The ability of an adhesive tape to maintain its properties under influence of plasticisers. In contact with plasticisers (e.g. a component of foam materials or soft PVC) the adhesive performance of adhesive tapes can be affected, especially with rubber based adhesives. Adhesive tapes with a film backing sometimes perform better since the film layer acts as a barrier against migration of plasticisers. Important for applications on EPDM or soft PVC profiles for instance.