MULTILAYER FIBERS

摘要

A multilayer fiber ABA comprising:
A) at least two top layers (layer A) comprising
propylene copolymer with ethylene having an ethylene derived units content ranging from 3.5 wt% to 6.5 wt%; a melt flow rate according to ISO 1133 (230°C, 2.16 Kg) comprised between from 0.5 g/10 min to 5 g/10 min; a fraction of polymer soluble in xylene at 25°C ranging from 10 wt% to 17wt% based on the total weight of said copolymer:
B) at least one core layer (layer B) comprising a high density polyethylene having a density ranging from 0.942 g/cm 3 to 0.958 g/cm 3 ; and having a melt flow rate (MFR measured at 190°C 5.0 kg) ranging from 0.3 g/10 min to 5 g/10 min.