IEC 60454-3-11:2007 contains the requirements for pressure-sensitive adhesive tapes, made with combined backings based on polyester film: - PET film/glass filament combination tapes; - Creped cellulosic paper/PET film combination tapes; - PET film/polyester non-woven combination tapes; - PET film/epoxy combination tapes. This second edition of IEC 60454-3-11 replaces the first edition, published in 1998, as well as replacing IEC 60454-3-15 (2001), IEC 60454-3-16 (2003) and IEC 60454-3-17 (2001). It constitutes a technical revision. IEC 60454-3-15, IEC60454-3-16 and IEC 60454-3-17 are to be withdrawn at the time of this publication. The main changes with regard to the previous edition is the consolidation of Parts 3-11, 3-15, 3-16 and 3-17. Key words: pressure-sensitive adhesive tapes