The AIRPIN® calenders are mainly designed and manufactured according to the highest requirements of the most advanced manufacturing of filter media. 
The PIN-to-PIN configuration is based on very high precision mechanical components as well as the most advanced hydrotronic technology patented by COMERIO ERCOLE as HYDROGAP® micrometric hydraulic positioning system. 
In addition AIRPIN® calenders are equipped with the special steel rolls based on ROLLBLOCK® innovative technology, which allows a very high precision on thermal profile.