| 摘要 |
<p>PCT No. PCT/SE95/00140 Sec. 371 Date Aug. 22, 1996 Sec. 102(e) Date Aug. 22, 1996 PCT Filed Feb. 10, 1995 PCT Pub. No. WO95/21677 PCT Pub. Date Aug. 17, 1995A filter well of plastic having a bottom portion with an outlet and supporting a filter provided on top of the outlet, which filter is well sealed against leakage of liquid, is produced by first forming a bottom portion having a supporting surface for the filter and an outlet opening. Thereafter, a filter is applied on the bottom portion so that it covers at least essentially the whole bottom portion. Then, the cylindrical wall portion of the filter well is formed against the bottom portion with the lower part of the wall portion surrounding the edge of the filter and the upper edge of the bottom portion so that the bottom and wall portions form a fused unit with the outer edge of the filter being fused into the filter well material.</p> |
