Patent AT-E400768-T1: [Translated] METHOD FOR RENOVATING BRANCHES OF SEWER PIPES

Process for restoration of the leaking walls of sewer pipe branches by press coating of the inner pipe walls with UV or light hardenable polyester, vinyl ester, or flexible fiber tubing impregnated with epoxide resin, where the inner wall periphery is coated with adhesive. The polyester is vinyl ester or epoxide resin prestrengthened by thickening and the adhesive is polyurethane resin.