Description Overview Head box and yankee dryer - parts of a crescent former tissue machine Installed new in 2004 and start up in 2005 Width after rewinder: 2750 mm Capacity: 80 to 100 tpd Machine crescent former with twin jets headbox Built by PMT Headbox Stainless twin jet headbox slice width: 2850 mm With adjust of the slice For a maximum speed 2,000 m/min 8 rows of pipes flow: 48,000 lt/min Min flow: 30,000 lt/min Max flow: 61,000 lt/min Nominal recirculation: about 8% Vertical slice opening: min 6 – max 10 mm Horizontal slice movement: about 5 mm Yankee Dryer Table width: 3302 mm Yankee cylinder Ø 4877 mm Working pressure: 8.60 kpa Bearings SKF 231/630 Dynamic balancing: 2200 m/min Yankee cylinder drive: double entry gear box “Santasalo” duo-system Brunnschweiler high efficiency hood (without fans) Hood operating conditions: blowing air temperature: 450 °C Blowing air speed: 140 m/s