The process begins with the wet-out stage. During this stage, the textile liner is impregnated with the resin mixture, an epoxy base with a predetermined gardner. The typical polymer systems are either epoxy or vinyl ester-based materials.
Next, the liner is inserted into the pipe with air pressure. The resin will now be on the outside of the liner against the existing host pipe wall.
After inversion, a calibration tube is inverted inside the liner which can be ambient, hot water, or steam cured. During this period, the curing agent activates the resin causing it to harden, creating a fitted smooth and corrosion-resistant new pipe wall.
If necessary, a robotic cutting device will be inserted into the newly lined pipe to resonate with any branch line connections.
As a trenchless technology, CIPP does not require excavation to rehabilitate a pipeline that is either leaking or structurally unsound. The liner is often installed through a manhole or other existing access points. CIPP has a smooth interior and no joints. CIPP can effectively reduce infiltration and leaks in pipeline systems without digging or causing other environmental stressors.