Global Patent Index - EP 1081281 A2

EP 1081281 A2 2001-03-07 - Calender

Title (en)

Calender

Title (de)

Kalander

Title (fr)

Calandre

Publication

EP 1081281 A2 (DE)

Application

EP 00117595 A

Priority

DE 19940897 A

Abstract (en)

[origin: DE19940897C1] The calender to act on both sides of a web, and especially of paper, has a twin-stack of rollers each with four rollers. One roller stack (2) has a hard outer (4) and intermediate roller (6) and a soft outer (7) and intermediate (5) roller, with all the rollers of different diameters. The other roller stack is identical but has a reverse order. The other roller stack (3) has rollers (8-11) identical to those in the first stack (2), but in a reverse order in relation to the direction (D) of web travel. The diameter of the intermediate rollers (5,6,9,10) is smaller than the diameters of the outer rollers (4,7,8,11). The diameter of the soft outer rollers (7,8) is larger than the diameter of the hard outer rollers (4,11). The two roller stacks (2,3) are of separate stacked rollers, next to each other. They are offset from each other, in height, so that the uppermost nip of the second stack (3) is higher than the lowest nip of the first stack (2). Or the two roller stacks (2,3) are in a common stack deployment, with separate draw force characteristics. The two roller stacks (2,3) have a web entry from above.

Abstract (de)

Die Erfindung betrifft einen Kalander für die zweiseitige Behandlung einer Warenbahn, insbesondere einer Papierbahn, mit einer zwei Walzenstapel mit je 4 Walzen umfassenden Walzenanordnung, die harte und weiche Walzen sowie jeweils zwischen einer harten und einer weichen Walze gebildete Arbeitsplatte aufweist, die die Warenbahn in einer Durchlaufrichtung durchläuft. Um gute Glättergebnisse zu erreichen ist vorgesehen, daß der eine Walzenstapel (2) jeweils eine harte Außenwalze (4) und eine harte Zwischenwalze (6) als auch eine weiche Außenwalze (7) und eine weiche Zwischenwalze (5) aufweist, die alle voneinander abweichende Walzendurchmesser besitzen, und der andere Walzenstapel (3) die gleichen Walzen (8,9,10,11) des einen Walzenstapels in umgekehrter Reihenfolge bezogen auf die Durchlaufrichtung der Warenbahn (12) aufweist. <IMAGE>

IPC 1-7 (main, further and additional classification)

D21G 1/00

IPC 8 full level (invention and additional information)

D21G 1/00 (2006.01)

CPC (invention and additional information)

D21G 1/00 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19940897 C1 20001109; AT 271156 T 20040715; DE 29915955 U1 20010111; EP 1081281 A2 20010307; EP 1081281 A3 20010718; EP 1081281 B1 20040714

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