What Does Sleeve Mean?
A sleeve is a liner, the outside of which is coated with a resin, which is inserted into a damaged pipe in the trenchless rehabilitation process referred to as relining or pipe relining.
The sleeve may be made of fiber reinforced plastic or polyester felt coated with polyvinyl chloride (PVC). The sleeve is pulled into the damaged pipe (called a "host pipe") so that it isolates the damaged area and is expanded until its outer, resin-coated surface contacts the walls of the host pipe.
