US20120241114A1 - Process for production of a paper or paperboard product - Google Patents

Process for production of a paper or paperboard product Download PDF

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Publication number
US20120241114A1
US20120241114A1 US13/513,410 US201013513410A US2012241114A1 US 20120241114 A1 US20120241114 A1 US 20120241114A1 US 201013513410 A US201013513410 A US 201013513410A US 2012241114 A1 US2012241114 A1 US 2012241114A1
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US
United States
Prior art keywords
starch
furnish
mfc
product
paper
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.)
Abandoned
Application number
US13/513,410
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English (en)
Inventor
Lars Axrup
Isto Heiskanen
Mika Riikonen
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.)
Stora Enso Oyj
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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
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Application filed by Stora Enso Oyj filed Critical Stora Enso Oyj
Assigned to STORA ENSO OYJ reassignment STORA ENSO OYJ ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AXRUP, LARS, HEISKANEN, ISTO, RIIKONEN, MIKA
Publication of US20120241114A1 publication Critical patent/US20120241114A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/25—Cellulose
    • 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
    • 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
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/18—Highly hydrated, swollen or fibrillatable fibres
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply

Definitions

  • the present invention relates to a process for production of a paper or paperboard product comprising a furnish which comprises starch and microfibrillated cellulose.
  • fillers also improve the opacity and printability properties of the product.
  • large amount of fillers in the product decreases the strength.
  • the predominant treatment for improving paper or paperboard strength has so far been to add a strength agent, preferably cationic starch, to the furnish prior to the sheet forming operation.
  • a strength agent preferably cationic starch
  • Cationic starch molecules added to the furnish can adhere to the naturally anionic pulp fibers by electrostatic attraction and thus be retained in the wet fiber mat and remain in the final paper or paperboard.
  • cationic starch molecules tend to saturate the anionic charge on the cellulose fibers, thus setting a limit to the amount of cationic starch which can be added to the slurry. If an excess of cationic starch is added, only a portion of the starch added will be retained in the sheet, and the rest will circulate in the paper or board machine white water system.
  • a second problem is that fibers which are made cationic by excessive cationic starch addition will not be able to adsorb other cationic additives which are commonly added to the pulp slurry, such as sizing agents and retention aids.
  • high amounts of starch often cause problems with runnability, microbiology and foaming during the production process.
  • microfibrillated cellulose to a paper or board will increase the strength of the product, probably due to the improved fiber bonding.
  • the present invention relates to a process for producing a paper or paperboard product which process comprises the steps of; providing a furnish comprising fibers, adding starch to the furnish, adding microfibrillated cellulose to the furnish and conducting the furnish to a wire in order to form a web, wherein the starch and microfibrillated cellulose is added separately to the furnish. It has been shown that a product comprising both starch and microfibrillated cellulose (MFC) increases the strength of the product since the amount of starch can be increased without increasing the density of the paper or paperboard product.
  • MFC microfibrillated cellulose
  • the furnish comprises 2-15% by weight of starch and 1-15% by weight of microfibrillated cellulose.
  • the amount of starch respectively MFC of the product depends on the end use and the corresponded desired properties of the product. High amounts of starch will increase the strength of the product and it has been shown that the combination of MFC and starch makes it possible for the product to retain larger amounts of starch.
  • the web being formed by said furnish comprising starch and microfibrillated cellulose preferably forms a layer of the paper or paperboard product.
