton of
  • the paper substrate contains any amount of at least one pigment.
  • substrate may contain from 0.5 wt % to 10 wt%, preferably from 1 to 8wt%, more
  • This range includes 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5 and 10wt% of pigment based upon the total weight of the substrate.
  • weight of the substrate including any and all ranges and subranges therein.
  • the paper substrate contains any amount of at least one binder.
  • substrate may contain from 0.1 wt % to 7 wt%, preferably from .2 to 5 wt%, more
  • binder preferably from 0.3 to 3wt%, most preferably from 1 to 3 wt% of binder based upon
  • the total weight of the substrate includes 0.1, 0.2, 0.3, 0.4, 0.5, 1, 1.5, 2,
  • the paper substrate contains any amount of at least one nitrogen containing
  • the paper substrate may contain from 0.01 wt % to 5 wt%, preferably
  • This range includes 0.01, 0.02, 0.03, 0.05, 0.07, 0.1, 0.2, 0.3, 0.4, 0.5,
  • the paper substrate contains any amount of at least inorganic salt.
  • substrate may contain from 0.001 wt % to 3 wt%, preferably from 0.01 to 2.5wt%,
  • inorganic salt based upon the total weight of the substrate. This range includes
  • inorganic salt based upon the total weight of the substrate, including any and all
  • the paper substrate may contain any amount of OBA.
  • the OBA may be any organic radical
  • the OBA may be supplied by the sizing composition as
  • the OBA may be any organic radical mentioned above and/or within the substrate itself.
  • the OBA may be any organic radical mentioned above and/or within the substrate itself.
  • the OBA may be any organic radical mentioned above and/or within the substrate itself.
  • the OBA may be any organic radical mentioned above and/or within the substrate itself.
  • the OBA may be any organic radical mentioned above and/or within the substrate itself.
  • the OBA may be any organic radical mentioned above and/or within the substrate itself.
  • the OBA may be any organic radicals mentioned above and/or within the substrate itself.
  • the paper substrate contains internal OBA and externally applied OBA.
  • the internal OBA may be cationic or
  • the externally applied OBA may be cationic or
  • the externally applied OBA is preferably
  • the paper substrate of the present invention may have any amount of OBA.
  • the OBA is present in as sufficient amount so that the paper has
  • the GE brightness is preferably at least 80, 85, 90, 91,
  • the paper may have a suitable amount of OBA and other additives
  • the paper preferably has a CIE whiteness of at least 130.
  • CIE whiteness may be at least 130, 135, 140, 145, 150, 155, 160, 65, 170, 175, 180,
  • the substrate contains an effective amount of OBA.
  • OBA effective amount of OBA is such that the GE brightness is at least 90, preferably at
  • the OBA may be a mixture of the above-mentioned internal and externally applied
  • OBA whether cationic and/or anionic so long as it is an effective amount.
  • the density, basis weight and caliper of the web of this invention may vary
  • inventions preferably have a final caliper, after calendering of the paper, and any
  • nipping or pressing such as may be associated with subsequent coating of from
  • the caliper is from about 4 mils to about 20 mils, and most
  • Paper substrates of the invention preferably exhibit basis weights of from
  • the basis weight is from about 301b/3000ft 2 to about 200 lb/3000ft 2 , and most preferably from about 35 lb/3000ft
  • the basis weight may be 10, 12, 15, 17, 20, 22, 25, 30,
  • the final density of the papers may be calculated by any of the above-
  • the basis weight divided by the caliper is preferably from about 6 lb/3000ft
  • the web density is from about 7 lb/3000ft 2 /mil to about
  • the web may also include other conventional additives such as, for example,
  • starch expandable microspheres, mineral fillers, bulking agents, sizing agents,
  • organic and inorganic pigments such as, by way of example, polymeric particles
  • wet strength resins internal sizes, dry strength resins, alum, fillers,
  • the internal sizing agents encompass any of those commonly used at
  • Ketene dimers are commercially available, as Aquapel.RTM. and Precis.RTM.
  • the paper substrate may be made by contacting further optional substances
  • cellulose fibers may occur anytime in the papermaking process including, but not
  • composition may be pre-mixed in any combination before addition to or during the
  • the paper substrate may be pressed in a press section containing one or more
  • nips any pressing means commonly known in the art of papermaking may be utilized.
  • the nips may be, but is not limited to, single felted, double felted,
  • the paper substrate may be dried in a drying section. Any drying means
  • drying can may include and contain a drying can, cylinder drying, Condebelt drying, IR, or
  • the paper substrate may be any drying means and mechanisms known in the art.
  • the paper substrate may be any drying means and mechanisms known in the art.
  • the paper substrate may be any drying means and mechanisms known in the art.
  • the paper substrate may be any drying means and mechanisms known in the art.
  • the paper substrate may be any drying means and mechanisms known in the art.
  • the paper substrate may be any drying means and mechanisms known in the art.
  • the paper substrate may be any drying means and mechanisms known in the art.
  • the substrate is
  • the paper substrate may be passed through a size press, where any sizing
  • puddle mode size press e.g. inclined, vertical, horizontal
  • metered size press e.g. blade metered, rod metered. At the size press, sizing
  • agents such as binders may be contacted with the substrate.
  • these same agents such as binders
  • sizing agents may be added at the wet end of the papermaking process as needed.
  • the paper substrate may or may not be dried again according to the
  • the paper substrate may be dried so as to contain any selected amount of water. Preferably, the substrate is dried to contain less than or
  • the sizing apparatus is a puddle size press.
  • the paper substrate may be calendered by any commonly known calendaring
  • wet stack calendering dry stack calendering, steel nip calendaring, hot soft
  • composition and/or particle of the present invention may reduce and alleviate
  • the paper substrate may be microfmished according to any microfinishing
  • Microfinishing is a means commonly known in the art of papermaking. Microfinishing is a means
  • substrate may be microfmished with or without a calendering means applied thereto
  • microfinishing means can be any suitable microfinishing means.
  • HST Hercules Sizing Test Value
  • the HST is measured using the
  • the paper substrate of the present invention may
  • the HST may be as much as 400, 300, 200,
  • the HST may be is as low as 0.1, 1, 5 and 10 seconds.
  • the HST is less than 10
  • the HST may be 0.001, 0.01, 0.05, 0.1 ,
  • the HST will vary directly with the basic weight of the
  • the paper substrate of the present invention may have any black optical
  • the black optical density may be 0.5, 0..6, 0.7, 0.8, 0.9, 1.0, 1.05, 1.06, 1.07, 1.08, 1.09, 1.10, 1.11, 1.12,
  • the paper substrate of the present invention may have any waterfastness.
  • the paper substrate of the present invention may have any waterfastness.
  • substrate may have a waterfastness of at least 90%, preferably at least 95%, more
  • the paper substrate may contain
  • An effective amount of pigment and binder An effective amount of pigment and
  • binder is that which bestows on the paper a black optical density that is at least 1.0
  • the present invention relates to a method of decreasing the HST of a paper
  • the above-mentioned sizing composition is contacted with a
  • substrate having a first HST and containing a web of cellulose fibers and optional
  • the sizing composition the web of cellulose fibers, and optional substance.
  • the present invention preferably reduces
  • the first HST by at least 10%, more preferably by at least 25%, most preferably by
  • This reduction range may be at least 10, 15, 20, 25, 30, 35, 40, 45, 50,
  • the p i gmented size press formulations were applied to an unsurface sized 90 gsm base paper using a rod mete ⁇ ng size press
  • the target coat weight or pick up is 6 gsm Calendering was done on a steel -to- steel lab calender at room temperature with a nip p ressure of 90 psi
  • the smoothness target is 125 Sheffield smoothness
  • Paper substrates having a basis weight of 24 lb/1300 square feet were made and a
  • the sizing compositions applied to the paper substrate are those according to
  • Mowiol 28-99 (Clariant) is a version of PVOH, which is 99% hydrolyzed and is of
  • the paper after size press was dried to 4.2 to 5.0% moisture.
  • the two numbers before and after the slash sign represent readings from the two
  • InkJet print densities are measured by means of optical densities with an X-
  • Densitometer manufactured by X-Rite Inc. Density is a function of the percentage

