| 摘要 |
A press section apparatus (10) is disclosed for pressing water from a formed web (W). The apparatus (10) includes a press frame (12) and a backing roll (14) rotatably supported by the frame (12). An elongate pressing device (16) cooperates with the backing roll (14) for defining therebetween an elongate pressing section (18) for pressing water from the formed web (W). A looped bearing blanket (20) extends through the pressing section (18) with the blanket (20) being disposed between the pressing device (16) and the backing roll (14) for supporting the web (W) during passage of the web (W) through the pressing section (18). A heater (22) is disposed adjacent to the backing roll (14) for heating the backing roll (14) such that the web (W) extending through the pressing section (18) is subjected to an increased temperature and pressure for an extended period so that water vapor generated within the web (W) during passage of the web (W) through the pressing section (18) drives off from the web (W) water within the web (W) in the liquid phase. The apparatus (10) also includes a felt (30) disposed between the web (W) and the blanket (20) for permitting the water in the liquid phase to be vented from the pressing section (18) and a further felt (32) for absorbing and transporting the water in the liquid phase away from the pressing section (18) so that delamination of the pressed web (W) is inhibited. |
