VERFAHREN ZUM KALANDERN EINER PAPPEBAHN

VERFAHREN ZUM KALANDERN EINER PAPPEBAHN

A long nip (N) shoe calender formed of a shoe roll (10) and a thermo roll (20) is used in calendering, with a nip dwell time which is over 10 ms, advantageously over 20 ms. The nip pressure is below 3 MPa, advantageously below 1 MPa, and a surface temperature of the thermo roll (20) is over 200° C.,...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: TANI, MIKKO, LARES, MATTI
Format: Patent
Sprache:ger
Schlagworte:
ACCESSORIES FOR PAPER-MAKING MACHINES
CALENDERS
PAPER-MAKING
PRODUCTION OF CELLULOSE
TEXTILES
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Beschreibung
Zusammenfassung:A long nip (N) shoe calender formed of a shoe roll (10) and a thermo roll (20) is used in calendering, with a nip dwell time which is over 10 ms, advantageously over 20 ms. The nip pressure is below 3 MPa, advantageously below 1 MPa, and a surface temperature of the thermo roll (20) is over 200° C., advantageously over 250° C. The board web (W) surface to be pressed against the thermo roll (20) is moisturized before the nip.