Landscapes

  • Paper (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
PCT/US2006/042645 2005-11-01 2006-11-01 A paper substrate having enhanced print density WO2007053681A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2008538995A JP4995831B2 (ja) 2005-11-01 2006-11-01 高印刷濃度を有する紙基材
EP06827277A EP1951955B1 (en) 2005-11-01 2006-11-01 A paper substrate having enhanced print density
MX2015017578A MX358994B (es) 2005-11-01 2006-11-01 Composicion de encolado.
CA2627050A CA2627050C (en) 2005-11-01 2006-11-01 A paper substrate having enhanced print density
ES06827277T ES2402210T3 (es) 2005-11-01 2006-11-01 Un sustrato de papel que tiene densidad de impresión mejorada
PL06827277T PL1951955T3 (pl) 2005-11-01 2006-11-01 Podłoże papiernicze o zwiększonej gęstości drukarskiej
BRPI0619648-9A BRPI0619648B1 (pt) 2005-11-01 2006-11-01 Composition applied in collage press and paper substrate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73282805P 2005-11-01 2005-11-01
US60/732,828 2005-11-01

Publications (1)

Publication Number Publication Date
WO2007053681A1 true WO2007053681A1 (en) 2007-05-10

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EP2356183B1 (en) 2008-12-08 2015-06-03 Hewlett-Packard Development Company, L.P. Surface coating composition for inkjet media
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US8795796B2 (en) 2010-07-23 2014-08-05 International Paper Company Coated printable substrates providing higher print quality and resolution at lower ink usage
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PL1951955T3 (pl) 2013-06-28
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MX358994B (es) 2018-09-11
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BRPI0619648B1 (pt) 2017-11-07
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JP2009513843A (ja) 2009-04-02
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