WO2015110979A1 - Method of decreasing the dusting tendency of printing paper - Google Patents

Method of decreasing the dusting tendency of printing paper Download PDF

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Publication number
WO2015110979A1
WO2015110979A1 PCT/IB2015/050487 IB2015050487W WO2015110979A1 WO 2015110979 A1 WO2015110979 A1 WO 2015110979A1 IB 2015050487 W IB2015050487 W IB 2015050487W WO 2015110979 A1 WO2015110979 A1 WO 2015110979A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
printing
sizing composition
calcium carbonate
dusting
Prior art date
Application number
PCT/IB2015/050487
Other languages
French (fr)
Inventor
Philip HÅKANSSON
Original Assignee
Stora Enso Oyj
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 Stora Enso Oyj filed Critical Stora Enso Oyj
Publication of WO2015110979A1 publication Critical patent/WO2015110979A1/en

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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
    • 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
    • D21H17/29—Starch cationic
    • 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
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • 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
    • D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
    • D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
    • 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
    • D21H19/10—Coatings without pigments
    • D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline 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
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates
    • 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
    • D21H19/54—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
    • 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

Definitions

  • the invention relates to a method of decreasing the dusting tendency of printing paper.
  • Surface sizing compositions mainly consists of modified starches or other hydrocolloids or surface sizing agents.
  • Inkjet printing puts high demands on a printing paper, since the ink must be quickly dried on the substrate and yet provide a high print quality with, e.g. a high optical print density, minimized feathering and bleeding and low strike-through.
  • multivalent salts such as calcium chloride
  • US6207258 discloses a composition useful for surface treating a sheet substrate for inkjet printing, the composition comprising a salt of a divalent metal.
  • a problem connected to printing of uncoated paper is dusting, i.e. the tendency of a paper surface to shed loose and weakly bonded particles, which may accumulate on the printing machinery.
  • Said weakly bonded particles mostly comprise different forms of calcium carbonate originating from fillers, such as precipitated calcium carbonate (PCC) , chalk and ground calcium carbonate (GCC) , present in the base-paper .
  • PCC precipitated calcium carbonate
  • GCC ground calcium carbonate
  • One object of the present invention is to decrease the dusting tendency of printing paper.
  • the invention relates to a method of reducing the dusting tendency of printing paper, preferably of uncoated printing paper.
  • the method of the invention comprises the steps of; providing a base paper comprising filler in an amount of at least 20 weight%, which filler comprises calcium carbonate and applying a sizing composition to the surface of said base paper, wherein the pH of said sizing composition has been adjusted to between 4 and 6.
  • the filler in said base paper may comprise calcium carbonate in the form of e.g. precipitated calcium carbonate (PCC) , ground calcium carbonate (GCC) and/or chalk.
  • the calcium salt formed at the surface of the paper enhances the printing properties of the produced paper.
  • a pH adjusted to between 4 and 6 gives rise to an effective reduction of calcium carbonate at the surface of the paper and in the surface size circulation. Since it is only the calcium carbonate located at the surface that is to be reduced, the pH should not be lowered to below 4. Moreover, at pH below 4, also problems with corrosion may occur .
  • the pH of the sizing composition may be adjusted by the addition of an acidic media.
  • the acidic media may be selected from the group consisting of mineral acid and/or organic acids, and/or metal salts.
  • the acidic media may, e.g. comprise hydrochloride acid, a metal salt, citric acid, sulfomic acid, alum, sulfuric acid, acetic acid, phosphoric acid, sodium dihydrogen phosphate, malic acid, tartaric acid, adipic acid and/or succinic acid.
  • the acidic media comprises a salt of a multivalent metal, such as a divalent or trivalent metal, e.g.
  • the sizing composition may comprise starch.
  • the sizing composition comprises starch to an amount of 8 - 15 % dry weight.
  • the sizing composition comprises starch to an amount of 8 - 15 % dry weight.
  • composition comprises cationic starch.
  • a decrease of pH of a sizing composition comprising cationic starch renders the starch, especially tertiary amino type starch, even more cationic active whereby the ability of the starch to bind to the fibers improves. In this way, release of starch is avoided at the recycling of broke, whereby slime formation is reduced.
  • the method of the invention may be used to reduce dusting of all kinds of printing papers, e.g. paper suitable for printing by use of laser, inkjet, offset and or gravure .
  • the printing paper is suitable for inkjet or rotogravure printing.
  • a conventional cationic surface size starch based on corn with the trade name Meribond 164 supplied by Tate & Lyle with a degree of substitution of 0,014, was cooked with a jet cooker.
  • the starch solution with a pH of 7,5 was diluted to a concentration of 12 %.
  • 12 g per litre/solution sulphanilic agent (OBA) was added.
  • Ref. sizing composition A first part of said starch solution was used as reference (hereinafter: Ref. sizing composition), which Ref. sizing composition had a pH of 7,5.
  • the pH of a second part of said solution (hereinafter sizing composition 1) was decreased to 4,5 by the addition of 7 ml citronic acid with a concentration of 10%, per litre of the starch/OBA
  • composition 2 (hereinafter sizing composition 2) was decreased to 4,5 by the addition of 10 ml sulfomic acid with a concentration of 10%, per litre of the starch/OBA mixture.
  • the base-paper used in the test is made from chemical pulp and the ratio of softwood pulp to hardwood pulp is 50/50. It comprises 25 % of precipitated calcium carbonate with a scalenohedral crystal form. Furthermore, 1 % cationic starch, 0,5 % OBA, 0,15 % alkyl succinic anhydride, is added.
  • the retention system used is Compozil® from
  • the surface sized samples (Ref Sample, Sample 1 and Sample 2) were thereafter printed in an inkjet printer. Visual comparisons showed that the printing of the Ref Sampled gave rise to problems with dusting particles accumulating on the printing blanket. The printing of Samples 1 and 2 did not give rise to any accumulation on the blanket.
  • the treatment of a printing paper in accordance with the invention remarkably reduces the dusting tendency when the paper is printed by use of e.g. inkjet printing techniques.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Abstract

