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FI111281B - Cardboard finishing procedure - Google Patents

Cardboard finishing procedure Download PDF

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Publication number
FI111281B
FI111281B FI20012446A FI20012446A FI111281B FI 111281 B FI111281 B FI 111281B FI 20012446 A FI20012446 A FI 20012446A FI 20012446 A FI20012446 A FI 20012446A FI 111281 B FI111281 B FI 111281B
Authority
FI
Finland
Prior art keywords
coating
web
cardboard
carried out
actual
Prior art date
Application number
FI20012446A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20012446A0 (en
Inventor
Stefan Kuni
Matti Lares
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
Priority to FI20012446A priority Critical patent/FI111281B/en
Publication of FI20012446A0 publication Critical patent/FI20012446A0/en
Priority to DE10297514T priority patent/DE10297514T5/en
Priority to AU2002338999A priority patent/AU2002338999A1/en
Priority to PCT/FI2002/000908 priority patent/WO2003050352A1/en
Priority to CN 02824504 priority patent/CN1284901C/en
Application granted granted Critical
Publication of FI111281B publication Critical patent/FI111281B/en

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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • 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

Landscapes

  • Paper (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Description

111281111281

Menetelmä kartongin jälkikäsittelemiseksiMethod for post-treatment of cardboard

Esillä olevan keksinnön kohteena on menetelmä kartongin, erityisesti kierrä-tyskartongin (WLC=white line chip board) jälkikäsittelemiseksi.The present invention relates to a process for post-treatment of paperboard, in particular recycled board (WLC).

55

Kierrätyskartonki koostuu kokonaan tai osittain kierrätyskuiduista ja sitä käytetään esim. kuivien elintarvikkeiden pakkauksiin sekä muiden kuin elintarvikkeiden pakkauksiin. WLC-kartonki on tyypillisesti nelikerroksinen käsittäen esimerkiksi pohjakerroksen (kierrätysmassaa), täytekerroksen (kierrätysmas-10 sa), sellukerroksen ja päällystyksen. WLC:n valmistusmäärät kasvavat jatkuvasti painottuen lähinnä Aasiaan. Samalla kun raaka-aineen laatu heikkenee kasvavat lopputuotteen laatuvaatimukset ja tästä johtuen mm. päällystys suoritetaan yleisesti kolmeen kertaan riittävän peittokyvyn aikaansaamiseksi. Nykyisen tietämykseen mukaan paras WLC-laatu saadaan esikäsittelemällä 15 kartongin pinta ennen päällystystä jenkkisylinterillä ja profiloivalla konekalan-terilla.Recycled paperboard consists wholly or partly of recycled fibers and is used, for example, in dry food packaging and non-food packaging. WLC board is typically four-layered, comprising, for example, a base layer (recycled pulp), a filler layer (recycled pulp-10), a pulp layer and a coating. WLC's production volumes are growing, with a focus on Asia. As the quality of the raw material diminishes, the quality requirements of the end product are increasing and, as a result, e.g. the coating is generally carried out three times to provide sufficient coverage. To the best of our knowledge, the best WLC quality is obtained by pre-treating 15 board surfaces with a Yankee cylinder and profiling machine caliper before coating.

Esillä olevan keksinnön päämääränä on aikaansaada parannettu jälkikäsitte-lymenetelmä, joka aikaansaa nykyistä selvästi sileämmät ja vaaleammat kar-20 tonkilajit, erityisesti WLC-kartongit. Tämän päämäärän toteuttamiseksi keksinnön mukaiselle menetelmälle on tunnusomaista se, että menetelmässä kartonkirainalle suoritetaan aluksi konekalanterointi, seuraavana rainalle tehdään esipäällystys, sitten raina ajetaan pitkänippikalanterin läpi ja edelleen varsinaiseen päällystysasemaan / -asemille yhden tai useamman päällystys-25 kerroksen muodostamiseksi rainan pintaan, ja lopuksi rainalle suoritetaan loppukalanterointi. Varsinaisen päällystysaseman jälkeen, ennen loppukalan-; terointia voidaan rainalle suorittaa vielä lisäpäällystys teräpäällystyksellä rai nan sileyden ja kiillon edelleen parantamiseksi.It is an object of the present invention to provide an improved post-treatment process which provides a considerably smoother and lighter grade of cardboard, in particular WLC board. To accomplish this goal, the method of the invention is characterized in that the method first comprises machine calendering the paperboard, then pre-coating the web, then passing the web through a long nip calender and then to . After the actual coating station, before the final fish; further sharpening of the web may be performed by further coating the blade to further improve the smoothness and gloss of the web.

