CIPP (Cured-In Place Pipe) for Sewer Rehabilitation

摘要

The invention relates to one tubular liner (1) for sewer rehabilitation, with at least:;one inner tubular film (2);;with a resin-carrier layer (3) surrounding the inner tubular film (2), whereas the resin (3b) is curable by means of UV radiation;;with a mechanically protective outer film system (7) surrounding the resin-carrier layer (3), with at least one outer film (7a; 7a, 7b) extending in the longitudinal direction of the tubular liner (1), whereas the longitudinal edges (8) of the outer film (7a) or the outer films (7b, 7c) are connected to each other in an overlapping manner in the circumferential direction of the tubular liner (1); whereas the at least one connecting point (9) resulting from this, upon the elongation in the radial direction during the insertion of the tubular liner (1); is elongated and may break in a sewer to be rehabilitated.;The tubular liner is characterized by the fact that;each of the least one outer films (7a; 7b, 7c) features at least one layer made of a material that is mechanically very stable and is essentially not able to elongate or able to elongate only very poorly,;the at least one outer film (7a; 7b, 7c) features at least one layer that is essentially impermeable for UV radiation and (if applicable) visible light.