Apparatus for a paper/board machine and use of the same

Details Apparatus for a paper/board machine and use of the same Apparatus for a paper/board machine and use of the same

D - Textiles, Paper

21

F

D21F 1/48 (2006.01) D21F 1/50 (2006.01) D21F 1/66 (2006.01)

Patent

CA 2130224

(57) Abstract: An apparatus for a paper or board machine, said apparatus including a pressure-tight chamber. The chamber is adapted cross-directionally to the travel of a wire, felt or similar fabric so as to essentially extend over said fabric. The invention is characterized by having the pressure-tight chamber adapted to include a roll (1) with an at least partially permeable shell. The roll shell surface is advantageously formed by a fabric, furthermore, the roll is appropriately free-rotating mounted in bearings at both ends of roll shaft. The invention is further characterized by having the pressure- tight chamber operated with an over- or underpressure relative to the ambient pressure about the chamber. (Figure 1)

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