| 摘要 |
<p>A screen cylinder (1) for purifying or classifying pulp mixture. The screen cylinder (1) comprises screen wires (3) forming a cylindrical screening surface (2) of the screen cylinder (1) and at least one screen wire (3) comprises apertures (9) provided through at least one side (3c, 3d) of the screen wire (3), through which apertures the fluid in the pulp mixture and the portion of fibres defined by the size of the apertures (9) may flow from the feed side (6) of the screen cylinder (1) to the accept side (7) of the screen cylinder (1). In addition, methods for manufacturing a screen sylinder (1), a flat screen and a screen.</p> |
