公开(公告)号：WO2023275547A1

公开(公告)日：2023-01-05

申请号：PCT/GB2022/051674

申请日：2022-06-29

Applicant: PENTATONIC LIMITED

Inventor： NESIN, Volodymyr ,  BOEDECKER, Johann

IPC: B01D39/16 ,  B01D39/18 ,  A41D13/11 ,  A62B23/025 ,  A62B7/10 ,  B01D2239/025 ,  B01D2239/0266 ,  B01D2239/0478 ,  B01D2239/0631 ,  B01D2239/0677 ,  B01D2239/083 ,  B01D2239/10 ,  B01D39/1615 ,  B01D39/1623 ,  B01D39/163 ,  B01D46/00 ,  B01D46/54 ,  B32B15/12 ,  B32B2250/03 ,  B32B2250/05 ,  B32B2255/02 ,  B32B2255/26 ,  B32B2262/0223 ,  B32B2262/062 ,  B32B2262/065 ,  B32B2262/08 ,  B32B2307/7163 ,  B32B2310/028 ,  B32B2437/00 ,  B32B2571/02 ,  B32B27/12 ,  B32B27/306 ,  B32B27/36 ,  B32B37/00 ,  B32B5/269 ,  D06N2201/0218 ,  D06N2201/042 ,  D06N2201/045 ,  D06N2203/028 ,  D06N2203/061 ,  D06N2205/14 ,  D06N2209/1614 ,  D06N2211/10 ,  D06N2211/30 ,  D06N3/0011 ,  D06N3/0015 ,  D06N3/009 ,  D06N3/123

Abstract: A biodegradable filter is provided with at least two outer layers formed from cellulosic-based fibres, bast fibres, protein -based fibres, and/or polyvinyl alcohol fibres. A non-woven nanofibre filtration membrane is located between the two outer layers, and has an areal density in the range of from 0.2 to 10 g/m2. The outer layers may include a thermoplastic additive and/or a thermoplastic layer may be located between the filtration membrane and the outer layers.