The invention relates to a method of reducing the dusting tendency of printing paper, preferably of uncoated printing paper to be used in inkjet printing. The method of the invention comprises the steps of: providing a base paper comprising fillers and applying a sizing composition to the surface of said base paper, wherein the pH of said sizing composition has been adjusted to between 4 and 6. The fillers in said base paper comprises calcium carbonate in the form of e.g. precipitated calcium carbonate (PCC), ground calcium carbonate (GCC) and/or chalk. It has been shown that when the pH of a surface sizing composition is reduced, a calcium salt is formed and the amount of calcium carbonate at the surface of the paper is reduced, whereby problems with dusting are avoided. Moreover, the calcium salt formed at the surface of the paper enhances the printing properties of the produced paper.

Description

METHOD OF DECREASING THE DUSTING TENDENCY OF PRINTING PAPER Field of the invention
The invention relates to a method of decreasing the dusting tendency of printing paper.
Background
The predominant part of all paper and paperboard that is to be used in laser printers, inkjet printers and other different printing methods such as offset printing and flexoprinting, is surface treated with a surface sizing composition in order to improve printability as well as other properties of the paper or paperboard. Surface sizing compositions mainly consists of modified starches or other hydrocolloids or surface sizing agents.
Inkjet printing puts high demands on a printing paper, since the ink must be quickly dried on the substrate and yet provide a high print quality with, e.g. a high optical print density, minimized feathering and bleeding and low strike-through. In recent years it has been found that when multivalent salts, such as calcium chloride, are added to the surface size, the applied ink will precipitate fast on the surface of the paper and give rise to a significant improvement in print quality. This is especially
advantageous in inkjet printing. US6207258 discloses a composition useful for surface treating a sheet substrate for inkjet printing, the composition comprising a salt of a divalent metal. One problem connected to printing of uncoated paper is dusting, i.e. the tendency of a paper surface to shed loose and weakly bonded particles, which may accumulate on the printing machinery. Said weakly bonded particles mostly comprise different forms of calcium carbonate originating from fillers, such as precipitated calcium carbonate (PCC) , chalk and ground calcium carbonate (GCC) , present in the base-paper .
In the art, attempts to reduce the dusting tendency of paper have been done by increasing the bonding within the paper. However, in recent years, tougher demands on keeping down production costs have increased the use of fillers in printing paper manufacturing. At higher filler contents, the bonding within the paper is weakened whereby the dusting tendency increases.
Description of the invention
One object of the present invention is to decrease the dusting tendency of printing paper.
This object, as well as other advantages, can be achieved by the method of the invention. The invention relates to a method of reducing the dusting tendency of printing paper, preferably of uncoated printing paper. The method of the invention comprises the steps of; providing a base paper comprising filler in an amount of at least 20 weight%, which filler comprises calcium carbonate and applying a sizing composition to the surface of said base paper, wherein the pH of said sizing composition has been adjusted to between 4 and 6. The filler in said base paper may comprise calcium carbonate in the form of e.g. precipitated calcium carbonate (PCC) , ground calcium carbonate (GCC) and/or chalk.
It has been shown that by adjusting the pH of the surface sizing composition to between 4 and 6, a calcium salt is formed from the filler located on the surface of the paper and the amount of calcium carbonate at the surface is reduced, whereby problems with dusting are avoided.
Moreover, the calcium salt formed at the surface of the paper enhances the printing properties of the produced paper. A pH adjusted to between 4 and 6 gives rise to an effective reduction of calcium carbonate at the surface of the paper and in the surface size circulation. Since it is only the calcium carbonate located at the surface that is to be reduced, the pH should not be lowered to below 4. Moreover, at pH below 4, also problems with corrosion may occur .
