An oriented thermoplastic elastomer film having reduced permeability and improved fatigue resistance comprising a dynamically vulcanized polymer blend of (A) a halogenated isobutylene elastomer and (B) polyamide, the film is produced by casting or blowing the above polymer blend under the condition such...http://www.google.com.au/patents/US7879272?utm_source=gb-gplus-sharePatent US7879272 - Oriented thermoplastic elastomer film and process for producing the same