Double doctors provide optimal doctoring for suction couch and press rolls. AirBlades are air assisted doctor blades for the press rolls that enable high nip dewatering even with low machine speeds, help with roll cleanliness problems, improve moisture profiles and have a positive effect on machine speed.

At Papelera de la Alquería, a shoe press RSP AirBlade was installed as a part of the vacuum system rebuild project. The shoe press in question is the last nip before the dryer section where Uhle boxes were used before but there was no doctor. Runtech delivery included a new backing bar inside the shoe press roll, a doctor with the hose loaded CompoAdapt blade holder and a RSP AirBlade. After the AirBlade installation, the mill is able to run without Uhle boxes. 7% reduction in steam consumption and 11% increase in the average machine speed have been reported.