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While shoe presses have been around for decades, their application for tissue production was introduced in the late 1990s. ANDRITZ was one of the pioneers in this development work for the tissue segment. The main benefits of shoe presses for tissue applications are the potential for higher after-press dryness to reduce thermal drying requirements (allowing the tissue maker to increase production for the same level of thermal energy consumption), and the opportunity to save bulk Based on 14 years of experience, ANDRITZ has now evolved its PrimePress XT shoe press into a state-of-the-art version – the PrimePress XT Evo – to further enhance dewatering and tissue quality and reduce operating costs.
PrimePress XT Evo
Application of a shoe pressure in tissue production is unique in that the forming of the sheet is performed on a water-saturated felt (Crescent Former concept). Careful sizing of the sheet pre-dewatering is required. The pressing is performed against a Yankee, which is challenging as the Yankee is not a perfect counter-roll press member.
Shoe Press XT Evo
Unique edge control system
The new edge control system gives full control of the critical edge zones to the papermaker. In the edge area the local lineload can be controlled and the optimum press nip can be set. Together with the flexible shoe design, the individual control of the edge zones enables:
Additional benefits of the PrimePress XT Evo design
At a glance
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