A film is shown and described which contains 10 to 50 wt. % of a component A and 50 to 90 wt. % of a component B, based on the sum of the components A and B,
component A being selected from the group consisting of polymers that are obtainable from ring-opening polymerization and have a glass transition temperature (Tg) lower than −30° C. and
component B being selected from the group consisting of thermoplastic aliphatic copolyesters and mixtures thereof, and the film having a total thickness of 1 to 200 μm.