Suez Lyonnaise Des Eaux

Simon Daniels

Raymond Connor

A water supply pipe has a tubular liner of a polyolefin elastomer/plastomer installed therein. The polyolefin elastomer/plastomer includes a substantially linear ethylene inter-polymer with a narrow molecular weight distribution from 1.8 to 2.2.

Rehabilitation of water supply pipes

A water supply pipe has a tubular liner of a polyolefin elastomer/plastomer installed therein. To install it, a messenger pig is attached to a line that pulls the liner through the pipe. The liner is produced by extrusion and die drawing during extrusion.

Device for use in rehabilitation of water supply pipes includes a tubular liner ( ) which is deployed through a pipe ( ) for example by a line attached to a messenger pig which is propelled through the pipe. The liner ( ) has a multi-lobed pleated cross-section, and is of a polyolefin elastomer material, e,g, a substantially linear ethylene inter-polymer. The liner is extruded and die drawn during extrusion to produce a reduced diameter highly oriented structure.

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Gateshead, United Kingdom

Simon Daniels