This International Standard identifes specifc test procedures to assist producers and users in the selection and characterization of thermoplastic flms in single- or multi-layer form. It is intended to serve as a guide for those flms for which there are no existing standards or specifcations.NOTE Because of the range of materials used and the wide variety of processes available to produce various flm constructions, this document does not address specimen preparation.If an International Standard exists for a specifc flm product, the requirements of that standard shall take precedence over this document.There are many national, regional and industrial standards that address the requirements for specifc applications. Since this International Standard is intended to provide general guidance, it is not within the scope to address these.The signifcance of the data and ftness for use shall be determined by the user.