The web is always supported by a felt and is picked up by three suction rolls during its path from the wire to the dryer section. The NipcoFlex roll is located in top position, and the Nipco P roll in bottom position, due to the higher weight of the latter. After each shoe press, a suction roll assists the felt separation and ensures a safe web run. Additionally, low-pressure exhaust systems are installed for proper mist removal. Each felt has two uhle boxes for the best conditioning.
Flow meters monitor the press dewatering to characterize the performance of each felt.
In order to optimize the moisture profile as early as possible in the process, the press section is equipped with the steam blow box ModuleSteam. Online Calendering The Janus MK 2 calender has eight rolls and is arranged at an angle of 45 degrees. The upper and lower rolls are polymer covered NipCorect rolls, which allow a short-wave caliper CD profiling with Fuzzy Logic control. Due to the 45-degree layout of the calender stack, it is not necessary to fully compensate the roll weights hydraulically. Nevertheless, it is possible to reach the same linear load in the uppermost nip as in the bottom nip.