| 摘要 |
A tow wound filter cartridge comprises a permeable core and one or more tows wound in a helicoidally or diamond-like shaped way or serpentine-like way around the core, having a zero twist degree, in order to obtain a filter rating of below 75 micrometer. The tows may comprise metal fibers. Preferably the tows of the filter cartridge consist only of metal fibers.
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