Online - more rollers calender and method for calendering of a fiber web in an online - more rollers calender

摘要

Online - more rollers calender (10), in which a web of paper or cardboard web (w), which is calendered, is set up so that it by calendering nips (n1, n7) is conveyed by an upper deflection compensation roller (11), a lower deflection compensation roller (18) and two or more intermediate rolls (12, 17) are formed between the upper and lower roller (11, 18) are arranged, wherein the rollers (11, 18) are arranged as a roll stack, and wherein the intermediate rolls (12, 17) in relation to the calender body (r) are arranged which, by means of hydraulic relief cylinder (29a) and lever (29b) in order to relieve the gap load is supported by the masses of the bearing cups of the intermediate rolls and in question with these auxiliary means in question, which can be– all of the intermediate rolls with a hard surface of the roll stack of the forged thermo rolls (t, 12, 15, 17), which are made of steel,– all of the intermediate rolls with a soft surface of the roll stack, which is provided with polymer surface calendering (c, 13, 14, 16) are, for the..