US20060102303A1 - Board product and method for making the same - Google Patents

Board product and method for making the same Download PDF

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Publication number
US20060102303A1
US20060102303A1 US10/533,004 US53300405A US2006102303A1 US 20060102303 A1 US20060102303 A1 US 20060102303A1 US 53300405 A US53300405 A US 53300405A US 2006102303 A1 US2006102303 A1 US 2006102303A1
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US
United States
Prior art keywords
product
board
set forth
jacket
roll
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
US10/533,004
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English (en)
Inventor
Matti Lares
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.)
Valmet Technologies Oy
Original Assignee
Metso Paper Oy
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 Metso Paper Oy filed Critical Metso Paper Oy
Assigned to METSO PAPER, INC. reassignment METSO PAPER, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LARES, MATTI
Publication of US20060102303A1 publication Critical patent/US20060102303A1/en
Assigned to VALMET TECHNOLOGIES, INC. reassignment VALMET TECHNOLOGIES, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: METSO PAPER, INC.
Abandoned legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/006—Calenders; Smoothing apparatus with extended nips
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/30—Pretreatment of the paper
    • 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
    • D21H27/38—Multi-ply at least one of the sheets having a fibrous composition differing from that of other sheets
    • 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
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/08—Mechanical or thermomechanical 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/14—Secondary 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • 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
    • D21H19/80—Paper comprising more than one coating
    • D21H19/84—Paper comprising more than one coating on both sides of the substrate

