[go: up one dir, main page]

WO2005028751A1 - Procede pour produire une bande de papier ou de carton encollee en surface - Google Patents

Procede pour produire une bande de papier ou de carton encollee en surface Download PDF

Info

Publication number
WO2005028751A1
WO2005028751A1 PCT/FI2004/000556 FI2004000556W WO2005028751A1 WO 2005028751 A1 WO2005028751 A1 WO 2005028751A1 FI 2004000556 W FI2004000556 W FI 2004000556W WO 2005028751 A1 WO2005028751 A1 WO 2005028751A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
size
application
sizing
applicator
Prior art date
Application number
PCT/FI2004/000556
Other languages
English (en)
Inventor
Jussi Kangas
Robert Havukainen
Rauno Rantanen
Original Assignee
Metso Paper, Inc.
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, Inc. filed Critical Metso Paper, Inc.
Publication of WO2005028751A1 publication Critical patent/WO2005028751A1/fr

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
    • 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
    • D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
    • D21H23/72—Plural serial stages only
    • 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

Definitions

  • the invention relates to a method according to the preamble of claim 1 for the manufacture of a surface sized paper or cardboard web.
  • the invention further relates to an arrangement for implementing the method.
  • the liner of corrugated board and fluting, treating the web with size is an essential part of the manufacture, essentially determining the tensile properties of the end product.
  • size is added to the surfaces of the web, and with the multi-layer technology becoming common in the web manufacture, it is also added between the layers of the web into its middle.
  • the purpose of sizing is to improve the printing properties of the paper surface by increasing its surface strength, whereby the paper is better in resisting stresses during printing, and will not lint very much when used in a copying machine, for example. Furthermore, as the capillary spread of the ink in the paper is decreased, the print is improved.
  • the most important objective of surface sizing is mostly to increase the strength. Accordingly, when strength is required, as great an amount of size as possible is often used for board grades to obtain the highest possible strength.
  • Surface sizing is traditionally carried out by a pond size press, wherein the web to be treated travels vertically between a nip formed by two opposite rolls. Surface size is applied to the nip between the rolls so that it forms a pond on top of the nip.
  • Pond size presses can be used to obtain the highest strengths for thick board grades.
  • the application rates for the pond size presses are within a range of 30 to 100 g/m 2 , when adding up the application rates on both sides of the web.
  • Typical application rates of size on the surface board of the corrugated board, i.e., on the liner and on fluting are within a range of 60 to 90 g/m 2 .
  • pond size presses One disadvantage of the pond size presses is their poor runnability caused by turbulences in the pools and vibrations on the inlet side of the web that is treated, limiting the coating speed. At the moment, the greatest running speed of the pond size presses is about 1000 m/min. In pond size application, a lot of water is also absorbed by the web because of the way of application. On a typical dry content of 8% and rate of application, the amount of size remaining on the web after the size has dried is about 4 to 8 g/m 2 . The large amount of water weakens the web and increases the need for drying power.
  • Surface sizing can also be carried out by a film transfer coater, wherein the web to be treated also travels through a nip between two rolls. The size is applied with a special applicator on the surfaces of one or both rolls, from where it transfers onto the surface of the web being treated in the nip between the rolls. The thickness and the profile of the size layer on the surface of the roll can be adjusted by means of a rotating coating rod or coating knife. The nmnability of the film transfer coaters is good, but one of their weaknesses is the limited application rate. The highest application rate of the film transfer coaters in surface sizing is about 30 to 60 g/m 2 .
