Abstract: The present invention is related to a heat-sealable multilayer packaging film comprising: a support layer, and a peelable seal layer comprising a polymer blend, said polymer blend comprising: from 40 to 85% by weight of one or more first amorphous cyclic olefin polymer(s) characterized by a glass-transition temperature of at least 120° C., from 10 to 55% by weight of one or more second amorphous cyclic olefin polymer(s) characterized by a glass-transition temperature of less than 120° C., and from 0.5 to 15% by weight, preferably 0.5 to 10% by weight of at least one elastomeric copolymer comprising at least one polymerized monovinylarene and at least one polymerized acyclic olefin.

Abstract: The present invention is related to a flexible multilayer packaging film with high gas barrier properties comprising: one or more support layer(s) (1,10); one or more barrier layer(s) (6,60), each of the one or more barrier layer(s) (6,60) comprising an organic layer (2,20) and an inorganic layer(3,30); wherein said multilayer film has an oxygen transmission rate of less than 0.1 cm3/m2/24 h/atm, preferably less than 0.05 cm3/m2/24 h/atm, most preferably less than 0.03 cm3/m2/24 h/atm measured at 23° C. and 50% relative humidity.