Definitions

  • Embodiments of the present invention relate to a coated board product and a method of producing the same.
  • Board is required to have a certain surface quality for ensuring a desired gloss and print quality, a stiffness and tear resistance for securing the functionality of a package. Since board is produced in large quantities in a board mill, the efficient use of raw material is also important. However, these demands are somewhat contradictory to each other. Board can be provided with a sufficient gloss by calendering the board by compressing it in a nip, often moistened and heated in a certain manner. The surface fibers and coating of board are preferably pressed smooth by this compression, yet without compacting the middle ply of board. The compaction of a middle ply undermines board stiffness and reduces tear resistance. The compaction of a middle ply is often referred to as a loss of bulk. In this case, bulk is understood as being an inverse value to density and a loss thereof is thus equal to a densifying compaction of paper or board.
  • Packing boards are often coated and have a multi-ply structure. Coating and sizing are used for providing desired properties.
  • a typical basis weight range for folding boxboards is 180-350 g/m 2 .
  • the necessary basis weight depends on a required stiffness of the package, a lighter board being sufficient for small boxes.
  • Successful conservation of board bulk in surface treatment to produce thereby board of a higher stiffness results in savings of raw material and energy by enabling the use of board of a lesser basis weight.
  • Typical applications for board include cigarette packages, pharmaceutical packages, postcards, cardboard covers for books, various food packages.
  • Folding boxboards are often smoothed, prior to coating, with a Yankee cylinder, which enables a good bulk and stiffness, the surface properties being also good, the drying shrinkage along the edges being likewise small, yet the use of a Yankee cylinder is limited by speed restraint, space demand for equipment and the enormous size of a Yankee cylinder in a high-speed machine.
  • Another typical treatment method involves a wet-stack calender, the drawbacks of which include problems regarding runnability and a controlled application of water and, in addition, extra costs are incurred by the necessity of drying the board before and after a calendering process.
  • a machine calender is often used together with other calenders, the machine calender referring to a hard calender with no elasticity in its rolls.
  • the use of a machine calender as the sole surface treatment method is generally not advisable.
  • a soft calender refers to a soft-nip calender, wherein the calender roll has a surface which is elastic, the surface having possibly a hardness in the same order as the surface hardness of wood, yet being elastic.
  • a coated packing board comprises two or more fiber plies, wherein the outside plies consist of bleached chemical pulp and the middle plies of mechanical pulp or chemithermo-mechanical pulp, recycled paper pulp, recycled cardboard pulp or broke.
  • the body consists typically of recycled mixed pulp, the body and the top surface having therebetween a protective ply which typically consists of de-inked pulp (DIP), white ledger, chemithermo-mechanical pulp (CTMP) or mechanical pulp (GW).
  • the middle ply may have a core which consists for example of old corrugated containers (OCC), mixed waste paper pulp (MW), old newspapers (ONP), groundwood (SGW, PGW) or broke.
  • the backing comprises for example bleached chemical pulp or chemithermo-mechanical pulp.
  • the purpose of a multi-ply structure is to create a surface with good printing qualities, a dark recycled material being good enough for the middle ply.
  • a typical basis weight range is 200-400 g/m 2 .
  • the structure of a typical boxboard is illustrated in FIG. 4 .
  • the pretreatment of a boxboard surface prior to a coating process is performed with a machine calender and/or a Yankee cylinder.
  • the function of a machine calender is to provide the web with a uniform thickness profile. Smoothing of the surface is performed with a Yankee cylinder.
  • boxboard is treated with a long-nip calender prior to coating in order to upgrade the board qualities over what is known before and, in addition, the production runnability is improved and the production method is not subject to a speed restraint in the same way as an arrangement using a Yankee cylinder.
  • a long-nip calender suitable for making a board according to the invention has been described, for example, in U.S. Pat. No. 6,164,198 also assigned to the assignee of the present invention.
  • FIG. 1 is a sectional view of a long-nip calender, provided with an extended nip between an enclosed shoe calender and a counter roll;
  • FIG. 1A is a partial enlargement of FIG. 1 ;
  • FIG. 2A is a partial sectional view of the device shown in FIG. 1 , along the roll axis and depicting a drive mechanism;
  • FIG. 2B shows the operation of press shoes in a longitudinal section
  • FIG. 3 shows measuring results for test parcels in graphic representation
  • FIG. 4 shows the structure of a typical boxboard in a schematic view.
  • FIGS. 1-2 A calender suitable for the surface treatment of a board of the invention is shown in FIGS. 1-2 to include a fixed support element 14 , around which is a tubular jacket 12 .
  • a heated counter element 22 is disposed on the other side of the tubular jacket 12 from the support element, such that a web passes through between said counter element and the tubular jacket.
  • the fixed support element is provided with load elements 18 , 20 , applying the jacket 12 against the heated counter element 22 and thereby enabling a calendering process between the jacket and the counter element.
  • the jacket has its opposite ends secured to end walls 24 , 26 mounted rotatably relative to the support element, the rotary motion of the end walls being delivered by a separate drive motor, which is independent of a motion of the fiber web in order to avoid overheating of the jacket.
  • the drive motor is shown in the figure in dashed lines.
  • a method of the invention for conditioning the surface of coated or uncoated board with a surface conditioning device is in turn characterized in that the method comprises feeding a fiber web through an extended nip established by a roll and a counter-roll, the former being in the form of a tubular-shaped flexible jacket. Across the extent of the nip the jacket deflects and thereby presses into contact with the counter-roll over a long stretch.
  • the board treated with the method is lighter than currently available boards, while stiffness and surface properties are equal to those of currently available boards.
  • the solution enables a running speed substantially higher than what is accomplished with a Yankee-cylinder equipped board machine.
  • the runnability is better, this also contributing to improved quality and reducing waste.
  • Web speed in the calender may be higher than 600 m/min, preferably higher than 800 m/min, and still more preferably 1000 m/min, and even as high as about 4000 m/min. Thus, the calender does not restrict the speed of a board machine.
  • the above-mentioned heated roll has a temperature of 150-350° C., preferably higher than 170° C., most preferably about 200-250° C.
  • Linear pressure in the nip is within the range of 100-500 kN/m, preferably less than 400 kN/m, most preferably about 50-300 kN/m. Maximum pressure in the nip is 3-15 MPa, preferably less than 13 MPa, most preferably about 0.5-8 MPa.
  • a board web 80 travels through an extended and heated nip 1 .
  • the nip 1 is established by an enclosed shoe roll 10 present under the web 80 .
  • Above the web 80 is a heatable counter-roll 22 .
  • the enclosed shoe roll 10 comprises a flexible jacket 12 impervious to liquid.
  • the jacket consists for example of fiber-reinforced polyurethane.
  • the stationary fixed support element 14 carries at least one load shoe 18 .
  • an actuator 20 such as a hydraulic cylinder, for urging the concave load shoe 18 and thereby also the flexible jacket 12 against the counter-roll 22 .
  • the jacket 12 is forced out of its normal unloaded position 11 in a direction away from the center of the enclosed shoe roll.
