Abstract: A roller for the pressure treatment of webs, especially a roller such as a press or calender roller for the treatment of paper, cardboard and pulp webs in machines of the paper industry, which include a roller shell, roller flange and a roller shaft, one or more elastic, axial or coaxial clamps and elastic or yielding centering structures. The roller shell includes individual rings of sintered ceramic disposed side by side, the rings are clamped positively together by the one or more elastic, axial or coaxial clamps and the rings are aligned concentrically on the roller shaft by means of the elastic or yielding centering structures.

Abstract: Skimming blades in papermaking machines have a dewatering surface 4 adjoining the supporting surface 3 supporting the wire 1. To sustain the desired microturbulence of the fiber suspension 2 on the wire 1, the dewatering surface 4 is provided with troughs 7. The troughs 7 have a wavy shape, in which the wave crests 5 have a smaller radius r than the wave valleys 6.

Abstract: Apparatus for processing paper wherein a pair of endless curved wire devices operate to pass therebetween a sheet material to be treated for a dewatering operation or the like. A support structure in the form of individual support segments made from sintered oxide ceramics are arranged to extend over the width of the apparatus and are in contact with one another, with a plurality of the segments being arranged consecutively in the direction of the course of the wire devices, the segments having a maximum linear expanse of 700 mm per segment and having junction areas between consecutively arranged segments defining a gap for feeding cooling water to the guide wire devices.