| 摘要 |
The invention relates to a method of producing a filter bag to be positioned around the filter cassette of a drum filter, and a filter bag produced by this method. According to the method, a filter weave is woven comprising a distance of at least two inseparably interwoven weave layers alternating with at least two weave layers woven separately one on top of another. At least one of the superimposed separate weave layers is an one-layer auxiliary weave (5). Preferably, a plurality of adjacent filter bags is woven, the adjacent filter bags being separated from each other by cutting. The filter bag woven according to the method comprises a two-layer filter weave (4), intended to be arranged against the perforated filtering surface of a filter cassette (7), and a one-layer auxiliary weave (5) for the other surfaces of the filter cassette. The filter bag can be shrunk tightly around the filter cassette (7), since it is made of threads that shrink when exposed to heat. |
