| 摘要 |
<p>The present invention relates to a method and a device for compressing and processing a material mat (1) when manufacturing boards of material containing lignocellulose. The device comprises rotatable compressing rolls (2; 22), at least one of which is provided with a perforated shell surface (6; 26) and a channel system (7:27) arranged axially inside the shell surface, the processing medium being supplied to the mat via a slide shoe (8; 28) sealingly abutting the end wall of the roll (2; 22), further via the channel system (7; 27) and the perforated shell surface, and injection of the processing medium to the mat via the perforated shell surface occuring in a restricted sector (9) of the roll (2; 22) where the mat is compressed. Characteristic of the invention is that the injection of the processing medium can take place over a stepwise variable axial width of the roll (2; 22).</p> |
