Multilayer barrier film for transdermal drug delivery system and ostomy applications

摘要

An oxygen and moisture impermeable multilayer barrier film is provided including a barrier layer comprising a homopolymer of vinylidene chloride or a copolymer of vinylidene chloride and vinyl chloride or methyl methacrylate. The barrier layer is coextruded with or laminated to at least one heat sealable skin layer comprising a thermoplastic polyurethane, a substantially linear copolymer of ethylene and an alpha -olefin, or a homogeneously-branched linear olefin resin to form the barrier film. The multilayer film may be used for reusable ostomy bags, for systems for the transdermal delivery of drugs, and for heat sealable bags used in packaging.