The pH of the sizing composition may be adjusted by the addition of an acidic media. The acidic media may be selected from the group consisting of mineral acid and/or organic acids, and/or metal salts. The acidic media may, e.g. comprise hydrochloride acid, a metal salt, citric acid, sulfomic acid, alum, sulfuric acid, acetic acid, phosphoric acid, sodium dihydrogen phosphate, malic acid, tartaric acid, adipic acid and/or succinic acid. In one mode, the acidic media comprises a salt of a multivalent metal, such as a divalent or trivalent metal, e.g.
magnesium acetate. When an acidic salt comprising
multivalent ions is added to the surface sizing
composition, not only a reduced dusting tendency is achieved, but at the same time the print quality is improved .
The sizing composition may comprise starch. Preferably, the sizing composition comprises starch to an amount of 8 - 15 % dry weight. In one preferred mode, the sizing
composition comprises cationic starch. A decrease of pH of a sizing composition comprising cationic starch, renders the starch, especially tertiary amino type starch, even more cationic active whereby the ability of the starch to bind to the fibers improves. In this way, release of starch is avoided at the recycling of broke, whereby slime formation is reduced.
The method of the invention may be used to reduce dusting of all kinds of printing papers, e.g. paper suitable for printing by use of laser, inkjet, offset and or gravure . Preferably, the printing paper is suitable for inkjet or rotogravure printing.
Detailed description of a preferred embodiment
The invention is further described below by way of an example, wherein the dusting tendency of a paper according to the invention is compared with a paper surface sized with a conventional starch solution.
A conventional cationic surface size starch, based on corn with the trade name Meribond 164 supplied by Tate & Lyle with a degree of substitution of 0,014, was cooked with a jet cooker. The starch solution, with a pH of 7,5 was diluted to a concentration of 12 %. To this solution, 12 g per litre/solution sulphanilic agent (OBA) was added.
A first part of said starch solution was used as reference (hereinafter: Ref. sizing composition), which Ref. sizing composition had a pH of 7,5. The pH of a second part of said solution (hereinafter sizing composition 1) was decreased to 4,5 by the addition of 7 ml citronic acid with a concentration of 10%, per litre of the starch/OBA
mixture. The pH of a third part of said solution
(hereinafter sizing composition 2) was decreased to 4,5 by the addition of 10 ml sulfomic acid with a concentration of 10%, per litre of the starch/OBA mixture.
The base-paper used in the test is made from chemical pulp and the ratio of softwood pulp to hardwood pulp is 50/50. It comprises 25 % of precipitated calcium carbonate with a scalenohedral crystal form. Furthermore, 1 % cationic starch, 0,5 % OBA, 0,15 % alkyl succinic anhydride, is added. The retention system used is Compozil® from
AkzoNobel Corporate.
One sample (Ref. Sample) of said base paper was surface sized with the Ref. sizing composition, while two samples (Sample 1 and Sample 2) were surface sized with sizing composition 1 and 2 respectively. All samples were
surface-sized in a Sym Sizer® device supplied by Metso Corperation on both the bottom and the top side of the paper with the surface sizing compositions to an amount of 1 , 3 g/m2.
The surface sized samples (Ref Sample, Sample 1 and Sample 2) were thereafter printed in an inkjet printer. Visual comparisons showed that the printing of the Ref Sampled gave rise to problems with dusting particles accumulating on the printing blanket. The printing of Samples 1 and 2 did not give rise to any accumulation on the blanket. Thus, the treatment of a printing paper in accordance with the invention remarkably reduces the dusting tendency when the paper is printed by use of e.g. inkjet printing techniques.
While specific embodiments and examples of the products and methods of the invention have been shown and described, it will be appreciated by those skilled in the art that changes and modifications may be made thereto without departing from the invention in its broader aspects and as set forth in the following claims.