  • the paper or paperboard product is preferably a multilayer product which comprises at least two layers. It may be preferred that the product comprises at least three layers and that the layer located in the middle of the product comprises furnish comprising starch and microfibrillated cellulose, i.e. the web being formed by the furnish that comprises starch and MFC, forms a middle layer of the paper or paperboard.
  • the invention relates to a process for production of a paper or paperboard product comprising a furnish which comprises starch and microfibrillated cellulose.
  • the furnish comprises starch in an amount of 2-15% by weight, preferably between 3-5% by weight. Consequently, the product thus comprises starch of an amount of 2-15% by weight, preferably between 3-5% by weight.
  • the furnish preferably comprises cellulosic fibers.
  • the cellulosic fibers may be hardwood and/or softwood fibers.
  • the cellulosic fibers may be mechanically, chemimechanically and/or chemically treated.
  • the fibers may also be bleached or unbleached.
  • Microfibrillated cellulose (also known as nanocellulose) is a material made from wood cellulose fibers, where the individual microfibrils have been partly or totally detached from each other. MFC is normally very thin ( ⁇ 20 nm) and the length is often between 100 nm to 10 ⁇ m. However, the microfibrils may also be longer, for example between 10-100 ⁇ m but lengths up to 200 ⁇ m can also be used. Fibers that has been fibrillated and which have microfibrils on the surface and microfibrils that are separated and located in a water phase of a slurry are included in the definition MFC.
  • MFC can be produced in a number of different ways. It is possible to mechanically treat cellulosic fibers so that microfibrils are formed. The production of nanocellulose or microfibrillated cellulose with bacteria is another option. It is also possible to produce microfibrils from cellulose by the aid of different chemicals and/or enzymes which will break or dissolve the fibers.
  • MFC One example of production of MFC is shown in WO2007091942 which describes production of MFC by the aid of refining in combination with addition of an enzyme.
  • microfibrillated cellulose it is also possible to modify the microfibrillated cellulose before addition to the furnish. In this way it is possible to change its interaction and affinity to other substances. For example, by introducing more anionic charges to MFC the stability of the fibril and fibril aggregates of the MFC are increased. How the modification of the microfibrillated fibers is done depends, for example on the other components present in the furnish.
  • the furnish comprises 2-15% by weight of starch, preferably between 3-5% by weight, and it is preferred that the furnish further comprises MFC in an amount of 1-15% by weight.
  • the chosen amount of starch respectively MFC added to the furnish depends on the final product produced and the desired properties of the product. Higher amounts of starch will increase the strength of the product. However, it is not possible to increase the amount of starch too much since other problems then may occur. Also, the amount of MFC must be regulated based on the amount of starch and of course also on the end use of the product. Too high amounts of MFC may cause dewatering problems since MFC is a very fine material which easily absorbs water and increased content will make it more difficult to dewater the product.
  • the paper or paperboard product is preferably a multilayer product comprising at least two layers. It may be preferred that the product comprises at least three layers and that the layer located in the middle of the product comprises furnish comprising starch and microfibrillated cellulose. However, it is also possible that at least one outer layer of the product or even all layers of the product comprises furnish comprising starch and MFC. For some products it might be advantageous that at least one of the outer layers comprises furnish comprising starch and MFC. In this way it is possible to increase the strength and/or the bulk of this layer. Consequently, depending on the end use of the product, it is decided which and how many of the layers that will comprise furnish comprising starch and MFC.
  • the entire furnish in a layer of the paper or paperboard product comprises starch and MFC, but it is preferred that the starch and MFC is added to the majority of the furnish of the layer.
  • the layer may also comprise other components, such as broke pulp which does not comprise starch and MFC.
  • the furnish may also contain various amounts of fillers to increase for example runnability and cost-efficiency of the process and the produced substrate.
  • Other commonly used additives used in the production of paper or paperboard can also be added.
