| 摘要 |
A double wire former for multi- ply paper or board and having a number of headbox outlet apertures (14, 15, 16). Three streams of stock (A, B, C) are kept separate by partition components (25, 26) even after leaving the headbox outlet apertures (14, 15, 16). At least the first stream (A) is pre-dewatered in a pre- dewatering zone (3) of the first wire (1) before all the streams (A, B, C) enter the gap region (7) between the two wires (1, 6) between which at least the last stream (C) experiences initial dewatering. It is thus possible separately to influence the predewatering of the individual streams of stock for forming sheets. <IMAGE> |