Claims

Patent claims
1. A method of decreasing the dusting tendency of
printing paper comprising the steps of;
- providing a base paper comprising filler in an
amount of at least 20 weight%, which filler comprises calcium carbonate;
- applying a sizing composition to the surface of
said base paper, wherein the pH of said sizing composition has been adjusted to between 4 and 6.
2. A method according to claim 1, wherein the pH of said sizing composition has been adjusted by the addition of an acidic media
3. A method according to any one of claims 1 - 2, wherein said acidic media comprises a salt of a multivalent metal .
4. A method according to any one of claims 1 - 3, wherein the sizing composition comprises starch.
5. A method according to any one of claims 1 - 4, wherein the sizing composition comprises cationic starch.
6. A method according to any one of claims 1 - 5, wherein the printing paper is suitable for ink-jet printing or rotogravure printing.
PCT/IB2015/050487 2014-01-22 2015-01-22 Method of decreasing the dusting tendency of printing paper WO2015110979A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1400028A SE1400028A1 (en) 2014-01-22 2014-01-22 Method for reducing the tendency of dusting of printing paper
SE1400028-5 2014-01-22

Publications (1)

Publication Number Publication Date
WO2015110979A1 true WO2015110979A1 (en) 2015-07-30

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105332316A (en) * 2015-10-22 2016-02-17 山东万豪纸业集团股份有限公司 Method for producing artistic paperboard by taking commercial wood pulp as raw material
CN106087558A (en) * 2015-09-18 2016-11-09 内蒙古东盛硅藻土科技创新产业园有限公司 A kind of diatom soil type sizing composition for improving press quality and application thereof
EP3294562A4 (en) * 2015-10-02 2018-05-23 Hewlett-Packard Development Company, L.P. Sizing compositions
WO2018116150A1 (en) * 2016-12-21 2018-06-28 Stora Enso Oyj A process for surface sizing using a jet cooked dispersion comprising microfibrillated cellulose, starch and pigment and/or filler

Citations (10)

