Method for calendering a fibrous web and a calender
a fibrous web and calendering technology, which is applied in the direction of drying machines with progressive movements, applications, lighting and heating apparatus, etc., can solve the problems of insufficient gloss, insufficient calendering, and bottleneck in the papermaking process, so as to reduce weaknesses, drawbacks and problems, and achieve a broader range of gloss and smoothness.
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[0035]FIG. 1 is a schematic view of a supercalender 10 provided with two roll stacks. Hereafter the supercalender provided with two roll stacks is referred to by the definition calender 10 for the sake of simplicity. The calender 10 shown in FIG. 1 includes two roll stacks 11L, 11R. In both roll bodies of the calender, a top roll 1, a bottom roll 5 and a center roll 3 are soft rolls having an elastic shell and a thermo roll 2, 4 having a hard-surface shell is arranged between the top roll 1 and the center roll 3 as well as between the bottom roll 5 and the center roll 3.
[0036] In the calender 10 of FIG. 1, a fibrous web W runs in both roll stacks 11L, 11R, between which the travel of the web is guided by a guide roll 16, meandering between each roll pair 1, 2; 2, 3; 3, 4; 4, 5 around spreader rolls 15 of the web. In both roll stacks 11L, 11R there are four roll gaps NC, NO, one between each roll pair 1, 2; 2, 3; 3, 4; 4, 5. In the embodiment of FIG. 1, a roll pair is formed of an e...
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