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EP1630289A1 - Gestrichenes Papier und Verfahren zu seiner Herstellung - Google Patents

Gestrichenes Papier und Verfahren zu seiner Herstellung Download PDF

Info

Publication number
EP1630289A1
EP1630289A1 EP05255115A EP05255115A EP1630289A1 EP 1630289 A1 EP1630289 A1 EP 1630289A1 EP 05255115 A EP05255115 A EP 05255115A EP 05255115 A EP05255115 A EP 05255115A EP 1630289 A1 EP1630289 A1 EP 1630289A1
Authority
EP
European Patent Office
Prior art keywords
paper product
per
parts
coated paper
pigment
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
EP05255115A
Other languages
English (en)
French (fr)
Other versions
EP1630289B1 (de
Inventor
James T. Brown
Ravi Mukkamala
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.)
Rohm and Haas Co
Original Assignee
Rohm and Haas Co
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 Rohm and Haas Co filed Critical Rohm and Haas Co
Publication of EP1630289A1 publication Critical patent/EP1630289A1/de
Application granted granted Critical
Publication of EP1630289B1 publication Critical patent/EP1630289B1/de
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/42—Coatings with pigments characterised by the pigments at least partly organic
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/10—Mixtures of chemical and mechanical pulp
    • 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
    • D21H19/50—Proteins
    • 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
    • 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
    • D21H21/50—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 form
    • D21H21/52—Additives of definite length or shape
    • D21H21/54—Additives of definite length or shape being spherical, e.g. microcapsules, beads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/27—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
    • Y10T428/273—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.] of coating

