| 摘要 |
<p>The invention concerns a device for internal centrifuging of mineral fibres comprising a centrifuge provided with a peripheral band perforated with orifices distributed in a plurality of annular zones (ZA) arranged one above the other when the centrifuge is viewed in centrifuging position. The invention is characterised in that the device further comprises at least two annular zones (ZA1, ZA2) whereof the number of orifices per unit area (NSl, NS2) is different by a value not less than 5 %, in particular not less than 10 % and even 20 %.</p> |
