| 摘要 |
<p>A process, in the web end of a paper machine, for detaching the paper web from a forming wire, for its transport to the press section without any open draw and for carrying out a dewatering pressing action, comprising the steps of: conducting a felt onto the web carried by the wire, and transferring the web from the wire onto the felt, by using a transfer suction box which directs on the web a suction effect and deflects the web from the wire onto the felt, conducting the web and the felt on a predetermined portion of arc of a grooved and/or perforated roll located within a loop of the felt, subjecting from the outside of the roll the web and the felt on the portion of arc of the roll to a steam supply by which the web is heated and is supported from the outside by means of a overpressure present in the steam supply as the web changes its direction of travel, conducting the heated web on the felt to a first press nip, where it is pressed between a recessed surface roll and a smooth surface roll in view of dewatering, and conducting the web, after its detachment from the felt further onto the surface of the smooth surfaced roll.</p> |