Definitions

  • the present invention relates to a coated paper product that allows a coated light weight, inexpensive paper product to perform favorably when compared to a heavier coated paper product while maintaining the optical, tactile, and printing properties of the heavier coated paper product. Furthermore, this invention relates to the method for producing the same coated paper product.
  • a method for preparing a coated paper product having improved properties while maintaining high bulk involves applying on a surface of a base stock at least one layer of a coating composition comprising a particulate plastic pigment; and, passing the base stock through a multi-nip calender device maintained at relatively low roll temperature and nip pressure.
  • U.S. Patent No. 6,387,213 discloses a printing paper having the appearance of uncoated paper and improved printability properties approaching those of coated papers which result from the application of 5-25 lbs. of coating per side, per ream of paper.
  • the problem addressed by the present invention is achieving good bulk and optical and printing properties while reducing the coat weight and moderating the calendering conditions in a relatively inexpensive ground-wood containing paper.
  • An aspect of this invention is a coated paper product comprising:
  • Another aspect of this invention is a method for producing a coated paper product comprising the steps of:
  • the combination of 55 to 100 parts of voided polymeric particles per total pigment particles on a dry basis, and 10 to 50 parts of starch-based and/or protein-based binder per volume of total pigment particles on a dry basis combined with the aforementioned calender conditions enables the use of a lower coat weight; and, it enables the manufacture of lightweight and ultra light weight papers which use a greater fiber to coat ratio than is typically used in coated papers.
  • Preferable coated paper product weight ranges from 24-34 lbs per ream.
  • the combination of 55 to 100 part of voided polymeric particles per total pigment particles on a dry basis, and 10 to 50 parts of starch-based and/or protein-based binder per volume of total pigment particles on a dry basis combined with the aforementioned calender conditions provides for a strong paper at a given weight, which in turn provides for better runnability/ productivity on the paper machine, as well as, in subsequent printing operations than heavier counterparts. Less compression of the lighter coated paper than conventional heavier paper and retention of bulk and stiffness are some of the additional attributes achieved by using this combination. Furthermore, the optical, tactile, and printing properties of the coated paper product may be maintained at a level comparable to coated paper products having a higher initial base weight.
  • gloss measured according to TAPPI 75° test procedure
  • opacity measured according to TAPPI test procedure T425-OM-91
  • brightness measured according to TAPPI test procedure T452-OM-92
  • voided polymeric pigment particles hereinafter particles, with a particle size ranging from approximately 0.2 to 5.0 microns, preferably 0.3 to 2.0 microns and void volumes ranging from approximately 20 to 80%, preferably 40-70%.
  • These particles have a density in the range of 0.4 - 1.0g/cc, preferably 0.4 - 0.6 g/cc.
  • these particles include a single hollow core or void, or multiple voids within each particle; the voids may be spherical or irregular in shape and the voided areas may be isolated or connected. These particles may have an appearance of being sponge-like. The surface of these particles may range from smooth and unbroken to rough and perforated.
  • Such particles are disclosed in, for example, the following patents: US 4,427,836; US 5,036,109; US 5,157,084; US 5,216,044; US 5,409,776; US 5,494,971; US 5,521,253; US 5,527,613, US 5,989,630; US 6,020,435; US 6,139,961; and US 6,673,451. Additionally, these particles may be cross-linked and charged; examples of cross-linked charged particles are disclosed in US 6,624,272.
  • polymeric pigment particles including but not limited to, solid polystyrene bead particles such as DOW711 and DOW722, both made by Dow Chemical Company (Midland, Mich.); solid polymethylmethacrylate bead particles; polymer particles with a morphology (particles comprising at least one polymer core phase containing at least one void, at least one polymer shell phase at least partially surrounding the core, and at least one channel connecting the void in the core to the exterior of the particle) and composition defined in U.S. Pat. No. 5,510,422 and European Published Patent Application No. 0 842 992 A2; and any polymer particles with a glass transition temperature greater than 40° C may be used in the present invention.
  • solid polystyrene bead particles such as DOW711 and DOW722, both made by Dow Chemical Company (Midland, Mich.); solid polymethylmethacrylate bead particles; polymer particles with a morphology (particles comprising at least one polymer core phase
  • mineral pigments may also be included in the present invention.
  • suitable mineral pigments include but are not limited to ground and precipitated calcium carbonate, kaolin, calcined kaolin, delaminated and structured kaolin clay, titanium dioxide, aluminum silicate, magnesium silicate, magnesium carbonate, amorphous silica, zinc oxide, zinc hydroxide, aluminum oxide, aluminum hydroxide, talc, satin white, barium sulfate and calcium silicate.
  • Suitable starch-based and protein-based polymeric binders of the present invention include but are not limited to, caseins, starch and wheat flours, gelatin and alginates, cellulose, hydroxyethylcellulose, methylcellulose, and carboxymethylcellulose as modified natural products, dextrins, ethylated starch (including ethylated corn starch), lignin, and the like.
  • Starches which are obtainable by reacting natural, cationic, anionic and/or amphoteric starch with synthetic cationic polymers are used as dry strength agents.
  • the natural starches used may be, for example, corn starch, potato starch, wheat starch, rice starch, tapioca starch, sago starch, sorghum starch, cassava starch, pea starch, rye starch or mixtures of the stated natural starches.
  • Other suitable starches are ryemeal and other meals.
  • Protein-containing starches from rye, wheat and leguminous plants are also suitable.
  • Those natural starches which have an amylopectin content of at least 95% by weight are also suitable for the cationic modification with polymers. Starches containing at least 99% by weight of amylopectin are preferred.
  • Such starches can be obtained, for example, by starch fractionation of conventional natural starches or by cultivation measures from plants which produce virtually pure amylopectin starch.
  • Starches having an amylopectin content of at least 95, preferably at least 99%, by weight, are commercially available. They are offered, for example, as waxy corn starch, waxy potato starch or waxy wheat starch.
  • the natural starches can be modified either alone or as a mixture with cationic polymers.
