MELT BLOWN MEDIA FOR AIR FILTRATION
Melt-blown fiber (MBF) comprising a propylene copolymer(PP), whereinthemelt-blown fiber (MBF) and/or thepropylene copolymer (PP) has/have (a) a melt flow rate MFR2 (230°C) measured according to ISO 1133 of at least 300g /10min, (b) a comonomer content of 1.5 to 6.0wt.-%, the comonmers are ethylene and/or at least one C4 to C12 a-olefin, (c) 13C-NMR spectroscopy.