Multilayer polymer composite for medical applications

摘要

This invention relates to multilayer thermoformable structures comprising a layer (A), a layer (C), and a layer (B) disposed between layers (A) and (C). The multilayer structures and polymer compositions of the invention are useful in preparing thermoformed articles and are particularly useful in preparing medical components such as IV bags. The multilayer structures and the polymer composition have good thermoformability and chemical resistance. A multilayer thermoformable structure according to the invention comprises: a layer (A) of a polymer composition comprising a homopolymer or copolymer of polypropylene; a layer (B) of a polymer composition comprising a homopolymer of polypropylene; and a layer (C) of a polymer composition comprising: (i) from about 45% to about 80% by weight of a homopolymer or copolymer of polypropylene or mixtures thereof; and (ii) from about 15% to about 40% by weight of an ethylene copolymer made using a metallocene catalyst.