| 摘要 |
<p>Filter pack intended for the filtration of a liquid polymer, in particular prior to fibres being spun from said melt, which comprises a filter disc made of a metal perforated plate (1), which plate (1) comprises essentially conical sieve holes (3) having a hole dimension between 1 and 100 νm and more than 100 holes (3) per linear cm, while the thickness of the perforated plate (1) is at least 50 νm, the perforated plate (1) during filtration of a liquid polymer being oriented in such a way that the hole dimension increases in the flow direction of the liquid polymer. Moreover, a spinning head for spinning polymer fibres is described which comprises such a filter pack.</p> |
