A - Human Necessities – 47 – L
Patent
A - Human Necessities
47
L
A47L 9/14 (2006.01) B01D 39/16 (2006.01)
Patent
CA 2367429
There is provided a vacuum cleaner filer bag comprising at least two sidewalls which sidewalls are joined by seams. At least one first sidewall comprises a film laminate of a heat sealable film layer and a film support layer. At least one second sidewall comprises a filter laminate comprising at least a synthetic fiber layer and synthetic fiber support layer where the at least one first sidewall is joined to adjacent sidewalls by thermal seams. The filter layer is preferably a high efficiency microfiber filter media which provides HEPA level performance for the vacuum cleaner bag.
L'invention concerne un sac d'aspirateur doté d'un filtre et présentant au moins deux parois soudées. L'une d'entre elles au moins comprend un film lamellaire d'une couche de film thermo-étanchéifiable et une couche de support de film. L'autre paroi comprend, quant à elle, un film lamellaire constitué d'au moins une couche de fibre synthétique et une couche de support de fibre synthétique. Au moins la première paroi est assemblée aux parois adjacentes par thermosoudage. La couche de filtre est de préférence un support de filtre de microfibres haute efficacité conférant au sac d'aspirateur un bon niveau de filtration HEPA.
3m Innovative Properties Company
Smart & Biggar
LandOfFree
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