PRR – PRDR – PRTR – Is a modular unit, consisting of two sturdy side frames and one preheating drum with a diameter of 900 mm or 1100 mm. Two fixed idler rolls and one movable double wrap roll allow a smooth and easy paper threading, as requested by production.
The single station unit (mod. PRR) is used to heat single facer liners, while the two-station (mod. PRDR) and the three-station version (mod. PRTR) are used to heat the liner at the double backer.
The wrap is temperature controlled and the wrap arm is motorized by a Servo-motor and drive.
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