  • the purpose of the invention is to provide a novel method that can be used to apply larger amounts of size on the web.
  • the invention is based on the fact that surface size is applied on the web, which is to be treated, in two separate stages.
  • the web is dried between the first and the second application stages.
  • the invention provides significant benefits.
  • the total amount of wet size applied on the web can be considerably larger than in an application carried out in one single stage.
  • the total amount of wet size applied on the web can be, in practice, as much as 80 to 120 g/m 2 in the manufacture of liner and fluting, for example.
  • the second applicator of the mixed size and the intermediate drying unit do not essentially increase the length of the paper or board production line, which is why the invention can also be applied to existing production lines.
  • the runnability of the web improves, and it is often possible to use higher running speeds, because the amount of wet size applied on the web at a time is smaller compared with a case, in which the size is applied on the web in one single stage.
  • the size application carried out in two stages increases the flexibility of surface sizing; for example, the first applicator can be used to surface-size one or both surfaces of the web and the second applicator can be used to apply size on one surface of the web and a pigment coating on the other, or different types of sizes can be used in the various stages of application.
  • the moisture content of the surface-sized web can be higher compared with surface sizing carried out by one unit, because the humidity of the web does not become too high after the size press, as only part of the total amount of size is applied at a time.
  • Fig. 1 is a schematic view of the initial part of a paper or board machine.
  • Fig. 2 is a schematic view of the end part of the paper or board machine of Fig. 1.
  • the manufacture of a paper or board web 4 begins from a headbox 1.
  • the web 4 is formed in the headbox 1 by spraying fibrous pulp containing a great deal of water between two wires. In addition to water and fibres, the pulp can also contain many other ingredients, such as mineral fillers.
  • the web is taken from the headbox 1 to a press section 2, where water is removed from the pulp and the solid web 4 begins to form. After the press section 2, the web is taken to a dryer section 3, where the web 4 is dried by heating.
  • the direction of travel of web 4 is marked by arrows in the drawings.
  • the web 4 is taken to a first surface sizing device 5, where size is applied on the web 4.
  • the moisture content of the web 4 coming to the first surface sizing device 5 is not higher than 15%, typically 5 to 15%. Size can only be applied on the first surface of web 4 or, alternatively, on both the first and the second surfaces of the web 4. In order for the size to penetrate the web 4 as deep as possible, the dry content and the viscosity of the size applied on the web 4 by the first surface sizing device 5 are low. In that case, also the amount of dry size remaining in the web is low.
  • a so-called bleed through is preferably carried out on the web 4 by the first surface sizing device 5, whereby the size penetrates throughout the thickness of the web 4 or essentially throughout the thickness of the web 4.
  • the penetration of size into web 4 is at least on one surface higher than in the second stage of surface sizing.
  • the dry content of the size applied by the first surface sizing device 5 is typically less than 10% and its viscosity less than 40 mPas.
  • the amount of wet size applied on the web 4 is typically 30 to 60 g/m 2 .
  • the surface sizing device 5 is preferably a pond size press or a film transfer coater.
  • the web to be treated travels through a nip between two rolls.
  • the treatment can either be carried out on both surfaces or only on one surface of the web.
  • the application devices used are injection pipes of size, which are not described in this connection.
  • the applicator of size is preferably a pond size press.
