D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 3/08 (2006.01) D21F 1/78 (2006.01) D21F 3/02 (2006.01) D21F 5/00 (2006.01) D21H 25/00 (2006.01)
Patent
CA 2118660
ABSTRACT OF THE DISCLOSURE The invention relates to an apparatus for treating a material web, preferably for dewatering a paper web by the pulse drying method, comprising a heating roll and a counter member which together with the heating roll forms a pressing gap, the heating roll consisting of a stationary axle, a roll case and at least one bearing element for supporting the roll case on the axle and the roll case having a foundation layer and a thin ceramic surface layer which is applied to the foundation layer and has an improved energy efficiency and at the same time an improved mechanical stability; in such an apparatus it is proposed that the ceramic surface layer has a thickness of less than 1 mm, that the foundation layer consists of ceramic material as thermal insulation and that the foundation layer has a thickness which is greater than the thickness of the ceramic surface layer. (Figure 1)
Vomhoff Erich
Zaoralek Heinz-Michael
Macrae & Co.
Schwabische Huttenwerke Gmbh
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