SE9901754L - Method and machine for making printing paper or cardboard - Google Patents

Method and machine for making printing paper or cardboard

Info

Publication number
SE9901754L
SE9901754L SE9901754A SE9901754A SE9901754L SE 9901754 L SE9901754 L SE 9901754L SE 9901754 A SE9901754 A SE 9901754A SE 9901754 A SE9901754 A SE 9901754A SE 9901754 L SE9901754 L SE 9901754L
Authority
SE
Sweden
Prior art keywords
press
roll
web
press nip
machine
Prior art date
Application number
SE9901754A
Other languages
Swedish (sv)
Other versions
SE514097C2 (en
SE9901754D0 (en
Inventor
Jorma Tapio Laapotti
Original Assignee
Valmet Corp
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 Valmet Corp filed Critical Valmet Corp
Priority to SE9901754A priority Critical patent/SE514097C2/en
Publication of SE9901754D0 publication Critical patent/SE9901754D0/en
Priority to ES00931804T priority patent/ES2237428T3/en
Priority to EP00931804A priority patent/EP1238146B1/en
Priority to PCT/SE2000/000826 priority patent/WO2000070142A1/en
Priority to AT00931804T priority patent/ATE289643T1/en
Priority to JP2000618541A priority patent/JP4494651B2/en
Priority to CA002373205A priority patent/CA2373205C/en
Priority to DE60018304T priority patent/DE60018304T2/en
Priority to US10/031,658 priority patent/US6730192B1/en
Publication of SE9901754L publication Critical patent/SE9901754L/en
Publication of SE514097C2 publication Critical patent/SE514097C2/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper

Abstract

A printing paper or paperboard is manufactured by pressing the web in a deflection-compensating roll press having the double-felted roll-press nip and open press rolls. Manufacture of a printing paper or paperboard with a grammage of 30-200 g/m2 in a machine involves pressing the web in a deflection-compensating roll press having double-felted roll-press nip and open press roll. The machine is operated at a web speed of at least 1200 m/min. The web in the roll-press nip is subjected to a linear load of 100-300, preferably 120-250 kN/m, and at 5-15, preferably 8-11 MPa. The web in the shoe-press nip is subjected to a linear load of 500-1500, preferably 700-1200 kN/m, and at 4-13, preferably 4-8 MPa. The dewatered web is obtained with a dry-solids content of at least 35%, preferably at least 38%, after the roll-press nip and at least 45% after the shoe-press nip. The web is formed in the wet section, pressed in a roll press with a double felted roll-press nip and in a shoe press with an extended single or double-felted shoe-press nip. An Independent claim is also included for a paper or paperboard machine at high speed comprising a wet section (1), a press section (2), and a drying section (3).
SE9901754A 1999-05-14 1999-05-14 Manufacture of a printing paper or paperboard involves pressing the web in a deflection-compensating roll press having the double-felted roll-press nip and open press rolls SE514097C2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE9901754A SE514097C2 (en) 1999-05-14 1999-05-14 Manufacture of a printing paper or paperboard involves pressing the web in a deflection-compensating roll press having the double-felted roll-press nip and open press rolls
US10/031,658 US6730192B1 (en) 1999-05-14 2000-05-02 Method and machine for manufacturing printing paper or paperboard
AT00931804T ATE289643T1 (en) 1999-05-14 2000-05-02 METHOD AND DEVICE FOR PRODUCING PRINTING PAPER OR CARDBOARD
EP00931804A EP1238146B1 (en) 1999-05-14 2000-05-02 Method and machine for manufacturing printing paper or paperboard
PCT/SE2000/000826 WO2000070142A1 (en) 1999-05-14 2000-05-02 Method and machine for manufacturing printing paper or paperboard
ES00931804T ES2237428T3 (en) 1999-05-14 2000-05-02 METHOD AND MACHINE FOR THE MANUFACTURE OF PAPER OR PRINT CARTON.
JP2000618541A JP4494651B2 (en) 1999-05-14 2000-05-02 Printing paper or paperboard manufacturing method and paper machine
CA002373205A CA2373205C (en) 1999-05-14 2000-05-02 Method and machine for manufacturing printing paper or paperboard
DE60018304T DE60018304T2 (en) 1999-05-14 2000-05-02 Method and machine for making printing paper or cardboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9901754A SE514097C2 (en) 1999-05-14 1999-05-14 Manufacture of a printing paper or paperboard involves pressing the web in a deflection-compensating roll press having the double-felted roll-press nip and open press rolls

Publications (3)

Publication Number Publication Date
SE9901754D0 SE9901754D0 (en) 1999-05-14
SE9901754L true SE9901754L (en) 2000-11-15
SE514097C2 SE514097C2 (en) 2001-01-08

Family

ID=20415589

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9901754A SE514097C2 (en) 1999-05-14 1999-05-14 Manufacture of a printing paper or paperboard involves pressing the web in a deflection-compensating roll press having the double-felted roll-press nip and open press rolls

Country Status (1)

Country Link
SE (1) SE514097C2 (en)

Also Published As

Publication number Publication date
SE514097C2 (en) 2001-01-08
SE9901754D0 (en) 1999-05-14

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Legal Events

Date Code Title Description
NUG Patent has lapsed