  • the web that is treated travels through a nip between two rolls. Size is spread with a special applicator on the surface of one or both rolls, from where it transfers onto the surface(s) of the web that is treated in the nip between the rolls.
  • the thickness and the profile of the glue line on the surface of the roll can be adjusted by means of a rotating coating rod or doctor blade.
  • the web 4 is dried by preferably heating it by means of a set of dryer cylinders 6, which comprises dryer cylinders 7 that can be heated.
  • the dryer cylinders 7 support the web 4 during drying.
  • the web 4 is dried to the desired moisture content.
  • the web 4 is taken to the second surface sizing device 9, wherein size is applied on the web 4 once again.
  • Size can be applied on the first surface of the web 4 only or, alternatively, on both surfaces of the web.
  • the dry content of size that is to be applied is preferably higher than that of the size applied in the first step of surface sizing 5.
  • the dry content of size in the second step of surface sizing 9 is 9 to 20%, and that of the wet size that is spread onto the web is 30 to 60 g/m .
  • the film transfer coater is preferably used as the applicator 9 of size.
  • the web 4 is dried by cylinder driers 10.
  • the paper or board machine comprises a winder 11 and other necessary roll handling devices.
  • the first step of application 5 of surface size, the intermediate drying 6 and the second step of application 6 of surface size take preferably place directly one after the other.
  • the web 4 is not treated in any other way between the above treating steps.
  • the first applicator 5, the intermediate dryer 6 and the second applicator 9 are placed directly one after the other in the direction of travel of the web 4 so that no other web treatment devices are located between them.
  • the web treatment device does not refer to the guiding or application devices of the web.
  • surface sizing mainly refers to a treatment that improves the strength of the paper and/or board.
  • the treating substance is starch that is dissolved in water.
  • the purpose of the surface size is to absorb into the surface that is treated, whereby it binds the fibres of the web so as to form a stronger layer.
  • No adhesive layer should be formed on the surface of the web that is treated, and the surface sizing does not refer to making laminated products by gluing layers together.
  • the surface size is not to form a separate layer on the surface that is treated but the size should be absorbed into the web to form a uniform layer together with the web's fibres. Accordingly, the dry content of the size is generally low. On the other hand, any increase in the dry t content is limited by the fact that the starch becomes more difficult to handle and its fluidity weakens when the dry content increases.
  • one or both surfaces can be surface-sized and in the second step of surface sizing 9, instead of merely surface sizing, either one or both surfaces of the web can be pigment coated or one surface can be surface-sized and the other one can be pigment coated.
  • This type of a method is especially advantageous for liner or for paper or board that is pigment coated on one surface only.
  • surface sizing of a maximum penetration can be applied on one surface of the web and in the second step 9, pigment coating can further be applied on this surface and surface sizing can be applied on the other surface of the web.
  • both surfaces of the web can be surface-sized by the first device 5, and one surface of the web can be pigment coated by the second device 9 and increase its strength properties by surface-sizing the other surface of the web.
  • the equipment according to the method can also be used to pigment coat both sides of paper or board, whereby the first device 5 is used to surface-size one or both surfaces of the web; and the second device 9 is used to pigment coat both surfaces of the web.
  • the equipment can be used to make pigment coated paper and board grades without the need to make large additional investments.
  • it is preferable to use an intermediate calender in connection with pigment coating for example, after surface sizing carried out by the first device 5; and a certain amount of non-contacting drying before cylinder drying and after the pigment coating carried out by the second device 9.

