Patent ID: 6540438
Filing Date: 2003-04-01
Classification: B29C,B29L,E02D,F16L

Abstract:
A liner which conforms with and is attached to the interior walls within the interior of a preexisting underground structure comprising:a flexible impermeable acid resistant layer with a first surface exposed to the interior of the preexisting underground structure with interior walls and a second surface facing the interior walls of the preexisting underground structure; a second layer comprising fibers, the second layer forming a continuous layer with and conforming to the preexisting underground structure's interior walls and integrated into the second surface of the impermeable acid resistant layer, and an epoxy resin retained within the layer of fibers; wherein the liner is constructed from multiple panels, with leak tight seams between individual side panels of the liner and between each of the liner panels and a bottom panel of the liner, so that the liner is a complete leak tight enclosure and can be installed by directly inflating the liner.