  • Synthetic polymeric binders are included within the present invention from about 0 to 25 parts of synthetic binder per 100 parts of total pigment on a dry basis, preferably 5 to 25 parts of synthetic binder per 100 parts of total pigment on a dry basis.
  • Suitable synthetic polymeric binders of the present invention include but are not limited to, homopolymers, copolymers or terpolymers such as acrylic and/or methacrylic polymers, polyvinyl acetate, polyvinyl alcohol, styrene-acrylic copolymers, styrene-butadiene copolymers, vinyl acetate-acrylic copolymers, ethylene-vinyl acetate copolymers, vinyl acetate-vinyl versatate copolymers, vinyl acetate-vinyl maleate copolymers, vinyl acetate-vinyl chloride-acrylic terpolymers, ethylene-vinyl acetate-acrylic terpolymers, polyurethane, polyvinyl
  • the polymers or prepolymers may optionally contain up to about 10% by weight of a functional monomer, for example, but not limited to, carboxylic acid, phosphate, sulfate, sulfonate, and amide monomers and combinations thereof, non-functional monomers, and mixtures thereof.
  • a functional monomer for example, but not limited to, carboxylic acid, phosphate, sulfate, sulfonate, and amide monomers and combinations thereof, non-functional monomers, and mixtures thereof.
  • the polymeric binders are preferably water-borne latex polymers.
  • the synthetic polymeric binders include styrene-acrylate, styrene-butadiene, styrene-butadiene-acrylonitrile, vinyl-acetate, and vinyl-acrylate.
  • the coating of the present invention contains water in an amount greater than 60% of the total weight of the coating composition. Amounts of water less than 60% may achieve comparable results.
  • the coating of the present invention may additionally include minor amounts, i.e., less than about 20% by weight, based on the total weight of the coating composition of conventional adhesive additives such as crosslinkers, slip agents, thickeners, bases, optical brighteners, defoamers, dispersing resins, mildewcides, biocides, opacifying pigments, extender pigments, and colorants. These optional ingredients may be added separately or added to the premixes.
  • conventional adhesive additives such as crosslinkers, slip agents, thickeners, bases, optical brighteners, defoamers, dispersing resins, mildewcides, biocides, opacifying pigments, extender pigments, and colorants.
  • the method of the current invention involves coating the base stock by applying the aforementioned coating with a coater and then subsequently drying the coated paper such that 1 to 3 lbs per ream per side, preferably 1.0- 2.5 lbs per ream per side of the dried coating composition remains on the coated paper product.
  • Suitable coaters include but are not limited to short dwell, roller applicator, jet, metered size press, spray, curtain, and rod.
  • the coater is a short dwell trailing blade coater having a blade of 0.457 mm/45°.
  • the coater is a jet coater.
  • Suitable drying methods include, but are not limited to, infrared, air-flow, and air-caps or a combination thereof.
  • the coated paper is dried using IR and hot-air dryers to a moisten target of 5%.
  • the coated paper is then calendered to produce the gloss and smoothness that is required for the final paper product.
  • the calender intensity is lowered by reducing the number of nips, resulting in a bulkier sheet. Maintaining the number of rolls and nips while lowering the temperature and pressure has the same effect of producing a bulkier sheet.
  • the coated paper web may be calendered on both sides by either two on-line soft nip calenders arranged in series or by using an offline multi-nip super-calender stack to achieve a target gloss of 50-55.
  • Other suitable calenders include, but are not limited to, Jamis, Optiload, extended nip and Shoe used either on-line or off-line.
  • the calendering devices of the present invention are comprised of a series of nips and rolls.
  • the nips are present in quantity in a range of one to eleven.
  • the rolls are present in a quantity in a range of two to twelve.
  • the calendering conditions of the present invention are milder than those typically used for lightweight coated papers.
  • the light weight coated paper product is calendered on both sides simultaneously by two on-line soft-nip calenders arranged in series to achieve a target gloss of 50-55.
  • the soft nip calender rolls are heated to 70-200°C and a pressure load of 100-350 kN/m at each nip is applied to obtain the target gloss.
  • the low weight coated paper product is calendered on an offline super-calender using at least 3 nips but no greater than 5 nips at a speed of 500m/min and a temperature from 50-150°C. No pressure is added other than the gravitational load of the rolls.
  • the paper coatings were made and applied at a pilot coater facility.
  • the base stock used in the examples was a ground wood containing paper with a basis weight of 24 lbs/3300 sq. ft. This base stock was coated on two sides (one side at a time) using a short-dwell (blade: 0.457mm/45°) coater at a coating speed of ca. 4000 ft/min. and dried using IR and hot-air dryers to a moisture target of 5%.
  • Example 1 was a control coated paper product having a coating that contains no voided polymeric pigment particles per total pigment volume.
  • the coating was applied to the base stock, a 24 lb ground wood-containing base stock, using a short-dwell (blade coater) at a coating speed of 4000 ft/min, one side at a time, such that the coat weight, as measured by an in-line beta gauge, was 5.5 lbs/ream/side.
  • half of the paper web was passed through two in-line soft-nip calender rolls, each set maintained at 170 deg C with nip loads of 350 kN/m, such that a sheet gloss of about 52-53 resulted (measured by in-line gloss meter).
  • the remaining coated, but uncalendered, half roll was passed through 5 nips of an off-line supercalender stack maintained at 80 deg C with an applied nip load of 150 PSI to obtain sheet gloss of about 51-52 (measured by in-line gloss meter). Soft-nip calendering results are displayed within the table.
  • Examples 2-7 were paper products having a coating that contains between 55 and 100 parts of voided polymeric particles per total pigment volume.
  • the coating was applied, as aforementioned, to the base stock using a short-dwell (blade coater) at a coating speed of 4000 ft/min, one side at a time, however, the coat weight of Examples 2-7, measured by an in-line beta gauge, was 2.0 lbs/ream/side.
  • half of the paper web was passed through two in-line soft-nip calender rolls, each set maintained at 90 deg C with nip loads of 125 and 300 kN/m, such that a sheet gloss of about 50-65 was achieved (measured by in-line gloss meter).
  • Clay 25 TiO2 3 Hollow plastic pigment (AF-1055) 55 75 75 75 100 Hollow plastic pigment (AF-1353) 75 Starch (PG 280/270) 7 17.6 24 24 24 36 32 Synthetic Latex Binder (GenFlo® 5128) 9 12.1 16.5 16.5 16.5 16.5 22 Optical Brightner (Blancafor P) 1 1 1 1 1 1 1 1 Crosslinker (Sequerez 755) 0.28 0.7 0.96 0.96 0.96 1.44 1.28 Lubricant (Sunkote 455) 1 1 1 1 1 1 1 1 1 Total Target Coat Weight (lbs/3300 sq.