  • the jacket 12 is fastened at both ends thereof to end walls 24 , 26 , thus creating a sealed compartment 13 (see FIG. 2 ).
  • at least one detector device 99 is mounted in communication with the web 80 for detecting web breaks.
  • the detector device 99 is connected to a control device 98 for controlling the operation of a calendering process in dependence of the web being broken or not.
  • the heatable counter-roll 22 is accompanied by a disengagement mechanism, comprising a lever 95 pivotable by a hydraulic cylinder assembly 94 and provided with a pivot point 96 for pivoting the lever thereon.
  • the disengagement mechanism presses the counter-roll 22 to an engagement with the nip 1 and disengages it from the nip 1 .
  • a pressurized oil which develops a hydrostatic pressure throughout the nip and presses the jacket to an engagement with the counter-roll 22 over the entire extent of the nip 1 .
  • the oil protects the jacket from being damaged by lumps and a temperature rise.
  • FIG. 2A it is shown that the end walls 24 , 26 are rotatably mounted on stub shafts 16 , 17 of the support element 14 (The end walls are preferably not integral but divided into a static part and a rotating part as shown in FIG. 2B ).
  • a cylindrical shaft 32 On one end of the stub shaft, a cylindrical shaft 32 is arranged rotatably via bearings 34 .
  • a support column 36 is arranged to the cylindrical shaft via self-aligning bearings 38 , which allow spherical movement to allow the deformation/bending of the support element 14 when heavily loaded.
  • One of the end walls 24 is fixedly attached to the cylindrical shaft.
  • a drive transmission 40 is fixedly attached to the cylindrical shaft outside the end wall, in the shown embodiment a cog wheel.
  • the cog wheel is connected to a transmission 42 and in turn a drive 44 .
  • a cog wheel 46 is fixedly attached to the cylindrical shaft inside the end wall.
  • a drive shaft 48 is arranged inside the jacket and parallel to the support element 14 .
  • the drive shaft 48 is supported by bearings 50 arranged in bearing houses 52 attached to the support element.
  • cog wheels 54 are arranged at each end of the drive shaft.
  • Preferably these cog wheels have a prolonged toothed portion to allow axial movement of the intermeshing cog wheel which is attached to the end wall.
  • a further cog wheel 56 is fixedly attached to the second end wall 26 inside the jacket. Both cog wheels inside the jacket mesh with the corresponding cog wheel on the drive shaft.
  • the second end wall 26 is rotatably arranged on the second stub shaft 17 .
  • the second stub shaft is in turn fixedly attached to a second support column 58 .
  • the operation is as follows.
  • the driven heated roll 22 is in interaction with the fiber web and the flexible jacket 12 by a desired pressure being exerted by the load shoe 18 , thereby causing a friction based drive of both the fiber web and the flexible jacket. Accordingly, during normal operation the forces exerted in the nip provide for rotation of the enclosed shoe roll.
  • the independent drive arrangement of the enclosed shoe roll is to be used for instance at the start-up of the calendering surface. At the start, the nip gap is not closed, but the roll 22 has been moved out of contact with the nip 1 .
  • the drive arrangement 44 of the enclosed shoe roll 10 is activated to accelerate the first end wall 24 via transmissions.
  • the rotation of the end wall causes the inner first cog wheel 46 to rotate, and subsequently the drive shaft 48 .
  • the drive shaft transmits the rotation to the second end wall 26 via the second inner cog wheel 56 .
  • the both end walls are thus accelerated and rotate at the same speed until a desired peripheral speed is obtained, which is normally equal to the speed of the fiber web.
  • the nip is closed by activating the hydraulic piston 94 to pivot the lever 95 and thereby moving the counter-roll 22 into the nip and subsequently the load shoe 18 is urged against the heated roll 22 by its actuators 20 .
  • the drive arrangement of the enclosed shoe roll can be deactivated and the press roll driven in a conventional manner by friction within the nip 1 .
  • FIG. 2B there is shown an alternative embodiment of the drive arrangement for an enclosed shoe roll. This embodiment uses friction for the transmission of rotational forces.
  • FIG. 2B also shows a design of arranging the support element and the end walls.
  • the end walls are divided into inner parts 24 A, 26 A connected non-rotatably to the support element 14 , a rotational part 24 B, 26 B, and a bearing assembly 24 C, 26 C therebetween.
  • the support element 14 is at its ends arranged with self-aligning bearings 23 , 25 to allow a deflection of the support element 14 .
  • a drive 44 having a shaft 19 B.
  • a disc 19 having a rubber layer at its peripheral end 19 A.
  • the outer ends of the flexible jacket 12 are fixedly attached between an annular ring 15 , acting as a replaceable force transmitting device, and the periphery of each end wall.
  • the ring 15 is fixedly attached to the end wall.
  • the drive arrangement 44 , 19 is movable in and out of contact with the force transmitting device 15 .
  • FIG. 2B further illustrates in a schematic view of one functional embodiment of the load shoe 18 .
  • the load shoe 18 is not disposed diametrically relative to the drive shaft, but perpendicularly as in FIG. 2A .
  • test batches manufactured by a long-nip calender as described above the board could be provided with a ratio of bulk and smoothness better than in currently available types of board.
  • the goals of the invention are achieved.
  • Shoe calenders can be driven at high speeds and, furthermore, by the application of an elevated temperature, e.g. about 250° C., and by taking into account a long dwell time in the calendering zone, the resulting gloss finish will be equal to what is achieved in a slower solution using a Yankee cylinder.
  • the board is provided with improved bulk.
  • the results include savings of production space in a mill, the elimination of a production limiting Yankee cylinder, and the provision of a more manageable, more easily controlled system.
  • surface moistening can be provided prior to calendering.
  • the board can also be produced without surface moistening.
  • Pilot tests were conducted for comparing a board manufactured on a normal Yankee cylinder with a board produced with the same machine, which was not smoothed by a Yankee cylinder, but which was calendered in pilot conditions by a shoe calender as described above. As a reference, the same board was also calendered with a soft calender.
  • FIG. 3 illustrates the ratio of Bendtsen roughness to obtained bulk.
  • the grades treated by a shoe calender are designated with the word shoe, those manufactured by a soft-nip calender with the word soft.
  • the degrees refer to a calendering temperature and the symbol reference is used to refer to a grade of board manufactured with a Yankee cylinder.
  • Bendtsen roughness is about 500 ml/min or less, while bulk is more than 1.40.
  • the board smoothed with a Yankee cylinder is smooth in terms of roughness, about 300 ml/min, but its bulk is only in the order of 1.29. Though these results were obtained in pilot conditions, experience indicates that the results should also improve in production conditions.
  • the measurements relate to precalendering results prior to coating.
  • the method is capable of producing board, which has a basis weight of 150-500 g/m 2 , PPS-s10 roughness (ISO 8791-4) 0.8-3.0 ⁇ m, Hunter gloss (ISO/DIS 8254) 30-80%, and a density (SCAN-P7:75) of 500-1000 kg/m 3 .
  • the obtained board is higher in bulk and smooth and, in addition, the production method is not speed restricted the same way as with a Yankee cylinder.
  • the method provides saving in board manufacture and improves economy. Especially, the increase of capacity is possible with the same board machine by on-line calendering. In the case of a new mill, space is also saved in comparison with a Yankee cylinder.
  • the provision of higher bulk represents a direct saving in terms of the amount of material and energy needed for production, the lighter packing board saving likewise energy over its service life and ultimately producing less waste.

