Minimize barring and polygon effect
Middle of the 1980´s WALZEN IRLE established peripherally drilled rolls for the paper industry. This was an important step towards higher temperatures on roll surfaces.
The impulse to develop the WALZEN IRLE S-Technology was to further improve the transition of thermal energy from the peripheral bores to the roll surface. The thermal transfer is improved by spindles (turbulators) inserted into the peripheral bores which force the heating medium into a spiral motion thus increasing the speed of the fluid and the area it is passing by.
WALZEN IRLE S-Technology is applicable for every peripherally drilled roll type as a basic feature and also for upgrading existing rolls. Using the S-Technology tolerances for temperature and shape accuracy can be reduced by up to 50% compared to conventional peripherally drilled rolls.