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DD211819A1 (en) * 1982-11-26 1984-07-25 Wtz Der Zellstoff U Papierindu METHOD FOR SURFACE PAPER LUBRICATION
US4777224A (en) * 1986-11-28 1988-10-11 Akzo Nv Anionic polyurethanes
US5062922A (en) * 1987-12-24 1991-11-05 Arakawa Kagaku Kogyo Kabushiki Kaisha Sizing paper with α-hydroxycarboxylic acid
US5460645A (en) * 1993-01-28 1995-10-24 Pandian; Verson E. Use of zirconium salts to improve the surface sizing efficiency in paper making
US5472485A (en) * 1993-01-28 1995-12-05 Hopton Technologies, Inc. Use of zirconium salts to improve the surface sizing efficiency in paper making
JP3394384B2 (en) * 1996-03-26 2003-04-07 三菱製紙株式会社 Method for producing label base paper that can be peeled off during alkali washing
US20090017235A1 (en) * 2007-07-13 2009-01-15 Georgia-Pacific Consumer Products Lp Dual Mode Ink Jet Paper
WO2010044795A1 (en) * 2008-10-16 2010-04-22 Hewlett-Packard Development Company, L.P. Composition and print medium
WO2011123214A1 (en) * 2010-04-02 2011-10-06 International Paper Company Method and system using low fatty acid starches in paper sizing composition to inhibit deposition of multivalent fatty acid salts
WO2013115809A1 (en) * 2012-01-31 2013-08-08 Hewlett-Packard Development Company, L.P. Surface treatment composition

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DD211819A1 (en) * 1982-11-26 1984-07-25 Wtz Der Zellstoff U Papierindu METHOD FOR SURFACE PAPER LUBRICATION
US4777224A (en) * 1986-11-28 1988-10-11 Akzo Nv Anionic polyurethanes
US5062922A (en) * 1987-12-24 1991-11-05 Arakawa Kagaku Kogyo Kabushiki Kaisha Sizing paper with α-hydroxycarboxylic acid
US5460645A (en) * 1993-01-28 1995-10-24 Pandian; Verson E. Use of zirconium salts to improve the surface sizing efficiency in paper making
US5472485A (en) * 1993-01-28 1995-12-05 Hopton Technologies, Inc. Use of zirconium salts to improve the surface sizing efficiency in paper making
JP3394384B2 (en) * 1996-03-26 2003-04-07 三菱製紙株式会社 Method for producing label base paper that can be peeled off during alkali washing
US20090017235A1 (en) * 2007-07-13 2009-01-15 Georgia-Pacific Consumer Products Lp Dual Mode Ink Jet Paper
WO2010044795A1 (en) * 2008-10-16 2010-04-22 Hewlett-Packard Development Company, L.P. Composition and print medium
WO2011123214A1 (en) * 2010-04-02 2011-10-06 International Paper Company Method and system using low fatty acid starches in paper sizing composition to inhibit deposition of multivalent fatty acid salts
WO2013115809A1 (en) * 2012-01-31 2013-08-08 Hewlett-Packard Development Company, L.P. Surface treatment composition

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106087558A (en) * 2015-09-18 2016-11-09 内蒙古东盛硅藻土科技创新产业园有限公司 A kind of diatom soil type sizing composition for improving press quality and application thereof
CN106087558B (en) * 2015-09-18 2018-03-30 内蒙古东盛硅藻土科技创新产业园有限公司 A kind of diatom soil type sizing composition and its application for being used to improve press quality
EP3294562A4 (en) * 2015-10-02 2018-05-23 Hewlett-Packard Development Company, L.P. Sizing compositions
US10550519B2 (en) 2015-10-02 2020-02-04 Hewlett-Packard Development Company, L.P. Sizing compositions
CN105332316A (en) * 2015-10-22 2016-02-17 山东万豪纸业集团股份有限公司 Method for producing artistic paperboard by taking commercial wood pulp as raw material
WO2018116150A1 (en) * 2016-12-21 2018-06-28 Stora Enso Oyj A process for surface sizing using a jet cooked dispersion comprising microfibrillated cellulose, starch and pigment and/or filler
US11453978B2 (en) 2016-12-21 2022-09-27 Stora Enso Oyj Process for surface sizing using a jet cooked dispersion comprising microfibrillated cellulose, starch and pigment and/or filler

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