  • the paperboard product is preferably a high quality paperboard product, such a liquid packaging board, graphical board or food service board.
  • the paper product is preferably a high quality paper, such as copy paper of grades A or B, graphical papers, LWC, SC or news paper for high speed printing machines.
  • the process for producing a paper or paperboard product which process comprises the steps of providing a furnish comprising fibers, adding starch to the furnish, adding microfibrillated cellulose to the furnish and conducting the furnish to a wire in order to form a web.
  • the addition of starch and MFC is preferably done in the machine chest or before the fan pump. It may also be possible to do the addition to the circulation water which later on is added to the furnish. However, all practical points of addition for the starch and MFC can be used as long as there is enough time and mixing of the starch and MFC with the furnish before it is conducted to the wire.
  • the starch and MFC is added separately. It is preferred to first add starch followed by addition of MFC. It could be possible to mix the starch and MFC before addition to the furnish, however the result is then not as good as when starch and MFC is added separately. It is then possible to mix starch and MFC before addition to the furnish by cooking them, preferably by the use of a jet-cooker. It has been shown that by cooking the mixture of starch and MFC, the MFC shows less tendency to flocculate. Furthermore, by altering the charge and charge density of e.g. starch, different degrees of flocculation can be obtained and it would thus be possible to neutralize the charge of MFC. This might affect dewatering and retention of the fibers and eventual fillers in the product. It may also be possible to add a layer of starch on the MFC and then add this mixture to the furnish, i.e. a multilayering effect can be created.
  • BCTMP Bleached chemothermomechanical pulp
  • Microfibrillated cellulose was prepared by refining bleached hardwood sulphite pulp of 4% consistency with edge load of 2 Ws/m to 28 SR. The pulp were thereafter enzymatically treated with Endoglucanase (Novozym 476) with the activity of 0.85 ECU/g. The enzymes were dosed to the pulp and which thereafter was treated at 50° C. for 2 hours, at pH 7. After the enzymatic treatment, the pulp was washed and enzymes were deactivated at 80° C. for 30 min.
  • the pulp was thereafter refined once more to 90-95 SR and the refined pulp was then fluidized (Microfluidizer, Microfuidics corp.) by letting pulp of 3% consistency pass through a 400 ⁇ m chamber followed by a 100 ⁇ m chamber wherein the MFC used were formed.
  • Starch used was cationized starch, Raisamyl 70021, Ciba (now BASF).
  • BMA used was Eka NP495, Eka Chemicals.
  • the dried BCTMP were soaked in water over night and then dispersed in hot water.
  • the BCTMP suspension was thereafter diluted to a concentration of 0.3%.
  • the produced MFC was also diluted to a concentration of 0.3% and dispersed using a kitchen mixer.
  • a formette sheet former was used to prepare the sheets for testing.
  • the sheets were prepared according to the following procedure; Pulp suspension measured to produce a 150 gsm sheet was added to the stock tank. During agitation, starch if used, and MFC if used, was added. After 30 seconds, 500 g/t C-PAM was added and after another 30 seconds was 300 g/t BMA added to the stock and the sheet forming was thereafter started.
  • the formed sheet was wet pressed and dried while the shrinkage was constrained.
  • the dried sheet was tested for structural density according to SCAN P 88:01, z-strength according to SCAN P 80:88 and tensile strength index according to ISO 1924-3.
  • the MFC and cationic starch were well mixed before addition to the stock.
  • cationic starch was first added and well mixed with the stock for 5 minutes followed by addition of MFC.
  • MFC in an amount of 25 kg/t and cationic starch in an amount of 20 kg/t were added in both samples, both the pre-mixed and the separately added.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Physics & Mathematics (AREA)
  • Composite Materials (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Paper (AREA)
US13/513,410 2009-12-03 2010-11-30 Process for production of a paper or paperboard product Abandoned US20120241114A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0950930A SE535014C2 (sv) 2009-12-03 2009-12-03 En pappers eller kartongprodukt och en process för tillverkning av en pappers eller kartongprodukt
SE0950930-8 2009-12-03
PCT/SE2010/051322 WO2011068457A1 (fr) 2009-12-03 2010-11-30 Procédé pour la production d'un produit en papier ou en carton

