This invention relates to articles made of polyester, preferably polyethylene terephthalate (PET), having coated directly to at least one of the surfaces thereof one or more layers of thermoplastic material with good gas-barrier characteristics, and novel methods of making such articles. Preferably the...http://www.google.es/patents/US6676883?utm_source=gb-gplus-sharePatente US6676883 - Methods for preparing coated polyester articles