INVERSION LINER AND LINER COMPONENTS FOR CONDUITS

摘要

Conduit liners (300) are provided which in a first embodiment include first and second flexible fabric layers (218, 238) joined to first and second high strength fiber containing layers (234, 224) and joined in tubular form, whereby the first and second flexible fabric layers face one another. One of the high strength fiber containing layers (234) or (224) further is joined to a substantially fluid impermeable layer, which can be directly bonded to one of said layers, or indirectly joined by way of a third flexible fabric layer. The disclosed method and liner construction can save one or more steps in the manufacture of glass-reinforced, polyester felt inversion liners.