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US10/533,004 2002-11-27 2003-11-14 Board product and method for making the same Abandoned US20060102303A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20025050A FI114163B (fi) 2002-11-27 2002-11-27 Kartonkituote ja menetelmä sen valmistamiseksi
FI20025050 2002-11-27
PCT/FI2003/000870 WO2004048688A1 (en) 2002-11-27 2003-11-14 Board product and method for making the same

Publications (1)

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US20060102303A1 true US20060102303A1 (en) 2006-05-18

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US10/533,004 Abandoned US20060102303A1 (en) 2002-11-27 2003-11-14 Board product and method for making the same

Country Status (6)

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US (1) US20060102303A1 (fi)
JP (1) JP2006508268A (fi)
AU (1) AU2003284856A1 (fi)
DE (1) DE10393787T5 (fi)
FI (1) FI114163B (fi)
WO (1) WO2004048688A1 (fi)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060118256A1 (en) * 2002-11-27 2006-06-08 Matti Lares Lwc paper product and method of making the same
US8349443B2 (en) 2006-02-23 2013-01-08 Meadwestvaco Corporation Method for treating a substrate
EP2669432A1 (en) 2012-05-30 2013-12-04 Metso Paper Inc. Method for making multiply-board and multiply-board product
EP2376708B1 (en) 2009-02-10 2016-07-13 MeadWestvaco Corporation Low density paper and paperboard with two-sided coating
EP3896222A1 (en) * 2020-04-16 2021-10-20 Metsä Board Oyj A multilayered fibrous sheet, a method for making a multilayered fibrous sheet, and use of mechanical pulp

