sewer pipe recovery system suitable for a pipe lining technique, and use of UV and light protective film

摘要

sewer pipe restoration system, and use of transparent contact film The present invention relates to a transparent, single layer or multilayer contact film absorbing and / or reflecting UV radiation and visible light of short wavelength, comprising at least one layer based on at least one optionally modified thermoplastic olefin homo- or copolymer, comprising a combination of at least one color pigment or organic or inorganic dye absorbing and / or reflecting visible light of short wavelength, and of at least one organic or inorganic compound absorbing and / or reflecting UV radiation, and the use of this film as a protective film against the effects of UV radiation and visible light, and a sewage cleaning system comprising such multilayer film as a outer tube film and an inner multilayer plastic film, and a cupregated backing material is present between the two films of the tube.