Single- or multi-layer designed dust filter bag for e.g. hand-operated stick device, has loosely recovered substance free from separately brought adsorber particles and having high roughness and /or texturizing or bagginess regarding fibers

摘要

The bag (4) has a holding plate (12) with a passage opening (13) that is covered by a check valve (15), where loosely recovered substance (S) e.g. fibers or granulate material, is contained in the bag before primary utilization. The substance is free from separately brought adsorber particles and formed for developing large dust adhering powders. The substance has high roughness and /or texturizing or bagginess regarding the fibers.