Shock resistant high efficiency vacuum cleaner filter bag

Details Shock resistant high efficiency vacuum cleaner filter bag Shock resistant high efficiency vacuum cleaner filter bag

A - Human Necessities

47

L

A47L 9/14 (2006.01)

Patent

CA 2215838

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

La présente invention décrit un sac (20) pour aspirateur très efficace pour aspirer des particules très fines dans des conditions normales et de surcharges par à-coup, les surcharges par à-coup étant une surcharge de courte durée comportant des concentrations élevées de particules (par exemple, lorsque l'aspirateur est utilisé pour enlever une pile de débris). Le sac présente également une grande capacité de contenance sans perte significative de pression. Le sac comporte une couche de support extérieure (12), une couche fibreuse (13) qui est chargée pour créer des électrets, ainsi qu'une couche de diffusion interne (14) qui n'est pas vraiment liée à la couche filtrante, sauf aux nécessaires jonctions (25) du sac requises pour assembler le sac filtrant.

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