D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
34/7
D21F 5/00 (2006.01)
Patent
CA 1297668
Abstract The invention relates to a method and an appar- atus for drying a paper web or the like. In the inven- tion the web to be dried is transferred on a felt be- tween bands moving around as an endless loop. The band making contact with the web is heated by means of a steam chamber, and the band making contact with the felt is supported and cooled within the area of the steam chamber by means of supporting and cooling means. For providing a rapid compensation of pressure differences, the supporting and cooling means is formed by a hydrostatic plate comprising a plurality of pressure pockets and return conduits separated from each other by means of ridges. Water is fed into the pressure pockets so that it enters the return conduits over the ridges. The pressure of the return conduits is adjusted on the basis of the pressure of the steam contained in the steam chamber. (Figure 1)
556431
Rautakorpi Paavo
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Valmet Corporation
LandOfFree
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