Method and arrangement for calendering a web
Method for treating a web (W) with heat and compression in a cal ender arrangement ( 13 ), which in addition to a first stack ( 15 ) is provided with a second stack ( 33 ) each of which including one or more calendering nips ( 0 ), wherein the calendering treatment is selected to be performed in calendering nips ( 0 ) which can be of the first stack ( 15 ) and/or of the second stack ( 33 ) both of the stacks ( 15, 33 ) or part of the stacks ( 15, 33 ) being usable independently or as a combination together with the other stack ( 15, 33 ) or part of the other stack ( 15, 33 ).
1 . Method for treating a web (W) with heat and compression in a calender arrangement ( 13 ), in addition to a first stack ( 15 ) the calender arrangement is provided with a second stack ( 33 ) each of which including one or more calendering nips ( 0 ), the calendering treatment is selected to be performed in calendering nips ( 0 ) which can be of the first stack ( 15 ) and/or of the second stack ( 33 ) where both of the stacks ( 15 , 33 ) or part of the stacks ( 15 , 33 ) can be used independently or as a combination together with the other stack ( 15 , 33 ) or part of the other stack ( 15 , 33 ).
2 . Method according to claim 1 characterized in that the web (W) in a first selectable treating mode is guided first through all of the nips ( 0 ) of the first stack ( 15 ) and after that through all of the nips ( 0 ) of the second stack ( 33 ).
3 . Method according to claim 1 characterized in that the web (W) in a second selectable treating mode is guided first partially through the nips ( 0 ) of the first stack ( 15 ) and after that at least partially through nips ( 0 ) of the second stack ( 33 ).
4 . Method according to claim 1 characterized in that the web (W) in a third selectable treating mode is guided first partially through the nips ( 0 ) of the first stack ( 15 ) and after that at least partially through the nips ( 0 ) of the second stack ( 33 ) and after that partially through the remaining nips ( 0 ) of the first stack ( 15 ).
5 . Method according to claim 1 characterized in that the web (W) in a fourth selectable treating mode is guided first partially through the nips ( 0 ) of the second stack ( 33 ) and after that at least partially through nips ( 0 ) of the first stack ( 15 ).
6 . Method according to claim 1 characterized in that the web (W) in a fifth selectable treating mode is guided first partially through the nips ( 0 ) of the second stack ( 33 ) and after that at least partially through the nips ( 0 ) of the first stack ( 15 ) and after that partially through the remaining nips ( 0 ) of the second stack ( 33 ).
7 . A calender arrangement ( 13 ) for treating a web (W) with heat and compression wherein in addition to a first stack ( 15 ) the calender arrangement is provided with a second stack ( 33 ) each of which including one or more calendering nips ( 0 ), characterized in that the calendering nips ( 0 ) to be used are selectable out of the first stack ( 15 ) and/or of the second stack ( 33 ) wherein both of the stacks ( 15 , 33 ) or parts of the stacks ( 15 , 33 ) are useable independently or as a combination together with the other stack ( 15 , 33 ) or parts of the other stack ( 15 , 33 ).
8 . A calender arrangement according to claim 7 the first stack ( 15 ) is arranged on a first frame ( 17 ) characterized in that the second stack ( 33 ) is arranged on a second frame ( 42 ) and said second frame ( 42 ) is removable and adjustable connected to the first frame ( 17 ).
9 . A calender arrangement according to claim 7 and 8 characterized in that said second frame ( 42 ) is adjustable in position in relation to the first frame ( 17 ) such that the adjustment is feasible in the directions X, Y or Z independently from each others.
10 . A calender arrangement according to claim 7 characterized in that the web (W) is guided first through the nips ( 0 ) of the first stack ( 15 ) and after that through the nips ( 0 ) of the second stack ( 33 ).
11 . A calender arrangement according to claim 7 characterized in that the web (W) is guided first partially through the nips ( 0 ) of the first stack ( 15 ) and after that at least partially through nips ( 0 ) of the second stack ( 33 ).
12 . A calender arrangement according to claim 7 characterized in that the web (W) is guided first partially through the nips ( 0 ) of the first stack ( 15 ) and after that at least partially through the nips ( 0 ) of the second stack ( 33 ) and after that partially through the remaining nips ( 0 ) of the first stack ( 15 ).
13 . A calender arrangement according to claim 7 characterized in that the web (W) is guided first partially through the nips ( 0 ) of the second stack ( 33 ) and after that at least partially through nips ( 0 ) of the first stack ( 15 ).
14 . A calender arrangement according to claim 7 characterized in that the web (W) is guided first partially through the nips ( 0 ) of the second stack ( 33 ) and after that at least partially through the nips ( 0 ) of the first stack ( 15 ) and after that partially through the remaining nips ( 0 ) of the second stack ( 33 ).