| 摘要 |
A fibre-containing liquid is sprayed on the inlet side of a first strainer, there being a flow path for medium passing therethrough and leading from the outlet side of the strainer. A second strainer spaced from the first strainer covers said flow path and has mesh openings larger than those of the first strainer but small enough so that fibres passing through the first strainer, due to rupture thereof, will rapidly obstruct the second strainer. |