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4861427A (en) * 1987-05-04 1989-08-29 Weyerhaeuser Company Bacterial cellulose as surface treatment for fibrous web
US6022448A (en) * 1995-03-16 2000-02-08 Korsnab Ab Coated paperboard for formed articles
US6164198A (en) * 1998-12-16 2000-12-26 Valmet Corporation Apparatus for calendering paper
US6190500B1 (en) * 1998-10-02 2001-02-20 International Paper Company Multilayer linerboard having improved printing properties and related method of manufacture
US6287424B1 (en) * 1998-09-22 2001-09-11 International Paper Company Method for finishing paperboard to achieve improved smoothness
US6379497B1 (en) * 1996-09-20 2002-04-30 Fort James Corporation Bulk enhanced paperboard and shaped products made therefrom
US20030152724A1 (en) * 1997-02-26 2003-08-14 Fort James Corporation Coated paperboards and paperboard containers having improved tactile and bulk insulation properties
US20060060322A1 (en) * 2002-01-29 2006-03-23 Mika Viljanmaa Processing device for processing a coated or uncoated fibrous web
US20060118256A1 (en) * 2002-11-27 2006-06-08 Matti Lares Lwc paper product and method of making the same
US20060124262A1 (en) * 2002-11-27 2006-06-15 Matti Lares Board product and method for making the same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI104745B (fi) * 1998-06-25 2000-03-31 Valmet Corp Menetelmä ja sovitelma paperin ja kartongin kalanteroimiseksi

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4861427A (en) * 1987-05-04 1989-08-29 Weyerhaeuser Company Bacterial cellulose as surface treatment for fibrous web
US6022448A (en) * 1995-03-16 2000-02-08 Korsnab Ab Coated paperboard for formed articles
US6379497B1 (en) * 1996-09-20 2002-04-30 Fort James Corporation Bulk enhanced paperboard and shaped products made therefrom
US6919111B2 (en) * 1997-02-26 2005-07-19 Fort James Corporation Coated paperboards and paperboard containers having improved tactile and bulk insulation properties
US20030152724A1 (en) * 1997-02-26 2003-08-14 Fort James Corporation Coated paperboards and paperboard containers having improved tactile and bulk insulation properties
US20020060005A1 (en) * 1998-09-22 2002-05-23 Mohan K. Krishna Method and apparatus for finishing paperboard to achieve improved smoothness and bulk
US6287424B1 (en) * 1998-09-22 2001-09-11 International Paper Company Method for finishing paperboard to achieve improved smoothness
US6497790B2 (en) * 1998-09-22 2002-12-24 International Paper Company Paperboard of improved smoothness and bulk
US6190500B1 (en) * 1998-10-02 2001-02-20 International Paper Company Multilayer linerboard having improved printing properties and related method of manufacture
US6164198A (en) * 1998-12-16 2000-12-26 Valmet Corporation Apparatus for calendering paper
US20060060322A1 (en) * 2002-01-29 2006-03-23 Mika Viljanmaa Processing device for processing a coated or uncoated fibrous web
US20060118256A1 (en) * 2002-11-27 2006-06-08 Matti Lares Lwc paper product and method of making the same
US20060124262A1 (en) * 2002-11-27 2006-06-15 Matti Lares Board product and method for making the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060118256A1 (en) * 2002-11-27 2006-06-08 Matti Lares Lwc paper product and method of making the same
US8349443B2 (en) 2006-02-23 2013-01-08 Meadwestvaco Corporation Method for treating a substrate
US8673398B2 (en) 2006-02-23 2014-03-18 Meadwestvaco Corporation Method for treating a substrate
EP2376708B1 (en) 2009-02-10 2016-07-13 MeadWestvaco Corporation Low density paper and paperboard with two-sided coating
US10619306B2 (en) 2009-02-10 2020-04-14 Westrock Mwv, Llc Low density paper and paperboard with two-sided coating
EP2669432A1 (en) 2012-05-30 2013-12-04 Metso Paper Inc. Method for making multiply-board and multiply-board product
EP3896222A1 (en) * 2020-04-16 2021-10-20 Metsä Board Oyj A multilayered fibrous sheet, a method for making a multilayered fibrous sheet, and use of mechanical pulp
US12018434B2 (en) 2020-04-16 2024-06-25 Metsä Board Oyj Multilayered fibrous sheet, a method for making a multilayered fibrous sheet, and use of mechanical pulp

Also Published As

Publication number Publication date
FI20025050A0 (fi) 2002-11-27
FI114163B (fi) 2004-08-31
FI20025050A (fi) 2004-05-28
AU2003284856A1 (en) 2004-06-18
JP2006508268A (ja) 2006-03-09
WO2004048688A1 (en) 2004-06-10
DE10393787T5 (de) 2005-10-06

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