| 摘要 |
Continuously operating filtering devices are voluminous when accommodated in a casing. The casing serves to maintain a determined pressure round the filter, for instance in view of released gases. It is the objective to keep the volume as small as possible. This is achieved by using plastic as carrier belt. Up to the present rubber carrier belts have been used. These however impose limitations on the diameter of the guide rollers. A limitation of the roller diameter to 25% in comparison to rubber carrier belts is possible with the use of plastic. In addition, plastic has a better resistance to aggressive substances.
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