Patent ID: 6868870

Claim:
A method for installing a liner in an underground pipeline, having an interior and exterior surface, comprising the steps of: applying a first thermosetting resin to the interior surface of the pipeline; placing a lining hose, having an outer layer and inner layer, wherein the inner layer includes a second thermosetting resin, in a collapsed state in the pipeline; placing a calibration hose in the lining hose; introducing pressurized heated water into the calibration hose; pressing the calibration hose against the inner layer of the lining hose and in communication with the second resin; pressing the lining hose against the interior surface of the pipeline with the first resin residing therebetween to cure the first and second thermosetting resins so that the lining hose bands to the interior surface of the pipeline; and removing the calibration hose from the lining hose.