IEC 60454-3-12:2006 contains requirements for polyethylene and polypropylene film tapes with pressure sensitive adhesives. Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application should be based on the actual requirements necessary for adequate performance in that application, and not based on this specification alone. This second edition of IEC 60454-3-12 replaces the first edition, published in 1998, as well as IEC 60454-3-18, published in 2003. It constitutes a technical revision. This edition replaces the previous second edition and includes its consolidation with the texts of IEC 60464-3-18 (2003). Keywords: for polyethylene and polypropylene film tapes, pressure sensitive adhesives