30 Seuraavassa keksintöä selostetaan lähemmin oheiseen piirustukseen viitaten, jossa: 2The invention will now be described in more detail with reference to the accompanying drawing, in which:

I I i/ö II I i / ö I

Kuvio 1 esittää kaaviomaisesti tyypillisen WLC -kartongin rakennetta, jaFigure 1 schematically illustrates the structure of a typical WLC board, and

Kuvio 2 esittää kaaviomaisesti erästä järjestelyä keksinnön mukaisen me netelmän suorittamiseksi.Figure 2 schematically shows an arrangement for carrying out the method according to the invention.

55

Kuviossa 1 on esitetty kaaviomaisesti erään WLC-kartongin monikerroksinen rakenne, johon esitetyssä suoritusmuodossa kuuluu kierrätysmassa oleva pohjakerros 1, samoin kierrätysmassa oleva täytekerros 2, sellukerros 3 ja päällyste 4, joka voi muodostua useammasta päällystyskerroksesta.FIG.

1010

Kuvion 2 suoritusmuotoesimerkissä on kuvattu erästä keksinnön mukaista jälkikäsittelymenetelmää, jossa kartonkiraina W viedään ensin konekalanterin 10 läpi sen paksuuden profiloimiseksi. Tämän jälkeen rainalle viedään terä-päällystysasemaan 11 esipäällystyksen suorittamiseksi rainan sileyden paran-15 tamiseksi. Sitten raina ajetaan pitkänippikalanterin, esimerkiksi kuviossa 2 esitetyn kenkäkalanterin 12 tai hihnakalanterin, läpi rainan pinnan topografian parantamiseksi. Pitkänippikalanterin jälkeen raina viedään varsinaiseen päällystysasemaan, joka voi olla esimerkiksi spray-päällystysasema 13, ver-hopäällystysasema tai Opticoat Duo -päällystysasema. Tässä päällystysase-20 massa rainan pintaan tehdään yksi tai useampi päällystyskerros halutun peit-tokyvyn aikaansaamiseksi. Päällystyksen jälkeen rainalle tehdään vielä loppu-kalanterointi esimerkiksi soft-kalanteriIla 14 tai monitelakalanterilla, rainan sileyden ja kiillon parantamiseksi. Keksinnön mukaisesti voidaan varsinaisen päällystysaseman jälkeen ennen loppukalanterointia käyttää vielä valinnaises-25 ti teräpäällystysasemaa rainan sileyden ja kiillon edelleen parantamiseksi.In the exemplary embodiment of Figure 2, a post-treatment method according to the invention is described in which a paperboard web W is first passed through a machine calender 10 to profile its thickness. Thereafter, the blade is applied to a blade-coating station 11 for pre-coating to improve the smoothness of the web. The web is then passed through a long nip calender, for example a shoe calender 12 or a belt calender shown in Figure 2, to improve the surface topography of the web. After the long nip calender, the web is taken to the actual coating station, which may be, for example, a spray coating station 13, a ver silver coating station or an Opticoat Duo coating station. Here, one or more coating layers are applied to the surface of the web for a coating gun-20 mass to achieve the desired coverage. After coating, the web is further end-calendered, for example with a soft calender 14 or a multi-roll calender, to improve the smoothness and gloss of the web. According to the invention, after the actual coating station, prior to final calendering, an optional blade coating station can be used to further improve the smoothness and gloss of the web.

Claims (6)