Publications (1)

Publication Number Publication Date
US20120241114A1 true US20120241114A1 (en) 2012-09-27

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US13/513,410 Abandoned US20120241114A1 (en) 2009-12-03 2010-11-30 Process for production of a paper or paperboard product

Country Status (13)

Country Link
US (1) US20120241114A1 (fr)
EP (1) EP2507432A4 (fr)
JP (1) JP2013513037A (fr)
CN (1) CN102639788A (fr)
AU (1) AU2010327382A1 (fr)
BR (1) BR112012013447A2 (fr)
CA (1) CA2782342A1 (fr)
CL (1) CL2012001385A1 (fr)
NZ (1) NZ600151A (fr)
RU (1) RU2012127561A (fr)
SE (1) SE535014C2 (fr)
WO (1) WO2011068457A1 (fr)
ZA (1) ZA201203737B (fr)

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US20110253333A1 (en) * 2010-04-15 2011-10-20 Buckman Laboratories International, Inc. Paper Making Processes and System Using Enzyme and Cationic Coagulant Combination
US20130180680A1 (en) * 2010-09-22 2013-07-18 Stora Enso Oyj Paper or paperboard product and a process for production of a paper or paperboard product
US20130292075A1 (en) * 2011-01-20 2013-11-07 Upm-Kymmene Corporation Method for improving strength and retention, and paper product
US20140345816A1 (en) * 2011-09-12 2014-11-27 Stora Enso Oyj Method of controlling retention and an intermediate product used in the method
US20150191036A1 (en) * 2012-05-29 2015-07-09 De La Rue International Limited Substrate for security documents
US20160186377A1 (en) * 2014-12-31 2016-06-30 Innovatech Engineering, LLC Formation of Hydrated Nanocellulose Sheets With or Without A Binder For The Use As A Dermatological Treatment
US20170167079A1 (en) * 2014-05-21 2017-06-15 Cellucomp Ltd. Cellulose microfibrils
US9970159B2 (en) 2014-12-31 2018-05-15 Innovatech Engineering, LLC Manufacture of hydrated nanocellulose sheets for use as a dermatological treatment
US20180245286A1 (en) * 2015-09-17 2018-08-30 Stora Enso Oyj Flexible microfibrillated film formation
CN108560308A (zh) * 2018-01-25 2018-09-21 吉林晨鸣纸业有限责任公司 一种胶版纸的制备方法
EP3237025B1 (fr) 2014-12-22 2019-04-24 UPM-Kymmene Corporation Traitement thermique d'un hydrogel de cellulose nanofibrillaire
WO2019190303A1 (fr) * 2018-03-27 2019-10-03 Mybiomass Sdn. Bhd. Produit de pâte écrue et son procédé de production
WO2020012074A1 (fr) * 2018-07-12 2020-01-16 Kemira Oyj Procédé de fabrication d'une bande fibreuse multicouche et bande fibreuse multicouche
SE2051028A1 (en) * 2020-09-01 2022-03-02 Stora Enso Oyj A method for producing a machine glazed paper comprising microfibrillated cellulose and a machine glazed paper
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WO2023133378A1 (fr) * 2022-01-07 2023-07-13 Domtar Paper Company, Llc Produits d'emballage ondulés contenant des fibres de pâte à papier à surface améliorée et leur fabrication
US12104324B2 (en) 2018-02-05 2024-10-01 Domtar Paper Company, Llc Paper products and pulps with surface enhanced pulp fibers and increased absorbency, and methods of making same
US12104327B2 (en) 2019-09-23 2024-10-01 Domtar Paper Company, Llc Tissues and paper towels incorporating surface enhanced pulp fibers and methods of making the same
US12116732B2 (en) 2019-09-23 2024-10-15 Domtar Paper Company, Llc Paper products incorporating surface enhanced pulp fibers and having decoupled wet and dry strengths and methods of making the same

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PT3828339T (pt) 2016-04-05 2024-01-02 Fiberlean Tech Ltd Produtos de papel e papelão
US11846072B2 (en) 2016-04-05 2023-12-19 Fiberlean Technologies Limited Process of making paper and paperboard products
JP6404411B2 (ja) * 2016-09-29 2018-10-10 栗原紙材株式会社 パルプモールド
SE540343C2 (en) 2016-11-01 2018-07-17 Stora Enso Oyj A corrugated board comprising an adhesive comprising starch and fine microfibrillated cellulose
SE540387C2 (en) 2016-12-21 2018-09-04 Stora Enso Oyj A process for surface sizing using a jet cooked dispersion comprising microfibrillated cellulose, starch and pigment and / or filler
US11313082B2 (en) 2016-12-27 2022-04-26 Scg Packaging Public Company Limited Sheet material comprising fiber and nano-microscale organic fibrillated filler and method of producing said sheet material
JP2018199872A (ja) * 2017-05-26 2018-12-20 栗原紙材株式会社 積層パルプモールドの製造方法および積層パルプモールド製造装置
CA3072852A1 (fr) * 2017-08-14 2019-02-21 Borregaard As Cellulose microfibrillee en tant que modificateur de rheologie dans des adhesifs
JP7077111B2 (ja) * 2018-04-10 2022-05-30 日本製紙株式会社 パルプモールド
SE542997C2 (en) * 2018-04-25 2020-09-22 Stora Enso Oyj A method to produce an adhesive comprising starch and microfibrillated cellulose, a corrugated board and an adhesive
BR102018010864A2 (pt) 2018-05-28 2019-12-10 Klabin S A papel e processo de fabricação de papel utilizando celulose microfibrilada na polpa de celulose
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CA2782342A1 (fr) 2011-06-09
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SE535014C2 (sv) 2012-03-13
EP2507432A1 (fr) 2012-10-10
WO2011068457A1 (fr) 2011-06-09
AU2010327382A1 (en) 2012-06-07
SE0950930A1 (sv) 2011-06-04
BR112012013447A2 (pt) 2016-04-19
EP2507432A4 (fr) 2014-01-22
RU2012127561A (ru) 2014-01-10
CN102639788A (zh) 2012-08-15
JP2013513037A (ja) 2013-04-18

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