公开(公告)号：US20220072457A1

公开(公告)日：2022-03-10

申请号：US17414732

申请日：2019-12-16

Applicant: EUROFILTERS HOLDING N.V.

Inventor： Ralf SAUER ,  Jan SCHULTINK

IPC: B01D39/16 ,  A47L9/14 ,  B01D46/02 ,  B01D46/00 ,  B32B27/36 ,  B32B5/02 ,  B32B5/26 ,  B32B27/12

Abstract: The invention comprises a vacuum cleaner filter bag with a bag wall, comprising: a support layer comprising recycled polyethylene terephthalate, rPET; a fine filter layer of a meltblown non-woven fabric comprising polypropylene, PP, PET and/or recycled polypropylene, rPP; and a capacity layer of a non-woven fabric comprising rPET, recycled textile material, TLO, and/or rPP; wherein the bag wall moreover comprises at least one intermediate layer formed of a non-woven fabric or a fibrous web and comprising rPP as a main component; and wherein the at least one intermediate layer is arranged between the support layer and the fine filter layer and/or between the fine filter layer and the capacity layer.