1. Förfarande för efterbehandling av kartong, särskilt returkartong (WLC), 5 kännetecknat därav, att i förfarandet utförs pä kartongbanan (W) först en maskinkalandering (10), därefter utsätts banan för en förbeläggning (11), sedan körs banan genom en längnypskalander (12) och därefter tili den egentliga beläggningsstationen (13) för att bilda ett eller flera beläggnings-skikt pä banans yta, och slutligen utsätts banan för en slutkalandering (14). 10A method of post-treatment of cardboard, in particular return cardboard (WLC), characterized in that in the method, a machine calendering (10) is first performed on the cardboard web (W), then the web is subjected to a pre-coating (11), then the web is run through a long nip scale. (12) and then to the actual coating station (13) to form one or more coating layers on the surface of the web, and finally the web is subjected to a final calendering (14). 10 2. Förfarande enligt patentkravet 1, kännetecknat därav, att förbelägg-ningen utförs med en knivbeläggning (11).Method according to claim 1, characterized in that the pre-coating is carried out with a knife coating (11). 3. Förfarande enligt patentkravet 1, kännetecknat därav, att förbelägg-15 ningen utförs med en stavbeläggning.3. A method according to claim 1, characterized in that the pre-coating is carried out with a rod coating. 4. Förfarande enligt nägot av patentkraven 1 -3, kännetecknat därav, att den egentliga beläggningen utförs med en spray-beläggning (13), ridäbe-läggning eller Opticoat Duo-beläggning. 20Method according to any one of claims 1-3, characterized in that the actual coating is performed with a spray coating (13), riding coating or Opticoat Duo coating. 20 5. Förfarande enligt nägot av föregäende patentkrav, kännetecknat därav, att slutkalanderingen utförs med en soft-kalandering (14) eller flervalskalan- ; dering. 25Method according to any of the preceding claims, characterized in that the final calendering is carried out with a soft calender (14) or a plurality scale; Dering. 25 6. Förfarande enligt nägot av föregäende patentkrav, kännetecknat därav, att i förfarandet utförs efter den egentliga beläggningen före slutkalande- ; ringen en valfri tilläggsbeläggning med knivbeläggning.Process according to any of the preceding claims, characterized in that the process is carried out after the actual coating prior to final peeling; ring an optional additional coating with knife coating.
FI20012446A 2001-12-12 2001-12-12 Cardboard finishing procedure FI111281B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI20012446A FI111281B (en) 2001-12-12 2001-12-12 Cardboard finishing procedure
DE10297514T DE10297514T5 (en) 2001-12-12 2002-11-15 Process for finishing cardboard
AU2002338999A AU2002338999A1 (en) 2001-12-12 2002-11-15 Method for finishing board
PCT/FI2002/000908 WO2003050352A1 (en) 2001-12-12 2002-11-15 Method for finishing board
CN 02824504 CN1284901C (en) 2001-12-12 2002-11-15 Method for finishing board

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20012446 2001-12-12
FI20012446A FI111281B (en) 2001-12-12 2001-12-12 Cardboard finishing procedure

Publications (2)

Publication Number Publication Date
FI20012446A0 FI20012446A0 (en) 2001-12-12
FI111281B true FI111281B (en) 2003-06-30

Family

ID=8562465

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20012446A FI111281B (en) 2001-12-12 2001-12-12 Cardboard finishing procedure

Country Status (5)

Country Link
CN (1) CN1284901C (en)
AU (1) AU2002338999A1 (en)
DE (1) DE10297514T5 (en)
FI (1) FI111281B (en)
WO (1) WO2003050352A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10232550C5 (en) * 2002-07-18 2013-02-07 Voith Patent Gmbh Apparatus and method for impregnating a paper or board web
DE10316851B4 (en) * 2003-04-11 2007-02-08 Stora Enso Publication Paper Gmbh & Co. Kg Process for treating a board web
DE10343120A1 (en) * 2003-09-17 2005-04-21 Voith Paper Patent Gmbh Method for coating a material web
DE10358414A1 (en) * 2003-12-13 2005-07-07 Voith Paper Patent Gmbh coater
FI20045110A (en) * 2004-03-30 2005-10-01 Metso Paper Inc Process for making coated fiber web
DE102004022416B4 (en) * 2004-05-06 2013-02-21 Voith Patent Gmbh Method and device for treating a web of paper or cardboard
JP2008503659A (en) * 2004-07-02 2008-02-07 メッツォ ペーパー インコーポレイテッド Method and apparatus for applying a fibrous web
DE102010038530A1 (en) * 2010-07-28 2012-02-02 Voith Patent Gmbh Process for producing a fibrous web, in particular a paper or board web
JP2014208934A (en) * 2013-03-28 2014-11-06 日本製紙株式会社 Coated white paperboard and production method thereof
DE102020112932B4 (en) 2020-05-13 2022-03-24 Voith Patent Gmbh fiber web smoothing

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE503580C2 (en) * 1995-03-16 1996-07-08 Korsnaes Ab Coated cardboard for shaped articles, production line for production of coated cardboard, method for making coated cardboard and ways to reduce the cracking propensity when folding a coated cardboard
DE19545408C5 (en) * 1995-12-06 2004-01-22 Voith Sulzer Papiermaschinen Gmbh Process for the surface finishing of a cardboard web
FI115649B (en) * 1998-06-10 2005-06-15 Metso Paper Inc Method of making paper and paper machine
FI104745B (en) * 1998-06-25 2000-03-31 Valmet Corp Method and apparatus for calendering paper and cardboard
FI991096A (en) * 1999-05-12 2000-11-13 Valmet Corp A process for producing paper, in particular fine paper, and a paper machine line, in particular for producing fine paper
FI991108A (en) * 1999-05-14 2000-11-15 Valmet Corp Method and apparatus for the manufacture of calendered paper or calendered paperboard

Also Published As

Publication number Publication date
AU2002338999A1 (en) 2003-06-23
WO2003050352A1 (en) 2003-06-19
CN1602377A (en) 2005-03-30
FI20012446A0 (en) 2001-12-12
CN1284901C (en) 2006-11-15
DE10297514T5 (en) 2004-11-18

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