Patent ID: 11896922
Assignee: EUROFILTERS HOLDING N.V.
Field: Chemical engineering (Chemistry)
Classification: CPC B  A | IPC A  B

Claim 16:
17. The vacuum cleaner filter bag according to claim 1, wherein
a) each support layer is a spunbond nonwoven fabric or scrim with a grammage of 5 to 80 g/m2 or with a titer of the spunbond nonwoven fabric or scrim made of fibers in a range of 0.5 dtex to 15 dtex,
b) the air-permeable material comprises 1 to 3 support layers,
in case of at least two support layers are present, a total grammage of a sum of all the support layers is 10 to 240 g/m2,
or

c) all support layers are made of the one or more recycled plastics comprising rPET.