Use of a single- or multi-layer film as a sliding film (2) or preliner (1) in
pipe rehabilitation using cured-in-place
pipe (CIPP) lining technology for application to the inner wall of an underground
pipe to be rehabilitated, preferably a sewer pipe (K), so that an insert hose (7) with a curable
carrier material (8) can be slid through the pipe on the sliding film (2) or preliner (1) laid in the pipe, wherein the film (1; 2) comprises at least one layer (3) containing at least one
thermoplastic olefin homo- or
copolymer, optionally modified, characterized in that said layer (3) additionally contains at least one
polyester.