Applied Resin Lining Systems
The term Applied Resin Lining Systems may also apply to techniques covered elsewhere on this site, such Epoxy Resin Lining and PU Linings, but here it generally refers to other systems described below.
For example brush applied or robotically applied linings. Once a pipe has been CCTV surveyed, cleaned and prepared for lining, systems are available that utilise a milling machine (a machine which has a rotating rod inside a static rod) which can be pushed into the host pipe with a resin feed attached to the end of the rotating rod to which a brush head is attached. As the resin feed is applied to the pipe, the resin is brushed around the inside of the host pipe wall. The speed of advance and the resin feed volume dictate the thickness of the resin coat applied.
This system is at present usually utilised for the rehabilitation of smaller diameter pipes and laterals. The application process is monitored by CCTV with a camera attached to the non-rotating feed rod. Once cured the lined pipe is CCTV surveyed again to ensure the process has been completed successfully.
Robotically applied coatings utilise a similar process but in this instance use a remotely controlled robotic carriage within the pipe which is fitted with paddles that can be rotated in either direction to pick up and spread the resin feed around the pipe wall. The up-front cost of these systems does limit the potential take up of this option but usually the robots have CCTV fitted so that the process can be monitored throughout.
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