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  • Paper (AREA)
EP05255115A 2004-08-27 2005-08-18 Gestrichenes Papier und Verfahren zu seiner Herstellung Ceased EP1630289B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60496804P 2004-08-27 2004-08-27

Publications (2)

Publication Number Publication Date
EP1630289A1 true EP1630289A1 (de) 2006-03-01
EP1630289B1 EP1630289B1 (de) 2009-05-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05255115A Ceased EP1630289B1 (de) 2004-08-27 2005-08-18 Gestrichenes Papier und Verfahren zu seiner Herstellung

Country Status (5)

Country Link
US (1) US20060042768A1 (de)
EP (1) EP1630289B1 (de)
JP (1) JP2006063509A (de)
CN (1) CN100593049C (de)
DE (1) DE602005014424D1 (de)

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EP1911881A1 (de) * 2006-10-03 2008-04-16 Rohm and Haas Company Mit einem hohlen organischen Pigmentkernbinder beschichtete Papier- und Pappartikel sowie Herstellungsverfahren dafür
WO2008156519A1 (en) * 2007-06-18 2008-12-24 Dow Global Technologies, Inc Paper coating compositions, coated papers, and methods
US8236431B2 (en) 2006-10-03 2012-08-07 Rohm And Haas Company Hollow organic pigment core binder coated paper and paperboard articles and methods for making the same
EP4575088A1 (de) * 2023-12-20 2025-06-25 Billerud Aktiebolag (publ) Herstellung von papier mit hoher dichte

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WO2004025026A1 (en) 2002-09-13 2004-03-25 International Paper Company Paper with improved stiffness and bulk and method for making same
US8992454B2 (en) * 2004-06-09 2015-03-31 Bard Access Systems, Inc. Splitable tip catheter with bioresorbable adhesive
JP5302670B2 (ja) 2005-03-11 2013-10-02 インターナショナル・ペーパー・カンパニー 膨張可能な微小球体とイオン性化合物とを含有する組成物、およびこれらの組成物の製造法と使用法
CA2547276A1 (en) * 2006-05-19 2007-11-19 Abitibi-Consolidated Inc. Coated mechanical pulp paper
EP1923504A1 (de) 2006-11-20 2008-05-21 Rohm and Haas France SAS Beschichtete Papier und Pappe
JP4976878B2 (ja) * 2007-02-20 2012-07-18 大王製紙株式会社 印刷用塗工紙及びその製造方法
WO2010025383A1 (en) 2008-08-28 2010-03-04 International Paper Company Expandable microspheres and methods of making and using the same
US9157187B2 (en) 2009-12-21 2015-10-13 Ecosynthetix Ltd. Methods of using biobased latex binders for improved printing performance
US8449665B2 (en) * 2010-01-08 2013-05-28 Hewlett-Packard Development Company, L.P. Coating compositions including starch nanoparticles
US8608908B2 (en) 2010-04-02 2013-12-17 International Paper Company Method and system using low fatty acid starches in paper sizing composition to inhibit deposition of multivalent fatty acid salts
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US9616696B2 (en) * 2013-10-23 2017-04-11 Ecosynthetix Inc. Coating for paper adapted for inkjet printing
CN105113333A (zh) * 2015-08-13 2015-12-02 合肥龙发包装有限公司 一种具有高结合度的液体包装原纸
BR102016027010B1 (pt) * 2015-12-04 2022-04-05 Dow Global Technologies Llc Composição de revestimento de papel
EP4077805B1 (de) * 2019-12-17 2025-11-19 WestRock MWV, LLC Beschichtete papier- und kartonstrukturen

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Cited By (9)

* Cited by examiner, † Cited by third party
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EP1911881A1 (de) * 2006-10-03 2008-04-16 Rohm and Haas Company Mit einem hohlen organischen Pigmentkernbinder beschichtete Papier- und Pappartikel sowie Herstellungsverfahren dafür
US8236431B2 (en) 2006-10-03 2012-08-07 Rohm And Haas Company Hollow organic pigment core binder coated paper and paperboard articles and methods for making the same
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CN102677538A (zh) * 2007-06-18 2012-09-19 欧美诺华解决方案公司 纸涂布组合物、涂布纸和方法
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EP4575088A1 (de) * 2023-12-20 2025-06-25 Billerud Aktiebolag (publ) Herstellung von papier mit hoher dichte
WO2025132278A1 (en) * 2023-12-20 2025-06-26 Billerud Aktiebolag (Publ) High density paper production

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JP2006063509A (ja) 2006-03-09
DE602005014424D1 (de) 2009-06-25
EP1630289B1 (de) 2009-05-13
US20060042768A1 (en) 2006-03-02
CN100593049C (zh) 2010-03-03

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