Vacuum cleaner dust bag has folded tubular porous material with folded in sides, seamed ends and rigid inlet plate

摘要

A vacuum cleaner bag (1) is formed from a tube of suitable material which is flattened to create side walls (2), creased (5) inwards at the edges and seamed at the ends (7,8) to which a rigid apertured (10) plate (3) is adhered over a hole (4) in one flat side to provide an inlet.