A vacuum cleaner dust collection bag has a three layer wall construction in which at least one layer is of a crepe woven material

摘要

The bag (1) has a front plate (2) with an stiff connection plate (4) having a hole (5) for the suction tube. the wall layers comprise a coarse filter, fine filter and covering materials each of a woven nature as usual but one is of a crepe nature to increase the surface area and enhance the trapping of dust particles.