Shock resistant high efficiency vacuum cleaner filter bag

摘要: There is provided a vacuum cleaner bag (20) with high fine particle removal efficiency under normal and shock loading conditions, comprising short term challenge concentrations (e.g., when used to pick up pile of debris). The also exhibits capacity without significant loss in pressure drop. comprises an outer support layer (2), fibrous (13) that charged create electrets, inner diffusion (14) substantially unbonded the filter layer, except at necessary seams (25) required for assembly bag.