Landscapes

  • Paper (AREA)

Abstract

Cette invention se rapporte à un procédé servant à fabriquer une bande de papier ou de carton (4) encollée en surface et consistant à cet effet à appliquer un encollage sur au moins une surface de la bande (4) dans une première étape d'encollage de surface (5), puis à sécher (6) la bande (4). Après l'opération de séchage (6), un encollage est appliqué sur au moins une surface de la bande (4) dans une seconde étape d'encollage de surface (9).
PCT/FI2004/000556 2003-09-22 2004-09-21 Procede pour produire une bande de papier ou de carton encollee en surface WO2005028751A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20031362 2003-09-22
FI20031362A FI20031362L (fi) 2003-09-22 2003-09-22 Menetelmä pintaliimatun paperi- tai kartonkirainan valmistamiseksi

Publications (1)

Publication Number Publication Date
WO2005028751A1 true WO2005028751A1 (fr) 2005-03-31

Family

ID=27839025

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2004/000556 WO2005028751A1 (fr) 2003-09-22 2004-09-21 Procede pour produire une bande de papier ou de carton encollee en surface

Country Status (2)

Country Link
FI (1) FI20031362L (fr)
WO (1) WO2005028751A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022063456A1 (fr) * 2020-09-25 2022-03-31 Voith Patent Gmbh Machine et procédé permettant de produire et/ou de manipuler une bande de papier brut de carton ondulé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0609483A1 (fr) * 1993-01-29 1994-08-10 J.M. Voith GmbH Procédé et dispositif pour l'enduction d'une bande de papier
US6284097B1 (en) * 1997-02-10 2001-09-04 Voith Sulzer Papiermaschinen Gmbh Method and apparatus to produce paper webs coated on both sides
EP1348809A1 (fr) * 2002-03-22 2003-10-01 Voith Paper Patent GmbH Appareil de couchage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0609483A1 (fr) * 1993-01-29 1994-08-10 J.M. Voith GmbH Procédé et dispositif pour l'enduction d'une bande de papier
US6284097B1 (en) * 1997-02-10 2001-09-04 Voith Sulzer Papiermaschinen Gmbh Method and apparatus to produce paper webs coated on both sides
EP1348809A1 (fr) * 2002-03-22 2003-10-01 Voith Paper Patent GmbH Appareil de couchage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022063456A1 (fr) * 2020-09-25 2022-03-31 Voith Patent Gmbh Machine et procédé permettant de produire et/ou de manipuler une bande de papier brut de carton ondulé

Also Published As

Publication number Publication date
FI20031362A0 (fi) 2003-09-22
FI20031362A7 (fi) 2005-03-24
FI20031362L (fi) 2005-03-24

Similar Documents

Publication Publication Date Title
US5753078A (en) Method of making surface coated or impregnated paper or paperboard
FI112873B (fi) Menetelmä ja sovitelma paperi- ja kartonkirainan käsittelemiseksi
JP6849669B2 (ja) 密なフィルムの表面サイジング
EP1054100A2 (fr) Dispositif pour la fabrication d'une bande de papier ou carton et une machine à papier ou carton
WO2011151238A1 (fr) Procédé de production d'une bande fibreuse multicouche enduite
US20040026054A1 (en) Method for manufacturing a coated fibre web, improved paper or board machine and coated paper or board
FI110443B (fi) Liimakäsitellyn paperin tai kartongin valmistamiseen tarkoitettu menetelmä ja sovitelma
US20050003083A1 (en) Method for producing sized paper or cardboard
CA2335631C (fr) Procede et appareil de traitement de la surface d'une bande
WO2000055424A1 (fr) Procede et dispositif permettant de fabriquer du papier couche, et papier couche
FI122859B (fi) Menetelmä ja laitteisto paperin/kartongin pintakäsittelemiseksi
US6485611B2 (en) Method for smoothening a paper web before coating
ATE550488T1 (de) Verfahren zur herstellung einer beschichteten papier-, karton- oder anderen faserstoffbahn
US6537616B2 (en) Stam-assisted paper impregnation
WO2005028751A1 (fr) Procede pour produire une bande de papier ou de carton encollee en surface
CA2107277C (fr) Appareil servant a coucher des deux cotes une bande mince de papier d'impression obtenu a partir de pate mecanique, et methode connexe
US6551454B1 (en) Method for producing coated calendered paper
US6537615B2 (en) Steam-assisted paper impregnation
WO1998037275A1 (fr) Procede de traitement de carton ou de papier, dispositif pour mettre en oeuvre ce procede et produit obtenu a l'aide de ces procede et dispositif
US20050072541A1 (en) Sizing method for board
FI80314B (fi) Anordning foer avstrykning och utjaemning av pao en loepande papp- eller pappersbana paofoerd bestrykningssmet.
FI121935B (fi) Parannettu paperinvalmistusmenetelmä
FI116406B (fi) Menetelmä kuiturainan päällystämiseksi
CN101040087A (zh) 表面施胶纸/纸板的制造方法
US20020029860A1 (en) Moisture barrier paper and process for making the same

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GM HR HU ID IL IN IS JP KE KG KP KZ LC LK LR LS LT LU LV MA MD MK MN MW MX MZ NA NI NO NZ PG PH PL PT RO RU SC SD SE SG SK SY TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SZ TZ UG ZM ZW AM AZ BY KG MD RU TJ TM AT BE BG CH CY DE DK EE ES FI FR GB GR HU IE IT MC NL PL PT RO SE SI SK TR BF CF CG CI CM GA GN GQ GW ML MR SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
122 Ep: pct application non-entry in european phase