| 摘要 |
<p>It has a base comprising a planar perforated plate (2), provided with reinforcements for preventing bending during spinning. The perforated plate (2) has 2,000 to 6,000 holes (1) which are smooth right through and have a mutual spacing of at most 3 mm. For increasing the output, to allow the perforated plate (2) to be provided with a greater number of holes (1) which are smooth right through, without the perforated plate (2) bending inadmissibly during operation, a plurality of mutually parallel supporting beams (4) are arranged inside the nozzle at a distance above the perforated plate (2). The supporting beams (4) are connected by their two ends to mutually opposite nozzle walls (3, 3'). Each of the supporting beams (4) is provided with rod-shaped elements (5), which connect the supporting beams (4) to the perforated plate (2). <IMAGE></p> |
